FIELD OF THE INVENTION:
The invention relates to a lighting luminaire system and more particularly to LED
lighting luminaire system to provide multimode illumination using multiple 5 light sources in
different direction with respect to the user lighting requirement under different circumstances in
a particular region.
BACKGROUND OF THE INVENTION:
10 Over the past two decades, light emitting diodes finds various applications in lighting
requirements since LED technology is highly efficient with environment friendly lighting offers
more advantages over incandescent, neon, and other conventional fluorescent lighting solutions.
Tremendous advancement has been made in the LEDs and the LEDs array modules with suitable
fixture in accordance with the consumer/user lighting applications. Among them, the positioning
15 of LED arrays and the electronic driver unit together in a housing of the LED with particular
mounting arrangement to meet the requirement of lighting applications in the lighting fixture
challenges many problems and limitations based on the applications.
The main problem faced by the end user is that luminaire system will have only one light
20 source that is used for different scenarios. Currently, there are light bulbs and luminaires that can
only change the light intensity or colors or both for the light source via complex controls like
separate dimmers or control signals from an electronic gadget (dedicated lighting controllers,
computers, smart devices, smart phones etc.). However, the direction of light that emitted by the
single light source are kept constant. Hence, the lighting is directed in a particular direction only
25 for the multiple scenarios (ex. High brightness mode, Low brightness mode etc.) by using single
light source. Hence, the currently available luminaire system is not manufactured fully and
efficiently by taking in consideration of the end users lighting requirement for different direction
in a particular lighting region with advantages of better control abilities.
30 In short, there is a significant need for a multimode lighting luminaire system in the
lighting industries using LED array modules and fixing arrangement that will be adaptable to
direct different illumination level in different directions for a variety of lighting requirement.
3
The solution suggested by the present invention to the above mentioned deficiencies is to
combine the multiple lighting requirements for a given area in a single luminaire system. In
addition, this single luminaire system deploys multiple light sources in association with a control
methodology of lighting to provide multimode lighting requirement for the user. This technical
significant effect can be used extensively in the LED technology for the 5 end user space by
integrating the LED lighting fixtures with digital controls and wireless technology to amplify
performance.
OBJECT OF THE INVENTION
10
It is an object of the invention to provide an improved LED luminaire system that
overcomes the problems of the prior art that are discussed above.
It is the main purpose of the invention is to provide an improved lighting luminaire
15 system with mounting arrangement of multiple light sources in a single housing that is readily
adaptable to a variety of user lighting requirement.
It is another object of the invention to provide an improved multimode lighting
illumination system having multiple light sources, each mounted with particular configuration to
20 provide illumination in different level in different direction.
It is further object of the invention to provide an improved lighting luminaire system with
methodology that makes an adequate provision for the user/consumer to select one of the light
sources with particular mode of illumination.
25
Thus, the present invention with a novel concept of multimode lighting luminaire system
having design and configuration with multiple light sources which integrated with a controlling
methodology to provide the efficient and better lighting solution to enable the end user to
experience the different lighting effects based on the ON/OFF of the individual light sources.
30
4
SUMMARY OF THE INVENTION
In summary, the present invention provides multimode lighting luminaire system with
configuration of a fixed beam angle for each of the multiple light sources and each of the light
sources are electronically controlled to provide different lighting effects and 5 therefore is not
required to control the beam angles. It achieves the above objects by using white color LEDs in
multiple light sources and provides different lighting effects based on sequentially switching
ON/OFF of the individual light sources. Further it is configured at providing only one power
supply to the multiple Light Sources.
10
In accordance with the present invention, a multimode lighting luminaire system
comprises a housing having a lighting compartment and a diffuser portion. It includes multiple
light sources in a single housing, each mounted at an angle in the lighting compartment and a
light driving unit is connected to an AC power supply inputting a dc power supply to each of
15 light sources. A main/primary switch connected to AC power supply is externally operated by a
user. The light driving unit is electrically connected to each of the light sources to illuminate
each light source in different illumination level. A control circuit comprising an electronic
controller mechanism is disposed between the light driving unit and the multiple light sources.
The electronic controller is integrated internally with a plurality of auxiliary/secondary switches
20 and further is configured with a multiple predefined lighting requirement to provide multimode
illumination in order to allow the user to select particular lighting requirement in a particular
lighting region.
BRIEF DESCRIPTION OF THE DRAWINGS:
25
The achievement of the above objects and the solution is recognized in the luminaire
lighting system by the detailed description in the following specification with reference to the
accompanying drawings.
30 Figure 1 is a general block diagram of one embodiment of the LED luminaire system in
accordance with the present invention.
