TWI403675B - Light device with heat-dissipating module - Google Patents

Abstract

A light device with heat dissipating module includes a light unit, at least one thermal conductive tube, at least one heat sink and at least one fan. The light unit has a base plate with plural light-emitting elements on a top face thereof. The at least one thermal conductive tube is mounted on a bottom face, with one end of the at least one thermal conductive tube coupling to the heat sink. The fan is arranged beside the heat sink to drive air current to flow through the heat sink. Consequently, the thermal conductive tube can conduct heat generated by the light unit to the heat sink and the heat is quickly dissipated by the fan.

Description

Lamp heat sink

The invention relates to a heat sink for a lamp, in particular to a heat sink for a lamp which performs heat dissipation on the lamp itself.

The Republic of China Announcement No. M339636 "LED Light Dissipation Structure (1)" and the M339202 "LED Light Dissipation Structure (II)" new patent case have a lamp body, and the lamp body can be provided with a light-emitting diode, and The heat sink is provided with a plurality of heat sinks for assisting the rapid diffusion of heat generated by the light-emitting diodes.

However, the heat sink of the lamp body can absorb the heat generated by the light-emitting diode. However, the heat sink absorbs heat and cannot exchange heat quickly. Because there is no auxiliary heat dissipation design around the heat sink, the light emitting diode can only be dissipated by the heat diffusion of the heat sink itself and the air, so the heat dissipation efficiency is poor. Therefore, the heat dissipation speed of the heat sink is far less than the heat generation speed of the light emitting diode, so that the heat sink absorbs the heat generated by the light emitting diode, but cannot rapidly dissipate heat and continuously accumulates, causing the heat sink to accumulate excessive heat. The problem seriously affects the overall heat dissipation of the luminaire.

The main object of the present invention is to provide a heat sink for a lamp to further improve the heat dissipation effect of the lamp.

A second object of the present invention is to provide a heat sink for a lamp for further miniaturization and thin design.

In order to achieve the foregoing object, the technical means and the achievable effects of the present invention include: a heat sink for a lamp, comprising at least one light fixture, at least one heat pipe, at least one heat sink, and at least one fan. The luminaire has a substrate, and one surface of the substrate is provided with a plurality of illuminating sources, the heat conducting tube is disposed on the other surface of the substrate, the heat sink is coupled to one end of the heat conducting tube, and the fan is disposed at the heat dissipation One side of the device is configured to drive airflow through the heat sink to assist in heat dissipation of the heat sink.

Therefore, the present invention can utilize the excellent heat conduction characteristics of the heat pipe to rapidly transfer the heat generated by the lamp to the heat sink, and at the same time, the fan drives the airflow through the heat sink to exchange heat with the outside. To assist the heat sink to dissipate heat quickly, to improve the overall heat dissipation of the lamp.

Furthermore, the fan of the present invention can be selected from an axial flow type or an air blower type fan, so that even if the space around the lamp is limited, the air inlet and outlet directions of the fan can be flexibly changed to further miniaturize and Thin design without affecting its overall heat dissipation performance.

The above and other objects, features and advantages of the present invention will become more <RTIgt; The heat dissipation device for a lamp according to the first embodiment of the present invention comprises a lamp 1, a heat pipe 21, a heat sink 31 and a fan 4.

The luminaire 1 has a substrate 11 having two surfaces, one of which is provided with a plurality of illuminating sources 12, and the illuminating source 12 is preferably a light emitting diode (LED).

The heat pipe 21 is disposed on the other surface of the substrate 11. The heat pipe 21 and the light source 12 are respectively located at corresponding positions of the two surfaces of the substrate 11, and one end of the heat pipe 21 can be extended to The substrate 11 is outside.

The heat sink 31 is coupled to one end of the heat pipe 21 , and the heat sink 31 is preferably selected from the heat sink fins, and the heat sink 31 is preferably coupled to the heat pipe 21 to extend to one end of the substrate 11 .

The fan 4 is disposed on one side of the heat sink 31 for driving airflow through the heat sink 31. The fan 4 can be selected as one of an axial flow type or an air blower type fan, and is preferably selected as An axial flow fan. In addition, the fan 4 can be fixed to the heat sink 31 by any physical combination such as screwing or embedding, or can be selected at a predetermined position of the lamp cover [not shown].

