CN203823705U - External expansion heat dissipation structure of LED bulbs - Google Patents

Abstract

The utility model discloses an externally connected expandable heat dissipation structure of an LED bulb, which comprises: an external threaded joint portion, which is arranged on the outer wall of the heat dissipation base of the LED bulb; and an external heat dissipation pipe, which has a heat dissipation pipe body, and the inner wall of the heat dissipation pipe body is provided with an internal threaded joint portion, and the internal threaded joint portion and the external threaded joint portion are detachably connected. According to the utility model, the external heat dissipation pipe is assembled on the outer wall of the heat dissipation base of the LED bulb in an external connection manner, expanding the heat dissipation surface area of the heat dissipation base and improving its heat dissipation effect.

Description

External expansion heat dissipation structure of LED bulbs

technical field

The utility model relates to a heat dissipation structure, in particular to an external expansion type heat dissipation structure of an LED light bulb.

Background technique

LED (Light Emitting Diode, light-emitting diode) has the advantages of small size, power saving, fast response time, rich colors, and environmental protection, and has become an indispensable and important light-emitting component in modern life. It is also commonly used as lighting fixtures to form LED lighting fixtures, such as LED bulbs.

LED light bulbs with light-emitting diodes as light sources have lamp caps with internal drive board connectors, which are the same as those of traditional tungsten filament bulbs. Therefore, they can be directly assembled on traditional lamp sockets, which is convenient to use.

LED light bulbs generally include a heat dissipation base, an LED light emitting unit, a lampshade and a driver board lamp holder. The light-emitting unit is installed on one end of the heat dissipation base and covered with a lampshade; the lamp head of the driving board is installed on the other end of the heat dissipation base through the insulating part, and is electrically connected with the light-emitting unit. The heat generated by the light emitting unit is dissipated by the heat dissipation base.

When LED is converted from electrical energy to light energy during lighting use, it will generate heat and high temperature. When it rises by 1 °C, the brightness of the LED will decrease by 0.9%. Commonly used LED light bulbs use the surface of the heat dissipation base to dissipate heat. The volume of the heat dissipation base is limited, so the heat dissipation effect is not good, which further affects the brightness of the LED, and cannot be used for high-wattage LEDs.

Utility model content

The purpose of the utility model is to provide an external expansion heat dissipation structure of the LED light bulb, which can expand the heat dissipation area of the LED light bulb and improve the heat dissipation effect.

According to the utility model, there is provided an external expansion type heat dissipation structure of LED light bulbs, which includes: an external thread joint, which is arranged on the outer wall of the heat dissipation base of the LED light bulb; The inner wall of the heat dissipation pipe is provided with an internal thread joint part, and the internal thread joint part is detachably engaged with the external thread joint part.

According to an embodiment of the present invention, the outer wall of the heat dissipation base is provided with a plurality of heat dissipation fins.

According to an embodiment of the present invention, the LED light bulb includes: a heat dissipation base, which has a first end and a second end located opposite to each other; an LED light emitting unit, which is disposed on the second end of the heat dissipation base; a lampshade, It is arranged on the second end of the heat dissipation base and covers the LED light emitting unit; the insulating part is arranged on the first end of the heat dissipation base; and the driver board lamp cap is located on the first end of the heat dissipation base through the insulation terminal, and electrically connected to the LED light emitting unit.

According to the external expansion type heat dissipation structure of the LED light bulb of the present invention, the external heat dissipation pipe is externally assembled on the external thread joint provided on the outer wall of the heat dissipation base of the LED light bulb, so as to expand the heat dissipation surface area of the heat dissipation base and increase the heat dissipation of the LED light bulb. cooling effect.

Description of drawings

FIG. 1 is an appearance view of an externally extended heat dissipation structure of an LED light bulb according to a first embodiment of the present invention.

FIG. 2 is an exploded view of the external expansion heat dissipation structure of the LED light bulb shown in FIG. 1 .

FIG. 3 is a cross-sectional view of the external expansion heat dissipation structure of the LED light bulb shown in FIG. 1 , and shows a schematic view of its assembly in a lamp holder.

Fig. 4 is a cross-sectional view of the external expansion heat dissipation structure of the LED light bulb according to the second embodiment of the present invention.

Fig. 5 is a cross-sectional view of an externally extended heat dissipation structure of an LED light bulb according to a third embodiment of the present invention.

FIG. 6 is a cross-sectional view of an externally extended heat dissipation structure of an LED light bulb according to a fourth embodiment of the present invention.

Detailed ways

The above and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of the embodiments with reference to the accompanying drawings.

Please refer to FIG. 1 to FIG. 3 , according to the embodiment of the present utility model, the external expansion heat dissipation structure 200 of the LED bulb is externally assembled on the LED bulb 100 .

The LED light bulb 100 includes a heat dissipation base 110 , an LED light emitting unit (not shown), a driver board base 120 , a lampshade 130 and an insulating portion 140 .