5
Figure 2 is a diagram of printed circuit board of the present invention incorporating two
light sources of an LED array module, electronic LED driver unit, and Controller unit.
Figure 3A to 3C is an elongated perspective top view and side view of two LED light
sources, each mounted at a fixed angle to the lighting compartment of 5 the housing in a
multimode LED luminaire system in accordance with first exemplary embodiment of the present
invention.
Fig. 3D is a diagram showing the lighting direction of the two light sources with three
10 sequence states of lighting in such a way that first light source is in down direction, second light
source is in up direction and third having both light sources lighting in their respective directions.
Figure 4 is a simplified circuit diagram of two LED light sources in a multimode LED
luminaire system in accordance with first exemplary embodiment of the present invention.
15
Figure 5 is an enlarged top view or sectional side view of two LED light sources with
mounting arrangement at a fixed angle to the lighting compartment of the housing in a LED
luminaire system in accordance with the first exemplary embodiment of the present invention.
20 FIG.6 is a timing diagram showing the sequential switching ON/OFF state of the two
LED light sources by the Controller mechanism within a time period of 0.5 to 10 seconds when
the main switch is operated by user to provide multimode illumination as per the lighting
requirements.
25 Figure 7 is an enlarged top view or sectional side view of three LED light sources, each
mounted at a fixed angle to the lighting compartment of the housing in a multimode LED
luminaire system in accordance with the second exemplary embodiment of the present invention.
DETAILED DESCRIPTION OF THE INVENTION:
30
In order to better understand the present invention and its embodiments of arrangement of
multimode Lighting Luminaire system together with its methodology of operation for the user
lighting requirement is now described in detail with the following figures.
6
Figure 1 is a general block diagram of the present invention showing the components of
lighting luminaire system which includes input AC power supply, power converter for
converting AC to DC and light driving unit integrated with separate DC to DC converter to
convert the DC voltage level of input according to the intensity (illumination) level required for
each of the light sources 5 individually.
The underlying concept and principle of operation of the lighting luminaire arrangement
and the various embodiments and several modifications will now be exclusively illustrated in the
following discussion.
10
In the control mechanism as per the invention, the AC power available is converted to
two appropriate DC power supply for each of the Light sources. The AC to DC converter may
be a Buck converter. The power from the DC to DC converter to the Light Source is routed
through a secondary Switch. For each of the Light sources, there is a corresponding switch that
15 controls the power supply to the Light source and the typical electronic switch like MOSFET
may be used. This secondary switch is turned ON or OFF based on the electronic logic
controller. This controller will take the input signal from the AC to DC converter. This input
signal can be taken directly from the AC source or other appropriate portion of the circuitry. The
Controller stores the current Light Source that is switched ON in the memory and based on the
20 time period of ON/OFF of the AC Power, will provide control signals to either or both of the
Switches (#1, #2) to turn ON the appropriate Light Source.
The configuration of the luminaire system in accordance with the present invention
provides light in different direction. The luminaire system will comprise of at least two or more
25 independent light sources, each light source is individually driven by a light driving unit which
comprises of more than one DC to DC converter to provide DC supply separately for each of the
light source to illuminate them in a different intensity required by the user. The first Light
source LS1 is positioned at an angle of 60 to 90 degrees with respect to the horizontal axis of a
lighting compartment. The second Light source LS2 is placed above Light source LS1 at an
30 angle of 0 to 30 degrees, with respect to the horizontal axis of a lighting compartment. The
operation of the lighting of the two light sources LS1 and LS2 are combined by the electronic
controller mechanism to achieve direct and indirect lighting of the two light sources. This
7
electronic controller along with the light sources is housed by the lighting compartment or
channel which is a plastic or metal extrusion.
The controlled method of lighting of the two light sources is predefined in the electronic
controller mechanism based on the user lighting requirement for a particular region/5 surrounding.
In example 1, using the two light sources the electronic controller provides three different states
of the user lighting requirement. During the first turn ON of power(Main) switch by the user, one
of the light sources will be illuminated and provide certain amount of light in a certain direction.
With the toggle of a switch (from OFF and then ON again with a specific period of time, say 5
10 seconds), a different light source will be illuminated and provide a different amount of light in a
different direction. Similarly, with the toggle of switch again, both the light sources can be
illuminated. This will provide illumination for three different state of user lighting requirement.
Similarly, the above method of lighting is applied with an example 2, where instead of
15 two light sources, three light sources is used. The third light source can be used for a different
application, like a night lamp.
The controlled logic of the present invention is explained with two light sources and with
three light sources which is presented in the following table. The table completely illustrates the
20 number of sequence of states with respect to the users light requirement of a room as an example.
