A heat-dissipating headlamp

Abstract

The utility model discloses a heat dissipation type headlight, include: casing, form with heat dissipation channel, light source module and power module, all be located in casing, light source module includes circuit board, circuit board with power module electricity is connected, circuit board with power module respectively located heat dissipation channel's both sides, and circuit board is close to heat dissipation channel's one side all or partial bare in heat dissipation channel. The heat dissipation channel exists between power module and circuit board, and the light source module generates heat and conducts to the circuit board quickly, and the circuit board is exposed in the heat dissipation channel, and the outside air can flow into the heat dissipation channel and carry out heat exchange with the circuit board and then flow out the heat dissipation channel, realize the quick heat dissipation of light source module to improve the lighting effect.

Description

Technical Field

[0001] This utility model relates to the field of headlamp technology, and in particular to a heat dissipation headlamp. Background Technology

[0002] In low-light environments, lighting equipment is needed, and a headlamp is a portable lighting device that is usually worn on the user's head. Headlamps are convenient as they do not require the user to hold them.

[0003] In existing technologies, headlamps generate a lot of heat, causing their temperature to rise. To reduce the operating temperature of headlamps, existing headlamps generally use additional heat dissipation components or direct heat dissipation through the metal body. However, this heat dissipation method also increases the cost and weight of the headlamps, and can also lead to a decrease in lighting performance due to poor heat dissipation.

[0004] Therefore, existing technologies still need to be improved and developed. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a heat dissipation headlamp to address the above-mentioned defects in the prior art, thereby solving the problem that the headlamp's excessive temperature affects the lighting effect.

[0006] The technical solution adopted by this utility model to solve the technical problem is as follows:

[0007] In a first aspect, the present invention provides a heat-dissipating headlamp, comprising:

[0008] The casing has heat dissipation channels;

[0009] Both the light source module and the power supply module are located inside the housing; the light source module includes a circuit board;

[0010] The circuit board and the power module are electrically connected.

[0011] The circuit board and the power module are located on opposite sides of the heat dissipation channel, with the side of the circuit board closest to the heat dissipation channel being fully or partially exposed within the channel.

[0012] In this solution, the heat generated by the light source module is quickly conducted to the circuit board, and the circuit board is exposed in the heat dissipation channel. Outside air can flow into the heat dissipation channel and exchange heat with the circuit board before flowing out of the heat dissipation channel, thus achieving rapid heat dissipation of the light source module.

[0013] In other embodiments of this utility model, the heat dissipation headlamp further includes:

[0014] A sealing structure is located between the circuit board and the inner wall of the housing, or between the circuit board and the inner wall of the housing.

[0015] In this design, the sealing structure can prevent water (water mist, etc.) from the outside or the heat dissipation channel from entering the side of the circuit board away from the heat dissipation channel.

[0016] In other embodiments of this utility model, the side of the circuit board closest to the heat dissipation channel is covered with a thermally conductive insulating layer; or

[0017] The side of the circuit board closest to the heat dissipation channel is covered with a metal layer and an insulating layer.

[0018] In this solution, the thermally conductive insulating layer can conduct heat and insulate, and the heat on the circuit board can be conducted to the thermally conductive insulating layer without leakage; the insulating layer can block current conduction, and the metal layer can conduct heat quickly, thereby achieving thermal conductivity and insulation.

[0019] In other embodiments of this utility model, the light source module includes:

[0020] The light source is located on the side of the circuit board opposite to the heat dissipation channel.

[0021] In this scheme, the heat generated by the light source is conducted and evenly distributed on the circuit board, and dissipated through heat dissipation channels.

[0022] In other embodiments of this utility model, the light source module further includes:

[0023] An optical component is located in the light-emitting direction of the light source.

[0024] In this scheme, the optical components output the light emitted by the light source.

[0025] In other embodiments of this utility model, a first connector is provided on the circuit board, and a second connector is provided on the power module, with the first connector and the second connector connected together.

[0026] In this scheme, the power supply module and the light source module are electrically connected by the mutual connection of the first connector and the second connector.

[0027] In other embodiments of this utility model, a limiting plate is formed inside the housing, and the limiting plate surrounds the light source.

[0028] In this solution, the light source is protected by a limiting plate.

[0029] In other embodiments of this utility model, a button is provided on the upper surface of the housing, and the button is electrically connected to the light source module; and / or

[0030] The heat dissipation channel extends through the upper and lower surfaces of the housing.

[0031] In this solution, the light source module is controlled via a button, and the air in the heat dissipation channel flows rapidly to achieve rapid heat dissipation of the light source module.

