WO2012037840A1

WO2012037840A1 - Light bulb

Info

Publication number: WO2012037840A1
Application number: PCT/CN2011/078088
Authority: WO
Inventors: 段卫垠; 张朋朋; 郑贵清; 熊林生
Original assignee: 深圳市航嘉驰源电气股份有限公司
Priority date: 2010-09-25
Filing date: 2011-08-05
Publication date: 2012-03-29
Also published as: CN201902888U

Abstract

A light bulb comprises a light permeable shade (300) and a light holder (200) connectable to an electric power source, and also comprises a heat sink (100) provided between the light holder (200) and the light permeable shade (300). Cavities for allowing air to pass in and out are provided inside the heat sink (100). Gaps (600) for allowing air to pass in and out are provided at both ends of the heat sink (100). The light bulb is simple in shape and smooth in structural contour. The heat sink thereof is provided with the air flow cavities and gaps for air to pass in and out, with the inward and outward air flow being able to take the heat away from the inside of the heat sink, so as to accelerate heat dissipation.

Description

Bulb

Technical field

The utility model relates to a light bulb, in particular to a bulb lamp.

Background technique

There are two kinds of traditional bulbs (such as LED bulbs): one is a die-casting fin with a slight protrusion on the surface, which is more in line with the shape of a bulb or incandescent lamp. The appearance is more beautiful, but the heat dissipation effect is not Too good; the other is die-casting or aluminum extrusion machining. There are obviously high heat-dissipating fins on the outside of the lamp body. It does not look like an incandescent bulb. Although the heat dissipation effect is better, it is not beautiful enough.

Therefore, how to realize the bulb lamp has both a heat dissipation effect and a good appearance and is a technical problem to be solved in the industry.

Utility model content

The main purpose of the utility model is to provide a bulb lamp, which aims to realize that the bulb lamp has the characteristics of good heat dissipation effect, and the appearance thereof is also beautiful, conforming to the beautiful shape of the bulb lamp.

The utility model provides a bulb lamp, which comprises a translucent cover and a lamp cap connectable with a power source, and further comprises a heat dissipating device disposed between the lamp cap and the translucent cover, wherein the heat dissipating device is provided with air supply A cavity that enters and exits, and both ends of the heat dissipating device are provided with a space for air to enter and exit.

Preferably, the heat dissipation device comprises:

An outer heat dissipating cover is disposed between the lamp cap and the translucent cover, and a gap for air in and out is left between the two ends and the lamp cap and the transmissive cover;

The inner heat sink is provided with a cavity for placing the circuit chip in the middle, and is connected to the outer heat dissipation cover through a heat conducting member, and a cavity for allowing air to enter and exit is left between the outer heat dissipation cover.

Preferably, at least one heat dissipating ring connected to the heat conducting member is disposed between the outer heat sink and the inner heat sink.

Preferably, the heat dissipating device further comprises: a connecting seat, one end is connected to the outer heat dissipating cover, the other end is connected to the lamp cap, and a plurality of through holes for air in and out are provided.

Preferably, the heat dissipating device further comprises: a heat conducting substrate connected to the bottom end of the inner heat sink for absorbing heat inside the light.

Preferably, a plurality of heat dissipation ribs are disposed on the inner heat sink.

Preferably, a plurality of heat dissipation ribs are disposed on the side wall of the outer heat dissipation cover.

Preferably, the heat dissipation ribs and the heat dissipation ribs are manufactured by extrusion molding.

Preferably, the outer heat dissipation cover, the inner heat sink, the heat dissipation ribs and the surface of the heat dissipation rib are coated with a radiation heat dissipation lacquer layer.

Preferably, the outer heat sink, the inner heat sink and the heat dissipation ring are integrally formed by using a heat conductive material.

The inner heat sink of the heat dissipating device of the utility model is disposed inside the outer heat dissipating cover, so that the outer shape thereof is kept simple, the structure line is smooth, conforms to the shape style of the bulb lamp or the incandescent lamp, and the air flow is left between the inner heat sink and the outer heat dissipating cover. The cavity is provided for the air to take away heat, accelerate the heat dissipation speed, and the heat dissipation ribs and the heat dissipation ribs increase the contact area with the air to further accelerate the heat dissipation speed, and the utility model has the advantages of reducing weight and cost.

