WO2013004201A1

WO2013004201A1 - Led light bulb

Info

Publication number: WO2013004201A1
Application number: PCT/CN2012/078370
Authority: WO
Inventors: 陈明允; 洪作财
Original assignee: 东莞巨扬电器有限公司
Priority date: 2011-07-07
Filing date: 2012-07-09
Publication date: 2013-01-10
Also published as: CN202165871U

Abstract

An LED light bulb (2) comprising a light bulb body (21), a light head (22), a heat sink (23), an LED light panel, and a translucent cover (24). The light head (22) is fixed on the upper part of the light bulb body (21). The LED light panel is provided with several LED lights. The translucent cover (24) covers the LED light panel. The LED light panel is arranged on one side of the lower part of the light bulb body (21); the heat sink (23) is arranged on the other side of the lower part of the light bulb body (21); while the LED light panel and the heat sink (23) are arranged in parallel at the lower part of the light bulb body (21). The heat sink of the LED light bulb is provided with a large exposed area for increased rate of heat dissipation to extend the service life of the LED light bulb and provides same with expanded range of illumination to increase use efficiency thereof.

Description

LED bulb technology

The invention relates to the technical field of LED lamps, and in particular to an LED bulb with improved heat dissipation structure. Background technique

In the prior art, generally common LED bulbs are provided with a lamp cap, a heat sink, an LED lamp panel and a light-transmitting dome cover from top to bottom, and the LED panel is provided with a plurality of LED lamps; wherein, the radiator is disposed in the LED bulb The middle position, so the radiator can only radiate heat from the side. In addition, since the exposed area of the heat sink is small, the heat dissipation capability of the heat sink is limited, so that the heat dissipation speed of the heat sink is slow, and the heat dissipation effect is poor, thereby reducing the luminous efficiency of the LED lamp and shortening the service life of the LED bulb.

In addition, there is currently a conventional technique that differs from the conventionally common LED bulbs in that it proposes a new structural design for assembly to a luminaire having a special angled socket.

Please refer to FIG. 1 and FIG. 2 , wherein FIG. 1 is a side view conceptual view of a conventional LED bulb having a special structure, and FIG. 2 is a diagram of assembling the LED bulb shown in FIG. 1 to a lamp having a tilt angle socket. Schematic diagram of the assembly concept inside.

The LED bulb 1 includes a bulb body 11, a lamp cap 12, a heat dissipation structure 13 (for example, a smooth aluminum inclined cover), an LED lamp panel (not shown), and a hemispherical transmissive cover 14; wherein, the lamp cap 12 Fixed to the upper end of the bulb body 11, the LED panel (not shown) is provided with a plurality of LED lamps (not shown), and the LED panel is in close contact with the heat dissipation structure 13 having an inclined shape, and then the hemispherical transmissive cover The 14 is then assembled with the aforementioned slanted heat dissipating structure 13 so that the LED bulb 1 can be assembled into the luminaire 10 having the special tilt angle socket 101 while still having a large illuminating range.

It can be seen from FIG. 1 and FIG. 2 that the LED bulb 1 having a special structure has a heat dissipating structure 13 and a transmissive cover 14 which are not respectively dispersed on both sides of the axis L1 of the cap 12 (ie, not located at the axis L1 of the cap 12). Therefore, when assembling the lamp 10 having the special tilt angle socket 101, the heat dissipation structure 13 is still mostly located inside the lamp 10 and is not exposed much. Therefore, the improvement of the heat dissipation problem is also helpful. many. Summary of the invention

In view of the deficiencies of the prior art, the object of the present invention is to provide a simple structure, low cost, and LED bulbs with fast heat speed, good heat dissipation, and improved LED light range and efficiency to extend the life of LED bulbs.