Thereby, the heat sink of the lamp according to the first embodiment of the present invention is implemented. The heat generated by the lamp 1 can be quickly transmitted to the heat sink 31 through the heat pipe 21, and the fan 4 is used to drive the airflow through the heat sink 31, so that the heat sink 31 exchanges heat with the outside to assist the The heat sink 31 dissipates heat rapidly to improve the overall heat dissipation effect.

Referring to Figures 3 and 4, a heat sink for a lamp according to a second embodiment of the present invention includes a plate body 51, four lamps 1, four heat pipes 22, two heat sinks 32, and two fans 4.

The plate body 51 is made of a material having good heat transfer efficiency, and is preferably selected from an aluminum material. The plate body 51 has two surfaces, one surface is provided for each of the lamps 1 and the other surface is provided with the heat pipes 22 to integrate the lamps 1 and the heat pipes 22.

The overall structure of the lamp 1 is the same as that of the first embodiment described above. The four lamps 1 are disposed on one surface of the plate body 51, preferably arranged side by side in the same direction, and each of the lamps 1 is disposed on a surface of the plate body 51 with the surface of the substrate 11 not provided with the light source 12. .

The four heat pipes 22 are disposed on the other surface of the plate body 51, and the four heat pipes 22 and the four lamps 1 are preferably located at mutually corresponding positions of the two surfaces of the plate body 51. One end of each of the heat transfer tubes 22 may extend outside the plate body 51, and at least one heat transfer tube 22 is opposite to the extending direction of the other heat transfer tubes 22. More specifically, at least two adjacent heat pipes 22 may be selected to extend in opposite directions, or non-adjacent heat pipes 22 may be selected to extend in the same direction.

The heat sink 32 is coupled to one end of the heat pipe 22, and is preferably coupled to each of the heat pipe 22 to extend to one end of the plate body 51. In this embodiment, the heat pipes 22 extending in the same direction are commonly coupled to a heat sink 32. Furthermore, a heat sink 32 may be coupled to each of the heat transfer tubes 22 at one end.

The fan 4 is disposed on one side of the heat sink 32 for driving airflow through the heat sink 32. The fan 4 can be selected as one of an axial flow or an air blower fan, preferably also selected as An axial flow fan. In addition, the fan 4 can be fixed to the heat sink 32 by any physical combination such as screwing or embedding, or can be selectively disposed at a predetermined position of the lamp cover (not shown).

Thereby, the lamp heat sink of the second embodiment of the present invention is implemented. The same can achieve rapid cooling. Moreover, in this embodiment, a plurality of lamps 1 and heat pipes 22 are integrally disposed on a plate body 51. On the one hand, the lamps 1 can provide large-area illumination, and at the same time, the lamps 1 can be provided with an integral heat dissipation device.

Referring to Figures 5 and 6, a heat sink for a lamp according to a third embodiment of the present invention includes a plate body 52, two lamps 1, four heat pipes 23, two heat sinks 32, and two fans 4.

The plate body 52 is made of a material having good heat transfer efficiency, and is preferably selected from an aluminum material. The plate body 52 has two surfaces, one surface is provided for each of the lamps 1 and the other surface is provided for each of the heat pipes 23.

The overall structure of the lamp 1 is the same as that of the first embodiment and the second embodiment described above. The two lamps 1 are disposed on one surface of the plate body 52, preferably arranged side by side in the same direction, and the lamps 1 are disposed on a surface of the plate body 52 with the surface of the substrate 11 not provided with the light source 12 .

The four heat pipes 23 are disposed on the other surface of the plate body 52. The four heat pipes 23 and the two lamps 1 are preferably located at corresponding positions of the two surfaces of the plate body 52, and are provided by two heat pipes. 23 corresponds to a lamp 1 at the same time. More specifically, the two heat pipes 23 having a shorter size can be selected to simultaneously correspond to one lamp 1, and one ends of the two heat pipes 23 are aligned with each other and arranged in the same direction, and the other end is extended outward to the plate body 52. outer.

The heat sink 32 is coupled to one end of the heat pipe 23 and is preferably coupled to the heat pipe 23 to extend to one end of the plate body 52. In this embodiment, each adjacent heat pipe 23 is commonly coupled to a heat sink 32. Furthermore, it is also possible to selectively combine a heat sink 32 at each end of each of the heat transfer tubes 23.

The fan 4 is disposed on one side of the heat sink 32 for driving airflow through the heat sink 32. The fan 4 can be selected as one of an axial flow or an air blower fan, preferably also selected as An axial flow fan. In addition, the fan 4 can be fixed to the heat sink 32 by any physical combination such as screwing or embedding, or can be selectively disposed at a predetermined position of the lamp cover (not shown).

