Lamp

Abstract

To provide a lighting fixture with enhanced heat dissipation capacity. 【Solution means】The lighting fixture 100 includes a housing 1, a heat dissipation aluminum board 2, a flexible circuit board 3, and a light source 4. The housing includes an attachment portion 11 and a fixing portion 12. The attachment portion is formed in an annular shape. In the height direction of the lighting fixture, one end of the attachment portion is connected to the fixing portion, and the other end extends in a direction away from the fixing portion, surrounding an attachment cavity 13 together with the fixing portion. The heat dissipation aluminum board is provided in the attachment cavity and includes a first heat dissipation portion 21 and a second heat dissipation portion 22. The first heat dissipation portion is connected to the attachment portion, and one end of the second heat dissipation portion is connected to the first heat dissipation portion, and the other end extends in a direction away from the attachment portion and is bonded to the fixing portion. The flexible circuit board is provided on the side of the heat dissipation aluminum board far from the housing.

Description

Technical Field

[0001] This application relates to the technical field of lighting, and particularly to lighting fixtures.

Background Art

[0002] When the light source of a lighting fixture emits light, heat is generated. Without heat dissipation measures for the generated heat, the lifespan of the lighting fixture will be shortened. In related technologies, a metal chassis is used to assist heat dissipation, but the metal chassis is heavy and has significant limitations on the design of the lighting fixture.

Summary of the Invention

[0003] To solve the above technical problems, this application provides a lighting fixture with enhanced heat dissipation ability.

[0004] An embodiment of this application provides a lighting fixture. The lighting fixture includes a housing, a heat dissipation aluminum board, a flexible circuit board, and a light source. The housing includes a mounting part and a fixing part. The mounting part is formed in a ring shape. In the height direction of the lighting fixture, one end of the mounting part is connected to the fixing part, and the other end extends in a direction away from the fixing part. Together with the fixing part, it surrounds a mounting cavity. The heat dissipation aluminum board is provided in the mounting cavity. The heat dissipation aluminum board includes a first heat dissipation part and a second heat dissipation part. The first heat dissipation part is connected to the mounting part. One end of the second heat dissipation part is connected to the first heat dissipation part, and the other end extends in a direction away from the mounting part and is bonded to the fixing part. The flexible circuit board is provided on the side of the heat dissipation aluminum board far from the housing. The light source is provided on the side of the flexible circuit board far from the housing.

[0005] According to the lighting fixture according to the embodiment of the present application, the first heat dissipation part of the heat dissipation aluminum board is connected to the mounting part, the second heat dissipation part of the heat dissipation aluminum board is connected to the fixing part, and the flexible circuit board connected to the light source is connected to the first heat dissipation part, so that the heat generated when the light source operates can be transmitted to the first heat dissipation part. The first heat dissipation part can transmit the heat to the mounting part and the second heat dissipation part, and the second heat dissipation part can transmit the heat to the fixing part. Thereby, the heat dissipation area and heat dissipation capacity of the lighting fixture can be expanded, which helps to extend the life of the lighting fixture. The heat dissipation aluminum board is made of aluminum material and has a light weight, which helps to reduce the weight of the lighting fixture. At the same time, since the area of the heat dissipation aluminum board is small, the insulation requirement of the lighting fixture can be reduced, which helps to reduce the manufacturing cost of the lighting fixture. Furthermore, since the heat dissipation capacity of the lighting fixture is improved, a higher-power light source can be used, and the problem of insufficient luminous flux of the lighting fixture can be solved.

[0006] In one possible embodiment, the lighting fixture further includes a first heat-conducting silicone, and the housing and the heat dissipation aluminum board are connected by the first heat-conducting silicone.

[0007] In one possible embodiment, the lighting fixture further includes a second heat-conducting silicone, and the flexible circuit board is connected to the heat dissipation aluminum board by the second heat-conducting silicone.

[0008] In one possible embodiment, in the height direction of the mounting part, the width of the first heat dissipation part is 12 mm or more.