Example 1 with two light sources
State
Light Source Light Engine One
Light Engine
Two Sample Use
Case
Example Control
Signal
Direct / Down
Light
Indirect / Up
Light
1 First Power ON ON OFF
General purpose
illumination of a
room
8
2
Power OFF followed
by Power ON within
5-10 seconds
OFF ON
Ambience
illumination of
room - ex.
During TV
watching
3
Power OFF followed
by Power ON within
5-10 seconds
ON ON
Whole room
including ceiling
is lit for a very
bright light
Example 2 with three light sources
State
Light Source
Light Engine
One
Light
Engine
Two
Light
Engine
Three
Sample Use
Case
Example Control
Signal
Direct /
Down Light
Indirect /
Up Light
Night
Light (like
Edges only
glowing)
1 First Power ON ON OFF OFF
General purpose
illumination of a
room
2
Power OFF followed
by Power ON within
5-10 seconds
OFF ON OFF
Ambience
illumination of
room - ex.
During TV
watching
3
Power OFF followed
by Power ON within
5-10 seconds
OFF OFF ON
Ilumination of
room for night
vision; night
lamp mode
9
4
Power OFF followed
by Power ON within
5-10 seconds
ON ON ON
Whole room
including ceiling
is lit for a very
bright light
Thus, in another aspect of the invention, a method of operating a multimode lighting
luminaire system is provided and is implemented by integrating an improved controller
mechanism in the control unit of the luminaire system. The operation of the multimode lighting
luminaire system provides the controlled method of lighting based on a user lighting 5 requirement
for a particular lighting area when the user operates the main switch of the luminaire system.
The method of lighting of the luminaire system comprising the step of initially predefining the
user lighting requirement in accordance with the lighting area / surroundings to be illuminated.
The number of light sources that is required to meet the user lighting requirements is determined.
10 Each of the light sources is mounted at different angle to provide illumination in different
direction in the lighting compartment.
It is another aspect, the method of controlling the lighting of the light sources comprises
the step of assigning sequentially a state of lighting ON/OFF to each of the light sources with
15 respect to the user predefined lighting requirements. When the lighting sources are operated by
the user, the switching ON/OFF the primary switch (MSW1) is sensed by the input supply
information from the output of AC to DC converter and the operating time period T1 of the
primary switch (MSW1) from OFF to ON is determined. A control signal is generated based on
the determined operating time period T1 of the primary switch. The auxiliary switches which
20 integrated in the control unit is activated/deactivated based on the generated control signal in
order to switch ON/OFF either one, or two, or all of the light sources sequentially in accordance
with the assigned state of lighting requirement. Thus this control signal is generated internally
and controls sequentially the lighting of each of the light sources by allowing the user to select
the particular light source with respective lighting requirement in the lighting area.
25
As per the invention, the control mechanism is currently sensing the Power ON/OFF and
takes it as user input signal for selection of particular lighting requirement. While toggle of
switch (turn ON/OFF) is used as a signal for changing to a different illumination level, any other
10
signaling mechanism like wireless communication (like Zigbee, WiFi, BLE etc.) or wired
communication (ex. Separate control wires from a controller) can be used.
Although the principle and the operation of the present invention has been provided and
described in connection with particular embodiments, it is to be understood 5 that thee
embodiments are only by way of example and are not liming the present invention. Various
modifications and alternative form of the configuration and the method of the invention
disclosed herein may be made without departing from the scope of the invention.

WE CLAIM:
1. A multimode lighting luminaire system comprising;
- a housing with a lighting compartment and a diffuser portion;
- a plurality of light sources (LS1,LS2), each mounted at an angle 5 in the lighting
compartment;
- a light driving unit is connected to an AC power supply inputting a dc power supply,
having a primary switch(MSW1) which is externally operated by a user and is electrically
connected to each of the light sources to illuminate each light sources in different
10 illumination level;
- a control circuit comprising an electronic controller mechanism is disposed between the
light driving unit and the plurality of the light sources, wherein controller is integrated
internally with a plurality of auxiliary switches (ASW1, ASW2) and further is configured
with a multiple predefined lighting requirement to provide multimode illumination in
15 order to allow the user to select particular lighting requirement in a particular lighting
region.
2. The multimode lighting luminaire system as claimed in claim 1, wherein each of the
plurality of the light source is an LED array module.
20
3. The multimode lighting luminaire system as claimed in claim 1, wherein each of the
plurality of the light source is mounted at different angle to provide illumination in
different direction.
25 4. The multimode lighting luminaire system as claimed in claim 1, wherein each of the
plurality of the light source is mounted at same angle to provide illumination in same
direction.
