Lamp

Abstract

The present application provides a lamp, comprising a lamp body and a light source, wherein the lamp body comprises a bottom surface and a side wall extending upwards around the bottom surface, the end of the side wall facing away from the bottom surface is a light outlet, and the light source is arranged on the bottom surface of the lamp body and emits light toward the light outlet. The lamp further comprises an adapter board and a light source mount, wherein the adapter board is connected to a power supply and is electrically connected to the light source to supply power to the light source, the light source mount comprises a support plate and snap-fit protrusions extending from the support plate to the bottom surface, the bottom surface is provided with snap-fit holes, the snap-fit protrusions are in snap-fit to the snap-fit holes, and the light source and the adapter board are stacked and sandwiched between the bottom surface and the support plate.

Description

Lighting fixtures

[0001] Cross-referencing

[0002] This application claims priority to Chinese Patent Application No. 202423040733.6, filed on December 9, 2024, entitled "Lighting Fixture," the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of lighting technology, and in particular to a luminaire. Background Technology

[0004] LED lighting is characterized by low energy consumption, environmental friendliness, and long lifespan, making it the mainstream product in the current lighting industry. Currently, in indoor lighting scenarios, in addition to main lights such as ceiling lights and chandeliers, downlights and spotlights are often added as supplementary lighting. Downlights and spotlights are small in size and compact in structure, typically using COB (Chip On Board) light sources. COB is a packaging method that directly encapsulates multiple LED chips onto a metal-based printed circuit board.

[0005] Currently, the method for mounting and fixing COB light source substrates on lamp holders is through light source brackets. These brackets are secured to the lamp holders with screws, and the COB light source substrate is sandwiched between the lamp holder and the bracket. This screw connection method is cumbersome and inefficient. Furthermore, existing brackets are designed to be compatible with COB light source boards, making it impossible to effectively secure COB light source boards of different sizes. This necessitates the manufacture of brackets of varying sizes, resulting in a certain degree of resource waste. Summary of the Invention

[0006] This application provides a lamp fixture, including a lamp body and a light source. The lamp body includes a bottom surface and a side wall extending upward around the bottom surface. One end of the side wall opposite to the bottom surface is a light outlet. The light source is disposed on the bottom surface of the lamp body and emits light facing the light outlet. The lamp fixture is characterized in that: the lamp fixture further includes an adapter plate and a light source bracket. The adapter plate is connected to a power supply and electrically connected to the light source to supply power to the light source. The light source bracket includes a bracket plate and a claw extending from the bracket plate to the bottom surface. The bottom surface is provided with a snap-fit ​​hole. The claw and the snap-fit ​​hole are engaged. The light source and the adapter plate are stacked and sandwiched between the bottom surface and the bracket plate.

[0007] In one embodiment, the light source bracket further includes an isolation wall that surrounds the outer periphery of the bracket plate and extends away from the light source.

[0008] In one embodiment, the luminaire further includes a light distribution element, the light-emitting surface of which covers the upper edge of the isolation wall.

[0009] In one embodiment, the light distribution element includes a lens, a lens reflector, and a light guide.

[0010] In one embodiment, the inner side of the sidewall of the lamp body is provided with a positioning rib, and the outer side of the isolation wall is provided with a positioning groove that cooperates with the positioning rib.

[0011] In one embodiment, the bracket plate facing the light source has a recessed groove to form a cavity for accommodating the adapter plate, and the groove opening is provided with an inwardly extending buckle.

[0012] In one embodiment, the lamp body is provided with an anti-detachment rib, which is located on the side of the latching hole away from the light source. The anti-detachment rib is at least partially located in the axial projection of the latching hole. The latch includes an arm and a head. The arm has a latching groove, and the head protrudes toward the anti-detachment rib.

[0013] In one embodiment, the adapter plate is provided with two elastic arms, and the free end of the elastic arms is provided with a conductive contact, which is electrically connected to the light source.

[0014] In one embodiment, the light source bracket is further provided with a screw post, the screw post having a through threaded hole on its inner side, the post protruding towards the light source, and the bottom surface of the lamp body having a screw post cavity for accommodating the screw post.

[0015] In one embodiment, the luminaire is a downlight or spotlight, and the light source is a COB light source. Attached Figure Description

[0016] Figure 1 is a structural schematic diagram of a lamp according to a preferred embodiment of this application;

[0017] Figure 2 is an exploded view of a lamp according to a preferred embodiment of this application;

[0018] Figure 3 is a cross-sectional view of a lamp according to a preferred embodiment of this application;

[0019] Figure 4 is a structural schematic diagram of the lamp body in a preferred embodiment of the lamp fixture of this application;

[0020] Figure 5 is a structural schematic diagram of the light source bracket in a preferred embodiment of the lamp according to this application;

[0021] Figure 6 is a structural schematic diagram of the adapter plate in a lamp according to a preferred embodiment of this application. Detailed Implementation

[0022] The lighting fixture proposed in this application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] Figure 1 is a schematic diagram of the external structure of a lamp fixture according to a preferred embodiment of this application. This embodiment is a track spotlight, including a lamp body 1 and a track connecting seat 8. In other preferred embodiments, the lamp fixture may also be a recessed spotlight, downlight, surface-mounted downlight, etc., and this application does not limit it to this.