[0009] In one possible embodiment, the width of the second heat dissipation part is 12 mm or more.

[0010] In one possible embodiment, the first heat dissipation part and the second heat dissipation part are integrally formed.

[0011] In one possible embodiment, a plurality of heat dissipation protrusions are provided on the side of the second heat dissipation part facing the mounting cavity, and the plurality of heat dissipation protrusions are provided at intervals in the extending direction of the second heat dissipation part.

[0012] In one possible embodiment, the orthographic projection of the first heat dissipation portion of the heat dissipation protrusion on the plane where it is located is located outside the contour of the light source.

[0013] In one possible embodiment, the heat dissipation protrusion extends in a direction approaching the flexible circuit board and is connected to the flexible circuit board.

[0014] In one possible embodiment, the housing is an injection molded product.

Brief Description of the Drawings

[0015] The drawings here are incorporated into the specification and form part of the specification, showing the embodiments according to the present application and used to explain the principle of the present application together with the specification. To more clearly explain the embodiments of the present application or the technical solutions in the related art, the drawings necessary for the description of the embodiments or the related art are briefly introduced below. It is obvious that those skilled in the art can obtain other drawings from these drawings without the need for creative labor.

Figure 1

Figure 2

Modes for Carrying Out the Invention

[0016] To more clearly understand the above objects, features and advantages of the present application, the technical solutions of the present application are further described below. It should be noted that the embodiments of the present application and the features included in the embodiments can be combined with each other as long as there is no contradiction.

[0017] In the description of the present invention, the directions or positional relationships indicated by terms such as "up", "down", "front", "rear", "bottom", "inside", "outside", etc. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of the description of the present invention and to simplify the description. It does not indicate or imply that the device or component mentioned must have a specific direction and be structured or operated in a specific direction, so it should not be understood as a limitation to the present invention.

[0018] In the description of the embodiments of the present application, unless otherwise specified, the terms "attachment", "connection", and "connection" should be understood in a broad sense. For example, for "connection", it may be detachably connected, non-detachably connected, directly connected, or indirectly connected through an intermediate medium. Here, "fixed connection" means that they are connected to each other and the relative positional relationship after connection does not change. Also, the directional terms such as "inside" and "outside" mentioned in the embodiments of the present application are only directions with reference to the drawings. Therefore, the directional terms used are for better explaining and understanding the embodiments of the present application, and do not indicate or imply that the device or component mentioned must have a specific direction and be structured or operated in a specific direction, so it should not be understood as a limitation to the embodiments of the present application.

[0019] In the description of the embodiments of the present application, the terms "including", "comprising" or any other variation are intended to cover non-exclusive inclusion. Thus, a process, method, article or apparatus that includes a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to that process, method, article or apparatus. For elements limited by the phrase "comprising one...", unless there are further limitations, the presence of another same element in the process, method, article or apparatus comprising that element is not excluded. For elements limited by the phrase "comprising one...", unless there are further limitations, the presence of another same element in the process, method, article or apparatus comprising that element is not excluded.

[0020] When the light source of the lamp emits light, heat is generated. If there is no heat dissipation measure for the generated heat, the life of the lamp will be shortened. In the related art, a metal chassis is used to assist heat dissipation, but the metal chassis is heavy and there are significant limitations on the design of the lamp.

[0021] In order to solve the above technical problems, the present application provides a lamp.

[0022] Referring to FIG. 1, FIG. 1 is a schematic diagram of a lamp provided in some embodiments of the present application. The lamp 100 includes a housing 1, a heat dissipation aluminum board 2, a flexible circuit board 3 and a light source 4.

[0023] The housing 1 may include a mounting portion 11 and a fixing portion 12. The mounting portion 11 is formed in an annular shape. In the height direction of the lamp 100, one end of the mounting portion 11 is connected to the fixing portion 12, and the other end extends in a direction away from the fixing portion 12, and together with the fixing portion 12, surrounds a mounting cavity 13. Specifically, in the height direction of the lamp 100, the mounting portion 11 may extend from one side of the fixing portion 12 in a direction away from the fixing portion 12. The side wall of the mounting cavity 13 is the mounting portion 11, and the bottom wall is the fixing portion 12. Here, the mounting portion 11 may be formed in an annular shape.