DRAWINGS

1 is a schematic view showing an exploded structure of an example of the present invention;

2 is a schematic structural view of an example of the present invention;

Figure 3 is a schematic perspective view of Figure 2;

4 is a perspective view showing an example of a heat dissipating device of the bulb lamp of the present invention;

Figure 5 is a plan view of Figure 4;

6 is a schematic view showing a horizontal section of still another example of a heat sink of the bulb lamp of the present invention;

Fig. 7 is a perspective view showing an example of a connecting seat of the bulb lamp of the present invention.

The implementation, functional features and advantages of the present invention will be further described with reference to the accompanying drawings.

detailed description

It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to FIG. 1 , FIG. 2 and FIG. 3 , an embodiment of a bulb lamp according to the present invention includes a translucent cover 300 and a lamp cap 200 connectable to a power source, and further includes a lamp cover 200 and the translucent cover disposed thereon. A heat dissipating device 100 between the 300, the cavity 100 is provided with a cavity for air to enter and exit, and the cavity is also used for placing a circuit chip 700 connected to the light emitting device 800 (such as an LED lamp), the circuit chip 700 Connected to the above-mentioned base 200, the heat dissipation device 100 is provided with a gap 600 for air in and out. The heat dissipation device 100 of this embodiment includes an outer heat dissipation cover 110 and an inner heat sink 120, wherein:

As shown in FIG. 4 and FIG. 5 , the outer heat dissipating cover 110 is disposed between the lamp cap 200 and the translucent cover 300 , and the two ends of the lamp caps 200 and the translucent cover 300 respectively allow air to enter and exit. A gap 600 is left between the light transmissive cover 300 and the gap 600 for air to enter and exit. The air can enter and exit the outer heat shield 110 through the gap to remove heat.

The inner heat sink 120, as shown in FIG. 4 and FIG. 5, is provided with a cavity for placing a circuit chip 700 for supplying power to the bulb in the middle of the inner heat sink 120, and is connected to the outer heat radiation cover 110 through the heat conductive member 130, and can be disposed inside. The heat of the heat sink 120 is transmitted to the outer heat sink cover 110, and an air flow cavity is left between the inner heat sink 120 and the outer heat sink cover 110 for air to flow through to remove heat.

If the lamp is installed vertically, when the lamp cap 200 is on, since the hot air is rising, the airflow enters from the gap 600 left between the outer heat dissipation cover 110 and the translucent cover 300, and then passes through the inner heat sink 120 and the outer heat dissipation cover. An air flow cavity is left between the 110s. After the air absorbs the heat of the heat dissipating device 100, the air flows out from the hole of the upper end connecting base 400, and the air flow is continuously exchanged to repeat the above process, thereby speeding up the heat dissipation. If the lamp is mounted vertically, when the base 200 is down, the direction of the air flow is opposite to that described above, and is carried out by the bottom. The inner heat sink 120 is disposed inside the outer heat dissipation cover 110 to keep the shape simple and the structure lines smooth, conforming to the shape of the bulb or the incandescent lamp.

Further, at least one heat dissipation ring 140 connected to the heat conduction member is disposed between the outer heat dissipation cover and the inner heat sink. As shown in FIG. 6 , the heat dissipation ring 140 is disposed between the outer heat dissipation cover and the inner heat sink to separate two

cavities

101 and 102 , and the heat dissipation ring 140 is configured to increase the surface area of the heat sink. Increase the speed of heat dissipation.

The cavity 103 of the circuit chip 700 placed above for powering the bulb may be circular or square, and the cavity 103 may be designed according to the actual shape of the circuit chip 700. The heat sink provides a vertical air passage for the airflow in and out, which is faster than the traditional curved airflow, which improves the efficiency.

The heat dissipating device further includes a connecting base 400. The embodiment is configured to be approximately conical. As shown in FIG. 7, one end of the through hole 401 is connected to the outer heat dissipating cover 110, and the other end is connected to the lamp cap 200, and a plurality of air are provided. The through hole 401 is used for airflow in and out. The shape of the through hole 401 may be circular or rectangular, and the different shapes are provided to make the appearance of the bulb have different aesthetics.

