Illuminating lamp

Abstract

The invention provides an illumination lamp. The illumination lamp comprises a lamp body and a heat dissipation assembly fixedly connected with the lamp body. Wherein the lamp body comprises a lamp shell and a cover plate, and the heat dissipation assembly is fixed between the lamp shell and the cover plate and comprises a fixed end fixed between the lamp shell and the cover plate and a free end exposed outside the lamp body; the heat dissipation assembly further comprises a plurality of flexible heat dissipation fins which are the same in structure and stacked mutually, the fixed ends of the flexible heat dissipation fins are stacked mutually and fixed between the lamp shell and the cover plate, and a gap is reserved between the free ends of every two adjacent flexible heat dissipation fins. A guide column is arranged on the lamp shell, a guide hole is correspondingly formed in the fixed end of each flexible cooling fin, and the guide column sequentially penetrates through the guide hole of each flexible cooling fin so that the multiple flexible cooling fins can be fixed between the lamp shell and the cover plate. Compared with the prior art, the illuminating lamp has the advantages that the radiating power of the illuminating lamp can be changed by adjusting the number of the radiating fins, so that different requirements of users are met.

Description

Technical Field

[0001] The invention relates to a lighting fixture, belonging to the technical field of lighting. Background Art

[0002] As living standards improve, the power of various household appliances has increased, leading to an increased demand for heat dissipation efficiency. The lifespan and operating temperature of lamps are both closely related to heat dissipation. With the miniaturization and integration of lamps, existing die-cast heat sinks are no longer able to meet these demands. Improving heat dissipation efficiency requires increasing the heat dissipation area. However, increasing the heat dissipation area of ​​existing heat sinks requires adjusting the original lamp body size. This adjustment also makes some space-constrained applications unusable.

[0003] In view of this, it is indeed necessary to improve the existing lighting fixtures to solve the above problems. Summary of the Invention

[0004] An object of the present invention is to provide a lighting fixture, which can improve heat dissipation efficiency without adjusting the size of the lamp body.

[0005] To achieve the above objectives, the present invention provides a lighting fixture comprising a lamp body and a heat dissipation assembly fixedly connected to the lamp body, wherein the lamp body comprises a lamp housing and a cover plate, and the heat dissipation assembly is fixed between the lamp housing and the cover plate and comprises a fixed end fixed between the lamp housing and the cover plate and a free end exposed outside the lamp body;

[0006] The heat dissipation assembly includes a plurality of flexible heat dissipation fins of the same structure and stacked on each other. The fixed ends of each flexible heat dissipation fin are stacked on each other and fixed between the lamp housing and the cover plate. A gap is left between the free ends of two adjacent flexible heat dissipation fins to expand the heat dissipation area of ​​the heat dissipation assembly.

[0007] The lamp housing is provided with a guide column, and each flexible heat sink has a corresponding guide hole on its fixed end. The guide column passes through the guide hole of each flexible heat sink in sequence to fix multiple flexible heat sinks between the lamp housing and the cover plate.

[0008] As a further improvement of the present invention, the heat dissipation assembly includes an adjacent first flexible heat sink and a second flexible heat sink, and the first flexible heat sink and the second flexible heat sink are both provided with an outwardly extending extension arm, and the end of the extension arm of the first flexible heat sink abuts against the outer surface of the second flexible heat sink to separate the first flexible heat sink and the second flexible heat sink and support a gap.

[0009] As a further improvement of the present invention, the heat dissipation component is provided with two groups, namely a first heat dissipation component and a second heat dissipation component, and the plane where the fixed end is located is defined as a reference plane. The free end of the first heat dissipation component is bent upward and extended from the reference plane, and the free end of the second heat dissipation component is bent downward and extended from the reference plane.

[0010] As a further improvement of the present invention, in the first heat dissipation component, the extension arm extends downward from the lower surface of the free end; in the second heat dissipation component, the extension arm extends upward from the upper surface of the free end.

[0011] As a further improvement of the present invention, a fixed space is provided between the lamp housing and the cover plate, and the fixed ends of a plurality of flexible heat sinks are stacked and fixed in the fixed space, defining the fixed space as the center, and the free ends of a plurality of flexible heat sinks extend around the fixed space and are exposed to the outside of the lamp body, and a gap is left between two adjacent flexible heat sinks in the circumferential direction of the fixed space.

