TW201807354A - LED light bulb having heat dissipation module the first voltage module and the second voltage module are respectively disposed on a first surface and a second surface for increasing the heat dissipating effect - Google Patents

Abstract

An LED light bulb having heat dissipation module comprises a circuit unit, a light emitting unit and a lamp holder unit. The circuit unit includes a heat blocking plate, an aluminum substrate surrounding the heat blocking plate, a reflection layer covered at the same side of the heat blocking plate and the aluminum substrate, and a first voltage module and a second voltage module electrically connected to each other, and the first and the second voltage modules are respectively disposed on the reflection layer and the heat blocking plate. The light emitting unit includes a plurality of light emitting diodes disposed on a first surface corresponding to the aluminum substrate and electrically connected to the first voltage module. The lamp holder unit includes a heat dissipation module and a shell body surrounding the heat dissipation module; the heat dissipation module includes a heat conducting plate arranged adjacent to the aluminum substrate, a heat conducting surround wall connected to the heat conducting plate, and a heat conducting space defined by the heat conducting plate and the heat conducting surround wall, and the heat conducting plate is formed with a penetrated hole allowing the second voltage module to penetrate, thereby increasing the heat dissipating effect.

Description

LED light bulb with cooling module

The invention relates to a light bulb, in particular to an LED light bulb with a heat dissipation module.

1 and 2, a conventional LED light bulb includes a circuit unit 11, a light-emitting unit 12, a lamp holder unit 13, and a lamp cover 14. The circuit unit 11 has an aluminum substrate 111 and an aluminum substrate disposed on the aluminum substrate 111. The first voltage module 112 of 111 and a second voltage module 113 electrically connected to the first voltage module 112. The light-emitting unit 12 has a plurality of LED modules 111 disposed on the aluminum substrate 111 and electrically connected to the first voltage module 112. The light-emitting diode 121 has a heat-conducting plate 131 adjacent to the aluminum substrate 111, a heat-conducting surrounding wall 132 connected to an outer periphery of the heat-conducting plate 131, and a heat-conducting surrounding wall 132 disposed in the heat-conducting surrounding wall 132. A soft layer 133 disposed on a side of the heat conducting plate 131 opposite to the aluminum substrate 111 and a heat conducting space 134 defined by the heat conducting surrounding wall 132 and the soft layer 133 together. The second voltage module 113 is disposed on The soft layer 133 is opposite to the heat conducting plate 131, and the lamp cover 14 is mounted on the lamp holder unit 13.

In use, the second voltage module 113 can convert an AC voltage of 220V to an AC voltage of 110V, and the first voltage module 112 converts the AC voltage of 110V into a DC voltage that drives the light-emitting diodes 121 to emit light, thereby enabling The LED light bulb emits light, and the heat generated by the light-emitting diodes 121 passes through the aluminum substrate 111 and the heat conducting plate 131, and finally the heat dissipation wall 132 dissipates the heat to the heat conducting space 134, thereby achieving the effect of heat dissipation. .

However, since the heat generated by the light-emitting diodes 121 also causes the first voltage module 112 to be in a high-temperature environment through the aluminum substrate 111, the long-term use of the first voltage module 112 is liable to cause heat buildup. It is too high and damaged, so further improvement of heat dissipation is a technology that is still under development.

Therefore, an object of the present invention is to provide an LED light bulb having a heat dissipation module.

Therefore, the LED light bulb with a heat dissipation module of the present invention includes a circuit unit, a light emitting unit, and a lamp base unit.

The circuit unit includes a heat blocking plate, an aluminum substrate surrounding the outer periphery of the heat blocking plate, a reflective layer covering the same side of the heat blocking plate and the aluminum substrate, and a first voltage module electrically connected to each other. And a second voltage module, the reflective layer has a first surface opposite to the heat blocking plate, the heat blocking plate has a second surface opposite to the reflective layer, the first voltage module and the second voltage mode The groups are respectively disposed on the first surface and the second surface. The light-emitting unit includes a plurality of light-emitting diodes disposed on the first surface corresponding to the aluminum substrate and electrically connected to the first voltage module. The lamp holder unit includes A heat dissipation module and a shell surrounding the outside of the heat dissipation module. The heat dissipation module has a heat conducting plate adjacent to a side of the aluminum substrate opposite to the reflective layer, and a heat conducting plate facing away from the heat conducting plate. A thermal conductive wall extending in the direction of the aluminum substrate, and a thermal conductive space defined by the thermal conductive plate and the thermal conductive wall to accommodate the second voltage module, the thermal plate has a second voltage module through Vias.