[0024] The heat-dissipating aluminum board 2 may be provided in the mounting cavity 13. Here, the heat-dissipating aluminum board 2 can be connected to the housing 1 by methods such as adhesion, engagement, and connection by fasteners, and this is not limited in the present application.

[0025] The heat-dissipating aluminum board 2 may include a first heat-dissipating portion 21 and a second heat-dissipating portion 22. The first heat-dissipating portion 21 is connected to the mounting portion 11, and one end of the second heat-dissipating portion 22 is connected to the first heat-dissipating portion 21, and the other end extends in a direction away from the mounting portion 11 and is bonded to the fixing portion 12. Specifically, the first heat-dissipating portion 21 is connected to the mounting portion 11, and the second heat-dissipating portion 22 is connected to the fixing portion 12. When the fixing portion 12 is formed in a circular shape, in the radial direction of the fixing portion 12, the second heat-dissipating portion 22 may extend from the edge of the first heat-dissipating portion 21 in a direction away from the mounting portion 11. Thereby, the heat-dissipating aluminum board 2 can be formed in an "L" shape.

[0026] The flexible printed circuit board 3 (Flexible Printed Circuit, FPC) is provided on the side of the heat-dissipating aluminum board 2 far from the housing 1, and the light source 4 is provided on the side of the flexible printed circuit board 3 far from the housing 1, so that the lighting fixture 100 becomes a side-emitting type lighting fixture. Here, the light source 4 may be an LED lamp and may be attached to the flexible printed circuit board 3.

[0027] Thereby, the heat-dissipating aluminum board 2 can directly reduce the original temperature of the lighting fixture 100 from 100 °C to 83 °C, can reduce the temperature by 17 °C, and can improve the heat dissipation efficiency by 17%. Thereby, the lifespan of the light source 4 can be extended, and the risk of damage to the light source 4 can be avoided.

[0028] According to the lighting fixture 100 according to the embodiment of the present application, the first heat dissipation part 21 of the heat dissipation aluminum board 2 is connected to the mounting part 11, the second heat dissipation part 22 of the heat dissipation aluminum board 2 is connected to the fixing part 12, and the flexible circuit board 3 connected to the light source 4 is connected to the first heat dissipation part 21. When the light source 4 operates, the heat generated can be transmitted to the first heat dissipation part 21. The first heat dissipation part 21 can transmit the heat to the mounting part 11 and the second heat dissipation part 22, and the second heat dissipation part 22 can transmit the heat to the fixing part 12. Thereby, the heat dissipation area and the heat dissipation capacity of the lighting fixture 100 can be expanded, which helps to extend the lifespan of the lighting fixture 100. The heat dissipation aluminum board 2 is made of aluminum material and has a light weight, which helps to reduce the weight of the lighting fixture 100. At the same time, since the area of the heat dissipation aluminum board 2 is small, the insulation requirement of the lighting fixture 100 can be reduced, which helps to reduce the manufacturing cost of the lighting fixture 100. Furthermore, since the heat dissipation capacity of the lighting fixture 100 is improved, a higher-power light source 4 can be used, and the problem of insufficient luminous flux of the lighting fixture 100 can be solved.

[0029] Continuing to refer to FIG. 1, in some embodiments, the lighting fixture 100 may further include a first thermal conductive silicone 5. The housing 1 and the heat dissipation aluminum board 2 may be connected by the first thermal conductive silicone 5. Specifically, the first heat dissipation part 21 may be connected to the mounting part 11 by the first thermal conductive silicone 5, and the second heat dissipation part 22 may be connected to the mounting part 11 by the first thermal conductive silicone 5. Here, the first thermal conductive silicone 5 may cover the surface of the heat dissipation aluminum board 2 facing the housing 1.

