Description:It should be understood that the figures are merely schematic and are not drawn to scale. It should also be understood that the same reference numerals are used throughout the figures to indicate the same or similar parts. In the realm of optical design, particularly in the field of lighting and illumination, the concept of glare reduction through the implementation of micro prismatic diffusers assumes a paramount role. The application of this luminaire focuses mainly in the uses for said workstations for said corporate spaces where UGR (unified glare ratio) has be to below screw hole 19, hence to achieve this a technical decorative luminaire was invented to fulfil the needs of aesthetics as well as achieving required technical parameters.
Figure 1 schematically depicts an exploded view of the luminaire consisting of end cap 1 , main housing 2 , PCB mounting plate 3 ,PCB(down) 4, diffuser 5 , acrylic dust cover 6 ,PCB(up) 7 , grub screw 8 , suspension kit 9, where in said end cap 1 are the end covers of the luminaire, design in such a fashion to create a round edged ends for the luminaire. End cap 1 is connected to the main housing 2 with specifically designed slot and inserts mechanism and with grub screw 8 to create a secure fit. Main housing 2 of the luminaire is made out of aluminium extrusion. Using an aluminium extrusion has many benefits, such as being able to create a special design to suit and address mechanical technicality and design intention. Aluminium being stronger and lightweight relative to other known generally used metals and alloys in the luminaire manufacturing industry, gives us an upper hand in creating a mechanically sound luminaire. PCB mounting plate 3 is another aluminium extrusion which is a separate entity designed for mounting of the PCB(down) 4. The main housing 2 is designed in said way to able to accommodate the PCB mounting plate 3 in certain designed grooves, namely PCB mounting plate resting 14, with the leg like pcb mounting plate resting leg 26.
The main housing 2 extruded through a specifically designed die can be extruded up to standard sizes defined by the industry. Having the flexibility of lengths, the main housing 2 can be cut using an industrial metal cutter to any required lengths aiding in multiple size and combinations of the luminaire lengths. main housing main housing 2, PCB mounting plate 3, PCB(down) PCB(down) 4, PCB(up) PCB(up) 7, and acrylic dust cover 6 can be suited to created various lengths and multiple different combinations.
PCB(down) 4 generating consisting of a LED 27 which is the illuminating source of the luminaire . LED 27 placed in said array of 60 LEDs to create an even distribution of light output through the diffuser 5.
Figure 2 depicts the cross-section view of the main housing 2. Previously mentioned diffuser 5 is slid into a specifically designed groove like structure namely diffuser groove 13 to hold the diffuser 5 in place. In figure 3 the same groove for housing the downward facing diffuser 5 is seen, namely end cap diffuser groove 17. Said groove in the main housing 2 and the end cap 1 when assembled together creates an area for the diffuser 5 to sit snuggly. Said thickness of the diffuser 5 is decided in such way to create a snug fit, hence aiding in insect and dust proofing of the inside of the downward components of the luminaire.
Slot like designs namely housing slot 12, housing slot 11 and suspension groove and slot 16 are designed to hold the end cap 1 in place securely with inserts that slot into the respective slots, namely end cap slot-insert 22, end cap slot-insert 21 and end cap slot-insert 20. In figure 3, end cap 1 is further secured to main housing 2 with grub screw 8 into a tapped hole namely screw hole 19 in end cap slot-insert 20 which is inserted into suspension groove and slot 16 of the main housing 2.
In figure 3, end cap 1 is manufactured using a methodology namely high pressure die casting (HPDC), this manufacturing process ensures that end cap 1 is precisely crafted with the required shape, strength, and durability. This is particularly important for maintaining the structural integrity of the luminaire and ensuring that the end cap effectively serves its functions. Rib 18 is a miniscule protrusion onto the surface of the end cap 1. Rib 18 was designed to prevent light leakage from joining crevices of end cap 1 and main housing 2, it overlaps and covers any possible leakage of light. Pcb resting area 23 in the end cap 1 is area of the end cap 1 in which either LHS PCB 28 or RHS PCB 30 of the down pcb can rest or be adhered to. This is done to achieve uniform light distribution at the radii ends.
In figure PCB(down) 4 depicts a cross sectional view of the PCB mounting plate 3, which consist of heat dissipating fins heat dissipating fins 24 which are are designed to dissipate the heat generated by the PCB(down) 4 , fin like design running throughout the extrusion enables the luminaire to be driven at higher wattages achieving required lux levels. Pcb mounting plate resting leg 26 is designed to slot into PCB mounting plate resting 14 in the main housing 2 , a simple slide in mechanism is adopted.
