Heat dissipation structure of light modulator

Abstract

The utility model discloses a heat dissipation structure of a light modulator. The heat dissipation structure comprises an insulating shell, a light modulation controller, a metal heat dissipation seat and an insulating heat conduction piece, the dimming controller is installed in the insulating shell, the insulating shell is provided with a receding opening corresponding to a main heating component of the dimming controller, and the main heating component of the dimming controller directly faces the receding opening. The metal radiating seat is sleeved on the insulating shell and is connected with the insulating shell, the metal radiating seat is in heat-conducting fit with a main heating component of the dimming controller through an insulating heat-conducting piece, and the insulating heat-conducting piece is clamped between the main heating component of the dimming controller and the metal radiating seat; and the two sides of the insulating heat conduction piece are respectively contacted with a main heating part of the dimming controller and the metal radiating seat. According to the utility model, the heat dissipation performance of the dimming controller can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the field of dimmers, in particular to a heat dissipation structure of a dimmer. Background Art

[0002] A dimmer is an electrical device used to change the brightness and / or color temperature of a lighting device. Existing dimmers generally include a housing and a dimming controller installed in the housing. The housings of many existing dimmers are made of plastic, which causes the heat of the dimming controller to be unable to quickly dissipate out of the housing; to solve this problem, existing dimmers generally have heat dissipation holes in the housing, but this measure still cannot quickly dissipate the heat generated by the dimming controller, resulting in poor heat dissipation of the dimming controller.

[0003] In view of the existence of the above problems, it is necessary to study a heat dissipation structure of a dimmer, which can effectively improve the heat dissipation performance of the dimming controller. Utility Model Content

[0004] The utility model aims to provide a heat dissipation structure of a dimmer, which can effectively improve the heat dissipation performance of the dimmer controller.

[0005] In order to achieve the above purpose, the solution of the utility model is:

[0006] A heat dissipation structure of a dimmer, comprising an insulating shell, a dimming controller, a metal heat sink, and an insulating heat conductive member; the dimming controller is installed in the insulating shell, the insulating shell is provided with a clearance opening corresponding to the main heat-generating component of the dimming controller, and the main heat-generating component of the dimming controller is directly opposite to the clearance opening; the metal heat sink is sleeved on the insulating shell and connected to the insulating shell, the metal heat sink and the main heat-generating component of the dimming controller are heat-conductively matched through the insulating heat conductive member, the insulating heat conductive member is clamped between the main heat-generating component of the dimming controller and the metal heat sink, and the two sides of the insulating heat conductive member are respectively in contact with the main heat-generating component of the dimming controller and the metal heat sink.

[0007] The heat dissipation structure of the dimmer also includes an insulating pressing piece, which is matched in the insulating shell and presses the main heat-generating components of the dimming controller.

[0008] The dimming controller has a connected main dimming circuit board and a secondary dimming circuit board, the main dimming circuit board is located on the secondary dimming circuit board, and the main heat-generating components of the dimming controller are connected to the secondary dimming circuit board; the insulating pressing piece covers the main heat-generating components of the dimming controller and separates the main heat-generating components of the dimming controller from the main dimming circuit board and the secondary dimming circuit board.

[0009] The insulating pressing piece, the main heat-generating component of the dimming controller, the insulating heat-conducting piece and the metal heat sink are fixed by screws.

[0010] The main heat-generating component of the dimming controller is provided with a relief hole corresponding to the screw for escaping the screw, and the relief hole is in clearance with the screw.

[0011] The insulating pressing piece is made of plastic.

[0012] The main heat-generating components of the dimming controller include at least two switch tubes, and each switch tube is close to the insulating heat-conducting member.

[0013] The insulating shell comprises an upper cover and a lower cover connected to each other, and the upper cover and the lower cover are made of plastic material.

[0014] The material of the metal heat sink is aluminum.

[0015] The insulating heat-conducting member is made of ceramic.

[0016] After adopting the above scheme, the main heat-generating component of the dimming controller of the utility model is thermally coordinated with the metal heat sink through the insulating heat conductive part. The insulating heat conductive part is clamped between the main heat-generating component of the dimming controller and the metal heat sink, and the two sides of the insulating heat conductive part are respectively in contact with the main heat-generating component of the dimming controller and the metal heat sink, so that the heat generated by the main heat-generating component of the dimming controller can be conducted to the metal heat sink through the insulating heat conductive part and dissipated by the metal heat sink, thereby effectively improving the heat dissipation performance of the dimming controller; and the insulating heat conductive part can insulate and isolate the main heat-generating component of the dimming controller from the metal heat sink, thereby avoiding the main heat-generating component of the dimming controller from leaking electricity to the metal heat sink and causing safety hazards, thereby ensuring safety of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model.

[0018] Figure 2 It is a structural exploded view of the utility model.

[0019] Figure 3 The utility model is a cross-sectional view Figure 1 .

[0020] Figure 4 The utility model is a cross-sectional view Figure 2 .

