A heat dissipation structure for a light source module

Abstract

The present invention provides a heat dissipation structure for a light source module, belonging to the technical field of light source modules, which includes a lamp housing, an exhaust duct, a lamp board, a columnar sealing assembly, and a cooling fan. The lamp board is fixedly installed inside the lamp housing. An intake duct is provided at the bottom of the lamp housing. An exhaust port is formed in the side wall of the lamp housing at a position below the lamp board. The cooling fan is installed inside the intake duct and is used to introduce external air into the lamp housing through the intake duct. The exhaust duct is fixedly arranged on the inner wall of the lamp housing and is communicated with the exhaust port. The columnar sealing assembly is arranged inside the exhaust duct and is used to seal the exhaust duct. When external air is introduced into the lamp housing, the columnar sealing assembly rotates along the inside of the exhaust duct. Compared with the prior art, the embodiment of the present invention can achieve efficient heat dissipation of the lamp board inside the lamp housing, and has the advantages of good heat dissipation effect and strong protection performance.

Description

Technical Field

[0001] The invention belongs to the technical field of light source modules, and in particular is a heat dissipation structure for a light source module. Background Art

[0002] Most existing light source modules are encapsulated inside a shell, where the light source module includes a light board and lamp beads located on one side of the light board. The lamp beads will cause the heat of the light board to increase when illuminated for a long time. Therefore, the heat of the light board needs to be dissipated in time to ensure the normal operation of the light board and the lamp beads.

[0003] In the prior art, fin heat dissipation is mostly used for heat dissipation of lamp boards. When the fin is installed, one end of the fin extends to the inside of the shell, and the other end needs to extend to the outside of the shell. The fin is used to conduct the heat of the lamp board in the shell to the external environment. However, the fin heat dissipation method is generally static heat dissipation, and its heat dissipation effect is poor. In addition, when using fin heat dissipation, since it needs to pass through the shell, a slot corresponding to the fin must be opened on the shell. The existence of the slot will destroy the sealing of the shell, causing external rainwater to easily enter the shell from the slot position, causing the lamp board to be damaged by moisture. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the embodiments of the present invention is to provide a heat dissipation structure for a light source module.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] A heat dissipation structure for a light source module comprises a lamp housing, an exhaust duct, a lamp panel, a columnar sealing component and a heat dissipation fan.

[0007] The lamp board is fixedly installed inside the lamp housing, an air intake duct is arranged at the bottom of the lamp housing, and an exhaust port is arranged on the side wall of the lamp housing at the lower part of the lamp board.

[0008] The cooling fan is installed inside the air intake duct and is used to introduce external air into the lamp housing through the air intake duct.

[0009] The exhaust duct is fixedly arranged on the inner wall of the lamp housing and communicates with the exhaust port.

[0010] The columnar sealing component is arranged inside the exhaust duct and is used to seal the exhaust duct. When outside air is introduced into the lamp housing, the columnar sealing component rotates along the exhaust duct to release the sealing state of the exhaust duct.

[0011] As a further improvement of the present invention: the columnar sealing assembly comprises a sealing column,

[0012] A rectangular air duct penetrating the sealing cylinder is provided on the sealing cylinder in the radial direction. The end of the sealing cylinder is rotatably connected to the inner wall of the exhaust duct through a support rotating shaft. An arc-shaped groove is provided on the outer wall of the sealing cylinder facing the intake end of the exhaust duct, and a plurality of blades are fixedly arranged in the arc-shaped groove.

[0013] As a further improvement of the present invention: arc-shaped convex shells are provided at both the top and bottom of the exhaust duct, and the sealing cylinder is arranged between the two arc-shaped convex shells.

[0014] As a further improvement of the present invention: a limiting piece is fixedly arranged on the side wall of the sealing cylinder facing the exhaust end of the exhaust duct.

[0015] As a further improvement of the present invention: a reset assembly is further provided inside the rectangular air duct. After the heat dissipation inside the lamp housing is completed and the fan stops working, the reset assembly drives the sealing cylinder to rotate in the reverse direction to re-seal the inner cavity of the exhaust duct.

[0016] As a further improvement of the present invention: the reset assembly includes a positioning block, an elastic member, and a rectangular centering frame.

[0017] The rectangular centering frame is slidably arranged inside the rectangular air duct. The positioning block is fixedly installed on the inner wall of the rectangular air duct. The positioning block is located on the side of the rectangular centering frame facing the air outlet end of the rectangular air duct. One end of the elastic member is connected to the positioning block, and the other end is connected to the rectangular centering frame to provide elastic support for the rectangular centering frame.