[0030] Thereby, by providing the first thermal conductive silicone 5, the heat of the heat dissipation aluminum board 2 can be quickly transmitted to the housing 1, which helps to improve the heat dissipation performance of the lighting fixture 100. At the same time, the first thermal conductive silicone 5 also has good insulation performance, which can ensure the operation safety and reliability of the lighting fixture 100.

[0031] Continuing to refer to FIG. 1, in some embodiments, the lighting fixture 100 may further include a second heat-conducting silicone (not shown). The flexible circuit board 3 may be connected to the heat-radiating aluminum board 2 by the second heat-conducting silicone. Here, the second heat-conducting silicone may cover the surface of the flexible circuit board 3 facing the heat-radiating aluminum board 2. Thereby, by providing the second heat-conducting silicone, the heat of the flexible circuit board 3 can be quickly transferred to the heat-radiating aluminum board 2, which helps to further improve the heat dissipation performance of the lighting fixture 100. At the same time, the second heat-conducting silicone also has good insulation performance, which can ensure the operation safety and reliability of the lighting fixture 100.

[0032] Continuing to refer to FIG. 1, in some embodiments, in the height direction of the mounting portion 11, the width of the first heat-radiating portion 21 is 12 mm or more. Here, the "width" means the distance between two opposite edges of the first heat-radiating portion 21. By limiting the width of the first heat-radiating portion 21, the heat dissipation effect of the first heat-radiating portion 21 can be ensured, which helps to ensure the heat dissipation effect of the lighting fixture 100.

[0033] For example, the width of the first heat-radiating portion 21 may be 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, etc.

[0034] Continuing to refer to FIG. 1, in some embodiments, the width of the second heat-radiating portion 22 is 12 mm or more. By limiting the width of the second heat-radiating portion 22, the heat dissipation effect of the second heat-radiating portion 22 can be ensured, which helps to ensure the heat dissipation effect of the lighting fixture 100.

[0035] For example, the width of the second heat-radiating portion 22 may be 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, etc.

[0036] Continuing to refer to FIG. 1, in some embodiments, the first heat dissipation part 21 and the second heat dissipation part 22 are integrally formed. This facilitates the assembly of the heat dissipation aluminum board 2 and helps improve the assembly efficiency of the lighting fixture 100. At the same time, the reliability of the connection between the first heat dissipation part 21 and the second heat dissipation part 22 can be ensured, and heat transfer from the first heat dissipation part 21 to the second heat dissipation part 22 can be better performed.

[0037] Referring to FIG. 2, FIG. 2 is a schematic diagram of a lighting fixture provided in some other embodiments of the present application. In some embodiments, on the side facing the mounting cavity 13 of the second heat dissipation part 22, a plurality of heat dissipation protrusions 6 are provided, and the plurality of heat dissipation protrusions 6 are provided at intervals in the extending direction of the second heat dissipation part 22. Here, "a plurality" means that the number of the heat dissipation protrusions 6 is two or more. By providing the plurality of heat dissipation protrusions 6 in this way, the heat dissipation area of the lighting fixture 100 can be increased, and the heat dissipation performance of the lighting fixture 100 can be further improved.

[0038] As an example, the heat dissipation protrusion 6 and the second heat dissipation part 22 may be an integral part. Installing in this way helps improve the assembly efficiency of the lighting fixture 100.

[0039] Continuing to refer to FIG. 2, in some embodiments, the orthographic projection of the heat dissipation protrusion 6 on the plane where the first heat dissipation part 21 is located is located outside the contour of the light source 4, so that the orthographic projection of the heat dissipation protrusion 6 on the plane where the first heat dissipation part 21 is located and the contour of the light source 4 do not overlap. Installing in this way can avoid the heat dissipation protrusion 6 affecting the light rays emitted from the light source 4 and helps ensure the light-emitting effect of the lighting fixture 100.