In order to achieve the above object, the technical solution adopted by the present invention is to provide an LED light bulb, comprising at least a bulb main body, a lamp cap, a heat sink, an LED light panel and a transmissive cover fixed to an upper end portion of the bulb main body, the LED The light board is provided with a plurality of LED lights, the light transmissive cover is disposed on the LED light board, the LED light board is disposed on one side of the lower end portion of the bulb body, and the heat sink is disposed at the lower end of the bulb main body On one side, the LED panel and the heat sink are juxtaposed at the lower end of the bulb body.

Preferably, the heat sink has a flat bottom surface and a back surface, the LED light board is attached to the bottom surface of the heat sink, and the back of the heat sink is provided with a plurality of fins.

Preferably, the back of the heat sink and the fins are exposed outside the bulb body.

Preferably, the bottom surface of the heat sink is substantially or completely parallel to the axis of the lamp cap.

Preferably, the LED panel is substantially or completely parallel to the axis of the lamp cap.

Preferably, the heat sink and the light transmissive cover have a first joint surface which is substantially or completely parallel to the axis of the lamp cap.

Preferably, the LED lamp panel and the heat sink have a second joint surface which is substantially or completely parallel to the axis of the lamp cap.

Preferably, the light transmissive cover and the heat sink each occupy approximately half of the lower end portion of the bulb body. In order to achieve the above object, another technical solution adopted by the present invention is to provide an LED bulb comprising at least a bulb body, a lamp cap, a heat sink, an LED lamp panel and a transmissive cover fixed to an upper end of the bulb body. The LED light board is provided with a plurality of LED lights, the light transmissive cover is disposed on the LED light board, the LED light board and the light transmissive cover are disposed on a side of a lower end portion of the bulb body, and the heat sink is disposed at the The other side of the lower end portion of the bulb body has a first joint surface between the heat sink and the light transmissive cover, the first joint surface being substantially or completely parallel to the axis of the lamp cap.

Preferably, the LED light panel and the heat sink have a second joint surface which is substantially or completely parallel to the axis of the lamp cap. Preferably, the light transmissive cover and the heat sink each occupy approximately half of the lower end portion of the bulb body. Preferably, the LED light panel and the heat sink are juxtaposed at the lower end of the bulb body.

In order to achieve the above object, another technical solution adopted by the present invention is to provide an LED light bulb, comprising at least a bulb main body, a lamp cap, a heat sink, an LED light panel and a transmissive cover fixed to an upper end portion of the bulb main body. The LED light board is provided with a plurality of LED lights, the light transmissive cover is disposed on the LED light board, the LED light board and the light transmissive cover are disposed on a side of a lower end portion of the bulb body, and the heat sink is disposed at the The other side of the lower end portion of the bulb body, and the heat sink and the transmissive cover disposed on the LED lamp panel are respectively located at two sides of the axis of the lamp cap.

Preferably, the heat sink has a flat bottom surface and a back substantially or completely parallel to the axis of the base, the LED light board is attached to the bottom surface of the heat sink, and the back of the heat sink is provided with a plurality of fins. .

Preferably, the LED panel and the heat sink are juxtaposed at the lower end of the bulb body.

Preferably, the light transmissive cover and the heat sink each occupy approximately half of the lower end portion of the bulb body. In order to achieve the above object, another technical solution adopted by the present invention is to provide an LED light bulb, comprising at least a bulb main body, a lamp cap, a heat sink, an LED light panel and a transmissive cover fixed to an upper end portion of the bulb main body The LED light board is provided with a plurality of LED lights, the light transmissive cover is disposed on the LED light board, the LED light board and the light transmissive cover are disposed on a side of a lower end portion of the bulb body, and the heat sink is disposed at the The other side of the lower end of the bulb body, and the heat sink has a flat bottom surface substantially or completely parallel to the axis of the base, the LED light board being attached to the bottom surface of the heat sink.

Preferably, the heat sink further has a back provided with a plurality of fins, and the back of the heat sink and the fins are exposed outside the bulb body.