[0018] As a further improvement of the present invention: the elastic member is a spring or a metal elastic sheet.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] In the embodiment of the present invention, when heat dissipation is not required inside the lamp housing, the columnar sealing assembly is located inside the exhaust duct and seals the exhaust duct, thereby preventing external rainwater from entering the lamp housing through the exhaust port and the exhaust duct, avoiding moisture damage to the lamp board. As the lamp beads on one side of the lamp board continue to illuminate, the temperature of the lamp board gradually rises. When heat dissipation of the lamp board is required, the heat dissipation fan located in the intake duct starts. The heat dissipation fan introduces external air from the intake duct into the lamp housing. After the external air enters the lamp housing, it acts on the bottom of the lamp board, and then enters the exhaust duct and drives the columnar sealing assembly to rotate. When the columnar sealing assembly rotates, the sealing state of the exhaust duct is released. Subsequently, the external air passes through the exhaust duct and is discharged from the exhaust port to the outside of the lamp housing, thereby taking away the heat of the lamp board and realizing heat dissipation of the lamp board. Compared with the prior art, it can realize efficient heat dissipation of the lamp board inside the lamp housing, and has the advantages of good heat dissipation effect and strong protection. Description of the Drawings

[0021] Figure 1 It is a schematic diagram of a heat dissipation structure for a light source module Figure 1 ;

[0022] Figure 2 It is a schematic diagram of a heat dissipation structure for a light source module Figure 2 ;

[0023] Figure 3 It is a schematic diagram of the interior of an exhaust duct in a heat dissipation structure for a light source module Figure 1 ;

[0024] Figure 4 It is a schematic diagram of the interior of an exhaust duct in a heat dissipation structure for a light source module Figure 2 ;

[0025] Figure 5 It is a schematic diagram of the interior of a columnar sealing assembly in a heat dissipation structure for a light source module;

[0026] In the figure: 10 - lamp housing, 101 - exhaust port, 102 - intake duct, 20 - exhaust duct, 201 - arc-shaped convex housing, 30 - lamp board, 40 - columnar sealing assembly, 401 - sealing cylinder, 402 - support rotating shaft, 403 - blade, 404 - limiting piece, 405 - rectangular air duct, 50 - reset assembly, 501 - positioning block, 502 - elastic member, 503 - rectangular centering frame. Detailed Description of the Embodiment

[0027] The technical solutions of the present invention will be further described in detail below in conjunction with the specific embodiments.

[0028] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0029] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection", "linkage", and "setting" should be understood in a broad sense. For example, it can be fixedly connected and set, or detachably connected and set, or integrally connected and set. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] Please refer to Figure 1 、 Figure 2 and Figure 3 , this embodiment provides a heat dissipation structure for a light source module, including a lamp housing 10, an exhaust duct 20, a lamp board 30, a columnar sealing assembly 40, and a heat dissipation fan (not shown in the figure). The lamp board 30 is fixedly installed inside the lamp housing 10. An intake duct 102 is provided at the bottom of the lamp housing 10. An exhaust port 101 is formed in the side wall of the lamp housing 10 at a position below the lamp board 30. The heat dissipation fan is installed inside the intake duct 102 and is used to introduce external air into the lamp housing 10 through the intake duct 102. The exhaust duct 20 is fixedly arranged on the inner wall of the lamp housing 10 and communicates with the exhaust port 101. The columnar sealing assembly 40 is arranged inside the exhaust duct 20 and is used to seal the exhaust duct 20. When external air is introduced into the lamp housing 10, the columnar sealing assembly 40 rotates along the inside of the exhaust duct 20 to release the sealed state of the exhaust duct 20.

[0032] When heat dissipation is not required inside the lamp housing 10, the columnar sealing assembly 40 is located inside the exhaust duct 20 and seals the exhaust duct 20, thereby preventing external rainwater from entering the lamp housing 10 through the exhaust port 101 and the exhaust duct 20 and avoiding moisture damage to the lamp board 30. As the lamp beads on one side of the lamp board 30 continue to illuminate, the temperature of the lamp board 30 gradually rises. When heat dissipation of the lamp board 30 is required, the heat dissipation fan located in the intake duct 101 starts. The heat dissipation fan introduces external air into the lamp housing 10 from the intake duct 101. After the external air enters the lamp housing 10, it acts on the bottom of the lamp board 30, then enters the exhaust duct 20 and drives the columnar sealing assembly 40 to rotate. When the columnar sealing assembly 40 rotates, the sealed state of the exhaust duct 20 is released. Subsequently, the external air passes through the exhaust duct 20 and is discharged from the exhaust port 101 to the outside of the lamp housing 10, thereby taking away the heat of the lamp board 30 and realizing heat dissipation of the lamp board 30.

