TWM446868U - Light bulb heat dissipation device - Google Patents

Description

Bulb light radiator

The present invention relates to a heat sink for a lamp, and more particularly to a bulb heat sink combined with a bulb lamp.

Nowadays, there are many kinds of lighting facilities, and the lighting equipment that utilizes electric energy illumination can not avoid the heat dissipation problem at the same time. For example, Light Emitting Diode (LED) light has small volume, low driving voltage, fast reaction rate, excellent shock resistance, diversified colors, fast lighting speed, and no image sticking. And the life expectancy is 50 to 100 times longer than traditional bulbs. However, when the light-emitting diode bulb achieves the above various advantages, it also inevitably generates a problem of high thermal energy. Poor heat dissipation will not only reduce the brightness due to the lower internal quantum conversion efficiency of the LED, but also reduce the life of the package material due to heat and affect the reliability of the product.

In order to improve the heat dissipation of lighting equipment, how to design a heat sink that improves heat dissipation efficiency has always been a very important issue.

The conventional bulb cooling device places the driving circuit in a plastic tube and is attached to a conductor heat sink or the driving circuit is covered by a heat shrink sleeve and placed in a conductor heat sink. The conductor heat sink is simultaneously The light-emitting circuit of the bulb and the driving circuit are connected, and the heat generated by both of them is radiated through the heat sink of the conductor. In this way, after the heat generated by the driving circuit is introduced into the heat sink of the conductor, the light-emitting circuit is caused to conduct heat to the heat sink of the conductor, so that the heat dissipation of the bulb is not easy.

Therefore, the purpose of the present invention is to provide a bulb heat sink that improves the problems of the prior art to achieve better heat dissipation.

The technical means used in solving the problem of the prior art is a bulb heat sink, which is combined with a bulb lamp, the bulb lamp has a light-emitting circuit portion and a drive circuit portion electrically connected to the light-emitting circuit portion, wherein the ball The heat dissipating device includes a heat dissipating outer ring body, the heat dissipating outer ring body is in thermal contact with the light emitting circuit portion and is disposed around the outer peripheral side of the driving circuit portion, and the heat dissipating outer ring body and the driving circuit portion are spaced apart from each other to dissipate the outer ring body and A heat dissipation path is formed between the driving circuit portions to reduce heat transfer between the light emitting circuit portion and the driving circuit portion.

In an embodiment of the present invention, one end of the heat dissipation channel is connected to the light emitting circuit portion, and the other end of the heat dissipation channel is extended to communicate with the outside of the bulb lamp.

In an embodiment of the present invention, one end of the heat dissipation channel is connected to the light emitting circuit portion, and the heat dissipation outer ring body has a side opening near the communication end of the heat dissipation channel.

In an embodiment of the present invention, the outer ring surface of the heat dissipating outer ring body further has a plurality of heat dissipating fins extending outward.

In an embodiment of the present invention, the heat dissipating fins are radially disposed outside the outer surface of the heat dissipating outer ring body.

In an embodiment of the present invention, the extension length of the heat dissipation fin is gradually decreasing in a direction away from the light emitting circuit portion.

In an embodiment of the present invention, the light emitting circuit portion includes an LED light emitting unit, and the driving circuit portion is an LED driving circuit.

In an embodiment of the present invention, a heat dissipating inner ring body is further disposed to be in thermal contact with the outer peripheral side of the driving circuit portion, and the heat dissipating channel is located between the heat dissipating inner ring body and the heat dissipating outer ring body.

In an embodiment of the present invention, a heat sinking top plate is further connected The outer ring body is radiated and thermally contacted with the light emitting circuit portion.

According to the technical means adopted in the present invention, heat transfer between the light-emitting circuit portion of the bulb lamp and the drive circuit portion can be greatly reduced, so that the heat dissipation mechanisms of the two are not directly affected by each other, thereby improving heat dissipation efficiency. Moreover, the air inside and outside the bulb can be circulated through the heat dissipation channel to dissipate heat. In addition, in the preferred embodiment, the outer peripheral side of the driving circuit portion is surrounded by the heat dissipating inner ring body to enhance heat conduction of the driving circuit portion and improve heat dissipation efficiency.

The specific embodiments of the present invention will be further described by the following examples and accompanying drawings.