Preferably, the heat sink and the light transmissive cover disposed on the LED light panel are respectively located at the axial center of the lamp cap. Preferably, the LED light panel is disposed on a side of the lower end portion of the bulb body. The heat sink is disposed on the other side of the lower end portion of the bulb body, and the LED lamp panel and the heat sink are juxtaposed at the lower end portion of the bulb body. Preferably, the light transmissive cover and the heat sink each occupy approximately half of the lower end portion of the bulb body.

With the above structure, the present invention has advantages over the prior art in that: the LED lamp panel of the present invention is disposed on one side of the lower end portion of the bulb body, and the heat sink is disposed on the other side of the lower end portion of the bulb body, And the LED light board and the heat sink are arranged side by side at the lower end of the bulb body, so that when the LED bulb is placed in a straight down or horizontal direction, the brightness of the downlight can be fully maintained. Good heat dissipation; Moreover, the invention has the advantages of simple structure, low cost, large exposed area of the heat sink, fast heat dissipation and good heat dissipation effect, thereby improving the luminous efficiency of the LED lamp and prolonging the service life of the LED bulb.

The invention will now be further described with reference to the drawings and preferred embodiments. DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a side view conceptual view of a conventional LED light bulb having a special structure.

Figure 2 is a conceptual illustration of the assembly of the LED bulb of Figure 1 into a luminaire having an angled socket.

Fig. 3 is a perspective view showing a preferred embodiment of the LED bulb of the present invention.

Figure 4 is a side elevational view of the preferred embodiment of the LED bulb of the present invention when placed in a lateral direction.

Figure 5 is a bottom plan view of the preferred embodiment of Figure 4. detailed description

The following description is only a preferred embodiment of the present invention and does not limit the scope of the present invention.

3 to FIG. 5, FIG. 3 is a perspective view of a preferred embodiment of the LED bulb of the present invention, and FIG. 4 is a side view of the preferred embodiment of the LED bulb of the present invention when placed in a lateral direction, and FIG. 4 is a bottom view of the preferred embodiment of the present invention; wherein the LED bulb 2 of the preferred embodiment of the present invention includes a bulb body 21, a lamp cap 22, a heat sink 23, an LED lamp panel, and a transmissive cover 24, and the cap 22 is fixed. At the upper end of the bulb body 21, an LED light panel (not shown) is provided with a plurality of LED lamps (not shown), the transmissive cover 24 is disposed on the LED panel, and the transmissive cover 24 and the LED panel are fixed. The lower end portion of the bulb main body 21 is provided on one side of the lower end portion of the bulb main body 21, and the heat sink 23 is provided on the other side of the lower end portion of the bulb main body 21. Among them, the type or specification of the lamp cap 22 is not limited.

That is, the translucent cover 24 and the heat sink 23 are arranged side by side at the lower end portion of the bulb main body 21; of course, the LED lamp panel and the heat sink 23 may be arranged side by side at the lower end portion of the bulb main body 21.

In addition, the heat sink 23 has a flat bottom surface 231 and a back, and the LED light board is attached to the heat sink 23 The bottom surface 230 of the heat sink 23 is provided with a plurality of fins 231. The back of the heat sink 23 and the flap 231 are exposed outside the bulb body 21.

Further, the bottom surface 230 of the heat sink 23 has a joint surface 250 with the light transmissive cover 24, and the joint surface 250 can be substantially parallel to the axis L2 of the cap 22 or completely parallel to the axis L2 of the cap 22. In this way, the heat sink 23 and the light transmissive cover 24 can each occupy half of the lower end portion of the bulb main body 21, and are respectively located on both sides of the axis L2 of the lamp cap 22.

As a preferred embodiment, the bottom surface 230 of the heat sink 23 of the present invention may be substantially parallel to the axis L2 of the base 22 or completely parallel to the axis L2 of the base 22 for the LED panel to be attached thereto; The LED light panel (not shown) attached to the bottom surface 230 of the heat sink 23 may also be substantially parallel or completely parallel to the axis L2 of the base 22.

Alternatively, the LED panel and the heat sink 23 have a separate engagement surface (not shown) which may also be substantially parallel or substantially parallel to the axis L2 of the base 22.