[0033] Please refer to Figure 3 and Figure 5, in one embodiment, the columnar sealing assembly 40 includes a sealing column body 401, a rectangular air duct 405 penetrating the sealing column body 401 in the radial direction is provided on the sealing column body 401, and the end of the sealing column body 401 is rotationally connected to the inner wall of the exhaust duct 20 through a support rotating shaft 402. An arc-shaped groove is provided on the outer wall of the sealing column body 401 facing the intake end of the exhaust duct 20, and a plurality of blades 403 are fixedly arranged in the arc-shaped groove.

[0034] When heat dissipation is not required inside the lamp housing 10, the sealing column body 401 is stationary inside the exhaust duct 20. At this time, the rectangular air duct 405 is vertically distributed, and both ends of the rectangular air duct 405 are located at the upper and lower inner walls of the exhaust duct 20 respectively. A plurality of blades 403 face the intake end direction of the exhaust duct 20, and the column body of the sealing column body 401 itself is used to seal the exhaust duct 20, thereby preventing external rainwater from entering the lamp housing 10 from the exhaust duct 20; when the lamp board 30 inside the lamp housing 10 needs to dissipate heat, the fan is started to introduce external air from the intake duct 102 into the lamp housing 10. After the external air acts on the lamp board 30, it enters the exhaust duct 20 from the intake end of the exhaust duct 20. After the external air enters the exhaust duct 20, it acts on a plurality of blades 403, thereby driving the sealing column body 401 to rotate. When the sealing column body 401 rotates, the rectangular air duct 405 rotates from the vertical state to the horizontal state, so that the intake end and the outlet end of the exhaust duct 20 are communicated with each other. The external air then passes through the rectangular air duct 405 and is discharged to the outside of the lamp housing 10 from the outlet end of the exhaust duct 20 and the exhaust port 101, thereby taking away the heat of the lamp board 30 and realizing the heat dissipation of the lamp board 30.

[0035] Please refer to Figure 3 , in one embodiment, arc-shaped convex shells 201 are provided at both the top and bottom of the exhaust duct 20, and the sealing column body 401 is arranged between the two arc-shaped convex shells 201.

[0036] Through the arrangement of the two arc-shaped convex shells 201, when the sealing column body 401 is stationary inside the exhaust duct 20, both ends of the rectangular air duct 405 are located inside the two arc-shaped convex shells 201 respectively and are blocked by the arc-shaped convex shells 201, thereby improving the blocking effect of the sealing column body 401 on external rainwater.

[0037] Please refer to Figure 4 , in one embodiment, a limiting piece 404 is fixedly arranged on the side wall of the sealing column body 401 facing the exhaust end of the exhaust duct 20.

[0038] When external air enters the interior of the exhaust duct 20 and drives the sealing cylinder 401 to rotate, the sealing cylinder 401 can drive the limiting piece 404 to rotate synchronously. When the rectangular air duct 405 rotates to the horizontal position, the limiting piece 404 acts on the inner wall of the exhaust duct 20, thereby limiting the sealing cylinder 401, so that the rectangular air duct 405 can be maintained in the horizontal position, and thus the external air carrying the heat of the lamp board 30 can smoothly pass through the rectangular air duct 405 and then be discharged from the exhaust port 101 to the outside of the lamp housing 10.

[0039] Please refer to Figure 5 , in one embodiment, a reset assembly 50 is further disposed inside the rectangular air duct 405. When the heat dissipation inside the lamp housing 10 is completed and the fan stops working, the reset assembly 50 drives the sealing cylinder 401 to rotate in the reverse direction to re-seal the inner cavity of the exhaust duct 20.

[0040] Please continue to refer to Figure 5 , in one embodiment, the reset assembly 50 includes a positioning block 501, an elastic member 502, and a rectangular centering frame 503. The rectangular centering frame 503 is slidably disposed inside the rectangular air duct 405. The positioning block 501 is fixedly installed on the inner wall of the rectangular air duct 405. The positioning block 501 is located on one side of the rectangular centering frame 503 facing the air outlet end of the rectangular air duct 405. One end of the elastic member 502 is connected to the positioning block 501, and the other end is connected to the rectangular centering frame 503 for providing elastic support for the rectangular centering frame 503.

[0041] After the rectangular air duct 405 rotates to the horizontal position, the external air carrying the heat of the lamp board 30 passes through the interior of the rectangular air duct 405. At this time, the external air acts on the rectangular centering frame 503 and drives the rectangular centering frame 503 to move in the direction of the positioning block 501, and the elastic member 502 is compressed by the force. After the rectangular centering frame 503 moves a certain distance, the force of the external air acting on the rectangular centering frame 503 and the thrust of the elastic member 502 on the rectangular centering frame 503 reach an equilibrium state, and the rectangular centering frame 503 remains stationary. When the heat dissipation inside the lamp housing 10 is completed and the fan stops working, since no external air passes through the interior of the rectangular air duct 405 anymore, the equilibrium state of the rectangular centering frame 503 is broken. The elastic member 502 pushes the rectangular centering frame 503 to move reversely along the interior of the rectangular air duct 405. When the rectangular centering frame 503 moves reversely, the center of the sealing cylinder 401 is offset, thereby driving the sealing cylinder 401 to rotate in the reverse direction, and the rectangular air duct 405 rotates reversely synchronously until the rectangular air duct 405 rotates back to the vertical state, and the column body of the sealing cylinder 401 re-seals the exhaust duct 20.