Figure 5 depicts the printed circuit boards of the luminaire namely PCB (down) 4 which in turn consist of LED 27 namely light emitting diode, the illumination source of the luminaire. LED 27 is soldered onto the PCB (down) 4 in a certain way to achieve uniform distribution of light for the downward component of the luminaire. LHS PCB 28 is the left-hand side PCB of the luminaire and RHS PCB 30 being the right hand side of the luminaire, the curved ends in LHS PCB 28 and RHS PCB 30 are made to rest in end cap 1 at pcb resting area pcb resting area 23, this is done to achieve uniformity in the curved ends of the luminaire.
Centre PCB 31 is a modular unit of the luminaire, being able to be placed in multiple quantities to achieve different and customized lengths of the luminaire. These PCB’a are mounted to the pcb resting area 23 and PCB mounting plate 3 by using suitable mounting screws of desired pitch and also adhered using a thermal paste to better dissipate the heat generated by the LED 27.
In Figure 6, diffuser 5 playing a crucial role in controlling and managing the distribution of light emitted by the luminaire, primary purpose and function being glare reduction, even light distribution, softening shadows and enhancing aesthetics.
Pertaining to this invention a specific type of diffuser is used, said micro prismatic diffuser with said honeycomb pattern arrangement. The defining feature of this diffuser is its pattern of small, hexagonal prismatic cells that resemble a honeycomb. These cells are designed to interact with incoming light in a specific way. One of the primary functions of this diffuser is to reduce glare. Glare occurs when strong, direct light causes discomfort or visual impairment. The honeycomb structure scatters and redirects light, ensuring that it is diffused and comfortable for the human eye, hence achieving a Unified Glare Rating (UGR) of less than 19. A UGR value below 19 is considered ideal for most indoor environments, particularly those where tasks that require visual comfort are performed, such as offices, classrooms, and healthcare facilities, it indicates that the lighting system effectively reduces glare, making the space more visually comfortable and less likely to cause eye strain or discomfort for occupants. In said invention, achieving this UGR value qualifies to be a technical luminaire, this is essential for creating lighting environments that are not only functional but also conducive to productivity and well-being.
In scenarios where stringent adherence to UGR is not required the luminaire will use a diffuser 5 made of PMMA (Polymethyl Methacrylate) or PS (Polystyrene) plastics. PMMA being known for it’s high transmissivity, clear and uniform light distribution making it essential for visibility, clean and bright based lighting applications. PS diffusers are mainly used when a good balance is required between transmissivity and illuminance.
Acrylic dust cover 6 from figure 7 , PCB(up) PCB(up) 7 from figure 8 and suspension kit 9 are a part of the upward components of the luminaire. PCB(up) 7 used to creating an upward lighting or an indirect lighting element Indirect lighting creates a gentle, even, and shadow-free illumination. By bouncing light off ceilings or walls, it diffuses the light source, reducing harsh shadows and glare. Suitable for various settings, from residential spaces to commercial and architectural environments, where achieving an inviting and glare-free lighting atmosphere is essential.
In figure 8, the PCB (up) 7 is the printed circuit board containing an array of up LED 33, creating a uniform light distribution. PCB (up) 7 is covered by acrylic dust cover 6 which acts a cover from dust and insect proof.
Figure 9 depicts a front view of the suspension unit of the luminaire namely suspension kit 9 The suspension kit, when used with a GI (Galvanized Iron) wire rope suspension, is a system designed to suspend luminaires, lighting fixtures, or other objects from ceilings or overhead structures. It provides a secure and adjustable method for hanging these objects at a desired height. It has ball bearing 3 point locking mechanism of the GI wire rope, accompanied with a quick spring release of the 3 point ball bearing in one direction only gives us the advantage of being to able to adjust the suspension length.
Locking screw 10 slid into the suspension groove and slot 16 of the main housing 2 where in the suspension kit 9 is tightened from the top giving us a secure mating of the locking screw 10 to the suspension kit 9 and further suspended with GI wire rope GI wire rope 34.
, Claims:1. A Technical Decorative Luminaire, comprising:
a. An end cap (1) manufactured using High-Pressure Die Casting (HPDC).
b. A main housing (2) constructed from aluminium extrusion.
c. A printed circuit board mounting plate (3) made of aluminium extrusion, featuring heat-dissipating fins for efficient heat dissipation from the LED arrays.
d. A downward illuminating printed circuit board (4) with an LED array.
e. A micro prismatic diffuser (5) for light diffusion.
f. A clear acrylic dust cover (6) for dust and insect protection.
g. An upward illuminating printed circuit board (7) with an LED array.
h. Grub screws (8) for securing the end caps to the luminaire.
i. Suspension objects (9) for adjustable suspension from the ceiling

