WO2015169214A1

WO2015169214A1 - Tubular led bulb

Info

Publication number: WO2015169214A1
Application number: PCT/CN2015/078340
Authority: WO
Inventors: 张夙敏
Original assignee: 深圳市中电照明股份有限公司
Priority date: 2014-05-08
Filing date: 2015-05-06
Publication date: 2015-11-12
Also published as: CN203823530U

Abstract

Disclosed is a tubular LED bulb which can directly replace the existing energy-saving bulbs and has a good heat dissipation effect, comprising a lamp cap (1), an insulating heat sink (2), a diffuser (3), a driving circuit (4), a plurality of LEDs (6), a heat conduction column (5), and a flexible circuit board (7), wherein two ends of the insulating heat sink (2) are fixedly connected to the lamp cap (1) and the diffuser (3), respectively; the driving circuit (4) is located in an internal cavity of the insulating heat sink (2); the tail end of the heat conduction column (5) is fixedly connected to the insulating heat sink (2); the diffuser (3) is in tubular form and covers the heat conduction column (5) therein; the flexible circuit board (7) covers the side wall of the column body of the heat conduction column (5); the plurality of LEDs (6) are electrically connected to the flexible circuit board (7) and uniformly distributed along the heat conduction column (5); and the heat of the plurality of LEDs (6) is conducted and dissipated sequentially through the flexible circuit board (7), the heat conduction column (5), the insulating heat sink (2) and the lamp cap (1). The tubular LED bulb can be widely applied to the LED lighting field.

Description

Tubular LED bulb

Technical field

The utility model relates to a tubular LED bulb.

Background technique

With the development of science and technology, LED solid-state lighting sources are increasingly used, and more and more as lighting sources. The application of the existing tubular energy-saving lamps is still relatively common. If the LED bulb is used as the light source instead of the energy-saving bulb, it is better to conform to the shape of the existing energy-saving lamp, so that it is convenient to be replaced and replaced.

Utility model content

The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art, and to provide a tubular LED bulb which can directly replace the existing energy-saving light bulb and has good heat dissipation effect.

The technical scheme adopted by the utility model is as follows: the utility model comprises a lamp cap, an insulating heat dissipating component, a translucent cover, a driving circuit, a plurality of LEDs, a heat conducting column and a flexible circuit board, wherein two ends of the insulating heat dissipating component respectively The lamp holder and the transparent cover are fixedly connected, the driving circuit is located in the inner cavity of the insulating heat sink, and the tail portion of the heat conducting column is fixedly connected with the insulating heat sink, and the transparent cover is cylindrical and The heat conducting column is covered, the flexible circuit board is coated on the pillar sidewall of the heat conducting column, and a plurality of the LEDs are electrically connected to the flexible circuit board and along the heat conducting column The plurality of LEDs sequentially conduct heat and heat through the flexible circuit board, the heat conducting column, the insulating heat sink, and the lamp cap.

The front end of the transparent cover is open, and the front end of the heat conducting column is sleeved with an insulating transparent cap.

The insulated light transmissive cap is fixed to the heat conducting column by gluing.

The two ends of the insulating heat dissipating member are respectively fixed to the lamp cap and the light transmissive cover by adhesive bonding; the flexible circuit board and the heat conducting post are bonded and fixed by a thermal conductive adhesive.

The sidewall of the insulating heat sink is provided with a plurality of heat dissipation grooves.

The center of the heat conducting column is provided with a heat dissipation through hole.

The light transmissive cover is made of plastic or glass.

The translucent cover is transparent or translucent.

The heat conducting column is made of aluminum, and the insulating heat sink is made of heat conductive plastic or ceramic.

The type of the lamp cap is E27 or E26 or E14 or E12 or G24 or G23 or B22 or G9 or GU10.

The utility model has the beneficial effects that: since the utility model comprises a lamp cap, an insulating heat dissipating component, a translucent cover, a driving circuit, a plurality of LEDs, a heat conducting column and a flexible circuit board, the two ends of the insulating heat dissipating component respectively correspond to the lamp cap The light transmissive cover is fixedly connected, the driving circuit is located in the inner cavity of the insulating heat sink, and the tail portion of the heat conducting column is fixedly connected with the insulating heat sink, and the transparent cover is cylindrical and The heat conducting column is covered, the flexible circuit board is coated on the pillar sidewall of the heat conducting column, and the plurality of LEDs are electrically connected to the flexible circuit board and are evenly distributed along the heat conducting column The plurality of LEDs sequentially conduct heat and heat through the flexible circuit board, the heat conducting column, the insulating heat sink, and the lamp cap; the present invention passes the flexible circuit board, the heat conducting column, and the The insulating heat dissipating member and the lamp cap perform heat conduction and heat dissipation, and can function as heat conduction and heat dissipation on each component, and the shape thereof is consistent with the existing tubular energy-saving bulb, and the LED bulb is used as a light source instead of the energy-saving bulb. Some energy-saving lamps consistent appearance, easy to install replacement is also easy to be accepted, so that the present invention can directly replace the conventional energy-saving bulbs and cooling effect.