[0012] As a further improvement of the present invention, the flexible heat sink also includes a heat sink block vertically arranged at the free end of the flexible heat sink. In the length direction of the flexible heat sink, there are multiple heat sink blocks and they are spaced apart from each other. Heat sink spacers are respectively fixed on both sides of the heat sink blocks along the width direction of the flexible heat sink.

[0013] As a further improvement of the present invention, the free end is arranged in a rectangular shape, including a first side and a second side that are arranged opposite to each other and parallel to each other, the heat dissipation block includes a first side wall close to the first side and perpendicular to the first side, and a second side wall close to the second side and perpendicular to the second side, the heat dissipation spacer is fixed on both the first side wall and the second side wall, and the heat dissipation spacer completely covers the first side wall and the second side wall.

[0014] As a further improvement of the present invention, the heat dissipation block also includes a bottom wall that is fitted with the free end of the flexible heat sink and a partition wall that is perpendicular to the bottom wall. The first side wall and the second side wall are both perpendicular to the bottom wall. The partition wall is arranged between the first side wall and the second side wall and is spaced apart from the first side wall and the second side wall.

[0015] As a further improvement of the present invention, the heat dissipation block also includes a bottom wall that is fitted with the free end of the flexible heat sink and a partition wall that is perpendicular to the bottom wall. The first side wall and the second side wall are both perpendicular to the bottom wall. The partition wall is arranged between the first side wall and the second side wall and is spaced apart from the first side wall and the second side wall.

[0016] As a further improvement of the present invention, the flexible heat sink includes a stainless steel sheet and a graphene sheet, and the graphene sheet is fixed on the stainless steel sheet and is completely in contact with the stainless steel sheet.

[0017] As a further improvement of the present invention, a positioning hole is provided at the fixed end of the heat dissipation assembly, and corresponding positioning grooves are provided on the lamp housing and the cover plate. The positioning hole and the positioning groove are aligned with each other so that a positioning member can be passed through the positioning hole and the positioning groove to fix the heat dissipation assembly to the lamp housing and the cover plate.

[0018] The beneficial effects of the present invention are as follows: the lighting fixture of the present invention expands the heat dissipation area by fixing a heat dissipation assembly composed of a plurality of stacked flexible heat dissipation fins between the lamp housing and the cover plate, and leaving gaps between adjacent flexible heat dissipation fins; at the same time, the heat dissipation power of the heat dissipation assembly can be adjusted by adjusting the number of flexible heat dissipation fins, thereby enhancing the heat dissipation power of the lighting fixture without increasing the size of the lamp body. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of a lighting fixture according to embodiment 1 of the present invention.

[0020] Figure 2 yes Figure 1 Exploded view of the lighting fixture shown.

[0021] Figure 3 yes Figure 1 The exploded view of the middle cover and the housing is shown.

[0022] Figure 4 yes Figure 2 Schematic diagram of the structure of the heat dissipation component.

[0023] Figure 5 yes Figure 4 Exploded view of the heat sink assembly.

[0024] Figure 6 yes Figure 5 Schematic diagram of the structure of the first flexible heat sink and the second flexible heat sink.

[0025] Figure 7 It is a structural diagram of a lighting fixture according to embodiment 2 of the present invention.

[0026] Figure 8 yes Figure 7 Schematic diagram of the structure of the flexible heat sink.

[0027] Figure 9 yes Figure 8 Exploded view of the flexible heat sink shown. DETAILED DESCRIPTION

[0028] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] See also Figure 1 and Figure 7 As shown, the present invention discloses a lighting fixture 1 , which can change the heat dissipation power of the lighting fixture 1 without adjusting the size of the lamp body 2 .

[0030] Combine Figures 2 to 4 As shown, the lighting fixture 1 includes a lamp body 2 and a heat sink assembly 3 fixedly connected to the lamp body 2. The lamp body 2 includes a lamp housing 21 and a cover plate 22. The heat sink assembly 3 is fixed between the lamp housing 21 and the cover plate 22 and includes a fixed end 31 fixed between the lamp housing 21 and the cover plate 22 and a free end 32 exposed outside the lamp body 2. The heat sink assembly 3 includes a plurality of identically structured, stacked flexible heat sinks 30. The fixed ends 31 of each flexible heat sink 30 are stacked and fixed between the lamp housing 21 and the cover plate 22. A gap is left between the free ends 32 of adjacent flexible heat sinks 30 to expand the heat dissipation area of ​​the heat sink assembly 3. In other words, by adjusting the number of flexible heat sinks 30, the heat dissipation area of ​​the heat sink assembly 3 can be expanded, thereby increasing the heat dissipation efficiency of the lighting fixture 1. Furthermore, by providing the free end 32 outside the lamp body 2, the lighting fixture 1 does not need to adjust the size of the lamp body 2 based on the heat dissipation area of ​​the heat sink assembly 3, making it more versatile and practical.