Thereby, the lamp heat sink of the third embodiment of the present invention is implemented. The heat pipe 23 having a shorter size is used to simultaneously correspond to a lamp 1 so that the heat generated by the lamp 1 can be quickly transmitted by the two heat pipes 23 to shorten the heat transfer distance and increase the heat transfer speed, so that the heat is more quickly Conducted to the heat sink 32 to further enhance heat dissipation.

Referring to Figures 7, 8, and 9, a heat sink for a lamp according to a fourth embodiment of the present invention includes a lamp 1, a heat pipe 24, a heat sink 33, and a fan 4'.

Compared with the foregoing first embodiment, the fan 4' of the fourth embodiment is selected from a blower fan, and the blower fan 4' guides the airflow through the radiator 33 and then passes through the side thereof. The air outlet is blown out, and an air guiding cover 6 is disposed between the fan 4' and the heat sink 33. The air guiding cover 6 is configured to guide the airflow to flow more concentratedly around the periphery of the heat sink 33 to improve the overall heat dissipation. effect.

In addition, the heat pipe 24 of the fourth embodiment has a heat conducting portion 241 and a heat radiating portion 242. The heat conducting portion 241 and the heat radiating portion 242 are each formed with a long axis 243 and a short axis 244. The long axis is formed. 243 and the short axis 244 are preferably vertically disposed, and the distance of the long axis 243 is greater than the distance of the short axis 244.

The heat conducting portion 241 of the heat conducting tube 24 is disposed on the surface of the substrate 11 of the lamp 1, and the long axis 243 of the heat conducting portion 241 is disposed in a direction parallel to the surface of the substrate 11. The heat radiating portion 242 of the heat conducting tube 24 extends. The heat sink 33 is coupled to the heat dissipation portion 242 of the heat pipe 24, and the long axis 243 of the heat dissipation portion 242 is disposed parallel to the flow direction of the airflow guided by the fan 4'.

Referring to Figures 10 and 11, a heat sink for a lamp according to a fifth embodiment of the present invention includes a plate body 53, two lamps 1, two heat pipes 25, two heat sinks 34, and two fans 4'.

Compared with the foregoing fourth embodiment, the two lamps 1 of the fifth embodiment are disposed on one surface of the plate body 53, and the other surface of the plate body 53 is provided with the two heat pipes 25 to The two lamps 1 and the two heat pipes 25 are integrated.

In addition, the heat pipe 25 of the fifth embodiment has a heat conducting portion 251 and two heat radiating portions 252. The heat radiating portions 252 are located at two ends of the heat conducting portion 251, and the heat conducting portion 251 and the heat radiating portions 252 are The cross-sectional shape is formed with a long axis 253 and a short axis 254. The long axis 253 and the short axis 254 are preferably vertically disposed, and the distance of the long axis 253 is greater than the distance of the short axis 254.

The heat conducting portion 251 of the heat conducting tube 25 is disposed on the surface of the plate body 53, and the long axis 253 of the heat conducting portion 251 is disposed in a direction parallel to the surface of the plate body 53. The heat radiating portion 252 of the heat conducting tube 25 extends to The heat sink 34 is coupled to the heat dissipation portion 252 of the two heat transfer tubes 25, and the long axis 253 of the heat dissipation portion 252 is disposed parallel to the flow direction of the airflow guided by the fan 4'.

Thereby, the lamp heat sink of the fourth and fifth embodiments of the present invention is implemented. The fan 4' guides the airflow to flow through the radiators 33, 34 and then blows out through the air outlets on the sides thereof. Therefore, even if the space around the lamp 1 is limited, the air inlet and outlet of the fan 4' can be flexibly changed. The direction of the wind does not affect its overall heat dissipation performance. Moreover, the long axes 243 and 253 of the heat dissipating portions 24 and 25 of the heat transfer tubes 24 and 25 are arranged parallel to the flow direction of the airflow guided by the fan 4', which can reduce the wind resistance caused by the airflow and increase the airflow. Smoothness to improve overall heat dissipation.

While the invention has been described in connection with the preferred embodiments described above, it is not intended to limit the scope of the invention. The technical scope of the invention is protected, and therefore the scope of the invention is defined by the scope of the appended claims.