[0032] In other embodiments of this utility model, the heat dissipation headlamp further includes:

[0033] The connector is rotatably connected to the housing;

[0034] The connector is configured to fit the curved shape of the forehead.

[0035] In this design, a heat-dissipating headlamp is worn using a connector.

[0036] In other embodiments of this utility model, an arc-shaped component is provided on the housing, and an elastic locking protrusion is provided on the connector, the elastic locking protrusion abutting against the arc-shaped component;

[0037] The housing is provided with a mounting base, and a shaft hole is formed on the mounting base;

[0038] The connector is provided with a rotating shaft, which is inserted into the shaft hole;

[0039] The central axis of the arc-shaped component is collinear with the central axis of the rotating shaft;

[0040] The connector has connecting parts at its left and right ends, and the connecting parts are configured as headbands.

[0041] In this design, the angle between the connector and the housing is adjusted and fixed by the compression of the curved component by the elastic locking tab, thereby adjusting the illumination direction of the light source module. This achieves a rotatable connection between the housing and the connector. The connector is then secured to the user's head via a headband.

[0042] Beneficial effects: There is a heat dissipation channel between the power module and the circuit board. The heat generated by the light source module is quickly conducted to the circuit board, and the circuit board is exposed in the heat dissipation channel. Outside air can flow into the heat dissipation channel and exchange heat with the circuit board before flowing out of the heat dissipation channel, thereby achieving rapid heat dissipation of the light source module and improving the lighting effect. Attached Figure Description

[0043] Figure 1 This is a functional principle block diagram of the heat dissipation headlamp in this embodiment of the utility model.

[0044] Figure 2 This is a first perspective view of the heat dissipation headlamp in an embodiment of this utility model.

[0045] Figure 3 This is a top view of the heat dissipation headlamp in an embodiment of this utility model.

[0046] Figure 4 yes Figure 3 A sectional view along line A.

[0047] Figure 5 This is a second perspective view of the heat dissipation headlamp in an embodiment of this utility model.

[0048] Figure 6 This is a schematic diagram of the first structure of the shell in an embodiment of this utility model.

[0049] Figure 7 This is a schematic diagram of the second structure of the shell in an embodiment of this utility model.

[0050] Figure 8 This is a schematic diagram of the structure of the light source module in an embodiment of this utility model.

[0051] Figure 9 This is a schematic diagram of the circuit board and light source in an embodiment of this utility model.

[0052] Figure 10 This is a schematic diagram of the structure of the optical component in an embodiment of this utility model.

[0053] Figure 11 This is a schematic diagram of the power supply module in an embodiment of this utility model.

[0054] Figure 12 This is a schematic diagram of the connector in an embodiment of this utility model.

[0055] Explanation of reference numerals in the attached figures:

[0056] 10. Housing; 11. Heat dissipation channel; 111. Through hole; 12. Arc-shaped component; 13. Mounting base; 131. Shaft hole; 132. Reinforcing rib; 14. First mounting hole; 15. Second mounting hole; 16. Limiting plate; 101. Upper surface; 102. Lower surface; 103. Front side; 104. Rear side;

[0057] 20. Light source module; 21. Circuit board; 22. Light source; 23. Optical components; 231. Substrate; 232. Conical truncated pyramid; 233. Slot; 234. Support column;

[0058] 30. Power supply module; 31. Second connector;

[0059] 40. Button;

[0060] 50. Connector; 51. Elastic locking protrusion; 52. Rotating shaft; 53. Connecting part; 54. Hole structure;

[0061] 60. Sealed structure. Detailed Implementation

[0062] To make the objectives, technical solutions, and advantages of this utility model clearer and more explicit, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0063] Please also refer to Figures 1-12 This utility model provides some embodiments of a heat-dissipating headlamp. Headlamps are typically worn on the forehead of the user's head. During illumination, headlamps generate a significant amount of heat. If this heat accumulates, the headlamp's temperature rises, potentially reducing its output power and consequently decreasing its illumination. Furthermore, using a headlamp in high-temperature environments further increases its temperature and reduces its illumination. Excessive headlamp temperature also poses safety hazards. Therefore, it is necessary to reduce the headlamp's temperature. Existing technologies utilize structures such as fans and heat sinks for heat dissipation. This application employs a heat dissipation channel, eliminating the need for fans and heat sinks. This reduces the headlamp's size and cost while ensuring effective heat dissipation.

