TWM468632U - Searchlight - Google Patents

Description

Searchlight

This creation is about a searchlight, especially a searchlight that uses a gas-liquid phase heat-dissipating cycle for cooling.

Light-Emitting Diode (LED) light source is an emerging light-emitting element. Although it can not replace traditional incandescent lamps on a large scale, it has the advantages of long working life, energy saving and environmental protection. I am optimistic. In addition, the module consisting of multiple light-emitting diodes can generate high-power, high-brightness light sources. When used, color temperature can be selected according to environmental requirements. It can completely replace existing incandescent lamps for indoor and outdoor lighting. It is also expected to be extensive and revolutionary. It replaces the existing light sources such as traditional incandescent lamps, and becomes the main light-emitting part that meets the theme of energy conservation and environmental protection.

However, at present, most of the heat dissipation methods of the light-emitting diodes use heat conduction for heat dissipation, and the effect thereof is not satisfactory, and the heat dissipation fins need to be adjacent to the light-emitting diodes, thereby causing difficulty in space design of the electronic device. Therefore, how to design a heat dissipation system for a light-emitting diode can effectively cool the light-emitting diode, and also has good space design flexibility, which is an important problem that the relevant research and development personnel in the industry need to solve.

In view of the above problems, the present invention relates to a searchlight fixture, thereby improving the problem of poor heat dissipation of the current light-emitting diode.

The searchlight of an embodiment of the present invention comprises a illuminating member and a heat dissipating member. The heat sink has a first chamber, a second chamber, and a second flow path connected between the first chamber and the second chamber. The heat sink has a bottom surface and a side surface connected thereto. The distance from the second chamber to the bottom surface is greater than the distance from the first chamber to the bottom surface, and the first chamber is filled with a working fluid. The illuminating member is in thermal contact with the side surface, and the illuminating member is adjacent to the first chamber. Wherein, when the working fluid absorbs the heat generated by the illuminating member, the working fluid is vaporized into a gas type by the liquid type, and flows into the second chamber by one of the two flow passages for heat dissipation, and the working fluid located in the second chamber is After the gas type is condensed into a liquid form, it is returned to the first chamber by the other of the second flow paths.

The searchlight of the present invention forms a closed loop by the arrangement of the two flow passages, and uses the gas-liquid change of the working fluid to conduct heat conduction in the closed loop convection. This structural design does not require active components to drive, and can be greatly improved. The efficiency of heat dissipation.

The above description of the present invention and the following description of the embodiments are intended to illustrate and explain the principles of the present invention and to provide further explanation of the scope of the patent application of the present invention.

10‧‧‧Searchlights

12‧‧‧Lighting parts

14‧‧‧ Heat sink

141‧‧‧ first ontology

142‧‧‧Second ontology

145‧‧‧ first chamber

146‧‧‧ second chamber

148‧‧‧ flow path

149‧‧‧Fixing fin set

19‧‧‧Working fluid

19'‧‧‧ gas type working fluid

20‧‧‧Searchlights

22‧‧‧Lighting parts

24‧‧‧ Heat sink

241‧‧‧ Ontology

245‧‧‧ first chamber

246‧‧‧ second chamber

248‧‧‧ flow path

249‧‧‧Fixing fin set

29‧‧‧Working fluid

29'‧‧‧ gas type working fluid

51‧‧‧ bottom

52‧‧‧ side

61‧‧‧ bottom

62‧‧‧ side

Fig. 1 is a perspective view showing the structure of a searchlight according to a first embodiment of the present invention.

Fig. 2 is a cross-sectional view of Fig. 1.

Fig. 3 is a perspective view showing the structure of the searchlight according to the second embodiment of the present creation.

Figure 4 is a cross-sectional view of Figure 3.

Please refer to Figure 1 and Figure 2. Fig. 1 is a perspective view showing the structure of a searchlight according to a first embodiment of the present invention. Fig. 2 is a cross-sectional view of Fig. 1.

The searchlight fixture 10 of the first embodiment of the present invention includes a light emitting member 12 and a heat sink 14. The light-emitting component 12 of the present invention is a solid-state light-emitting component. In the present embodiment, the light-emitting component 12 is exemplified by a light-emitting diode (LED), but is not limited thereto. It should be noted that in this embodiment and some other embodiments, the user can select the color temperature of the solid state light emitting component according to environmental requirements. The heat sink 14 has a first body 141, a second body 142, a first chamber 145, a second chamber 146, a second flow path 148, a heat sink fin set 149, and a working fluid 19.