Of course, since LED bulbs are widely used at present, other conventional structures and principles are the same as those of the prior art, and thus will not be described again.

Therefore, when the LED bulb 2 shown in the present invention is applied to a conventional direct-type lamp holder (not shown) and placed in a straight-down manner, the fins 231 located at the back of the radiator 23 may be large. Partially exposed and will have good heat dissipation; meanwhile, when the horizontally horizontal arrangement of the present invention, the areas where the fins 231 are combined with the transparent cover 24 still have a large area to be exposed. On the side, therefore, the present invention is also applicable to another common horizontal lamp head luminaire, and can improve the heat dissipation effect and increase the illumination range of the LED bulb to improve its use efficiency and extend the service life.

The above are only the preferred embodiments of the present invention, and are not intended to limit the scope of the claims of the present invention, and all equivalent changes or modifications which are not departing from the spirit of the present invention should be included in the present invention. Within the scope of the invention.

Claims

Rights request

1. An LED light bulb comprising at least a bulb body (21), a lamp cap (22), a heat sink (23), an LED light panel and a transmissive cover (24), the lamp cap (22) being fixed to the bulb body (21) The LED panel is provided with a plurality of LED lamps, and the transmissive cover (24) is disposed on the LED panel. The LED panel is disposed at a lower end of the bulb body (21). Side, the heat sink (23) is disposed on the bulb body

On the other side of the lower end portion of (21), the LED lamp panel and the heat sink (23) are arranged side by side at the lower end portion of the bulb body (21).

2. The LED light bulb according to claim 1, wherein the heat sink (23) has a flat bottom surface (230) and a back surface, and the LED light board is attached to the bottom surface of the heat sink (23). (230), the back of the heat sink (23) is provided with a plurality of fins (231).

The LED light bulb according to claim 2, characterized in that the back of the heat sink (23) and the fins (231) are exposed outside the bulb body (21).

4. LED light bulb according to claim 2, characterized in that the bottom surface (230) of the heat sink (23) is substantially or completely parallel to the axis (L2) of the lamp cap (22).

The LED light bulb according to claim 1, characterized in that the LED light panel is substantially or completely parallel to the axis (L2) of the base (22).

The LED light bulb according to claim 1, wherein: the heat sink (23) and the light transmissive cover (24) have a first joint surface (250), and the first joint surface (250) It is substantially or completely parallel to the axis (L2) of the base (22).

The LED light bulb of claim 1 , wherein the LED light panel and the heat sink (23) have a second joint surface, the second joint surface being substantially or completely parallel to the lamp cap (22) The axis of the axis (L2).

The LED light bulb according to claim 1, characterized in that the light transmissive cover (24) and the heat sink (23) each occupy approximately half of the lower end portion of the bulb body (21).

9. An LED light bulb comprising at least a bulb body (21), a lamp cap (22), a heat sink (23), an LED light panel and a transmissive cover (24), the lamp cap (22) being fixed to the bulb body (21) Upper end, the LED light The board is provided with a plurality of LED lights, and the light transmissive cover (24) is disposed on the LED light board, wherein: the LED light board and the transparent cover (24) are disposed at a lower end of the bulb body (21) On one side, the heat sink (23) is disposed on the other side of the lower end portion of the bulb body (21), and the first heat sink (23) and the light transmissive cover (24) have a first joint surface ( 250), the first joint surface (250) is substantially or completely parallel to the axis (L2) of the lamp cap (22).

The LED light bulb according to claim 9, wherein the heat sink (23) has a flat bottom surface (230) and a back surface, and the LED light board is attached to the bottom surface of the heat sink (23). (230), the back of the heat sink (23) is provided with a plurality of fins (231).

The LED light bulb according to claim 10, characterized in that the back portion of the heat sink (23) and the fins (231) are exposed outside the bulb body (21).

12. LED light bulb according to claim 10, characterized in that the bottom surface (230) of the heat sink (23) is substantially or completely parallel to the axis (L2) of the base (22).