[0064] like Figure 1 As shown, the heat-dissipating headlamp of this invention includes a light source module 20, which emits light for illumination. The light source module 20 includes a circuit board 21, which conducts heat to dissipate the heat generated by the light source module 20. A thermally conductive insulating layer is covered on the side of the circuit board 21 near the heat dissipation channel 11. This thermally conductive insulating layer is made of a thermally conductive insulating material and has both thermal conductivity and insulation properties, such as thermally conductive insulating ceramic. In another embodiment, a metal layer and an insulating layer are stacked and covered on the side of the circuit board 21 near the heat dissipation channel 11. The metal layer can be an aluminum layer, an iron layer, a copper layer, etc. The metal layer has thermal conductivity. An insulating layer is located between the metal layer and the circuit board 21 and has insulation properties. The light source module 20 also includes a light source 22, which converts electrical energy into light energy to emit light. The light source 22 is located on the side of the circuit board 21 opposite to the heat dissipation channel 11. The heat generated by the light source 22 is quickly conducted to the circuit board 21, and then to the circuit board 21 itself. The large surface area of ​​the circuit board 21 facilitates rapid heat dissipation, thereby improving the lighting effect. The light source 22 can be an LED.

[0065] like Figure 1 As shown, the heat dissipation headlamp of this utility model includes a power module 30, which provides electrical energy. The power module 30 and the light source module 20 are electrically connected, so the power module 30 specifically provides electrical energy to the light source module 20. Figure 1 (The solid arrow in the middle indicates the direction of power transmission). The power module 30 can use a rechargeable power source, such as a lithium battery. A heat dissipation channel 11 exists between the power module 30 and the circuit board 21. Figure 1The hollow arrow indicates the airflow direction in the heat dissipation channel 11. (See heat dissipation channel 11 for details.) Figure 4 The circuit board 21 is wholly or partially exposed in the heat dissipation channel 11 on the side closest to it. The exposed area of ​​the circuit board 21 accounts for more than 80% of the total area of ​​the side of the circuit board 21 facing the heat dissipation channel 11. Since a large portion of the circuit board 21 is exposed in the heat dissipation channel 11, outside air can flow into the heat dissipation channel 11, exchange heat with the circuit board 21, and then flow out of the heat dissipation channel 11, thus achieving rapid heat dissipation for the light source module 20. The heat dissipation channel 11 fully covers the side of the power module 30 facing the heat dissipation channel 11, and the side of the power module 30 facing the heat dissipation channel 11 is also fully exposed in the heat dissipation channel 11.

[0066] like Figure 1 As shown, the heat-dissipating headlamp of this invention includes a button 40, which is connected to the circuit board 21. The button 40 can be a power button, used to turn the headlamp on and off. The button 40 can also be a function button, used to adjust the headlamp's power or mode. The circuit board 21 is operated via the button 40, thereby controlling the headlamp.

[0067] like Figure 2 As shown, the heat-dissipating headlamp of this utility model includes a housing 10. The housing 10 is rectangular and has six surfaces, namely an upper surface 101, a lower surface 102, a front side surface 103, a rear side surface 104, a left side surface, and a right side surface (see [reference]). Figure 4 With the light emission direction of the light source module 20 as the forward direction, the light source module 20 emits light from the front side 103 of the housing 10. The housing 10 does not block the side of the circuit board 21 facing the heat dissipation channel 11 and the side of the power module 30 facing the heat dissipation channel 11, so that the side of the circuit board 21 facing the heat dissipation channel 11 and the side of the power module 30 facing the heat dissipation channel 11 can fully contact the air in the heat dissipation channel 11, increasing the contact area, which in turn increases the heat dissipation area and improves the heat dissipation efficiency.

[0068] like Figure 2 As shown, the heat dissipation headlamp of this utility model includes a connector 50, which is located on the rear side 104 of the housing 10. The connector 50 can be worn on the user's head via a headband, thus fixing the connector 50 to the user's forehead. The connector 50 is rotatably connected to the housing 10. The housing 10 can rotate relative to the connector 50, adjusting the orientation of the housing 10 and thus changing the light emission direction of the light source module 20.

[0069] like Figure 3As shown, the housing 10 forms a heat dissipation channel 11, which extends through the housing 10, allowing air to pass through quickly for rapid heat dissipation. A gap is formed between the connector 50 and the housing 10, which facilitates heat dissipation from the power module 30 and reduces heat transfer from the headlamp to the user's forehead. The connector 50 is curved (see...). Figure 5 The curved surface of connector 50 is adapted to the curved surface of the user's forehead. When connector 50 contacts the forehead, it will not create too much pressure, will not damage the forehead, and will help to fix connector 50 to the forehead.