[0021] Description of labels:

[0022] Insulating housing 1, upper cover 101, lower cover 102, opening 11, through hole 12, connecting shaft 121, wiring hole 13, operating hole 14,

[0023] Dimming controller 2, main dimming circuit board 21, secondary dimming circuit board 22, dimming knob 23, connecting terminal 24, switch tube 25, avoidance hole 251,

[0024] Metal heat sink 3, avoidance opening 31, fixing plate 32, fixing hole 321,

[0025] Insulating heat conducting member 4,

[0026] Insulation compression piece 5. DETAILED DESCRIPTION

[0027] In order to further explain the technical solution of the present utility model, the present utility model is described in detail below through specific embodiments.

[0028] like Figures 1 to 4 As shown, the utility model discloses a heat dissipation structure of a dimmer, which includes an insulating shell 1, a dimming controller 2, a metal heat sink 3, and an insulating heat conductive member 4; wherein the dimming controller 2 is installed in the insulating shell 1, and the insulating shell 1 is provided with a clearance opening 11 corresponding to the main heat-generating component of the dimming controller 2, and the main heat-generating component of the dimming controller 2 is directly opposite to the clearance opening 11; the metal heat sink 3 is sleeved on the insulating shell 1 and connected to the insulating shell 1, and the metal heat sink 3 and the main heat-generating component of the dimming controller 2 are heat-conductingly matched through the insulating heat conductive member 4, and the insulating heat conductive member 4 is sandwiched between the main heat-generating component of the dimming controller 2 and the metal heat sink 3, and the two sides of the insulating heat conductive member 4 are respectively in contact with the main heat-generating component of the dimming controller 2 and the metal heat sink 3.

[0029] In the utility model, the main heat-generating component of the dimming controller 2 of the utility model is thermally coordinated with the metal heat sink 3 through the insulating heat-conducting member 4. The insulating heat-conducting member 4 is sandwiched between the main heat-generating component of the dimming controller 2 and the metal heat sink 3, and the two sides of the insulating heat-conducting member 4 are respectively in contact with the main heat-generating component of the dimming controller 2 and the metal heat sink 3, so that the heat generated by the main heat-generating component of the dimming controller 2 can be conducted to the metal heat sink 3 through the insulating heat-conducting member 4 and dissipated by the metal heat sink 3, thereby effectively improving the heat dissipation performance of the dimming controller 2; and the insulating heat-conducting member 4 can insulate and isolate the main heat-generating component of the dimming controller 2 from the metal heat sink 3, thereby avoiding the main heat-generating component of the dimming controller 2 from leaking electricity to the metal heat sink 3 and causing safety hazards, thereby ensuring safety in use.

[0030] In an embodiment of the utility model, the insulating shell 1 may include an upper cover 101 and a lower cover 102 connected to each other, and the lower cover 102 is provided with the clearance opening 11, and the clearance opening 11 is specifically arranged at the bottom of the insulating shell 1; the materials of the upper cover 101 and the lower cover 102 are both plastic materials, so that the upper cover 101 and the lower cover 102 have good insulation properties.

[0031] In an embodiment of the utility model, the dimming controller 2 has a connected main dimming circuit board 21 and a secondary dimming circuit board 22. The main dimming circuit board 21 is located on the secondary dimming circuit board 22. The main heat-generating components of the dimming controller 2 are connected to the secondary dimming circuit board 22. The main heat-generating components of the dimming controller 2 may include at least two switching tubes 25. The switching tubes 25 may be MOS tubes or triodes. Each switching tube 25 is abutted against the insulating heat conductive part 4 so that the heat generated by each switching tube 25 can be quickly conducted to the insulating heat conductive part 4.

[0032] In an embodiment of the utility model, the dimming controller 2 is also provided with a dimming knob 23, which is installed on the main dimming circuit board 21. The insulating shell 1 is provided with a through hole 12 corresponding to the dimming knob 23. The through hole 12 is matched with a connecting shaft 121 connected to the dimming knob 23. The connecting shaft 121 is used to connect to an external knob cap so that people can control the dimming knob 23 through the knob cap.

[0033] In an embodiment of the utility model, the dimming controller 2 is also provided with a connecting terminal 24, which is installed on the secondary dimming circuit board. The insulating housing 1 is provided with a wiring hole 13 corresponding to the connecting terminal 24 so that the connecting terminal 24 can be connected to an external wire. The insulating housing 1 is also provided with an operating hole 14 corresponding to the connecting terminal 24 so as to operate the connecting terminal 24 with a screwdriver. The wiring hole 13 and the operating hole 14 are respectively arranged on the lower cover 102 and the upper cover 101 of the housing; and the metal heat sink 3 is provided with an avoidance opening 31 corresponding to the connecting terminal 24 to avoid hindering the connecting terminal 24 from connecting to an external wire.