[0040] Continuing to refer to FIG. 2, in some embodiments, the heat dissipation protrusion 6 may extend in a direction approaching the flexible circuit board 3 and be connected to the flexible circuit board 3. Thereby, the heat dissipation protrusion 6 can dissipate heat from both the flexible circuit board 3 and the second heat dissipation part 22, and the heat dissipation performance of the lighting fixture 100 can be further improved.

[0041] For example, the housing 1 may be provided with a ventilation opening. By providing the ventilation opening, the heat dissipation performance of the lighting fixture 100 can be further improved.

[0042] Continuing to refer to FIGS. 1 and 2, in some embodiments, the housing 1 may be an injection molded product. By installing it in this way, the manufacturing of the housing 1 becomes easy, and the manufacturing cost can be reduced compared to the metal lighting fixture 100.

[0043] Note that the housing 1 may be made of metal, and this is not limited in the present application.

[0044] In the description of this specification, specific features, structures, materials, or characteristics can be combined in an appropriate manner in any one or more of the embodiments or examples.

[0045] The above description is only a specific embodiment of the present invention, and the protection scope of the present invention is not limited thereto. Those skilled in the art can easily come up with changes or replacements within the technical scope disclosed by the present invention, and all of them should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should follow the scope of the utility model registration claims.

Description of Reference Numerals

[0046] 100 Lighting fixture 1 Housing 11 Mounting portion 12 Fixing portion 13 Mounting cavity 2 Heat dissipation aluminum board 21 First heat dissipation portion 22 Second heat dissipation portion 3 Flexible circuit board 4 Light source 5 First thermal conductive silicone 6 Heat dissipation protrusion

Claims

1. A lighting fixture, comprising: a mounting portion and a fixing portion, wherein the mounting portion is formed in an annular shape, and in the height direction of the lighting fixture, one end of the mounting portion is connected to the fixing portion, and the other end extends in a direction away from the fixing portion, and a housing that surrounds a mounting cavity together with the fixing portion; a heat dissipation aluminum board provided in the mounting cavity and including a first heat dissipation portion and a second heat dissipation portion, wherein the first heat dissipation portion is connected to the mounting portion, and one end of the second heat dissipation portion is connected to the first heat dissipation portion, and the other end extends in a direction away from the mounting portion and is bonded to the fixing portion; a flexible circuit board provided on a side of the heat dissipation aluminum board far from the housing; a light source provided on a side of the flexible circuit board far from the housing; and characterized by the above.

2. Further including a first thermal conductive silicone, wherein the housing and the heat dissipation aluminum board are connected by the first thermal conductive silicone The lighting fixture according to claim 1, characterized by the above.

3. Further including a second thermal conductive silicone, wherein the flexible circuit board is connected to the heat dissipation aluminum board by the second thermal conductive silicone The lighting fixture according to claim 1, characterized by the above.

4. In the height direction of the mounting portion, the width of the first heat dissipation portion is 12 mm or more The lighting fixture according to claim 1, characterized by the above.

5. The width of the second heat dissipation portion is 12 mm or more The lighting fixture according to claim 2, characterized by the above.

6. The first heat dissipation portion and the second heat dissipation portion are integrally formed The lighting fixture according to claim 1, characterized by the above.

7. A plurality of heat dissipation protrusions are provided on a side of the second heat dissipation portion facing the mounting cavity, and the plurality of heat dissipation protrusions are provided at intervals in the extending direction of the second heat dissipation portion The lighting fixture according to claim 1, characterized by the above.

8. The orthographic projection of the heat dissipation protrusion on a plane where the first heat dissipation portion exists is located outside the contour of the light source The lighting fixture according to claim 7, characterized by the above.

9. The heat dissipation protrusion extends in a direction approaching the flexible circuit board and is connected to the flexible circuit board The lighting fixture according to claim 8, characterized by the above.

10. The housing is an injection molded product The lighting fixture according to any one of claims 1 to 9, characterized by the above.

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