Claims:WE CLAIM:
1. An instrument cluster (100) comprising:
a frame member (110);
a cover (160) attached to the frame member (110), said frame member (110) and said cover (160) defining a hollow space (112) therebetween;
a base member (130) mounted to the frame member (110) and disposed in the hollow space (112) being enclosed by said cover (160),
the base member (130) having a first surface (130f) and a second surface (130r) opposite the first surface (130f);
a display screen (120) disposed in the hollow space (112) and attached to the first surface (130f) of the base member (130) to face a user; and
a primary controller board (140) attached to the second surface (130r) of the base member (130); wherein:
the cover (160) having: a first heat sink (180) configured to dissipate heat from the display screen (120); a second heat sink (182) and a third heat sink (184) configured to dissipate heat from different electronic components of the primary controller board (140).

2. The instrument cluster (100) as claimed in claim 1, wherein the cover (160) comprises a shell (161) into which the first heat sink (180), the second heat sink (182) and the third heat sink (184) are enmoulded.

3. The instrument cluster (100) as claimed in claim 2, wherein the first heat sink (180), the second heat sink (182) and the third heat sink (184) have finned structures extending outwardly of the hollow space (112) from a rear of the shell (161), the finned structures configured to dissipate heat to atmosphere.

4. The instrument cluster (100) as claimed in claim 2, wherein the shell (161) comprises a breather hole (162) for exhausting gases accumulated in space between the frame member (110) and the cover (160).

5. The instrument cluster (100) as claimed in claim 2, wherein the shell (161) comprises a port opening (164) configured to receive a socket for electrically and communicatively connecting the instrument cluster (100) to external components.
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6. The instrument cluster (100) as claimed in claim 2, wherein the shell (161) comprises: an access door (166) to access an input port of the instrument cluster (100); and a first gasket (190) being provided along a periphery of the access door (166) to prevent entry of dust and water into the instrument cluster (100).

7. The instrument cluster (100) as claimed in claim 1, wherein the cover (160) comprises a plurality of mounting points (168) to mount the instrument cluster (100) on an external structure.

8. The instrument cluster (100) as claimed in claim 1, wherein the frame member (110) comprises a first tongue (113) projecting towards the cover (160) along the periphery of the frame member (110); and the cover (160) comprises a first groove (163) configured to receive the first tongue (113).

9. The instrument cluster (100) as claimed in claim 8, wherein the cover (160) comprises a second tongue (167) adjacent to the first groove (163); and the frame member (110) comprises a second groove (117) configured to receive the second tongue (167).

10. The instrument cluster (100) as claimed in claim 1 comprising a second gasket (192) at an interface between the frame member (110) and the cover (160) to prevent entry of dust and water into the instrument cluster (100).

11. The instrument cluster (100) as claimed in claim 1 comprising a cover lens (115) disposed in the hollow space (112) to face the user and covering the display screen (120) to protect the display screen (120) from outside environment, the cover lens (115) being transparent.

12. The instrument cluster (100) as claimed in claim 1 comprising a display processor (122) attached to the second surface (130r) of the base member (130) and sandwiched between the base member (130) and the primary controller board (140).

13. The instrument cluster (100) as claimed in claim 1 comprising a secondary controller board (150) having NFC capability attached to the second surface (130r) of the base member (130).

14. The instrument cluster (100) as claimed in claim 13 comprising a plurality of clips (194) for guided mounting of the primary controller board (140) and the secondary controller board (150) on the base member (130).

15. The instrument cluster (100) as claimed in claims 12 and 13 comprising one or more wire guides (142) attached on the primary controller board (140) for guided routing of wires connecting the primary controller board (140), the display processor (122), and the secondary controller board (150).

16. The instrument cluster (100) as claimed in claim 13, wherein an ambient light sensor is attached to the secondary controller board (150).

17. The instrument cluster (100) as claimed in claim 13, wherein a Bluetooth module is attached to the secondary controller board (150).

18. The instrument cluster (100) as claimed in claim 1 comprising one or more antennae (124) attached to a rear surface (120r) of the display screen (120) to provide wireless capabilities to the instrument cluster (100).

19. The instrument cluster (100) as claimed in claim 18, wherein the base member (130) has one or more cut-outs (132) overlapping with the one or more antennae (124).

20. The instrument cluster (100) as claimed in claim 18, wherein the one or more antennae (124) comprise at least one of a 4G antenna and a Wi-Fi antenna.

