WO2011088604A1

WO2011088604A1 - Led bulb

Info

Publication number: WO2011088604A1
Application number: PCT/CN2010/001564
Authority: WO
Inventors: 林陈锋; 傅景灿
Original assignee: 深圳市日锋电子有限公司
Priority date: 2010-01-22
Filing date: 2010-10-08
Publication date: 2011-07-28
Also published as: CN101725857A; CN102062319A

Abstract

An LED bulb includes a bulb body (1), a radiator (2), an LED light source patch (3), a driver (4) electrically connected with the LED light source patch and a lamp head (6). The radiator is a cylindrical radiator with one closed end. The LED light source patch adheres to the outer end face of the closed end of the cylindrical radiator. The driver is mounted on the inner end face of the closed end of the cylindrical radiator. The driver is connected with the lamp head.

Description

LED light bulb

The invention relates to a luminaire, in particular to an LED bulb. Background technique

Traditional incandescent lamps usually consume a large amount of electricity and have a high temperature, which is not conducive to energy saving. With the development of LED technology, LED has been found to be one of the best illumination sources at present, and it has the advantages of high luminous brightness and long service life. However, the temperature of the LED light source is high. In order to improve the operating environment of the LED, the LED is usually attached to a heat sink, and the heat sink is used to dissipate the heat of the LED operation. The existing LED-based illumination lamp is a direct-illumination LED bulb, which usually consists of a heat sink, an LED light source patch attached to the end face of the cylindrical heat sink, a driver mounted on the other end of the heat sink, and The lamp cap is constructed, and the heat sink end to which the LED light source patch is pasted is mounted on the lamp cover. Since the LED light source and the lamp cap are mounted on both ends of the heat sink, the heat sink usually has a certain length, otherwise the heat dissipation requirement of the LED operation will not be achieved. Limited by the LED running heat requirements, the current LED bulb body is usually longer than the ordinary bulb, and can not be the same as the existing ordinary bulb. The LED bulb with a long lamp body is not only limited in scope of use. When installed on an existing lamp, the light bulb exposed outside the lampshade illuminates the human eye, causing discomfort and being screwed on the lamp holder. The LED bulb driver is exposed and appears to be uncoordinated and unattractive. Summary of the invention

The technical problem to be solved by the present invention is to make up for the drawbacks of the prior art, and to provide an LED bulb having a compact structure and a length comparable to that of an existing ordinary bulb.

The present invention is solved by the following method.

The LED bulb includes: a bubble body, a heat sink, an LED light source patch, a driver and a lamp holder electrically connected to the LED light source patch. The characteristics of this LED bulb are:

The heat sink is a cylindrical heat sink closed at one end;

The LED light source patch is pasted on the outer end surface of the closed end of the cylindrical heat sink; the driver and the lamp head electrically connected to the LED light source patch are mounted on the inner end surface of the sealed end of the cylindrical heat sink.

The technical problem of the present invention is solved by the following further technical solutions.

The cylindrical heat sink may be a circular cylinder, a square cylinder or a polygonal cylindrical radiator. The cylindrical heat sink is composed of an end cover and a cylindrical body, and an outer end surface of the end cover is provided with a platform for attaching the LED light source patch.

The cylindrical body of the cylindrical heat sink is surrounded by fins arranged at intervals.

The outer end surface of the cylindrical heat sink end cover surrounding the patch portion of the LED light source is provided with an annular groove into which the bubble body is fitted.

The cylindrical heat sink end cover is provided with a heat dissipation hole.

The outer end surface of the tubular heat sink end cover is further provided with a light guiding lens that covers the LED light source patch.

The cylindrical heat sink is made of a heat conductive metal material.

The cylindrical heat sink is an aluminum cylindrical heat sink.

The design principle of the LED light bulb of the invention is: installing the driver and the lamp head originally installed on the outer end of the heat sink into the cylindrical heat sink without changing the length of the heat sink and the heat dissipation area thereof, not only effectively shortening the axial direction of the bulb The length is achieved by the same purpose as the ordinary light bulb, and does not affect the heat dissipation function of the cylindrical heat sink at all. Under the above premise, this structural improvement not only hides the original exposed driver and lamp cap in the cylindrical heat sink, but also improves the appearance of the bulb, and the lamp cap and the barrel heat dissipating in the cylindrical heat sink. The space formed between the inner walls of the device is just the space for the screw head and the socket to be screwed together. When the LED bulb is screwed on the lamp holder, the tubular radiator sleeve of the LED bulb is placed outside the lamp holder, and the lamp holder can be completely covered, so that the LED bulb and the lamp holder are visually integrated into the appearance to achieve the decorative effect. .