[0070] like Figure 4 As shown, the light source module 20 and the power supply module 30 are located on both sides of the heat dissipation channel 11, with the light source module 20 near the front side 103 of the housing 10 and the power supply module 30 near the rear side 104 of the housing 10. The heat dissipation channel 11 extends through the upper surface 101 and the lower surface 102 of the housing 10, forming a channel with open ends, which facilitates downward or upward airflow. For example, air flows from the upper end to the lower end of the heat dissipation channel 11, or from the lower end to the upper end of the heat dissipation channel 11.

[0071] like Figure 4 As shown, circuit board 21 has a high thermal conductivity, resulting in excellent heat dissipation. Heat from light source 22 is conducted and dispersed to circuit board 21, and then dissipated through heat dissipation channel 11. Circuit board 21 is flat, allowing air to quickly pass through its surface, resulting in high heat dissipation efficiency. Light source 22 is mounted on circuit board 21, which separates it from heat dissipation channel 11, ensuring that airflow through the channel does not affect the light emission of light source 22. Optical component 23 is configured to converge the light emitted by light source 22, allowing it to travel further. Button 40 is located on the upper surface 101 of housing 10 for easy pressing with the user's thumb or forefinger. An arc-shaped component 12 is provided on the housing 10, specifically on the lower surface 102 of the housing 10. The outer side of the arc-shaped component 12 is arc-shaped. An elastic locking protrusion 51 is provided on the connector 50. The elastic locking protrusion 51 maintains its deformed state and abuts against the arc surface of the arc-shaped component 12, exerting pressure on the arc-shaped component 12 and hindering the rotation of the connector 50 and the housing 10, so that the connector 50 and the housing 10 maintain a certain angle.

[0072] like Figure 4 As shown, the heat-dissipating headlamp also includes a sealing structure 60. The sealing structure 60 is configured to fill and seal the gap between the housing 10 and the circuit board 21. The sealing structure 60 prevents water or moisture in the heat dissipation channel 11 from entering through the gap and contacting the circuit board 21 and the light source 22. The sealing structure 60 can be a sealing ring or sealant, such as a silicone waterproof ring.

[0073] like Figure 5 As shown, button 40 is located on the upper surface 101 of housing 10. There can be two buttons 40, namely a power button and an adjustment function button. Connector 50 is a curved rectangle.

[0074] like Figure 6 As shown, an opening is formed on the rear side 104 of the housing 10 (see Figure 104). Figure 4 The housing 10 allows the light source module 20 and the power supply module 30 to pass through, enabling their installation and removal. The left and right sides of the housing 10 are closed (see [reference]). Figure 7 Both the upper surface 101 and the lower surface 102 of the housing 10 have through holes 111. The through holes 111 are relatively large and expose the power module 30 (see...). Figure 3 and Figure 5 This facilitates heat dissipation of the power module 30. A second mounting hole 15 is also formed on the upper surface 101 of the housing 10 for the button 40 to pass through, enabling its installation. A limiting plate 16 is formed inside the housing 10, surrounding the light source 22. The light source 22 is enclosed by the circuit board 21, the limiting plate 16, and the optical assembly 23, thus protecting it (see...). Figure 4 A mounting base 13 is provided on the housing 10, specifically on the lower surface 102 of the housing 10, and a shaft hole 131 is formed on the mounting base 13. A rotating shaft 52 is provided on the connector 50 (see...). Figure 12 The rotating shaft 52 is inserted into the shaft hole 131, and the rotating shaft 52 can rotate within the shaft hole 131.

[0075] like Figure 7 As shown, the front side 103 of the housing 10 forms a first mounting hole 14 for mounting the optical component 23 (see Figure 103). Figure 4 The first mounting hole 14 is a stepped hole, which limits the optical component 23 and prevents the optical component 23 from moving forward.

[0076] like Figure 8 As shown, the optical component 23 is made of a light-transmitting material and is located in the light-emitting direction of the light source 22. The optical component 23 includes a substrate 231. The substrate 231 is located within the first mounting hole 14 (see...). Figure 4 and Figure 7The optical component 23 includes a conical stage 232. The conical stage 232 is a cone shape with its tip removed. The number of conical stages 232 corresponds to the number of light sources 22, forming a one-to-one arrangement. The light emitted by the light source 22 is divergent, and the conical stage 232 acts as a focusing element, converging the light emitted by the light source 22, resulting in more focused light that can propagate over long distances. The conical stage 232 and the substrate 231 can be integrally formed. The optical component 23 also includes a support pillar 234. The support pillar 234 is disposed on the substrate 231. When the substrate 231 deforms, the support pillar 234 can support it on the circuit board 21, reducing damage to the circuit board 21 and the light source 22. The conical stage 232 can also be replaced by a convex lens or a Fresnel lens.