DRAWINGS

1 is a schematic perspective view of a first embodiment of the present invention;

2 is a schematic side view showing the structure of the first embodiment of the present invention;

Figure 3 is a schematic exploded view of the first embodiment of the present invention;

4 is a schematic side view showing the structure of the second embodiment of the present invention;

Figure 5 is a schematic cross-sectional view of the second embodiment of the present invention.

detailed description

Embodiment 1:

As shown in FIG. 1 to FIG. 3, the tubular LED bulb of the embodiment includes a lamp cap 1, an insulating heat dissipating member 2, a translucent cover 3, a driving circuit 4, a plurality of LEDs 6, a heat conducting column 5, and a flexible circuit board 7. The two ends of the insulating heat dissipating member 2 are respectively fixedly connected to the lamp cap 1 and the translucent cover 3, and specifically, both ends of the insulating heat dissipating member 2 pass through the lamp cap 1 and the translucent cover 3 respectively. The adhesive phase is fixed, the driving circuit 4 is located in the inner cavity of the insulating heat sink 2, the tail of the heat conducting column 5 is fixedly connected with the insulating heat sink 2, and the transparent cover 3 is cylindrical and The heat conducting column 5 is covered in the inner side of the column and the front end surface of the heat conducting column 5, specifically between the flexible circuit board 7 and the heat conducting column 5 Securely bonded by a thermal conductive adhesive, a plurality of the LEDs 6 are electrically connected to the flexible circuit board 7 and distributed along the heat conducting column 5, and a plurality of the LEDs 6 are sequentially passed through the flexible circuit board 7, The heat conducting column 5, the insulating heat sink 2 and the lamp cap 1 perform heat conduction and heat dissipation, and the front end of the light transmissive cover 3 is obliquely opened, so that the LED directly It is connected to the outside air to facilitate the convection of the heat dissipating air and enhance the heat dissipating effect. The front end of the heat conducting column 5 is sleeved with an insulating transparent cap 8, specifically, the insulating translucent cap 8 is fixed to the heat conducting column by gluing. 5, in order to prevent the human body from directly contacting the LED and the circuit, and avoiding the safety hazard such as electric shock, the side wall of the insulating heat dissipating member 2 is provided with a plurality of heat dissipating grooves 21, and the center of the heat conducting column 5 is provided with a heat dissipating through hole 51. In order to increase the heat dissipation channel, facilitate heat dissipation, avoid heat accumulation of the LED and high temperature, and help to prolong the life. The transparent cover 3 is made of translucent plastic, and may of course be made of glass or fully transparent. The heat conducting column 5 is made of aluminum material, and the insulating heat sink 2 is made of heat conductive plastic, of course, it can also be made of ceramic. The lamp head is of type E27, and of course it can be E26 or E14 or E12 or G24 or G23. Or other models such as B22 or G9 or GU10.

Embodiment 2:

As shown in FIG. 4 and FIG. 5, the tubular LED bulb of the present embodiment is different from the first embodiment in that, in the embodiment, the front end of the translucent cover 3 is a flat opening.

The remaining features of this embodiment are the same as those of the first embodiment.

The utility model performs heat conduction and heat dissipation through the flexible circuit board 7, the heat conducting column 8, the insulating heat sink 2 and the lamp cap 1, and can play the role of heat conduction and heat dissipation on each component, and The shape is consistent with the existing tubular energy-saving bulb, and the LED bulb is used as the light source instead of the energy-saving bulb. The shape of the existing energy-saving lamp is consistent, the installation and replacement are convenient, and it is easy to be accepted, so the utility model can directly replace the existing energy-saving bulb. And the heat dissipation effect is good.

The utility model can be widely applied to the field of LED illumination.

Claims

A tubular LED bulb comprises a lamp cap (1), an insulating fin (2), a transmissive cover (3), a driving circuit (4), and a plurality of LEDs (6), characterized in that: the tubular LED bulb Further comprising a heat conducting column (5), a flexible circuit board (7), two ends of the insulating heat sink (2) are fixedly connected to the lamp cap (1) and the transparent cover (3), respectively, the driving The circuit (4) is located in the inner cavity of the insulating heat sink (2), the tail portion of the heat conducting column (5) is fixedly connected with the insulating heat sink (2), and the transparent cover (3) is cylindrical And covering the heat conducting column (5), the flexible circuit board (7) is coated on the column sidewall of the heat conducting column (5), and the plurality of the LEDs (6) are electrically connected to The flexible circuit board (7) is evenly distributed along the heat conducting column (5), and the plurality of LEDs (6) sequentially pass through the flexible circuit board (7), the heat conducting column (5), the The insulating heat sink (2) and the lamp cap (1) perform heat conduction and heat dissipation.
The tubular LED bulb according to claim 1, characterized in that the front end of the transparent cover (3) is open, and the front end of the heat conducting column (5) is sleeved with an insulating transparent cap (8).
The tubular LED bulb according to claim 2, characterized in that the insulating light-transmissive cap (8) is fixed to the heat-conducting column (5) by gluing.
The tubular LED bulb according to claim 1, wherein both ends of the insulating heat sink (2) are respectively fixed to the lamp cap (1) and the translucent cover (3) by gluing; The flexible circuit board (7) and the heat conducting column (5) are bonded and fixed by a thermal conductive adhesive.
The tubular LED bulb according to claim 1, characterized in that the side wall of the insulating heat sink (2) is provided with a plurality of heat dissipation grooves (21).
The tubular LED bulb according to claim 1, characterized in that the center of the heat conducting column (5) is provided with a heat dissipation through hole (51).
The tubular LED bulb according to claim 1, characterized in that the translucent cover (3) is made of plastic or glass.
The tubular LED bulb according to claim 1, wherein said transparent cover (3) is Transparent or translucent.
The tubular LED bulb according to claim 1, characterized in that the heat conducting post (5) is made of aluminum and the insulating fin (2) is made of thermally conductive plastic or ceramic.
A tubular LED bulb according to claim 1, characterized in that the lamp head (1) is of the type E27 or E26 or E14 or E12 or G24 or G23 or B22 or G9 or GU10.