The effect of the present invention is that the first voltage module and the second voltage module are respectively disposed on the first surface and the second surface, and the heat generated by the light emitting diodes can pass through the aluminum. The design of the heat transfer plate of the substrate can improve the heat dissipation effect.

Referring to FIGS. 3 and 4, an embodiment of an LED light bulb with a heat dissipation module according to the present invention includes a circuit unit 2, a light emitting unit 3, a lamp holder unit 4, a fixing unit 5, and a lamp cover 6.

The circuit unit 2 includes a heat-shielding plate 21, an aluminum substrate 22 surrounding the outer periphery of the heat-shielding plate 21, a reflective layer 23 covering the same side of the heat-shielding plate 21 and the aluminum substrate 22, and electrically connected A first voltage module 24 and a second voltage module 25, and a plug member 26.

The reflective layer 23 has a first surface 231 opposite to the heat blocking plate 21. In this embodiment, the reflective layer 23 is used to reflect the light emitted by the light emitting unit 3, thereby improving the brightness.

The heat blocking plate 21 has a second surface 211 opposite to the reflective layer 23.

The first voltage module 24 and the second voltage module 25 are respectively disposed on the first surface 231 and the second surface 211. In this embodiment, the first voltage module 24 and the second voltage module 25 are used to convert an AC voltage of 100V to 240V into a DC voltage that drives the light emitting unit 3 to emit light.

The light emitting unit 3 includes a plurality of light emitting diodes (LEDs) 31 disposed on the first surface 231 corresponding to the aluminum substrate 22 and electrically connected to the first voltage module 24.

The lamp base unit 4 includes a heat dissipation module 41 and a casing 42 surrounding the heat dissipation module 41. In this embodiment, the casing 42 is made of a thermally conductive plastic made of PC, for example, and can meet safety regulations.

The heat dissipation module 41 has a heat conducting plate 411 adjacent to the aluminum substrate 22 on the side opposite to the reflective layer 23, a heat conducting surrounding wall 412 extending from the outer periphery of the heat conducting plate 411 in a direction away from the aluminum substrate 22, and a The heat conducting plate 411 and the heat conducting surrounding wall 412 jointly surround the heat conducting space 413 defined to receive the second voltage module 25. In this embodiment, the heat-conducting plate 411 and the heat-conducting surrounding wall 412 are made integrally, so that the heat-conducting effect can be improved.

The heat conducting plate 411 has a through hole 414 through which the second voltage module 25 can pass.

The plug member 26 of the circuit unit 2 is disposed on a side of the housing 42 opposite to the heat conducting plate 411 and electrically connects the second voltage module 25 through the heat conducting space 413 and the through hole 414 with a circuit.

The fixing unit 5 includes a plurality of positioning holes 51 located in one of the aluminum substrate 22 and the heat conducting plate 411, and a plurality of other holes provided in the aluminum substrate 22 and the heat conducting plate 411 to be respectively disposed in the The positioning post 52 of the positioning hole 51. In this embodiment, the positioning holes 51 are located on the aluminum substrate 22, and the positioning posts 52 are provided on the heat conducting plate 411.

The lampshade 6 is covered on the casing 42 from the outside of the first surface 231.

In use, the plug member 26 is inserted into a lamp holder (not shown). When the AC voltage provided by the lamp holder is 100V ~ 240V, the first voltage module 24 and the second voltage module 25 converts AC voltage to DC voltage to drive the light emitting diodes 31 to emit light.

At this time, the heat generated by the light-emitting diodes 31 during operation will be sequentially transmitted from the aluminum substrate 22 to the heat conducting plate 411 and the heat conducting surrounding wall 412, except that the heat conducting surrounding wall 412 is responsible for simultaneously transmitting heat. Dissipated in the heat-conducting space 413 and conducted to the outside through the housing 42. Since the heat-conducting plate 411 is directly adjacent to the heat-conducting space 413, it can also be used to dissipate heat in the heat-conducting space 413. And the heat-conducting surrounding wall 412 is adjacent to the heat-conducting space 413, and the heat-conducting surrounding wall 412 is also adjacent to the heat-conducting casing 42, so the heat dissipation effect is better.

Since the light-emitting diodes 31 have good heat dissipation effects, the aluminum substrate 22 surrounding the outer periphery of the heat-shielding plate 21 will not transfer heat to the heat-shielding plate 21 located in the middle, and can avoid being located on the aluminum substrate. The first voltage module 24 and the second voltage module 25 in the middle of 22 are affected by the high heat of the light-emitting diodes 31 and cause the problem of easy damage, thereby improving the service life and saving costs.