21. The instrument cluster (100) as claimed in claim 1 comprising a camera (134) attached to the base member (130) to face the user for performing at least one of a face recognition for keyless authentication in a device/vehicle where the instrument cluster is installed, monitor alertness of the user and identify gestures of the user.

22. The instrument cluster (100) as claimed in claim 21, wherein the camera (134) comprises an IR sensor configured for night vision.
, Description:FIELD OF THE INVENTION
[001] The present invention generally relates to an instrument cluster and particularly relates to assembly of components of the instrument cluster.

BACKGROUND OF THE INVENTION
[002] Generally, an instrument cluster is used to display relevant information about a device or a vehicle to an operator/user. When used in vehicles, the instrument cluster displays information like total distance travelled, vehicle speed, engine speed, fuel level, battery charge level, fuel efficiency, operational status of lamps on the vehicle, tyre pressure, and so on. The instrument cluster can also be used in devices like battery packs, inverter units, power generating devices like wind turbines, hydropower generators or arrays of solar panels, etc. It can also be used in power tools like lawn movers, power drills, vacuum cleaners and the like which require information to be displayed to a user during their operation. The instrument cluster also offers an interface for the user to communicate with the device/vehicle. Instructions can be input by the user through physical buttons associated with the instrument cluster, via a touch screen of the instrument cluster, by voice commands or by gestures. The user can also be notified of the actions taken by the device/vehicle in pursuance to the instructions received through a display of the instrument cluster.
[003] Conventionally, display units of instrument clusters have made use of small LCD displays for showing information to the user. With advancement in display technology, brighter and larger displays with touchscreen capabilities may be employed in instrument clusters. Larger and brighter displays are more convenient and aesthetically appealing to the user. However, larger displays draw more power and generate more heat. In case of LED displays, heat generated has to be dissipated outside the instrument cluster to prevent damage and ensure longevity of the LEDs used. With the increase in number of LEDs and peak brightness of the screen, more heat needs to be dissipated out of the instrument cluster. Additionally, the display should not feel uncomfortable to touch for the user. Hence, it is ideal to maintain the display within prescribed temperature limit. Heat is also generated by other components of the instrument cluster including processors and communication modules. Heat generated in these. components may accumulate inside the instrument cluster increasing overall temperature of the instrument cluster. Hence, it is ideal to eliminate heat entrapment zones between different components/modules and enclosures of the instrument cluster and effectively dissipate heat away from these zones.
[004] Generally, components of the instrument cluster are housed in an enclosure formed by a top cover and a bottom cover. The top and bottom covers may be fastened to each other using fasteners or bonded together permanently. Bigger displays will require multiple fasteners, preferably of larger size. The use of multiple fasteners would reduce the aesthetic appeal of the instrument cluster. It would also increase overall cost and time for assembly of the components of the instrument cluster. However, use of fasteners allows internal components of the instrument cluster to be accessed if in need of service. If the top and bottom covers are fixed permanently together, it would impede access to internal components of the instrument cluster and make servicing or replacement of components virtually impossible. Software updates are generally carried out over the air (OTA) and hence does not require the instrument cluster to be opened up. However, in order to calibrate the instrument cluster, internal components need to be accessed, which requires that the instrument cluster be opened up. This is cumbersome even when the top and bottom covers are fastened together. Further, sealed structure of the instrument cluster may lead to entrapment of gases within, causing failure in the long run.
[005] Considering the aspect of vehicular safety, it is desirable to detect and track alertness of the user during operation of the vehicle. These safety features could be incorporated into wearables by mounting sensors in them, for e.g., by mounting tracking sensors in helmet of a motorcycle user. However, this is a cumbersome and incoherent task as separate hardware and mounting provisions are required to be provided in wearables. Also, make of wearables may vary between brands and the user might avoid using them either due to cost constraints or due to inconvenience. Thus, it is advantageous to incorporate detection and tracking of alertness of the user into the instrument cluster.
[006] In modern automobiles/devices it is also desirable to reduce use of a key fob. The key fob is susceptible to being tampered with, getting misplaced/lost or becoming chargeless. Presently, keyless entry module is placed at locations other than the instrument cluster and occupies space, which becomes an issue in automobiles/devices with limited space availability.
[007] Additionally, it is desirable to improve receptivity of the instrument cluster and incorporate Internet of Things (IoT) capabilities into the instrument cluster to take advantage of current technological advancements in these fields. It is cheaper and more convenient to incorporate these features into the instrument cluster than to provide a separate telematics unit.
[008] Thus, there is a need in the art for an instrument cluster, which addresses at least the aforementioned problems.