The first body 141 has a bottom surface 51 and a side surface 52 connected thereto. The side 52 thermally contacts the illuminator 12. The first chamber 145 is located inside the first body 141, and the illuminating member 12 is adjacent to the first chamber 145. The second chamber 146 is located inside the second body 142. The heat dissipation fin group 149 is disposed on the second body 142. The second flow path 148 is located between the first chamber 145 and the second chamber 146 and communicates with the first chamber 145 and the second chamber 146. It should be noted that in this embodiment, the flow path 148 The number is two, but not limited to this. In other embodiments, the number of runners 148 can be adjusted as appropriate. The distance from the second chamber 146 to the bottom surface 51 is greater than the distance from the first chamber 145 to the bottom surface 51. The first chamber 145 is filled with a working fluid 19. In the present embodiment, the working fluid 19 is water, but is not limited thereto. In other embodiments, the working fluid 19 can also be cold coal, methanol, ethanol, diethyl ether or other liquid materials that can assist in heat transfer. Further, in the present embodiment, the cross-sectional area A1 of the flow path 148 is much smaller than the cross-sectional area A2 of the second chamber 146.

Next, the process of dissipating heat generated by the light-emitting member 12 for the heat sink 14 will be described.

When the illuminating member 12 generates heat, the thermal energy is transmitted to the first chamber 145 in the first body 141, and the working fluid 19 in the first chamber 145 absorbs the heat generated by the illuminating member 12, and is formed by the liquid type vapor. Forming a gaseous working fluid 19'. The gaseous working fluid 19' will rise and flow from one of the second flow passages 148 along a first direction D1 to a second chamber 146 (as shown in the second figure) inside the second body 142. In this embodiment, since the heat dissipation fin group 149 is disposed on the second body 142, the heat energy of the gas type working fluid 19' can be dissipated to the external environment by the heat dissipation fin group 149, but is not limited thereto. . In other embodiments, the thermal energy of the gaseous working fluid 19' may also be dissipated directly to the external environment by the second body 142. Since the gaseous type working fluid 19' dissipates its own thermal energy after flowing into the second chamber 146, the gaseous type working fluid 19' gradually condenses into the working liquid 19 of the original liquid type. At this point, the liquid type of working fluid 19 will It flows into the other of the second flow passages 148 and flows back to the first chamber 145 along a second direction D2. Further, in the present embodiment, since the cross-sectional area A1 of the flow path 148 is much smaller than the cross-sectional area A2 of the second chamber 146, there is a pressure difference between the flow path 148 and the second chamber 146. In this manner, the gaseous working fluid 19' is jetted to the second chamber 146 in a pattern of the jet stream R1 along the first direction D1, thereby accelerating heat conduction and convection.

In the searchlight fixture 10 of the first embodiment of the present invention, the working fluid 19 is vaporized into a gas-type working fluid 19' to accelerate heat conduction, and the gas-type working fluid 19' flows from one of the second flow passages 148 to the second chamber. 146 for heat dissipation. After the gas type working fluid 19' is condensed into the original liquid type working fluid 19, it is returned to the first chamber 145 via the other of the second flow passages 148, thereby forming a circulation closed loop, and then using the circulation closed The natural convection of the circuit achieves better heat dissipation and eliminates the need for active components. In addition, due to the arrangement of the second flow path 148, the searchlight fixture 10 of the present embodiment can dissipate heat at a remote end, that is, the structure of the heat conducting portion and the structure of the heat radiating portion can be separated, which makes the space design on the overall structure more convenient. In the present embodiment, the gaseous working fluid 19' is sprayed in the first direction D1 in the form of the jet stream R1 to the second chamber 146, thereby accelerating heat conduction and convection to improve heat transfer efficiency.

This creation also provides a searchlight fixture with a different structural design. Please refer to Figures 3 and 4. Fig. 3 is a perspective view showing the structure of the searchlight according to the second embodiment of the present creation. Figure 4 is a cross-sectional view of Figure 3.

The searchlight fixture 20 of the second embodiment of the present invention includes a light-emitting member 22 and a heat sink 24. In this embodiment, the illuminating member 22 is a Light-Emitting Diode (LED), but is not limited thereto. The heat sink 24 has a body 241, a first chamber 245, a second chamber 246, a second flow channel 248, a heat sink fin set 249, and a working fluid 29.