[0024] Figures 2 and 3 are exploded and sectional views of the lamp fixture of the embodiment in Figure 1, respectively. As shown, the lamp fixture includes a lamp body 1, a light source 2, an adapter plate 3, and a light source bracket 4. The light source 2 is a COB light source. As shown in Figure 4, the lamp body 1 includes a bottom surface 101 and a side wall 102 extending upwards around the bottom surface 101. The end of the side wall facing away from the bottom surface 101 is a light outlet 108. The light source 3 is disposed on the bottom surface 101 of the lamp body 1 and emits light towards the light outlet 108.

[0025] The adapter plate 3 provides an electrical connection for the light source 2. As shown in Figure 6, the adapter plate 3 has two flexible arms 301, and conductive contacts 302 are provided on the free ends of the flexible arms 301. During installation, the electrical connection end on the light source 2 is soldered to the conductive contacts 302 on the adapter plate 3 via SMT wave soldering. The adapter plate 3 also has an external connection terminal 303. After a power cable is soldered to the external connection terminal 303, it is connected to the drive power supply to provide power to the light source 2.

[0026] The light source 2 is fixed to the bottom surface 101 by the light source bracket 4. As shown in Figure 5, the light source bracket 4 includes a bracket plate 401. A recessed groove 403 is provided on the side of the bracket plate 401 facing the light source 2. The cavity formed by the recessed groove 403 is used to accommodate the adapter plate 3. The axial projection shape of the recessed groove 403 matches the adapter plate 3, and the adapter plate 3 is precisely embedded in the recessed groove 403 for positioning. To fix the adapter plate 3, a buckle 405 extending into the inner side of the recessed groove 403 is provided at the opening of the groove. In previous designs, the light source bracket had a light source accommodating cavity to fit the light source, resulting in poor versatility. When the light source needed to be replaced, a different light source bracket had to be custom-made. This application adds an adapter plate 3, which fits the light source bracket 4. The size of the adapter plate 3 is fixed, and the position of the conductive contact 302 can be designed according to different light sources 2, thus adapting to more models of COB light sources.

[0027] The bracket plate 401, facing the light source, is also provided with multiple claws 406 extending towards the bottom surface 101. The bottom surface 101 of the lamp body 1 is provided with snap-fit ​​holes 103 that mate with the claws 406. During installation, the welded light source 2 and adapter plate 3 assemblies are snapped into the recessed groove 403 and secured by snap fasteners 405. Then, the light source 2, adapter plate 3, and light source bracket 4 are placed into the lamp body 1 together. The claws 406 pass through the snap-fit ​​holes 103 and snap-fit ​​with the bottom surface 101 of the lamp body 1 to complete the fixation. The light source 2 and adapter plate 3 are stacked and sandwiched between the bottom surface 101 of the lamp body 1 and the bracket plate 401 of the light source bracket 4. To prevent the claws 406 from coming out of the snap-fit ​​holes 103, anti-dislodgement ribs 104 are provided on the side of the snap-fit ​​holes 103 away from the light source 2. The anti-detachment rib 104 protrudes into the locking hole 103 from one side, and at least partially falls into the axial projection of the locking hole 103. The claw 406 includes an arm 4061 and a head 4062. The arm 4061 is elastic, with one end connected to the support plate 401 and the other end being a free end with a head 4062 protruding towards the anti-detachment rib 104. A slot 4063 is provided on the arm 4061. When the claw 406 is inserted into the locking hole 103, the anti-detachment rib 104 pushes the head 4062 away, and the arm 4061 elastically deforms. After the head 4062 has completely passed the anti-detachment rib 104, the arm 4061 springs back to its original position, and the anti-detachment rib 104 locks into the slot 4063 on the arm 4061 to achieve an anti-detachment and self-locking function.