Referring to FIG. 1 to FIG. 4, FIG. 1 is a perspective view showing a bulb lamp heat sink combined with a bulb lamp according to an embodiment of the present invention, and FIG. 2 is a view showing a bulb of an embodiment of the present creation. A side cross-sectional view of a lamp heat sink, FIG. 3 is a top cross-sectional view showing a bulb heat sink of one embodiment of the present invention, and FIG. 4 is a view showing a bulb heat sink of an embodiment of the present invention. Upper view of the heat sink top.

As shown in the figure, in one embodiment of the present invention, a bulb heat sink 2 is coupled to a bulb 1.

In the present embodiment, the bulb lamp 1 includes a light emitting circuit portion 11, a driving circuit portion 12, and a lamp cover 13. The light-emitting circuit unit 11 includes a light-emitting unit 111 and is electrically connected to the drive circuit unit 12, and the lamp cover 13 is placed over the light-emitting circuit unit 11. The light-emitting unit 111 can be any light-emitting element that is driven by the driving circuit portion 12 to drive the light-emitting circuit portion 11 with electric energy. For example, the light-emitting unit 111 is an LED light-emitting unit, and the driving circuit portion 12 is an LED driving circuit. .

The bulb heat sink 2 includes a heat dissipating outer ring body 21. The heat radiating outer ring body 21 is in thermal contact with the light emitting circuit portion 11 of the bulb lamp 1 and is disposed on the outer peripheral side of the drive circuit portion 12. The heat dissipating outer ring body 21 and the driving circuit portion 12 are separated by a gap, and the gap constitutes a heat dissipating passage 22. One end of the heat dissipation passage 22 communicates with the light-emitting circuit portion 11 of the bulb lamp 1, and the other end extends to communicate with the outside of the bulb lamp. In addition, the above-mentioned thermal contact may be such that the two-element structure is directly attached to each other or filled with any gas, liquid or solid which can help dissipate heat, for example, a thermal grease.

With the above structure, the heat dissipation channel 22 of the bulb heat sink 2 can block the heat transfer between the drive circuit portion 12 of the bulb lamp 1 and the light-emitting circuit portion 11, so that the individual heat dissipation mechanisms are not directly Make an impact on each other. In addition, one end of the heat dissipation channel 22 communicates with the outside of the bulb lamp 1, and the air generated by the driving circuit portion 12 and the light-emitting circuit portion 11 of the bulb lamp 1 can be dispersed to the outside of the bulb lamp 1 by air convection. In order to improve the overall heat dissipation efficiency.

In addition, in order to improve the heat dissipation efficiency of the heat dissipating outer ring body 21, in the embodiment, the heat dissipating outer ring body 21 has a plurality of heat dissipating fins 211 extending outwardly on the outer ring surface thereof to increase the heat dissipating area thereof. The extension manner and shape of the heat dissipation fins 211 can be changed according to the requirements of the bulb lamps of different structures. In this embodiment, the heat dissipation fins 211 extend outward in a radial direction, and the heat dissipation area of the heat dissipation outer ring body 21 is increased in a large amount, and the heat dissipation outer ring body 21 is larger near the light emitting circuit portion 11 due to the heat dissipation requirement thereof. The distance from the light-emitting circuit portion 11 is small, so that the extending length of the heat-dissipating fins 211 is gradually reduced in the direction away from the light-emitting circuit portion 11 so that the heat-dissipating fins exert an optimal heat-dissipating effect.

In addition, preferably, the heat dissipating outer ring body 21 of the bulb heat sink 2 further has a side opening 212. The position of the lateral opening 212 is close to the communication end of the heat dissipation channel 22 and the light-emitting circuit portion 11, thereby dissipating heat. The passage 22 communicates with the outside of the bulb lamp 1. Thereby, air convection between the heat dissipation passage 22 and the outside of the bulb 1 is increased to improve heat dissipation efficiency.

In addition, in the present embodiment, the bulb heat sink 2 further includes a heat dissipating inner ring body 23. The heat dissipating inner ring body 23 is connected to the heat dissipating outer ring body 21 by a connecting portion 25, and is thermally contacted and disposed around the outer peripheral side of the driving circuit portion 12. The heat dissipation inner ring body 23 and the heat dissipation outer ring body 21 are the heat dissipation channels 22. Thereby, the heat conduction of the drive circuit portion 12 is enhanced, and the heat dissipation efficiency is improved.