The body 241 has a bottom surface 61 and a side surface 62 connected thereto. The side surface 62 thermally contacts the light emitting member 22. The first chamber 245, the second chamber 246, and the second flow passage 248 are located inside the body 241, and the illuminating member 12 is adjacent to the first chamber 245. The heat dissipation fin group 249 is disposed on a side of the body 242 away from the light emitting member 22 . The second flow passage 248 communicates with the first chamber 245 and the second chamber 246. It should be noted that, in this embodiment, the number of the flow channels 248 is two, but is not limited thereto. In other embodiments, the number of flow channels 248 can be adjusted as appropriate. The distance from the second chamber 246 to the bottom surface 61 is greater than the distance from the first chamber 245 to the bottom surface 61. The first chamber 245 is filled with a working fluid 29. In the present embodiment, the working fluid 29 is water, but is not limited thereto. In other embodiments, the working fluid 29 can also be cold coal, methanol, ethanol, diethyl ether or other liquid materials that can assist in heat transfer. Further, in the present embodiment, the cross-sectional area A1 of the flow path 248 is much smaller than the cross-sectional area A2 of the first chamber 245.

Since the heat dissipation principle of the searchlight fixture 20 of the second embodiment of the present invention is the same as that of the first embodiment of the searchlight fixture 10, it will not be described herein.

According to the above-mentioned embodiment, the searchlight lamp is formed by a two-channel arrangement, and a gas-liquid change of the working fluid is used to conduct heat conduction in the circulating closed circuit, and the structure design does not require the driving of the active component. And it can achieve the effect of greatly improving the heat dissipation efficiency.

Furthermore, since the cross-sectional area of the flow passage is much smaller than the cross-sectional area of the second chamber, there is a pressure difference between the flow passage and the second chamber. Thereby, the gaseous working fluid is sprayed into the second chamber in the form of the jet stream, thereby accelerating the heat conduction and the convection to achieve the effect of improving the heat conduction efficiency.

Although the present invention has been described above with reference to the preferred embodiments thereof, it is not intended to limit the present invention, and anyone skilled in the art can make some changes and refinements without departing from the spirit and scope of the present invention. The scope of patent protection of the creation shall be subject to the definition of the scope of the patent application attached to this specification.

10‧‧‧Searchlights

12‧‧‧Lighting parts

14‧‧‧ Heat sink

141‧‧‧ first ontology

142‧‧‧Second ontology

145‧‧‧ first chamber

146‧‧‧ second chamber

148‧‧‧ flow path

149‧‧‧Fixing fin set

19‧‧‧Working fluid

19'‧‧‧ gas type working fluid

51‧‧‧ bottom

52‧‧‧ side

Claims (7)

A illuminating device comprising: a illuminating member; and a heat dissipating member having a first chamber, a second chamber, and a second flow path connected between the first chamber and the second chamber, the heat sink Having a bottom surface and a side surface, the distance from the second chamber to the bottom surface is greater than the distance from the first chamber to the bottom surface, and the first chamber is filled with a working fluid, and the illuminating member is in thermal contact with the side surface. And the illuminating member is adjacent to the first chamber; wherein when the working fluid absorbs heat generated by the illuminating member, the working fluid is vaporized into a gas pattern by a liquid type, and flows into the second by one of the two flow passages The chamber is configured to dissipate heat, and the working fluid located in the second chamber is condensed into a liquid form by a gas type, and is returned to the first chamber by the other of the two flow paths. The search luminaire of claim 1, wherein the cross-sectional area of each of the two flow passages is smaller than the cross-sectional area of the second chamber, so that the working fluid of the gas type is in the form of an injection airflow. One of the two flow paths is sprayed to the second chamber. The illuminating device of claim 1, wherein the heat sink further comprises a body and a heat dissipating fin set, wherein the bottom surface and the side surface are located on the body, and the heat dissipating fin set is disposed on the body away from the bottom surface The first chamber, the second chamber and the second flow channel are located in the body. The illuminating device of claim 1, wherein the heat sink further comprises a first body, a second body and a heat sink fin group, wherein the bottom surface and the side surface are located in the first body, the first chamber The second chamber is located in the second body, the heat dissipation fin group is disposed on the second body, and the two flow channels are located between the first body and the second body. The searchlight of claim 1, wherein the working fluid is water, cold coal, methanol, ethanol, diethyl ether or other liquid substances capable of assisting heat conduction. The search luminaire of claim 1, wherein the illuminating member is a solid state illuminating element. The searchlight of claim 1, wherein the illuminating member is a light emitting diode.