SUMMARY OF THE INVENTION
[009] In one aspect, the present invention is directed to an instrument cluster. The instrument cluster includes a frame member and a cover attached to the frame member. The frame member and the cover define a hollow space therebetween. A base member is mounted to the frame member and is disposed in the hollow space being enclosed by the cover. The base member has a first surface and a second surface opposite the first surface. The second surface of the base member faces towards the cover. A display screen is disposed in the hollow space to face a user. The display screen is attached to the first surface of the base member. A primary controller board is attached to the second surface of the base member. The cover includes a first heat sink, a second heat sink and a third heat sink. The first heat sink is adapted to dissipate heat from the display screen. The second heat sink and the third heat sink are adapted to dissipate heat from different electronic components of the primary controller board.
[010] In an embodiment, the cover includes a shell, such that first heat sink, the second heat sink and the third heat sink are enmoulded in the shell.
[011] In another embodiment, the first heat sink, the second heat sink and the third heat sink have finned structures which extend outwardly of the hollow space from a rear of the shell. The finned structures are adapted to dissipate heat to atmosphere.
[012] In an embodiment, the shell is provided with a breather hole adapted for exhausting gases accumulated in space between the frame member and the cover. In another embodiment, the shell is provided with a port opening which is adapted to receive a socket for electrically and communicatively connecting the instrument cluster to external components.
[013] In yet another embodiment, the shell includes an access door adapted to grant access to an input port of the instrument cluster. In an embodiment, a first gasket is provided along a periphery of the access door to prevent entry of dust and water into the instrument cluster.
[014] In a further embodiment, the cover includes a plurality of mounting points disposed at an exterior of the cover. The mounting points are adapted to mount the instrument cluster on an external structure.
[015] In another embodiment, the frame member includes, along the periphery of the frame member, a first tongue which projects towards the cover. Concurrently, the cover is provided with a first groove configured to receive the first tongue. In an alternate embodiment, the cover includes a second tongue disposed adjacent to the first groove and projecting towards the frame member. Concurrently, the frame member is provided with a second groove configured to receive the second tongue.
[016] In a further embodiment, a second gasket is provided at an interface between the frame member and the cover. The second gasket is adapted to prevent entry of dust and water into the instrument cluster.
[017] In another embodiment, the instrument cluster includes a cover lens disposed in the hollow space to face the user. The cover lens is adapted to cover the display screen in order to protect the display screen from outside environment. The cover lens is transparent.
[018] In yet another embodiment, a display processor is attached to the second surface of the base member, such that the display processor is sandwiched between the base member and the primary controller board.
[019] In still another embodiment, a secondary controller board having NFC capability is attached to the second surface of the base member.
[020] In a further embodiment, a plurality of clips is provided in the instrument cluster, the clips being adapted for guided mounting of the primary controller board and the secondary controller board on the base member. In another embodiment, one or more wire guides are attached on the primary controller board, the wire guides being adapted for guided routing of wires which connect the primary controller board, the display processor, and the secondary controller board.
[021] In an embodiment, an ambient light sensor is attached to the secondary controller board. In an alternate embodiment, a Bluetooth module is attached to the secondary controller board.
[022] In a further embodiment, one or more antennae are attached to a rear surface of the display screen. The antennae are adapted to provide wireless communication capabilities to the instrument cluster. In an embodiment, the base member has one or more cut-outs overlapping with the one or more antennae. The one or more cut-outs are adapted to expose the antennae to a rear of the base member. In an embodiment, the one or more antennae include at least one of a 4G antenna and a Wi-Fi antenna.
[023] In a further embodiment, the instrument cluster includes a camera attached to the base member to face the user. The camera is adapted for performing at least one of a face recognition for keyless authentication in a device or a vehicle where the instrument cluster is installed, monitor alertness of the user and identify gestures of the user. In an alternate embodiment, the camera is provided with an IR sensor configured for night vision.