[0031] Preferably, the flexible heat sink 30 includes a stainless steel sheet 304 and a graphene sheet 305, wherein the graphene sheet 305 is fixed to and completely adheres to the stainless steel sheet 304. Experiments have shown that combining graphene with other heat dissipation materials (such as copper or aluminum, or stainless steel in this embodiment) can effectively improve heat dissipation performance.

[0032] Specifically, the fixed end 31 of the heat dissipation assembly 3 is provided with a positioning hole 312, and the lamp housing 21 and the cover plate 22 are correspondingly provided with positioning grooves 212. The positioning hole 312 and the positioning groove 212 are aligned with each other, so that the positioning member 4 can be passed through the positioning hole 312 and the positioning groove 212 to fix the heat dissipation assembly 3 to the lamp housing 21 and the cover plate 22. Of course, in other embodiments, other fixing methods can be selected, and it is sufficient to simply fix the heat dissipation assembly 3 between the lamp housing 21 and the cover plate 22, and this is not limited to this.

[0033] Preferably, the lamp housing 21 is provided with a guide post 211, and each flexible heat sink 30 has a corresponding guide hole 311 on its fixed end 31. The guide post 211 sequentially passes through the guide hole 311 of each flexible heat sink 30 to secure the multiple flexible heat sinks 30 between the lamp housing 21 and the cover plate 22. The provision of the guide post 211 facilitates installation of the flexible heat sink 30. Optionally, the fixed ends 31 of multiple flexible heat sinks 30 are stacked so that the multiple guide holes 311 align with each other to form a receiving cavity, and the guide post 211 is received within the receiving cavity. When the number of flexible heat sinks 30 is small, the guide post 211 passes through the receiving cavity and is partially exposed outside the receiving cavity. In this case, a guide groove corresponding to the guide hole 311 and the guide post 211 is provided on the cover plate 22, so that the guide post 211 is received in the guide groove or passes through the guide groove and is exposed outside the lamp body 2.

[0034] The heat dissipation assembly 3 can be adapted to any lamp body 2, as long as the lamp body 2 secures the heat dissipation assembly 3 between the lamp housing 21 and the cover plate 22. Of course, in other embodiments, the heat dissipation assembly 3 can be secured to other parts of the lamp body 2, as long as the free end 32 is exposed to the outside of the lamp body 2, without limitation.

[0035] For ease of understanding, the heat dissipation assembly 3 is described below in conjunction with two specific implementations.

[0036] Example 1:

[0037] See also Figures 1 to 6 As shown, in this embodiment, the flexible heat sinks 30 are stacked up and down in the same direction and a gap is left between two adjacent flexible heat sinks 30 .

[0038] The heat dissipation assembly 3 includes a first flexible heat sink 301 and a second flexible heat sink 302 adjacent to each other. Each of the first and second flexible heat sinks 301 and 302 is provided with an outwardly extending extension arm 303. The distal end of the extension arm 303 of the first flexible heat sink 301 abuts against the outer surface of the second flexible heat sink 302, thereby separating the first and second flexible heat sinks 301 and creating a gap. This increases the contact area between the heat dissipation assembly 3 and the air, thereby increasing the heat dissipation area and further improving heat dissipation efficiency. Furthermore, when the bending amplitude of the multiple flexible heat sinks 30 generated by the extension arms 303 meets the bending coefficient, the number of flexible heat sinks 30 can be adjusted to adjust the heat dissipation power, thereby adapting to multiple lighting fixtures 1 with different specifications or requirements.

[0039] Preferably, the extension arm 303 is an extension portion integrally formed with the stainless steel sheet 304. Of course, in other embodiments, the extension arm 303 may be assembled later, which is not limited to this.

