TWM483375U - Externally connected add-on heat-dissipation structure for LED bulb - Google Patents

Abstract

An externally connected add-on heat-dissipation structure for LED bulb includes a male-thread connection section provided on an outer wall surface of a heat-dissipation base of the LED bulb; and an add-on heat-dissipation pipe having a heat-dissipation tubular body with a female-thread connection section provided on an inner wall surface thereof. The female-thread connection section is detachably engaged with the male-thread connection section. The add-on heat-dissipation pipe is externally connected to the outer wall surface of the heat-dissipation base of the LED bulb to give the heat-dissipation base an expanded heat dissipation area and accordingly enhanced heat dissipation effect.

Description

LED bulb external expansion cooling structure

The present invention relates to a heat dissipation structure, and more particularly to an LED heat bulb external expansion heat dissipation structure.

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

The LED bulb with the light-emitting diode as the light source has a lamp head with an internal drive plate joint type, which is the same as the lamp head of the conventional tungsten light bulb, so it can be directly assembled on a conventional lamp holder for use convenience.

LED bulbs typically include a heat sink base, an LED lighting unit, a shade and a drive board base. The light-emitting unit is disposed at one end of the heat-dissipating base and covered by the lamp cover; the base of the driving plate is mounted on the other end of the heat-dissipating base via an insulating portion, and is electrically connected to the light-emitting unit. The heat generated by the light emitting unit is dissipated by the heat sink base.

When LED is used in lighting and converted into light energy by electric energy, heat and high temperature are generated. When the LED is raised by 1 ° C, the brightness of the LED is reduced by 0.9%. Conventional LED bulbs use the surface of the heat sink to dissipate heat. The heat sink base has a limited volume, so the heat dissipation effect is not good, which affects the brightness of the LED, and cannot be used for high wattage LEDs.

The invention provides an external expansion heat dissipation structure of an LED bulb, which can expand the heat dissipation area of the LED bulb and improve the heat dissipation effect.

According to one aspect of the present invention, an LED bulb external expansion heat dissipation structure is provided, comprising: an external thread joint portion disposed on an outer wall of a heat dissipation base of the LED bulb; and an external heat pipe having a heat pipe The inner wall of the body is provided with an internal threaded joint that is detachably engaged with the externally threaded joint.

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, an LED bulb includes: a heat dissipation base having a first end and a second end opposite to each other; and an LED lighting unit disposed at the second end of the heat dissipation base; a lamp cover is disposed at the second end of the heat dissipation base and covering the LED lighting unit; an insulating portion is disposed at the first end of the heat dissipation base; and a driving plate lamp head is located at the heat dissipation base via the insulating portion The first end portion is electrically connected to the LED lighting unit.

An external expansion heat sink junction of the LED bulb according to the present invention The external heat-dissipating tube is assembled to the external threaded joint provided on the outer wall of the heat-dissipating base of the LED bulb to expand the heat-dissipating surface area of the heat-dissipating base and improve the heat-dissipating effect of the LED bulb.

100‧‧‧LED bulb

110‧‧‧heating base

111‧‧‧First end

112‧‧‧ second end

113‧‧‧ Heat sink fins

120‧‧‧Drive board lamp holder

130‧‧‧shade

140‧‧‧Insulation

200‧‧‧External expansion heat dissipation structure

210‧‧‧External threaded joint

220‧‧‧plus heat pipe

221‧‧‧heat pipe body

222‧‧‧Internal thread joint

300‧‧‧ lamp holder

FIG. 1 is an external view showing an external expansion heat dissipation structure of an LED light bulb according to a first embodiment of the present invention.

Fig. 2 is an exploded view showing the external heat dissipation structure of the LED bulb shown in Fig. 1.

Fig. 3 is a cross-sectional view showing the external heat dissipating structure of the LED bulb shown in Fig. 1 and showing the use thereof in a lamp holder.

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

FIG. 5 is a cross-sectional view showing an external expansion heat dissipation structure of an LED light bulb according to a third embodiment of the present invention.

6 is a cross-sectional view showing an external expansion heat dissipation structure of an LED light bulb according to a fourth embodiment of the present invention.