In summary, the first voltage module 24 and the second voltage module 25 are respectively disposed on the first surface 231 and the second surface 211, and the heat generated by the light emitting diodes 31 is made. Can directly pass through the aluminum substrate 22 through the heat conducting plate 411 and the heat conducting surrounding wall 412, it will not accumulate heat in the heat blocking plate 21 inward, and can improve the heat dissipation effect and the service life, so it can indeed reach the cost The purpose of the invention.

However, the above are only examples of the present invention. When the scope of implementation of the present invention cannot be limited by this, any simple equivalent changes and modifications made according to the scope of the patent application and the contents of the patent specification of the present invention are still Within the scope of the invention patent.

2‧‧‧Circuit Unit
21‧‧‧Heat barrier
211‧‧‧Second Surface
22‧‧‧ aluminum substrate
23‧‧‧Reflective layer
231‧‧‧first surface
24‧‧‧First Voltage Module
25‧‧‧Second Voltage Module
26‧‧‧Plug
3‧‧‧light-emitting unit
31‧‧‧light-emitting diode
4‧‧‧ lamp holder unit
41‧‧‧Cooling Module
411‧‧‧Heat conduction plate
412‧‧‧Conductive wall
413‧‧‧Heat conduction space
414‧‧‧via
42‧‧‧shell
5‧‧‧Fixed unit
51‧‧‧ positioning holes
52‧‧‧Positioning post
6‧‧‧ Lampshade

Other features and effects of the present invention will be clearly presented in the embodiment with reference to the drawings, in which: FIG. 1 is a schematic sectional view of an existing LED light bulb; FIG. 2 is a three-dimensional exploded view of the existing LED light bulb 3; FIG. 3 is a schematic cross-sectional view of an embodiment of an LED bulb with a heat dissipation module according to the present invention; and FIG. 4 is an exploded perspective view of the embodiment.

2‧‧‧Circuit Unit

21‧‧‧Heat barrier

22‧‧‧ aluminum substrate

23‧‧‧Reflective layer

231‧‧‧first surface

24‧‧‧First Voltage Module

25‧‧‧Second Voltage Module

4‧‧‧ lamp holder unit

411‧‧‧Heat conduction plate

412‧‧‧Conductive wall

413‧‧‧Heat conduction space

414‧‧‧via

42‧‧‧shell

5‧‧‧Fixed unit

26‧‧‧Plug

3‧‧‧light-emitting unit

31‧‧‧light-emitting diode

51‧‧‧ positioning holes

52‧‧‧Positioning post

6‧‧‧ Lampshade

Claims (5)

An LED light bulb with a heat dissipation module includes: a circuit unit including a heat blocking plate, an aluminum substrate surrounding the outer periphery of the heat blocking plate, and a reflective layer covering the same side of the heat blocking plate and the aluminum substrate And a first voltage module and a second voltage module which are electrically connected to each other, the reflective layer has a first surface opposite to the heat blocking plate, and the heat blocking plate has a second surface opposite to the reflective layer, The first voltage module and the second voltage module are respectively disposed on the first surface and the second surface; a light emitting unit includes a plurality of light emitting units disposed on the first surface corresponding to the aluminum substrate and electrically connected to the first voltage A light-emitting diode of the module; and a lamp holder unit including a heat dissipation module and a casing surrounding the outside of the heat dissipation module, the heat dissipation module having an adjacent to the aluminum substrate opposite to the reflective layer Heat conducting plate on the side, a heat conducting enclosure wall extending from the outer peripheral edge of the heat conducting plate in a direction away from the aluminum substrate, and a heat conducting space defined by the heat conducting plate and the heat conducting enclosure wall to accommodate the second voltage module , The heat transfer plate has a Vias through the second voltage module. The LED light bulb with the heat dissipation module according to claim 1, further comprising a lampshade covered on the housing. The LED light bulb with a heat dissipation module according to claim 1, wherein the circuit unit further includes a side disposed on the side of the casing opposite to the heat conduction plate and electrically connected to the heat conduction space and the through hole through a circuit. Plug component of the second voltage module. The LED light bulb with a heat dissipation module according to claim 1, further comprising a fixing unit including at least one positioning hole located on one of the aluminum substrate and the heat conducting plate, and at least one provided on the aluminum The other of the base plate and the heat conducting plate is a positioning post passing through the positioning hole. The LED light bulb with a heat dissipation module according to claim 1, wherein the first voltage module and the second voltage module are used to convert an AC voltage of 100V to 240V into a DC voltage that drives the light emitting unit to emit light.