BRIEF DESCRIPTION OF THE DRAWINGS
[024] Reference will be made to embodiments of the invention, examples of which may be illustrated in accompanying figures. These figures are intended to be illustrative, and not limiting. Although the invention is generally described in context of these embodiments, it should be understood that it is not intended to limit the scope of the invention to these particular embodiments.
Figure 1 illustrates an exploded view of an exemplary instrument cluster, in accordance with an embodiment of the present invention.
Figure 2 illustrates a cross sectional view of the instrument cluster, in accordance with an embodiment of the present invention.
Figure 3 illustrates a magnified view of an area A indicated in Figure 1, in accordance with an embodiment of the present invention.
Figure 4 illustrates a rear perspective view of the instrument cluster without the cover, in accordance with an embodiment of the present invention.
Figure 5 illustrates an exploded perspective view of the instrument cluster shown in Figure 3, in accordance with an embodiment of the present invention.
Figure 6 illustrates a rear perspective view of the instrument cluster without the cover, in accordance with an embodiment of the present invention.
Figure 7 illustrates a rear perspective view of a cover of the instrument cluster, in accordance with an embodiment of the present invention.
Figure 8 illustrates an exploded perspective view of components of the cover shown in Figure 6, in accordance with an embodiment of the present invention.
Figure 9 illustrates a front perspective view of components of the instrument cluster, in accordance with an embodiment of the present invention.
Figure 10 illustrates an exploded perspective view of components of the instrument cluster shown in Figure 8, in accordance with an embodiment of the present invention.
Figure 11 illustrates a perspective view of one or more wire guides of the instrument cluster, in accordance with an embodiment of the present invention.