[0077] like Figure 9 As shown, there are multiple light sources 22, which are arranged in an array on the circuit board 21.

[0078] like Figure 10 As shown, there are multiple conical stages 232, which are arranged in an array on the substrate 231. A recessed groove 233 is provided at the top of each conical stage 232, forming a wedge-shaped structure at the top, which helps to retain light within the conical stage 232 and allow it to exit from the bottom. Each conical stage 232 has a focusing end facing the light source 22. The focusing end can be a convex curved surface structure, such as the curved surface structure of a convex lens or a Fresnel lens. The focusing end can be located at the bottom of the recessed groove 233.

[0079] like Figure 11 As shown, a second connector 31 is provided on the power module 30, and a first connector is provided on the circuit board 21. The first connector and the second connector 31 are connected to each other to realize the electrical connection between the power module 30 and the light source module 20.

[0080] like Figure 12 As shown, the connector 50 has two rotating shafts 52, and the housing 10 has two mounting bases 13 (see...). Figure 6 Each mounting base 13 is fitted with a corresponding pivot 52. There are two elastic locking protrusions 51 and two arc-shaped parts 12 (see...). Figure 6The elastic locking protrusion 51 abuts against the outer side of the corresponding arc-shaped component 12. The central axis of the arc-shaped component 12 is collinear with the central axis of the rotating shaft 52. When the rotating shaft 52 rotates within the shaft hole 131, the pressure of the elastic locking protrusion 51 on the arc-shaped component 12 is basically consistent. Both elastic locking protrusions 51 are located between the two rotating shafts 52. The connector 50 is also provided with a connecting part 53. There are two connecting parts 53, located at the left and right ends of the connector 50 respectively. The connecting part 53 can be an elongated hole with a notch. The ring structure of the headband can be inserted through the notch and fitted onto the elongated hole to connect the headband to the connecting part 53. The connector 50 is provided with a hole structure 54, which can be a rectangular hole, a hexagonal hole, etc. This is beneficial for heat dissipation of the forehead and enhances the strength of the connector 50.

[0081] It should be understood that the application of this utility model is not limited to the examples above. Those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A headlamp of the heat dissipating type, characterized in that, include: The casing has heat dissipation channels; Both the light source module and the power supply module are located inside the housing; the light source module includes a circuit board; The circuit board and the power module are electrically connected. The circuit board and the power module are located on opposite sides of the heat dissipation channel, with the side of the circuit board closest to the heat dissipation channel being fully or partially exposed in the heat dissipation channel. The side of the circuit board closest to the heat dissipation channel is covered with a thermally conductive insulating layer; or The circuit board is covered with a metal layer and an insulating layer on the side near the heat dissipation channel, with the insulating layer located between the metal layer and the circuit board.

2. The heat-dissipating headlamp according to claim 1, characterized in that, The heat-dissipating headlamp also includes: A sealing structure is located between the circuit board and the inner wall of the housing, or between the circuit board and the inner wall of the housing.

3. The heat dissipating headlamp of claim 1, wherein The light source module includes: The light source is located on the side of the circuit board opposite to the heat dissipation channel.

4. The heat dissipating headlamp according to claim 3, wherein The light source module also includes: An optical component is located in the light-emitting direction of the light source.

5. The heat-dissipating headlamp according to claim 3, characterized in that, The circuit board is provided with a first connector, and the power module is provided with a second connector, and the first connector and the second connector are connected.

6. The heat dissipating headlamp of claim 3, wherein A limiting plate is formed inside the housing, and the limiting plate surrounds the light source.

7. The heat dissipating headlamp of claim 1, wherein A button is provided on the upper surface of the housing, and the button is electrically connected to the light source module; and / or The heat dissipation channel extends through the upper and lower surfaces of the housing.

8. The heat-dissipating headlamp according to any one of claims 1 to 7, characterized in that, The heat-dissipating headlamp also includes: The connector is rotatably connected to the housing; The connector is configured to fit the curved shape of the forehead.

9. The heat-dissipating headlamp according to claim 8, characterized in that, The housing is provided with an arc-shaped component, and the connector is provided with an elastic locking protrusion, which abuts against the arc-shaped component; The housing is provided with a mounting base, and a shaft hole is formed on the mounting base; The connector is provided with a rotating shaft, which is inserted into the shaft hole; The central axis of the arc-shaped component is collinear with the central axis of the rotating shaft; The connector has connecting parts at its left and right ends, and the connecting parts are configured as headbands.

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