[0042] In one embodiment, the elastic member 502 may be a spring or a metal spring, which is not limited here.

[0043] In one embodiment, a one-way valve (not shown in the figure) is also provided in the air intake duct 101. When the fan is working to introduce external air into the interior of the lamp housing 10 from the air intake duct 101, the one-way valve opens. When the heat dissipated inside the lamp housing 10 is completed, the fan stops working and the one-way valve closes, thereby preventing external rainwater from entering the interior of the lamp housing 10 from the air intake duct 101, thereby preventing the lamp board 30 from being damaged by moisture.

[0044] In the embodiment of the present invention, when heat dissipation is not required inside the lamp housing 10, the columnar sealing assembly 40 is located inside the exhaust duct 20 and seals the exhaust duct 20, thereby preventing rainwater from the outside from entering the lamp housing 10 from the exhaust port 101 and the exhaust duct 20, and preventing the lamp board 30 from being damaged by moisture. As the lamp beads on one side of the lamp board 30 continue to illuminate, the temperature of the lamp board 30 gradually increases. When heat dissipation of the lamp board 30 is required, the heat dissipation fan located in the air intake duct 101 is started, and the heat dissipation fan introduces the outside air from the air intake duct 101 into the lamp housing 10. Inside, the outside air enters the lamp housing 10 and acts on the bottom of the lamp board 30, and then enters the exhaust duct 20 and drives the columnar sealing assembly 40 to rotate. When the columnar sealing assembly 40 rotates, the sealing state of the exhaust duct 20 is released, and then the outside air passes through the exhaust duct 20 and is discharged from the exhaust port 101 to the outside of the lamp housing 10, thereby taking away the heat of the lamp board 30, thereby achieving heat dissipation of the lamp board 30. Compared with the prior art, it can achieve efficient heat dissipation of the lamp board 30 inside the lamp housing 10, and has the advantages of good heat dissipation effect and strong protection.

[0045] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-limiting from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any reference numerals in the claims should not be regarded as limiting the claims involved.

[0046] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A heat dissipation structure for a light source module, characterized in that, It includes a lamp housing, an exhaust duct, a lamp panel, a columnar sealing component and a cooling fan. The lamp board is fixedly installed inside the lamp housing, an air intake duct is arranged at the bottom of the lamp housing, and an exhaust port is arranged on the side wall of the lamp housing at the lower part of the lamp board. The cooling fan is installed inside the air intake duct and is used to introduce external air into the lamp housing through the air intake duct. The exhaust duct is fixedly arranged on the inner wall of the lamp housing and communicates with the exhaust port. The columnar sealing component is arranged inside the exhaust duct and is used to seal the exhaust duct. When the outside air is introduced into the lamp housing, the columnar sealing component rotates along the exhaust duct to release the sealing state of the exhaust duct. The columnar sealing assembly comprises a sealing column, The sealing cylinder is provided with a rectangular air passage penetrating the sealing cylinder in the radial direction, the end of the sealing cylinder is rotatably connected to the inner wall of the exhaust pipe through a supporting shaft, an arc groove is provided on the outer wall of the sealing cylinder facing the air inlet end of the exhaust pipe, and a plurality of blades are fixedly arranged in the arc groove. A reset component is also provided inside the rectangular air duct. When the heat inside the lamp housing is completely dissipated, the fan stops working, and the reset component drives the sealing column to rotate in the opposite direction to reseal the inner cavity of the exhaust duct. The reset assembly includes a positioning block, an elastic member and a rectangular centering frame. The rectangular centering frame is slidably arranged inside the rectangular airway, the positioning block is fixedly installed on the inner wall of the rectangular airway, the positioning block is located on the side of the rectangular centering frame facing the air outlet end of the rectangular airway, one end of the elastic member is connected to the positioning block, and the other end is connected to the rectangular centering frame, which is used to provide elastic support for the rectangular centering frame.

2. The heat dissipation structure for a light source module according to claim 1, characterized in that, The top and the bottom of the exhaust pipe are both provided with arc-shaped convex shells, and the sealing column is arranged between two groups of the arc-shaped convex shells.

3. The heat dissipation structure for a light source module according to claim 1, wherein, A limiting piece is fixedly arranged on the side wall of the sealing column facing the exhaust end of the exhaust pipe.

4. A heat dissipation structure for a light source module according to claim 1, characterized in that, The elastic member is a spring or a metal spring.

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