The beneficial effects of the present invention compared to the prior art are:

The LED bulb is compact and reasonable in structure, and on the basis of ensuring its energy saving, high luminous efficiency and long life, its shape can be made exactly the same as the existing ordinary bulb, and can fully meet the existing standard chandeliers, crystal lamps, etc. Installation on the luminaire. And because the cylindrical heat sink can completely cover the connection between the lamp cap and the lamp holder, it is safer to use.

The specific structure of the LED bulb of the present invention is given in detail by the following figures and examples. DRAWINGS

1 is a schematic view of Embodiment 1 of an LED bulb of the present invention;

2 is a schematic exploded view of the LED bulb shown in FIG. 1;

Figure 3 is a schematic view showing the assembly structure of the LED bulb shown in Figure 1;

Figure 4 is a schematic view of Embodiment 2 of the LED bulb of the present invention. detailed description

Embodiment 1 : It can be clearly seen from Figs. 1 and 2 that the LED bulb is composed of a bubble body 1, an aluminum cylindrical heat sink 2, an LED light source patch 3, a light guiding lens 4, a driver 5, and a lamp cap 6.

The cylindrical heat sink 2 has a cylindrical structure and is composed of an aluminum end cap 21 and an aluminum cylinder 22, and an outer end surface of the aluminum end cap 21 is provided with a platform 23 for attaching the LED light source patch 3. The outer end surface of the aluminum end cap 21 surrounding the LED light source patch 3 is provided with an annular groove 24 into which the mouth of the foam body is fitted, and the aluminum end cap 21 is provided with a venting hole (not shown).

The assembly relationship of the components of the LED bulb is as follows:

The LED light source patch 3 is pasted on the outer end surface of the aluminum end cap 21 of the cylindrical heat sink 2; aluminum The outer end surface of the end cover 21 is further provided with a light guiding lens 4 which is covered on the LED light source patch 3. The first end of the bubble body is embedded in the annular groove 24 of the aluminum end cap 21 to form a light emitting head of the LED bulb.

The driver 5 and the lamp cap 6 are integrally connected, and the driver 5 is mounted on the inner end surface of the aluminum end cap 21 in the cylindrical heat sink 2.

The driver 5 is connected to the LED light source patch 3 in a line. Embodiment 2: As is clear from FIG. 4, the basic structure of the LED bulb is exactly the same as that of Embodiment 1, except that the cylindrical radiator 2 has a cylindrical structure, which is composed of an end cover 21 and aluminum. The aluminum ventilating cylinder 26 made of a heat sink circumference 25 is formed.

The aluminum venting cylinder 26, which is surrounded by the aluminum heat sink 25, has a better heat dissipation effect.

The above is a further detailed description of the present invention in connection with the specific preferred embodiments, and the specific embodiments of the present invention are not limited to the description. It will be apparent to those skilled in the art that <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; The scope of patent protection as determined by the book.

Claims

Claim

1. An LED light bulb comprising: a bubble body, a heat sink, an LED light source patch, a driver and a lamp head electrically connected to the LED light source chip, wherein:

The heat sink is a cylindrical heat sink closed at one end;

The LED light source patch is pasted on the outer end surface of the closed end of the cylindrical heat sink;

The driver and the lamp cap electrically connected to the LED light source patch are mounted on the inner end surface of the cylindrical heat sink sealing end.

2. The LED light bulb of claim 1 wherein:

The cylindrical heat sink may be a circular cylinder, a square cylinder or a polygonal cylindrical radiator.

The LED light bulb according to claim 1 or 2, wherein the cylindrical heat sink is composed of an end cover and a cylindrical body, and an outer end surface of the end cover is provided with a platform for attaching the LED light source patch.

4. The LED light bulb according to claim 3, wherein - the cylindrical body of the cylindrical heat sink is surrounded by spaced fins.

5. The LED light bulb of claim 4, wherein:

6. The LED light bulb of claim 5, wherein:

The cylindrical heat sink end cover is provided with a heat dissipation hole.

7. The LED light bulb of claim 6 wherein:

8. The LED light bulb of claim 7, wherein:

The cylindrical heat sink is made of a heat conductive metal material.

The LED light bulb according to claim 8, wherein the cylindrical heat sink is an aluminum cylindrical heat sink.