2. The Technical Decorative Luminaire of Claim 1, wherein the end cap (1) features a specifically designed slot and slot inserts (20, 21, 22) combination to securely and firmly slot into corresponding slot inserts (16, 11, 12) respectively within the luminaire housing (2), facilitating a stable attachment. The end cap (1) is further secured to the luminaire housing (2) with a grub screw (8).

3. The Technical Decorative Luminaire of Claim 1, wherein the printed circuit board mounting plate (3) features heat dissipating fins (24) to effectively dissipate heat generated by the LED arrays.

4. The Technical Decorative Luminaire of Claim 1, wherein the end cap (1) incorporates a rib design (18) preventing light leakage from the luminaire's crevices where the end caps meet the luminaire's housing extrusion.

5. The Technical Decorative Luminaire of Claim 1, comprising a slotted groove design in the end cap (1) and the aluminium extrusion (2), specifically designed for securely placing the prismatic diffuser (32).

6. The Technical Decorative Luminaire of Claim 1, wherein the end cap (1) includes a specifically designed PCB resting area (23) for adhesive fixation of the printed circuit board.

7. The Technical Decorative Luminaire of Claim 1, featuring a printed circuit board mounting plate (3) with a designed leg (26) that slides into a groove (14) within the aluminium extrusion (2).

8. The Technical Decorative Luminaire of Claim 1, wherein the smooth contour of the aluminium extrusion (2) and end caps (1) creates a smooth curved surface, contributing to the luminaire's aesthetic appeal.

9. The Technical Decorative Luminaire of Claim 1, further comprising a prismatic diffuser (32) designed to reduce glare and mitigate potential medical issues caused by excessive glare.

10. The Technical Decorative Luminaire of Claim 1, wherein the clear acrylic dust cover (6) is securely slotted into the luminaire housing, preventing the entry of dust and insects.

11. The Technical Decorative Luminaire of Claim 1, further comprising an upper acrylic dust cover designed to prevent dust and insects from depositing onto the upward illuminating PCB component (7) and reducing the output of uplight.

12. The Technical Decorative Luminaire of Claim 1, featuring a suspension groove and slot (16) specifically designed for the suspension of the luminaire using a suspension kit (9) consisting of GI wire rope (34) and locking screw (10) mechanism.

13. The Technical Decorative Luminaire of Claim 1, wherein the modular downward PCB (4) is modular, offering three different types for left, right, and centre designs