On the other hand, in order to allow the heat energy generated by the light-emitting circuit portion 11 of the bulb lamp 1 to be more quickly transmitted to the heat-dissipating outer ring body 21 and discharged outside the bulb lamp 1. In the embodiment, the bulb heat sink 2 further includes a heat dissipation top plate 24. As shown in FIG. 4, the heat dissipation top plate 24 has a connection hole 241, a fixing hole 242, and an opening 243. The connection hole 241 is a circuit connection hole of the light-emitting circuit portion 11 of the bulb lamp 1 and the drive circuit portion 12. The fixing hole 242 is used for a locking member (not shown, for example, a screw) to lock the heat dissipation top plate 24 between the light emitting circuit portion 11 and the driving circuit portion 12.

The one surface of the heat dissipation top plate 24 is connected to the heat dissipation outer ring body 21, and the other surface is in thermal contact with the light emitting circuit portion 11. In this way, the heat energy generated by the light-emitting circuit portion 11 can be quickly transmitted to the heat-dissipating outer ring body 21 via the heat-dissipating top plate 24 to dissipate heat or communicate with the heat-dissipating channel 22 through the opening 243 to dissipate heat in a heat convection manner.

It can be seen from the above embodiments that the bulb heat dissipating device provided by the present invention has industrial utilization value, so the original operation has met the requirements of the patent. However, the above description is only for the preferred embodiment of the present invention, and those skilled in the art may make other improvements according to the above description, but these changes still belong to the creative spirit of the creation and the following definitions. In the scope of patents.

1‧‧‧ bulb lamp

11‧‧‧Lighting Circuits Department

111‧‧‧Lighting unit

12‧‧‧Drive Circuit Division

13‧‧‧shade

2‧‧‧Bubble lamp heat sink

21‧‧‧Thermal outer ring

211‧‧‧ Heat sink fins

212‧‧‧ lateral opening

22‧‧‧Solution channel

23‧‧‧heating inner ring

24‧‧‧heating top plate

241‧‧‧connection hole

242‧‧‧Fixed holes

243‧‧‧Opening

25‧‧‧Connecting Department

Fig. 1 is a perspective view showing a bulb lamp heat sink combined with a bulb lamp according to an embodiment of the present invention.

Figure 2 is a side cross-sectional view showing the bulb heat sink of one embodiment of the present invention in combination with a bulb.

Figure 3 is a diagram showing the bulb heat sink of one embodiment of the present invention. Top view.

Figure 4 is a diagram showing the bulb heat sink of one embodiment of the present invention. The top view of the cooling top plate.

1‧‧‧ bulb lamp

2‧‧‧Bubble lamp heat sink

211‧‧‧ Heat sink fins

Claims (9)

A bulb lamp heat dissipating device is coupled to a bulb lamp, wherein the bulb lamp has a light emitting circuit portion and a driving circuit portion electrically connected to the light emitting circuit portion, wherein the bulb lamp heat dissipating device comprises a heat dissipating outer ring body, The heat dissipating outer ring body is in thermal contact with the light emitting circuit portion and surrounds the outer peripheral side of the driving circuit portion, and the heat dissipating outer ring body is spaced apart from the driving circuit portion by the distance between the heat dissipating outer ring body and the driving circuit portion A heat dissipation channel is formed therebetween to reduce heat transfer between the light emitting circuit portion and the driving circuit portion. The bulb heat sink of claim 1, wherein one end of the heat dissipation channel is connected to the light emitting circuit portion, and the other end of the heat dissipation channel extends to communicate with the outside of the bulb. The bulb heat dissipation device of claim 1, wherein one end of the heat dissipation channel is in communication with the light emitting circuit portion, and the heat dissipation outer ring body has a side opening near the communication end of the heat dissipation channel. The bulb heat dissipating device of claim 1, wherein the outer ring surface of the heat dissipating outer ring body further has a plurality of fins extending outward. The bulb heat dissipation device of claim 4, wherein the heat dissipation fins are radially disposed outside the heat dissipation outer ring body. The bulb heat dissipation device of claim 4, wherein the extension length of the heat dissipation fins is gradually decreasing in a direction away from the light emitting circuit portion. The bulb lamp heat sink according to claim 1, wherein the light emitting circuit portion comprises an LED lighting unit, and the driving circuit portion is an LED driving circuit. The bulb heat sink of claim 1, further comprising a heat dissipating inner ring body that is in thermal contact with the outer peripheral side of the driving circuit portion, The heat dissipation channel is located between the heat dissipation inner ring body and the heat dissipation outer ring body. The bulb heat dissipation device of claim 1, further comprising a heat dissipation top plate connected to the heat dissipation outer ring body and in thermal contact with the light emitting circuit portion.