13. LED bulb according to claim 9, characterized in that the LED panel is substantially or completely parallel to the axis (L2) of the cap (22).

The LED light bulb according to claim 9, wherein: the LED light board and the heat sink (23) have a second joint surface, the second joint surface being substantially or completely parallel to the lamp head (22) The axis of the axis (L2).

The LED light bulb according to claim 9, wherein the light transmissive cover (24) and the heat sink (23) each occupy approximately half of the lower end portion of the bulb body (21).

The LED light bulb according to claim 9, wherein the LED light panel and the heat sink (23) are juxtaposed at the lower end portion of the bulb body (21).

17. An LED light bulb comprising at least a bulb body (21), a lamp cap (22), a heat sink (23), an LED light panel and a transmissive cover (24), the lamp cap (22) being fixed to the bulb body (21) The LED panel is provided with a plurality of LED lamps, and the transmissive cover (24) is disposed on the LED panel. The LED panel and the transmissive cover (24) are disposed on the bulb body. a side of the lower end portion of (21), the heat sink (23) is disposed on the other side of the lower end portion of the bulb body (21), and the heat sink (23) is disposed on the LED The transmissive covers (24) of the lamp panel are respectively located on opposite sides of the axis (L2) of the lamp cap (22).

18. The LED light bulb of claim 17, wherein: the heat sink (23) has a flat bottom surface (230) and a back substantially or completely parallel to the axis (L2) of the base (22). The LED light board is attached to the bottom surface (230) of the heat sink (23), and the back surface of the heat sink (23) is provided with a plurality of fins (231).

The LED light bulb according to claim 18, characterized in that the back portion of the heat sink (23) and the fins (231) are exposed outside the bulb body (21).

The LED light bulb according to claim 17, wherein: the heat sink (23) and the light transmissive cover (24) have a first joint surface (250), the first joint surface (250) It is substantially or completely parallel to the axis (L2) of the base (22).

The LED light bulb according to claim 17, wherein the LED panel and the heat sink (23) are juxtaposed at the lower end of the bulb body (21).

The LED light bulb according to claim 17, wherein the light transmissive cover (24) and the heat sink (23) each occupy approximately half of the lower end portion of the bulb body (21).

23. An LED light bulb comprising at least a bulb body (21), a lamp cap (22), a heat sink (23), an LED light panel and a transmissive cover (24), the lamp cap (22) being fixed to the bulb body (21) The LED panel is provided with a plurality of LED lamps, and the transmissive cover (24) is disposed on the LED panel. The LED panel and the transmissive cover (24) are disposed on the bulb body. On one side of the lower end portion of (21), the heat sink (23) is disposed on the other side of the lower end portion of the bulb body (21), and the heat sink (23) has a substantially or completely parallel to the base (22) A flat bottom surface (230) of the shaft (L2), the LED light board being attached to the bottom surface (230) of the heat sink (23).

The LED light bulb according to claim 23, wherein the heat sink (23) further has a back portion provided with a plurality of fins (231), and the back of the heat sink (23) and the fins (231) are exposed outside the bulb body (21).

The LED light bulb according to claim 23, wherein: the heat sink (23) and the light transmissive cover (24) have a first joint surface (250), the first joint surface (250) Roughly or completely parallel At the axis (L2) of the base (22).

The LED light bulb according to claim 23, wherein: the heat sink (23) and the light transmissive cover (24) disposed on the LED light board are respectively located at an axial center of the lamp cap (22) (L2) ) on both sides.

The LED light bulb according to claim 23, wherein: the LED light panel is disposed at one side of the lower end portion of the bulb body (21), and the heat sink (23) is disposed at the bulb body (21) On the other side of the lower end portion, the LED lamp panel and the heat sink (23) are juxtaposed at the lower end portion of the bulb body (21).

The LED light bulb according to claim 23, wherein the light transmissive cover (24) and the heat sink (23) each occupy approximately half of the lower end portion of the bulb body (21).