[0028] The embodiment of the lamp includes a two-stage light distribution system. A light distribution element 5 is arranged in the light-emitting direction of the light source 2 to achieve primary light distribution. The light emitted from the light source 2 first passes through the light distribution element 5 and then passes through the reflector 6 for secondary light distribution. The small end of the reflector 6 is connected to the light-emitting surface of the light source 2 and the light distribution element, and the reflector 6 is close to the light outlet 108 of the lamp body 1. In this embodiment, the light distribution element 5 is a lens. In other preferred embodiments, the light distribution element 5 can also be an optical element such as a lens reflector or a light guide. This application does not limit this. There is a gap between the reflector 6 and the light outlet 108. Even if a total internal reflection lens or a lens reflector is used as the light distribution element 5 to reflect most of the light to the light outlet 108, the side of the lens will still be bright, and the bright side will cause light leakage between the reflector 6 and the light outlet 108. To avoid this situation, the light source bracket 4 in this embodiment also includes an isolation wall 402 that surrounds the outer periphery of the bracket plate 401 and extends away from the light source 2. The lens, which serves as the light distribution element 5, has its light-emitting surface covering the upper edge of the isolation wall 402. Besides blocking the lateral light emission from the lens, the isolation wall 402 also acts as a lens support, enabling the lens to be mounted and fixed, thus reducing the number of internal parts and simplifying the structure of the luminaire.

[0029] When the light source bracket 4 is installed into the lamp body 1, it needs to be pressed in forcefully to achieve a snap-fit ​​engagement. To prevent the clip 406 from breaking due to misalignment between the clip and the locking hole 103 during installation, alignment is necessary. Therefore, a positioning rib 105 is provided on the inner side of the side wall 102 of the lamp body 1, and a positioning groove 407 is provided on the outer side of the isolation wall 402. The positioning groove 407 and the positioning rib 105, when engaged, allow for alignment of the clip 406 and the locking hole 103.

[0030] While snap-fit ​​connections are simple to install, they are prone to breakage after disassembly. To reduce the scrap rate, the light source bracket 4 is also equipped with a screw post 408. The screw post 408 has a through threaded hole on its inner side, and the post body of the screw post 408 protrudes towards the light source. Correspondingly, the bottom surface 101 of the lamp body 1 is provided with a screw post cavity 106 to accommodate the screw post 408. A screw passes through the bottom surface 101 and connects with the screw post 408 to fix the light source bracket 4 to the bottom surface 101. This not only reduces the cost of replacing the bracket but also achieves effective contact between the light source 2 and the lamp body 1, resulting in good heat dissipation.

[0031] The description of the preferred embodiments of this application above is for illustrative purposes and is not intended to exhaustively describe or limit the application to the specific forms disclosed. Obviously, many modifications and variations may be made, which may be apparent to those skilled in the art and should be included within the scope of this application as defined by the appended claims.

Claims

1. A lamp fixture, comprising a lamp body and a light source, the lamp body comprising a bottom surface and a side wall extending upward around the bottom surface, the side wall having a light outlet at one end opposite to the bottom surface, the light source being disposed on the bottom surface of the lamp body and emitting light towards the light outlet; the lamp fixture further comprising an adapter plate and a light source bracket, the adapter plate being connected to a power source and electrically connected to the light source to supply power to the light source, the light source bracket comprising a bracket plate and a claw extending from the bracket plate to the bottom surface, the bottom surface being provided with a snap-fit ​​hole, the claw engaging with the snap-fit ​​hole, the light source and the adapter plate being stacked and sandwiched between the bottom surface and the bracket plate.

2. The lighting fixture according to claim 1, wherein: The light source bracket also includes an isolation wall that surrounds the outer periphery of the bracket plate and extends away from the light source.

3. The lighting fixture according to claim 2, wherein: The luminaire also includes a light distribution element, the light-emitting surface of which covers the upper edge of the isolation wall.

4. The lighting fixture according to claim 3, wherein: The light distribution element includes a lens, a lens reflector, and a light guide.

5. The luminaire according to claim 2, wherein: The inner side of the side wall of the lamp body is provided with a positioning rib, and the outer side of the isolation wall is provided with a positioning groove that cooperates with the positioning rib.

6. The luminaire according to claim 1, wherein: The bracket plate facing the light source has a recessed groove, forming a cavity for accommodating the adapter plate. The groove opening is provided with a buckle extending inward.

7. The luminaire according to claim 1, wherein: The lamp body is provided with an anti-detachment rib, which is located on the side of the latching hole away from the light source. The anti-detachment rib is at least partially located in the axial projection of the latching hole. The latch includes an arm and a head. The arm has a latching groove, and the head protrudes toward the anti-detachment rib.

8. The luminaire according to claim 1, wherein: The adapter plate is provided with two elastic arms, and the free end of the elastic arms is provided with conductive contacts, which are electrically connected to the light source.

9. The luminaire according to claim 1, wherein: The light source bracket is also provided with a screw post, the inner side of which has a through threaded hole, the column of which protrudes towards the light source, and the bottom surface of the lamp body is provided with a screw post cavity to accommodate the screw post.

10. The luminaire according to claim 1, wherein: The lamp is a downlight or spotlight, and the light source is a COB light source.

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