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

Please refer to FIG. 1 to FIG. 3, according to an embodiment of the present invention. The LED bulb of the type is additionally connected to the LED bulb 100 by an external heat sink structure 200.

The LED bulb 100 includes a heat dissipation base 110, an LED lighting unit (not shown), a driving board base 120, a lamp cover 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 lighting unit includes a circuit board and at least one LED, and the LED lighting unit is disposed at the second end 112 of the heat dissipation base 110. The lamp cover 130 is a PC lamp cover, which is also disposed at the second end portion 112 of the heat dissipation base 110 and covers the LED lighting unit. The insulating portion 140 is disposed at the first end portion 111 of the heat dissipation base 110 to serve as insulation between the heat dissipation base 110 and the driving plate base 120. The driving plate base 120 is a connector type base, which is located at the first end portion 111 of the heat dissipation base 110 via the insulating portion 140 and is electrically connected to the LED lighting unit. Referring to FIG. 3, the LED bulb 100 can be directly mounted on a lamp holder 300 according to the connector type of the driver board 120 for illuminating the LED lighting unit.

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

When the external heat pipe 220 is joined to the external threaded joint 210 of the LED bulb 100, the external heat pipe 220 is disposed along the LED light bulb 100. The direction of the first end portion 111 of the heat dissipation base 110 extends outward, and the heat dissipation tube 220 is not limited to the outer circumference size and type. Therefore, according to the external heat dissipation structure of the LED bulb of the present invention, the external heat 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 bulb 100 to expand 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 bulb of the present invention, the heat dissipation effect of the LED bulb can be improved, the brightness of the LED bulb can be maintained, and the LED bulb of the high wattage can be used.

In addition, before the external expansion heat dissipation structure 200 is added to the LED bulb 100, the external heat dissipation tube 220 and the LED bulb 100 are separated into two independent components, and thus the LED bulb 100 is not affected.

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

The lamp cover 130 is not limited to its outer shape. For example, the lamp cover may be the globe lamp cover 130 shown in FIGS. 5 and 6 in addition to the candle-shaped lamp cover 130 shown in FIGS. 1 to 4 . In addition, the power supply mode of the driving board base 120 is also not limited, that is, as shown in FIG. 5, the driving board base 120 is an AC lamp head and can be powered by AC; or as shown in FIG. 6, the driving board base 120 is a DC lamp head. Can supply power to DC.

Although the present invention is disclosed by the above embodiments, it is not intended to limit the present invention, and the skilled person can understand various modifications and refinements without departing from the spirit and scope of the present invention. It is subject to the definition of the scope of the patent application attached.

100‧‧‧LED bulb

110‧‧‧heating base

111‧‧‧First end

112‧‧‧ second end

120‧‧‧Drive board lamp holder

130‧‧‧shade

140‧‧‧Insulation

200‧‧‧External expansion heat dissipation structure

210‧‧‧External threaded joint

220‧‧‧plus heat pipe

221‧‧‧heat pipe body

222‧‧‧Internal thread joint

300‧‧‧ lamp holder

Claims (3)

An LED light bulb external expansion heat dissipation structure includes: an external thread joint portion disposed on an outer wall of a heat dissipation base of the LED light bulb; and an external heat dissipation tube having a heat dissipation tube body, the inside of the heat dissipation tube body The wall is provided with an internally threaded engagement portion that is separable from the externally threaded engagement portion. The LED light bulb of claim 1 is connected to the extended heat dissipation structure, wherein the outer wall of the heat dissipation base is provided with a plurality of heat dissipation fins. The LED light bulb of claim 1 or 2 is connected to the extended heat dissipation structure, wherein the LED light bulb comprises: the heat dissipation base having a first end portion and a second end portion opposite to each other; an LED light emitting unit a second end portion of the heat dissipation base; a lamp cover disposed at the second end of the heat dissipation base and covering the LED light emitting unit; and an insulating portion disposed at the first end of the heat dissipation base And a driving plate base, located at the first end of the heat dissipation base via the insulating portion, and electrically connected to the LED lighting unit.