The heat dissipating device 100 further includes a heat-conducting substrate 500 connected to the bottom end of the inner heat sink 120. The heat-conducting substrate 500 is configured to absorb heat inside the light, and can quickly absorb the heat emitted by the bulb and quickly transfer it to the inner heat sink 120 for heat dissipation.

The heat dissipation ribs and the heat dissipation ribs are manufactured by extrusion molding. Extrusion molding refers to a processing method in which materials pass through the action between the barrel and the screw of the extruder, are plasticized while being pushed forward by the screw, and continuously pass through the head to make various cross-section products or semi-products. Extrusion manufacturing is less expensive than conventional die casting.

A plurality of heat dissipation ribs 121 are disposed on the inner heat sink 120. A plurality of heat dissipation ribs 111 are disposed on the side wall of the outer heat dissipation cover 110, and the heat dissipation ribs 111 of the present embodiment are disposed on the outer side. The heat dissipation ribs 121 and the heat dissipation ribs 111 can increase the heat dissipation area in contact with the air, further accelerate the heat dissipation speed, and have the advantages of reducing weight and cost.

The surface of the heat dissipating device 100 (including the outer heat dissipating cover 110, the inner heat sink 120, the heat dissipating ribs 121, the heat dissipating ribs 111 and the connecting seat 400) is coated with a radiation heat dissipating lacquer layer, which may accelerate the heat dissipating speed. The heat sink is sprayed with a high emissivity paint to greatly improve the radiation heat dissipation efficiency.

The above connector 400 is made of metal (such as a heat conductive material such as aluminum, copper or iron) or plastic.

The outer heat-dissipating cover 110, the inner heat sink 120, the heat-dissipating ring 140, the heat-dissipating ribs 121 and the heat-dissipating ribs 111 can be integrally formed by using the same heat-conducting material (such as aluminum, copper or iron), which makes the manufacturing and installation more convenient.

The above bulbs include LED bulbs or incandescent lamps, etc., or other bulbs may employ the heat sink 100 of the present invention. Moreover, since the inside of the heat dissipating device 100 of the present invention is hollow, the weight is relatively reduced, and the raw material cost is lowered.

The above description is only a preferred embodiment of the present invention, and thus does not limit the scope of the patent of the present invention, and the equivalent structural transformation made by the description of the utility model and the contents of the drawings, or directly or indirectly applied to other related technologies. The fields are all included in the scope of patent protection of the present invention.

Claims

A bulb lamp comprising a translucent cover and a lamp cap connectable to a power source, further comprising a heat dissipating device disposed between the lamp cap and the translucent cover, wherein the heat dissipating device is provided with air supply A cavity that enters and exits, and both ends of the heat dissipating device are provided with a space for air to enter and exit.
The bulb of claim 1 wherein said heat sink comprises:

An outer heat dissipating cover is disposed between the lamp cap and the translucent cover, and a gap for air in and out is left between the two ends and the lamp cap and the transmissive cover;

The inner heat sink is provided with a cavity for placing the circuit chip in the middle, and is connected to the outer heat dissipation cover through a heat conducting member, and a cavity for allowing air to enter and exit is left between the outer heat dissipation cover.
The bulb according to claim 2, wherein at least one heat dissipating ring connected to the heat conducting member is disposed between the outer heat sink and the inner heat sink.
The bulb of claim 3, wherein the heat sink further comprises:

The connecting seat has one end connected to the outer heat sink and the other end connected to the lamp cap, and is provided with a plurality of through holes for air in and out.
The bulb according to claim 4, wherein the heat sink further comprises: a heat conducting substrate connected to the bottom end of the inner heat sink for absorbing heat inside the light.
The bulb lamp according to any one of claims 1 to 5, characterized in that a plurality of heat dissipation ribs are provided on the inner heat sink.
The bulb according to claim 6, wherein a plurality of heat dissipating ribs are disposed on the side wall of the outer heat dissipating cover.
The bulb according to claim 7, wherein the heat dissipation ribs and the heat dissipation ribs are manufactured by extrusion molding.
The bulb according to claim 7, wherein the outer heat dissipation cover, the inner heat sink, the heat dissipation ribs and the surface of the heat dissipation rib are coated with a radiation heat dissipation paint layer.
The bulb according to claim 3, wherein the outer heat sink, the inner heat sink and the heat sink are integrally formed by using a heat conductive material.