5. The multimode lighting luminaire system as claimed in claim 3, wherein one the light
30 source LS1 is positioned at an angle of 60 to 90 degrees and another light source LS2 is
positioned at an angle of 0 to 30 degrees with respect to the horizontal axis of the lighting
compartment.
12
6. The multimode lighting luminaire system as claimed in claim 1, wherein the light driving
unit comprises a converter to convert the AC power supply into DC power to be inputted
to each of the plurality of the lighting sources.
7. The multimode lighting luminaire system as claimed in claim 6, wherein 5 the converter is
a buck converter operating as a step down switch regulator controlling the DC voltage
level of each of the plurality of the lighting sources.
8. The multimode lighting luminaire system as claimed in claim 1, wherein the light driving
10 unit is connected directly or indirectly to at least one or more of the light sources by the
electronic controller mechanism which operates in relative to the sequential switching
ON/OFF of the primary switch by the user.
9. The multimode lighting luminaire system as claimed in claim 1 or claim 8, wherein the
15 electronic controller mechanism comprises a memory stored with predefined sequential
control logic.
10. The multimode lighting luminaire system as claimed in claim 1, wherein the control
circuit takes the DC input supply information from the output of the AC to DC converter
20 as an input signal and generates a control signal to activate/deactivate either one, or two,
or all of the auxiliary switches (ASW1, ASW2) to turn ON/OFF either one, or two, or all
of the light sources respectively in accordance with the predefined sequential control
logic.
25 11. The multimode lighting luminaire system as claimed in claim 10, wherein the input DC
supply information provides the ON/OFF time period of primary switch operated by the
user.
12. The multimode lighting luminaire system as claimed in claim 9 and 11, wherein the
30 predefined sequential control logic in the electronic controller mechanism comprises at
least two or more predefined states based on user lighting requirements.
13
13. The multimode lighting luminaire system as claimed in claim 1, wherein the electronic
controlling mechanism changes its current state of lighting requirement to next state of
lighting requirement sequentially if the time period of the primary switch operated by the
user from OFF to ON is less than 5-10 seconds.
5
14. The multimode lighting luminaire system as claimed in claim 1 and 13, wherein the DC
supply from the light driving unit is disconnected/connected is directly or indirectly to the
light sources LS1, LS2 by the respective auxiliary switches ASW1, ASW2 in accordance
with the predefined state of lighting requirement in the electronic controlling mechanism.
10
15. A method of operating a multimode lighting luminaire system, the luminaire system
having a housing with a lighting compartment and a diffuser portion; a plurality of light
sources (LS1,LS2) in the lighting compartment; a light driving unit with a primary
switch(MSW1) operated externally by a user provides DC power supply to each of the
15 light sources to obtain different illumination level; and a control circuit having plurality
of auxiliary switches (ASW1, ASW2) is integrated with an electronic controller
mechanism and is disposed between the light driving unit and the plurality of the light
sources, wherein the controller mechanism provides the controlled method of lighting of
the plurality of the light sources sequentially based on a user lighting requirement, and
20 the method comprising the steps of:
- predefining the user lighting requirement in accordance with the lighting
area/surroundings to be illuminated;
- determining the plurality of light sources required to meet the user lighting requirements;
- mounting each light sources at an angle in the lighting compartment; and
25 - controlling sequentially the lighting of each of the light sources in order to provide
multimode illumination with respect to the user predefined lighting requirements of the
lighting area.
16. The method of operating as claimed in claim 15, wherein the step of mounting each of
30 plurality of light sources is mounted at different angle to provide illumination in different
direction.
14
17. The method of operating as claimed in claim 15, wherein the step of controlling the
lighting of the light sources comprising assigning sequentially a state of lighting ON/OFF
to at least one or two or all of the light sources with respect to the user predefined lighting
requirements.
5
18. The method of operating as claimed in claim 15 and 17, wherein the step of controlling
the lighting of light sources comprising
-sequentially switching ON/OFF the primary switch (MSW1) by the user;
-sensing the input supply information from the output of AC to DC converter;
- determining the operating time period T1 of the primary switch 10 (MSW1) from OFF to
ON;
- generating a control signal based on the determined operating time period T1 of the
primary switch; and
-activating/deactivating the plurality of auxiliary switches based on the generated control
15 signal in order to switch ON/OFF either one, or two, or all of the light sources
sequentially in accordance with the assigned state of lighting requirement.
19. The method of operating as claimed in claim 18, wherein the control signal is generated
to change the current state of lighting requirement to next state of lighting requirement
20 sequentially whenever the time period of the primary switch operated by the user from OFF to
ON is less than 5-10 seconds.