DETAILED DESCRIPTION OF THE INVENTION
[025] Various features and embodiments of the present invention here will be discernible from the following further description thereof, set out hereunder. The present invention generally relates to an instrument cluster and particularly relates to assembly of components of the instrument cluster. The instrument cluster described in the ensuing exemplary embodiments may be used in automobiles including two-wheelers, three-wheelers and four-wheelers. It may be also used in power tools and other electronic devices like inverters, battery packs, etc. Further, it is contemplated that the disclosure in the present invention may be applied to any automobile or any device capable of accommodating the present subject matter without defeating the scope of the present invention.
[026] Figure 1 illustrates an exploded view of an exemplary instrument cluster 100, in accordance with an embodiment of the present subject matter. The instrument cluster 100 includes a frame member 110 and a cover 160. The frame member 110 includes an aperture 110a (shown in Figure 5) surrounded by a periphery 110b (shown in Figure 5) made of solid material. The cover 160 includes a shell 161 (shown in Figure 7) and a cavity (not shown) inside the shell 161. In an embodiment, the instrument cluster 100 includes a base member 130, a camera 134, a primary controller board 140, a secondary controller board 150, one or more wire guides 142 and thermal pads 170. The cover 160 includes heat sinks 180,182, 184, a port opening 164 and a cap 162a.
[027] Figure 2 illustrates a cross sectional view of the instrument cluster, in accordance with an embodiment of the present subject matter. The cover 160 is attached to the frame member 110 to define a hollow space 112. In an embodiment, the shell 161 (shown in Figure 7) is attached to the periphery 110b of the frame member 110, such that the aperture 110a of the frame member 110 and the cavity of the cover 160 together form the hollow space 112. A display screen 120 (shown in Figure 5) is disposed in the hollow space 112 and the display screen 120 is positioned to face a user/operator. The display screen 120 faces outside the hollow space 112 to show information to the user. The display screen 120 can be based on one of a Liquid crystal display (LCD) or a Light Emitting Diode (LED) technology or any other technology known in the art. In an embodiment, the display screen 120 has infrared compatible display panel. In another embodiment, the display screen 120 has an anti-glare film applied on it for easy readability of information displayed. In yet another embodiment, the display screen 120 has anti-fog coating to prevent fogging of the display screen 120.
[028] In an embodiment, the instrument cluster 100 includes a cover lens 115 (shown in Figure 5) disposed in the hollow space 112 and facing the user. The cover lens 115 is attached to the frame member 110 opposite the cover 160. The cover lens 115 covers the display screen 120 from an outside of the hollow space 112 to protect the display screen 120 from outside environment. The frame member 110, the cover 160 and the cover lens 115 conjointly form a protective enclosure for components of the instrument cluster 100, including the display screen 120. In an embodiment, the cover lens 115 is made of transparent hard material like conductive fiber or glass so that information on the display screen 120 is easily visible to the user. In another embodiment, the cover lens 115 is provided with an anti-glare film and/or anti-fog coating to maintain readability of information displayed under all environmental conditions. An interface between the cover 160 and the cover lens 115 is lined with a gasket (not shown) to prevent dust and water entry into the instrument cluster 100 through gaps in the interface. In an embodiment, a seat (not shown) is provided along an inner periphery of the frame member 110 to receive the cover lens 115. In a further embodiment, the cover lens 115 is firmly affixed on surface of the display screen 120 with aid of Very High Bonding (VHB) tape 114 (shown in Figure 5).
[029] The aperture 110a of the frame member 110 is made to match the shape of the display screen 120. Further, the shape of the cover lens 115 is made to match the aperture of the frame member 110. In the illustrated embodiment, the display screen 120 has a rectangular shape (shown in Figure 4). However, the display screen 120 can be of any shape including circular and oval.
[030] The shell 161 of the cover 160 includes the port opening 164 (shown in Figure 1) adapted to receive a socket for electrically and communicatively connecting the instrument cluster 100 to external components. The port opening 164 acts as a receptacle to receive a plug. The plug is connected to pins provided inside the hollow space 112 of the instrument cluster 100 to supply electricity for powering the instrument cluster 100. The plug and associated cables are also adapted to transmit various data signals into and out of the instrument cluster 100. External data is received by the instrument cluster 100 to be processed and signals are dispensed to components of the vehicle/device as instructions to perform certain functions. In an embodiment, the shell 161 includes a projection 164a (shown in Figure 8) that extends outwardly in a direction opposite to the hollow space 112, such that the projection 164a encircles the port opening 164. The projection 164a defines a cavity with the port opening 164 located at the end of the cavity. The projection 164a further receives the plug into the cavity. This ensures better fit of the plug to pins of the instrument cluster 100 and minimises dust and water entry through edges of the port opening 164.