[0040] The heat dissipation assembly 3 comprises two groups: a first heat dissipation assembly 33 and a second heat dissipation assembly 34. The plane of the fixed end 31 is defined as a reference plane. The free end 32 of the first heat dissipation assembly 33 bends upward and extends from the reference plane, while the free end 32 of the second heat dissipation assembly 34 bends downward and extends from the reference plane. In the first heat dissipation assembly 33, the extension arm 303 extends downward from the lower surface of the free end 32; in the second heat dissipation assembly 34, the extension arm 303 extends upward from the upper surface of the free end 32. In other words, the free end 32 of the first heat dissipation assembly 33 is higher than the fixed end 31 of the first heat dissipation assembly 33, while the free end 32 of the second heat dissipation assembly 34 is lower than the fixed end 31 of the second heat dissipation assembly 3. This allows the heat dissipation assembly 3 to accommodate more flexible heat dissipation fins 30 while minimizing the bending range of the flexible heat dissipation fins 30. Preferably, the first heat dissipation assembly 33 and the second heat dissipation assembly 34 are symmetrical about the reference plane to minimize the bending range of the heat dissipation fins while maintaining the aesthetics of the heat dissipation assembly 3.

[0041] Example 2:

[0042] See also Figures 7 to 9 As shown, in this embodiment, a fixed space (not shown) is defined between the lamp housing 21' and the cover plate 22'. The fixed ends 31' of multiple flexible heat sinks 30' are stacked and fixed within the fixed space, with the fixed space being defined as the center. The free ends 32' of the multiple flexible heat sinks 30' extend around the fixed space and are exposed outside the lamp body 2'. A gap is left between adjacent flexible heat sinks 30' in the circumferential direction of the fixed space. Preferably, guide holes 311' and positioning holes 312' are correspondingly defined on the fixed ends 31' of the flexible heat sinks 30' to cooperate with the lamp body 2' and thereby secure the flexible heat sinks 30' within the fixed space.

[0043] The flexible heat sink 30' also includes a heat sink block 35 perpendicularly disposed at the free end 32' of the flexible heat sink 30'. Multiple heat sink blocks 35 are provided and spaced apart along the length of the flexible heat sink 30'. Heat sink spacers 36 are fixed to either side of the heat sink block 35 along the width of the flexible heat sink 30'. Preferably, when the flexible heat sink 30' is bent toward the heat sink block 35, a gap remains between adjacent heat sink blocks 35, meaning that the heat sinks on adjacent heat sink blocks 35 do not collide. The provision of the heat sink blocks 35 and heat sink spacers 36 further improves the heat dissipation efficiency of the flexible heat sink 30'.

[0044] In this embodiment, the heat dissipation block 35 is fixed on the stainless steel sheet 304 ′, and the graphene sheet 305 ′ is fixed on a side of the stainless steel sheet 304 ′ facing away from the heat dissipation block 35 .

[0045] Specifically, the free end 32' is rectangular and includes a first side 37 and a second side 38 that are oppositely arranged and parallel to each other. The heat dissipation block 35 includes a first side wall 351 close to the first side 37 and perpendicular to the first side 37, and a second side wall 352 close to the second side 38 and perpendicular to the second side 38. The heat dissipation spacer 36 is fixed on both the first side wall 351 and the second side wall 352, and the heat dissipation spacer 36 completely covers the first side wall 351 and the second side wall 352.

[0046] The heat dissipation block 35 further includes a bottom wall 353 that is aligned with the free end 32' of the flexible heat sink 30' and a partition wall 354 that is perpendicular to the bottom wall 353. The first side wall 351 and the second side wall 352 are both perpendicular to the bottom wall 353. The partition wall 354 is disposed between the first side wall 351 and the second side wall 352 and is spaced apart from the first side wall 351 and the second side wall 352. This further expands the heat dissipation area and thereby improves heat dissipation efficiency.

[0047] In summary, the lighting fixture 1 of the present invention expands the heat dissipation area by fixing a heat dissipation assembly 3 composed of a plurality of flexible heat dissipation fins 30 stacked between the lamp housing 21 and the cover plate 22, and leaving gaps between adjacent flexible heat dissipation fins 30; at the same time, by adjusting the number of flexible heat dissipation fins 30, the heat dissipation power of the heat dissipation assembly 3 can be adjusted, thereby enhancing the heat dissipation power of the lighting fixture 1 without increasing the size of the lamp body 2.

[0048] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A lighting fixture, comprising a lamp body (2) and a heat dissipation assembly (3) fixedly connected to the lamp body (2), characterized in that: The lamp body (2) comprises a lamp housing (21) and a cover plate (22); the heat dissipation assembly (3) is fixed between the lamp housing (21) and the cover plate (22), and comprises a fixed end (31) fixed between the lamp housing (21) and the cover plate (22) and a free end (32) exposed outside the lamp body (2); The heat dissipation assembly (3) comprises a plurality of flexible heat dissipation sheets (30) of identical structure and stacked on each other, the fixed ends (31) of each flexible heat dissipation sheet (30) are stacked on each other and fixed between the lamp housing (21) and the cover plate (22), and a gap is left between the free ends (32) of two adjacent flexible heat dissipation sheets (30) to expand the heat dissipation area of ​​the heat dissipation assembly (3); A guide column (211) is provided on the lamp housing (21), and a guide hole (311) is correspondingly provided on the fixed end (31) of each flexible heat sink (30), and the guide column (211) passes through the guide hole (311) of each flexible heat sink (30) in sequence, so as to fix the plurality of flexible heat sinks (30) between the lamp housing (21) and the cover plate (22).