[0034] In an embodiment of the utility model, the material of the metal heat sink 3 can be aluminum, so that the metal heat sink 3 has good thermal conductivity; the metal heat sink 3 can be set with an upward opening, the metal heat sink 3 is placed on the insulating shell 1 from bottom to top, and the metal heat sink 3 can be snap-connected with the insulating shell 1 to make the connection structure between the metal heat sink 3 and the insulating shell 1 simple; a fixing plate 32 is formed on the periphery of the metal heat sink 3, and the fixing plate 32 is provided with a fixing hole 321 so as to fix the metal heat sink 3 at the desired installation position.

[0035] In the embodiment of the utility model, the insulating heat-conducting member 4 is made of ceramic, which has good thermal conductivity and insulation.

[0036] In an embodiment of the utility model, a heat dissipation structure of a dimmer of the utility model further includes an insulating clamp 5, which is fitted in the insulating housing 1. The insulating clamp 5 presses the main heat-generating components of the dimming controller 2 and drives the two sides of the insulating heat-conducting component 4 to be in close contact with the main heat-generating components of the dimming controller 2 and the metal heat sink 3, respectively, to ensure that the heat of the main heat-generating components of the dimming controller 2 can be more transferred to the metal heat sink 3 through the insulating heat-conducting component 4, thereby ensuring the heat dissipation performance. Among them, the insulating clamp 5 is made of plastic material, and the insulating clamp 5, the main heat-generating components of the dimming controller 2, the insulating heat-conducting component 4 and the metal heat sink 3 are locked by screws (not shown), to ensure that the insulating clamp 5, the main heat-generating components of the dimming controller 2, the insulating heat-conducting component 4 and the metal heat sink 3 are firmly installed, and to ensure that the two sides of the insulating heat-conducting component 4 are in close contact with the main heat-generating components of the dimming controller 2 and the metal heat sink 3, respectively. The main heat generating components of the dimming controller 2 are provided with avoidance holes 251 corresponding to the screws, and the avoidance holes 251 are matched with the screw clearance to ensure the insulation between the main heat generating components of the dimming controller 2 and the metal heat sink 3.

[0037] In an embodiment of the utility model, the insulating clamping member 5 covers the main heat-generating components of the dimming controller 2 and separates the main heat-generating components of the dimming controller 2 from the main dimming circuit board 21 and the secondary dimming circuit board 22. Such a configuration is beneficial to improving the EMI performance of the dimmer of the utility model.

[0038] The above embodiments and drawings do not limit the product form and style of the present utility model. Any appropriate changes or modifications made by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present utility model.

Claims

1. A heat dissipation structure of a dimmer, characterized in that: It includes an insulating shell, a dimming controller, a metal heat sink, and an insulating heat conducting member; The dimming controller is installed in an insulating shell, and the insulating shell is provided with a clearance opening corresponding to the main heat-generating component of the dimming controller, and the main heat-generating component of the dimming controller is directly opposite to the clearance opening; The metal heat sink is sleeved on and connected to the insulating shell. The metal heat sink and the main heat-generating component of the dimming controller are thermally matched through an insulating heat-conducting piece. The insulating heat-conducting piece is clamped between the main heat-generating component of the dimming controller and the metal heat sink, and the two sides of the insulating heat-conducting piece are respectively in contact with the main heat-generating component of the dimming controller and the metal heat sink.

2. The heat dissipation structure of a dimmer according to claim 1, characterized in that: It also includes an insulating pressing piece, which is matched in the insulating shell and presses the main heating components of the dimming controller.

3. The heat dissipation structure of a dimmer as claimed in claim 2, characterized in that: The dimming controller has a connected main dimming circuit board and a secondary dimming circuit board, the main dimming circuit board is located on the secondary dimming circuit board, and the main heat-generating components of the dimming controller are connected to the secondary dimming circuit board; the insulating pressing piece covers the main heat-generating components of the dimming controller and separates the main heat-generating components of the dimming controller from the main dimming circuit board and the secondary dimming circuit board.

4. The heat dissipation structure of a dimmer according to claim 2, characterized in that: The insulating pressing piece, the main heat-generating component of the dimming controller, the insulating heat-conducting piece and the metal heat sink are fixed by screws.

5. The heat dissipation structure of a dimmer as claimed in claim 3, characterized in that: The main heat-generating component of the dimming controller is provided with a relief hole corresponding to the screw for escaping the screw, and the relief hole is in clearance with the screw.

6. The heat dissipation structure of a dimmer as claimed in claim 2, characterized in that: The insulating pressing piece is made of plastic.

7. A heat dissipation structure of a dimmer as claimed in claim 1, 2 or 3, characterized in that: The main heat-generating components of the dimming controller include at least two switch tubes, and each switch tube is close to the insulating heat-conducting member.

8. The heat dissipation structure of a dimmer according to claim 1, characterized in that: The insulating shell comprises an upper cover and a lower cover connected to each other, and the upper cover and the lower cover are made of plastic material.

9. The heat dissipation structure of a dimmer according to claim 1, characterized in that: The material of the metal heat sink is aluminum.

10. The heat dissipation structure of a dimmer according to claim 1, characterized in that: The insulating heat-conducting member is made of ceramic.

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