[031] Figure 3 illustrates a magnified view of an area A indicated in Figure 1, in accordance with an embodiment of the present subject matter and demonstrates an interface between the frame member 110 and the cover 160. In an embodiment, a first tongue 113 is provided along the periphery 110b of the frame member 110. The first tongue 113 projects towards the cover 160. The first tongue 113 girdles the aperture of the frame member 110 along the periphery 110b. Concurrently, a first groove 163 is provided at the periphery of the cover 160 corresponding to the first tongue 113. The first groove 163 girdles the cavity of the cover 160 along the periphery of the cover 160. The first groove 163 is adapted to receive the first tongue 113. By coupling the first tongue 113 with the first groove 163, the frame member 110 is attached to the cover 160. In another embodiment, a second tongue 167 is provided adjacent to the first groove 163 at the periphery of the cover 160, the second tongue 167 girdling the cavity of the cover 160 along its periphery. The second tongue 167 projects towards the frame member 110. Concurrently, a second groove 117 is provided adjacent to the first tongue 113 and along the periphery of the frame member 110. The second groove 117 is adapted to receive the second tongue 167, thereby securing assembly of the frame member 110 with the cover 160.
[032] In an embodiment, at a juncture where the frame member 110 and the cover 160 are joined, i.e., where the first tongue 113 intermeshes with the first groove 163 and/or where the second tongue 167 intermeshes with the second groove 117, vinyl adhesive is applied. This ensures a strong permanent bond between the frame member 110 and the cover 160. It also seals the juncture and prevents entry of dust and water into the instrument cluster 100. In another embodiment, a second gasket 192 (shown in Figure 3) is used to line the juncture where the frame member 110 and the cover 160 are joined to make the juncture watertight.
[033] Figure 4 illustrates a rear perspective view of the instrument cluster 100 without the cover 160, in accordance with an embodiment of the present subject matter. Figure 5 illustrates an exploded view of the instrument cluster without the cover 160, illustrated in Figure 4. The instrument cluster 100 includes the base member 130. The base member 130 is disposed in the hollow space 112 and mounted to the frame member 110. In an embodiment, the base member 130 is disposed in the aperture 110a of the frame member 110 and is affixed on the frame member 110 by welding. In another embodiment, the base member 130 is attached to the frame member 110 with the aid of fasteners. In another embodiment, the base member 130 is an aluminium plate. The base member 130 has a first surface 130f and a second surface 130r opposite the first surface 130f. The display screen 120 is affixed to the first surface 130f. In an embodiment, a display processor 122 is attached to the second surface 130r of the base member 130. The display processor 122 is configured to control the display screen 120.
[034] Figure 6 illustrates a rear perspective view of the instrument cluster 100, without the cover 160, in accordance with an embodiment of the present subject matter. The instrument cluster 100 includes the primary controller board 140 disposed in the hollow space 112 and attached to the second surface 130r of the base member 130. In an embodiment, the primary controller board controls the display processor and provides the interface with the vehicle CAN bus. In another embodiment, the primary controller board 140 is configured to control every other component of the instrument cluster 100. In another embodiment, the display processor 122 is sandwiched between the base member 130 and the primary controller board 140. In a further embodiment, the instrument cluster 100 includes the secondary controller board 150 attached to the second surface 130r of the base member 130. In an embodiment, the secondary controller board 150 is adapted to receive Near Field Communication (NFC) chipset on it to provide NFC capabilities to the instrument cluster. In another embodiment, the secondary controller board 150 is disposed downwardly of the primary controller board 140. The secondary controller board 150 also overlaps at least partially with the display processor 122. In yet another embodiment, the secondary controller board 150 is provided with an ambient light sensor to detect ambient light and convey this data to the primary controller board 140 to control brightness and theme of the display screen 120 of the instrument cluster 100. The primary controller board 140 may then process the data and direct the display processor 122 to increase or lower brightness of the display screen 120. In another embodiment, the secondary controller board 150 is provided with a Bluetooth module. In a further embodiment, the primary controller board 140 and the secondary controller board 150 are affixed to the base member 130 with the aid of fasteners.
[035] The instrument cluster 100 includes one or more antennae 124 to provide wireless communication capabilities to the instrument cluster 100. In an embodiment, the one or more antennae 124 are affixed to a rear surface 120r of the display screen 120. In another embodiment, the one or more antennae 124 include at least a 4G antenna. In yet another embodiment, the one or more antennae 124 include at least a Wi-Fi antenna. In the illustrated embodiment, the instrument cluster 100 includes a pair of 4G antennae on either of a left and right side of the instrument cluster 100 and a Wi-Fi antenna disposed downwardly of the pair of 4G antennae. The inbuilt antennae 124 allows the instrument cluster 100 to connect to internet for OTA software updates and Internet of Things (IoT) capabilities. In an embodiment, the base member 130 is provided with one or more cut-outs 132 overlapping with the one or more antennae 124. The cut-outs 132 expose the one or more antennae 124 to the hollow space 112 for enhanced reception of signals. This allows for faster and more efficient communication with minimum data loss. Additionally, the antennae 124 may be connected to antenna lines provided on the frame member 110 and/or the cover 160. Since antenna lines are exposed to atmosphere, receptivity may be further enhanced.
[036] In an embodiment, the instrument cluster 100 includes the camera 134. The camera 134 is attached to the base member 130 and faces the user. In an embodiment, the camera 134 is affixed to the first surface 130f of the base member 130. In another embodiment, the camera 134 is disposed in a cut-out provided in the base member 130, such that a camera module projects toward the cover 160 from the second surface 130r and a camera lens faces the user from the first surface 130f. This allows for effective space management inside the instrument cluster 100. In an embodiment, the camera 134 is adapted to perform face recognition for keyless entry into the vehicle or keyless authentication for operating the vehicle/device. In another embodiment, the camera 134 is adapted to monitor alertness of the user while operating the vehicle/device. This data is utilised for aiding advanced rider assist systems and enhances user safety. In yet another embodiment, the camera 134 is adapted to identify gestures of the user to enable the user to communicate with the vehicle/device. In a further embodiment, the camera 134 includes an Infrared (IR) sensor. The IR sensor enables the camera to perform face recognition, monitor alertness of the user and identify gestures in low light conditions.