2. The lighting fixture according to claim 1, characterized in that: The heat dissipation assembly (3) comprises a first flexible heat sink (301) and a second flexible heat sink (302) adjacent to each other, wherein the first flexible heat sink (301) and the second flexible heat sink (302) are both provided with an extension arm (303) extending outward, and the end of the extension arm (303) of the first flexible heat sink (301) abuts against the outer surface of the second flexible heat sink (302) so as to separate the first flexible heat sink (301) and the second flexible heat sink (302) and to support a gap.

3. The lighting fixture according to claim 2, characterized in that: The heat dissipation component (3) is provided with two groups, namely a first heat dissipation component (33) and a second heat dissipation component (34), wherein the plane where the fixed end (31) is located is defined as a reference plane, the free end (32) of the first heat dissipation component (33) is bent upward and extended from the reference plane, and the free end (32) of the second heat dissipation component (34) is bent downward and extended from the reference plane.

4. The lighting fixture according to claim 3, characterized in that: In the first heat dissipation component (33), the extension arm (303) extends downward from the lower surface of the free end (32); in the second heat dissipation component (34), the extension arm (303) extends upward from the upper surface of the free end (32).

5. The lighting fixture according to claim 1, characterized in that: A fixed space is provided between the lamp housing (21) and the cover plate (22); fixed ends (31) of a plurality of flexible heat sinks (30) are stacked and fixed in the fixed space, with the fixed space defined as the center; free ends (32) of the plurality of flexible heat sinks (30) extend around the fixed space and are exposed outside the lamp body (2); and in the circumferential direction of the fixed space, a gap is left between two adjacent flexible heat sinks (30).

6. The lighting fixture according to claim 5, characterized in that: The flexible heat sink (30) further comprises a heat sink block (35) vertically arranged at the free end (32) of the flexible heat sink (30); in the length direction of the flexible heat sink (30), a plurality of heat sink blocks (35) are provided and are spaced apart from each other; heat sink spacers (36) are respectively fixed to both sides of the heat sink blocks (35) in the width direction of the flexible heat sink (30).

7. The lighting fixture according to claim 6, characterized in that: The free end (32) is arranged in a rectangular shape, and comprises a first side edge (37) and a second side edge (38) which are arranged opposite to each other and parallel to each other; the heat dissipation block (35) comprises a first side wall (351) close to the first side edge (37) and perpendicular to the first side edge (37), and a second side wall (352) close to the second side edge (38) and perpendicular to the second side edge (38); the heat dissipation spacer (36) is fixed on both the first side wall (351) and the second side wall (352), and the heat dissipation spacer (36) completely covers the first side wall (351) and the second side wall (352).

8. The lighting fixture according to claim 7, characterized in that: The heat dissipation block (35) further comprises a bottom wall (353) arranged in close contact with the free end (32) of the flexible heat dissipation sheet (30) and a partition wall (354) arranged perpendicular to the bottom wall (353); the first side wall (351) and the second side wall (352) are both arranged perpendicular to the bottom wall (353); the partition wall (354) is arranged between the first side wall (351) and the second side wall (352) and is spaced apart from the first side wall (351) and the second side wall (352).

9. The lighting fixture according to claim 1, characterized in that: The flexible heat sink (30) comprises a stainless steel sheet (304) and a graphene sheet (305); the graphene sheet (305) is fixed on the stainless steel sheet (304) and is completely in contact with the stainless steel sheet (304).

10. The lighting fixture according to claim 1, characterized in that: A positioning hole (312) is provided at the fixed end (31) of the heat dissipation assembly (3); positioning grooves (212) are correspondingly provided on the lamp housing (21) and the cover plate (22); the positioning hole (312) and the positioning groove (212) are aligned with each other so that a positioning member (4) can be passed through the positioning hole (312) and the positioning groove (212) to fix the heat dissipation assembly (3) with the lamp housing (21) and the cover plate (22).

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