1. . . Lamp

11. . . Substrate

12. . . Light source

twenty one. . . Heat pipe

twenty two. . . Heat pipe

twenty three. . . Heat pipe

twenty four. . . Heat pipe

241. . . Heat transfer department

242. . . Heat sink

243. . . Long axis

244. . . Short axis

25. . . Heat pipe

251. . . Heat transfer department

252. . . Heat sink

253. . . Long axis

254. . . Short axis

31. . . heat sink

32. . . heat sink

33. . . heat sink

34. . . heat sink

4. . . fan

4’. . . fan

51. . . Plate body

52. . . Plate body

53. . . Plate body

6. . . Wind shield

Fig. 1 is a perspective view showing the first embodiment of the present invention.

Fig. 2 is a plan view showing the first embodiment of the present invention.

Figure 3 is a perspective view of a second embodiment of the present invention.

Figure 4 is a plan view showing a second embodiment of the present invention.

Fig. 5 is a perspective view showing a third embodiment of the present invention.

Figure 6 is a plan view showing a third embodiment of the present invention.

Figure 7 is a perspective view of a fourth embodiment of the present invention.

Figure 8 is a plan view showing a fourth embodiment of the present invention.

Figure 9 is a side elevational view of a fourth embodiment of the present invention.

Fig. 10 is a perspective view showing a third embodiment of the present invention.

Figure 11 is a side elevational view of a fifth embodiment of the present invention.

1. . . Lamp

11. . . Substrate

12. . . Light source

twenty one. . . Heat pipe

31. . . heat sink

4. . . fan

Claims (12)

A heat sink for a lamp, comprising: a lamp having a substrate, wherein the substrate has two surfaces, wherein one surface is provided with a plurality of light sources; and a heat pipe is disposed on the other surface of the substrate, the heat pipe has a heat conducting portion and a heat dissipating portion, wherein the heat conducting portion is disposed on the surface of the substrate; a heat sink is coupled to the heat dissipating portion of the heat pipe; and a fan is disposed on a side of the heat sink; The cross-sectional shape of the heat conducting portion and the heat dissipating portion are both formed with a long axis and a short axis. The distance of the long axis is greater than the distance of the short axis, and the long axis of the heat conducting portion is disposed in a direction parallel to the surface of the substrate, the heat dissipation The long axis of the portion is disposed parallel to the flow direction of the airflow guided by the fan, and the long axis direction of the heat radiating portion is different from the long axis direction of the heat conducting portion. The heat sink of the lamp according to the first aspect of the invention, wherein the heat dissipating portion of the heat pipe is located outside the substrate. The heat sink of the lamp according to the first aspect of the invention, wherein the heat sink of the lamp further comprises a plate body, the lamp is disposed on a surface of the plate body, and the heat pipe is disposed on the other side of the plate body surface. The heat sink of the lamp of claim 3, wherein the heat dissipating portion of the heat pipe is located outside the plate. The heat sink of the lamp according to the third aspect of the patent application, wherein the heat sink of the lamp further comprises at least one light fixture, wherein the light fixtures are arranged side by side in the same direction. The heat sink of the lamp according to claim 1, 2, 3, 4 or 5 of the patent application, wherein the fan can be selected as an axial fan or an air blower fan. The heat sink of the lamp according to the first, third or fifth aspect of the invention, wherein the heat sink of the lamp further comprises at least one heat pipe, and the heat radiating portion of the at least one heat pipe is combined with the heat sink. The heat sink of the lamp according to the first, third or fifth aspect of the patent application, wherein the heat sink of the lamp further comprises at least one heat pipe, at least one fan and at least one heat sink, and the at least one heat sink is provided The heat dissipation portion of the at least one heat pipe is combined. The heat dissipating device of the lamp according to claim 8 , wherein the heat pipes are arranged side by side in the same direction, and each of the heat pipes is coupled to opposite ends of the adjacent heat pipes. According to the heat dissipation device of the lamp of claim 8, wherein the heat pipes are arranged in opposite directions with the ends of the heat conducting portions, and the heat radiating portions of the heat pipes are respectively combined with the heat sinks. . The heat dissipation device of the lamp of claim 1 or 3, wherein the heat pipe has another heat dissipation portion, the heat dissipation portions are located at two ends of the heat conduction portion, and the heat dissipation device of the lamp further comprises at least one fan And at least one heat sink, the at least one heat sink is coupled to the other heat sink. The heat sink of the lamp according to the first, second, third, fourth or fifth aspect of the patent application, wherein an air guiding cover is arranged between the heat sink and the fan.