[037] In an embodiment, the instrument cluster 100 includes a plurality of clips 194 for guided mounting of the primary controller board 140 and the secondary controller board 150 to the base member 130. The plurality of clips 194 are attached to the base member 130. Provision of the plurality of clips 194 increases the ease of assembly by helping to locate the primary controller board 140 and the secondary controller board 150 on the base member 130. The plurality of clips 194 also holds the primary controller board 140 and the secondary controller board 150 in place during operation of the vehicle/device thereby preventing relative movement and securing the electrical contacts between components.
[038] The instrument cluster 100 includes the one or more wire guides 142. In an embodiment, the one or more wire guides 142 are attached to the primary controller board 140 with the aid of fasteners. In another embodiment, the one or more wire guides 142 are attached to the primary controller board 140 and the primary controller board 140 is attached to the base member 130 with the aid of common fasteners. In yet another embodiment, the one or more wire guides 142 perform guided routing of wires that connect the primary controller board 140, the display processor 122, and the secondary controller board 150.
[039] Referring to Figure 4 again, the instrument cluster 100 includes a plurality of cables to connect components of the instrument cluster 100 to the primary controller board 140 and/or the display processor 122. In an embodiment, the plurality of cables used for this purpose is Flexible Printed Circuit (FPC) cables. In an embodiment, a first FPC cable 125 is used to connect the display screen 120 to the primary controller board 140 and the display processor 122. In another embodiment, a second FPC cable 127 is used to connect a touch screen 120 to the primary controller board 140 and the display processor 122. In yet another embodiment, a third FPC cable 129 is used to connect a backlight of the display screen 120 to the primary controller board 140 and the display processor 122.
[040] Figure 7 illustrates a rear perspective view of the cover 160 of the instrument cluster 100, in accordance with an embodiment of the present subject matter. Figure 8 illustrates an exploded view of components shown in Figure 7. Referring to Figures 7 and 8, the cover 160 includes a first heat sink 180, a second heat sink 182 and a third heat sink 184. In an embodiment, the first heat sink 180 is adapted to dissipate heat from the display screen 120. The second heat sink 182 and third heat sink 184 are adapted to dissipate heat from different electronic components of the primary controller board 140. The planar surfaces of the heat sinks 180, 182, 184 disposed inside the hollow space 112 are in contact with the display screen 120 and the heat generating electronic components of the primary controller board 140. Maximum heat in the instrument cluster 100 is generated in the display screen 120 and the primary controller board 140. By providing dedicated heat sinks 180, 182, 184 for these two components, heat can be effectively transferred from the instrument cluster 100 and excellent thermal performance can be ensured. In an embodiment, the first heat sink 180, the second heat sink 182, and the third heat sink 184 are enmoulded with the shell 161 so as to form an integral part of the cover 160.
[041] In another embodiment, the first heat sink 180, the second heat sink 182 and the third heat sink 184 have finned structures extending outwardly of the hollow space 112 from a rear of the shell 161. The finned structures are exposed to environment outside the instrument cluster 100. The finned structures are adapted to dissipate heat absorbed by the heat sinks 180, 182 and 184 from components of the instrument cluster 100 to atmosphere. In yet another embodiment, a posterior surface of the heat sinks 180, 182 and 184 exposed outside the instrument cluster 100 is coupled to a cooling system, for e.g. a liquid cooling system, in order to achieve quick cooling of components of the instrument cluster, especially when the instrument cluster is disposed in hot environments.
[042] In a further embodiment, a breather hole 162 is provided in the shell 161. The breather hole 162 is in communication with an interior of the instrument cluster 100 and is adapted to exhaust gases accumulated in the hollow space 112. The breather hole 162 prevents build up of entrapped gases within the instrument cluster 100, thereby increasing service life. In an embodiment, the cap 162a (shown in Figure 1) is provided to close the breather hole 162 The cap 162a prevents entry of dust and water into the instrument cluster 100. The cap 162a may be made of resin, silicone or rubber material. Additionally, the cap 162a may include minute perforations for gases to escape from the hollow space 112.
[043] In a further embodiment, the instrument cluster 100 includes an access door 166 provided in the shell 161. In an embodiment, the access door 166 can be opened to access an input port of the instrument cluster 100. The input port may be of a USB type. In another embodiment, software of the instrument cluster 100 can be updated or debugged and the instrument cluster 100 can be calibrated by accessing the input port through the access door 166. In yet another embodiment, a first gasket 190 or an O-ring is provided along a periphery of the access door 166 to prevent entry of dust and water into the instrument cluster 100. In a further embodiment, the cover 160 includes a plurality of mounting points 168 to mount the instrument cluster 100 on an external structure. In an embodiment, the mounting points 168 project outwardly from the shell 161 in a direction opposite to the hollow space 112. The mounting points 168 can be used for fastening the instrument cluster 100 to the external structure. In an embodiment, the external structure is a handlebar or a dashboard of the vehicle. In another embodiment, the external structure is a mounting bay provided in the device or the power tool.