The heat dissipation base 110 has a first end portion 111 and a second end portion 112 opposite to each other. The LED light emitting unit includes a circuit board and at least one LED, and the LED light emitting unit is disposed on the second end 112 of the heat dissipation base 110 . The lampshade 130 is a PC lampshade, which is also disposed on the second end 112 of the heat dissipation base 110 and covers the LED light emitting unit. The insulating portion 140 is disposed on the first end portion 111 of the heat dissipation base 110 , and serves as an insulation between the heat dissipation base 110 and the lamp cap 120 of the driving board. The driver board lamp holder 120 is a connector type lamp holder, which is located at the first end portion 111 of the heat dissipation base 110 through the insulating portion 140 and is electrically connected to the LED light emitting unit. Please refer to FIG. 3 , the LED light bulb 100 can be directly installed on the lamp socket 300 according to the connector type of the lamp cap 120 of the driving board, so as to light the LED light emitting unit.

The external expansion heat dissipation structure 200 includes an external threaded joint portion 210 and an external heat dissipation pipe 220 . The external thread joint portion 210 is disposed on the outer wall of the heat dissipation base 110 of the LED bulb 100 . The external heat dissipation pipe 220 has a heat dissipation pipe body 221 , and an internal thread joint portion 222 is formed on the inner wall thereof. The external heat dissipation pipe 220 can be detachably engaged with the external thread joint portion 210 according to the internal thread joint portion 222 .

When the external heat dissipation pipe 220 is joined to the external thread joint portion 210 of the LED bulb 100, the additional heat dissipation pipe 220 extends outward along the direction of the first end 111 of the heat dissipation base 110 of the LED bulb 100, and the additional heat dissipation pipe 220 does not Its outer peripheral size and type are limited. Therefore, according to the external heat dissipation structure of the LED light bulb of the present utility model, the external heat dissipation pipe 220 is externally assembled to the external thread joint 210 provided on the outer wall of the heat dissipation base 110 of the LED light bulb 100, so as to expand the heat dissipation of the heat dissipation base 110. The heat dissipation length and the heat dissipation outer diameter increase the heat dissipation surface area of the heat dissipation base 110 . Therefore, according to the external heat dissipation structure of the LED light bulb of the present invention, the heat dissipation effect of the LED light bulb can be improved, the proper brightness of the LED light bulb can be maintained, and the LED light bulb with high wattage can be used.

In addition, before the external heat dissipation pipe 220 of the external extended heat dissipation structure 200 is assembled in the LED light bulb 100 , the external heat dissipation pipe 220 and the LED light bulb 100 belong to two independent components, so the manufacture of the LED light bulb 100 will not be affected.

Please refer to FIG. 4 , the outer wall of the heat dissipation base 110 of the LED bulb 100 is further provided with multiple heat dissipation fins 113 , which are connected to the external thread joint 210 and between the external thread joint 210 and the second end 112 . between. According to the plurality of heat dissipation fins 113 provided, the heat dissipation effect of the heat dissipation base 110 can be improved.

The shape of the lampshade 130 is not limited. For example, the lampshade may be a spherical lampshade 130 as shown in FIGS. 5 and 6 in addition to the candle-shaped lampshade 130 shown in FIGS. 1 to 4 . In addition, the power supply mode of the driver board lamp holder 120 is also not limited, that is, as shown in Figure 5, the driver board lamp holder 120 is an AC lamp holder and can be powered by AC; or as shown in Figure 6, the driver board lamp holder 120 is a DC lamp holder and can be used DC power supply.

Although the utility model is disclosed as above with the embodiment, it is not intended to limit the utility model, and any person skilled in the art can make various choices and changes without departing from the spirit and scope of the utility model, so the utility model The scope of the novelty is defined by the claims and their equivalents.

Claims (3)

1. an external connection extended radiator structure for LED bulb, is characterized in that, comprising:

Male interface, it is located at the outer wall of the cooling base of described LED bulb; And

Additional radiating tube, it has heat radiation body, and the inwall of described heat radiation body is provided with threaded female interface, described threaded female interface and engaging that described male interface can separate.

2. the external connection extended radiator structure of LED bulb as claimed in claim 1, is characterized in that, the outer wall of described cooling base is provided with multiple radiating fins.

3. the external connection extended radiator structure of LED bulb as claimed in claim 1 or 2, is characterized in that, described LED bulb comprises:

Described cooling base, its have be positioned at relatively to first end and the second end;

LED luminescence unit, it is located at the second end of described cooling base;

Lampshade, it is located at the second end of described cooling base, and covers described LED luminescence unit;

Insulation division, it is located at the first end of described cooling base; And

Drive plate lamp holder, it is positioned at the first end of described cooling base via described insulation division, and is electrically connected at described LED luminescence unit.