[044] Referring to Figures 9 and 10, the thermal pads 170 are provided at interfaces between heat generating components of the instrument cluster 100, including the display screen 120 and the primary controller board 140, and the heat sinks 180, 182 and 184. The thermal pads 170 fill any gaps that may be present between heat generating components of the instrument cluster 100 and the heat sinks 180, 182 and 184. By providing adequate area of contact, heat is dissipated from heat generating components of the instrument cluster 100 to the heat sinks 180, 182 and 184 through the thermal pads 170. Hence, the thermal pads 170 act as a medium for transfer of heat to the heat sinks 180, 182 and 184, which can then be dissipated to atmosphere. In an embodiment, thermal adhesives are used to bind together surface of heat generating components of the instrument cluster 100 with surface of the thermal pads 170 and surface of the heat sinks 180, 182 and 184 with surface of the thermal pads 170. The thermal glue holds components in place under external stresses and under thermal deformation of components to ensure effective heat transfer at all times. In yet another embodiment, thermal pads 170 are not used, and instead an interface between surface of heat generating components of the instrument cluster 100 and surface of the heat sinks 180, 182 and 184 are directly bonded to each other using thermal glue.
[045] Figure 11 illustrates a perspective view of one or more wire guides 142 of the instrument cluster 100, in accordance with an embodiment of the present subject matter. In an embodiment, the one or more wire guides 142 include a body structure 1421, a mounting hole 1424 and a guide structure 1426. The mounting hole 1424 is formed in the body structure 1421 and the guide structure 1426 is embedded on the body structure 1421. The mounting hole 1424 is adapted to receive a fastener for attaching the wire guide 142 to the primary controller board 140. The guide structure 1426 is adapted to receive the wires from the components of the primary controller board 140 and the secondary controller board 150 and the display processor 122 and for routing the wire. In an embodiment, the guide structure 1426 is formed to take the shape of the wire it is adapted to route. In the illustrated embodiment, the guide structure 1426 has a circular cross-sectional shape adapted to receive a round wire. The guide structure 1426 further has two flexible arms which move apart to receive the wire and comes back to original position to lock the wire in place. The arms move apart again when the wire needs to be removed from the guide structure 1426. In a further embodiment, each wire guide 142 can have varying numbers of mounting holes 1424 and guide structures 1426 depending on its location and application.
[046] The claimed configurations of the instrument cluster as discussed above are not routine, conventional, or well understood in the art, as the claimed configurations of the instrument cluster enable the following solutions to the existing problems in conventional technologies. Advantageously, the present invention provides an instrument cluster and disposition of components in the instrument cluster. Provision of dedicated heat sinks for components that majorly contribute to heat generation like the display screen and the primary controller board allows for better heat dissipation and enhanced thermal management of the instrument cluster. The breather hole prevents accumulation of gases within the instrument cluster, thereby reducing chances of premature failure. The use of the access door facilitates for calibrating, updating and debugging software of the instrument cluster without disassembling it. This non-necessity of disassembly also means that strong joints can be made between the frame member and the cover, thereby increasing water and dust resistance. The use of fasteners for coupling the frame member with the cover has been eliminated in the present invention. Instead, the frame member and the cover has been joined using tongue and groove joints and glue. This makes the instrument cluster aesthetically appealing and water and dust resistant. The instrument cluster also provides for enhanced safety features like detection of user alertness and enhanced security features like biometric verification for keyless entry/operation via a camera system. Furthermore, IoT features are also enabled in the instrument cluster through provision of receptive antennas and Wi-Fi, Bluetooth and NFC capabilities.
[047] While the present invention has been described with respect to certain embodiments, it will be apparent to those skilled in the art that various changes and modifications may be made without departing from the scope of the invention as defined in the following claims.

List of Reference Numerals
100 - instrument cluster
110 - frame member
110a - aperture of the frame member
110b - periphery of the frame member
112 - hollow space
113 - first tongue
114 - very high bonding (VHB) tape
115 - cover lens
117 - second groove
120 - display screen
120r - rear surface of the display screen
122 - display processor
124 - one or more antennae
125 - first FPC cable
127 - second FPC cable
129 - third FPC cable
130 - base member
130f - first surface of the base member
130r - second surface of the base member
132 - one or more cut-outs in the base member
134 - camera
140 - primary controller board
142 - one or more wire guides
1421 - body structure of the one or more wire guides
1424 - mounting hole of the one or more wire guides
1426 - guide structure of the one or more wire guides
150 - secondary controller board
160 - cover
161 - shell of cover
162 - breather hole
162a - cap for breather hole
163 - first groove
164 - port opening
164a - projection in shell around port opening
166 - access door
167 - second tongue
168 - mounting points
170 - thermal pads
180 - first heat sink
182 - second heat sink
184 - third heat sink
190 - first gasket
192 - second gasket
194 - plurality of clips