CN206505945U - A new type of LED light - Google Patents

Abstract

The utility model provides a novel LED lamp, comprising an LED light-emitting chip and a heat-conducting package, wherein the heat-conducting package is provided with a package cavity, the LED light-emitting chip is arranged in the package cavity, a heat-conducting transparent package glue without fluorescent material is filled between the LED light-emitting chip and the heat-conducting package, the heat-conducting package is provided with a light guide for covering the LED light-emitting chip, the light guide is a fluorescent lampshade and/or a protective lampshade, and the utility model removes the fluorescent material from the package glue, thereby avoiding that the heat generated by the LED light-emitting chip during electro-optical conversion is covered by the fluorescent material on the package glue, thereby improving the heat dissipation performance and service life of the LED light-emitting chip.

Description

A new type of LED lamp

【Technical field】

The utility model relates to the field of lighting fixtures, in particular to a novel LED lamp.

【Background technique】

LED light source is a semiconductor light-emitting device based on the principle of P-N junction electroluminescence. It has the advantages of high electro-optical conversion efficiency, long service life, environmental protection and energy saving, and small size. It has the advantages of high efficiency and energy saving, so it has been applied in various lighting fields and has replaced traditional lighting sources. LED light sources are usually composed of single-color LED chips under the excitation of an electric field, which can produce inherent light colors or a mixture of multiple LED chips. The color of light emitted, such as coating a specific phosphor encapsulant on the LED chip will obtain the required light color, because the LED chip is coated with a specific phosphor encapsulant to obtain the required light color packaging method Simple and low cost, it is widely used in the LED lighting industry. For example, gallium nitride (GaN) is used to generate light, which generally emits blue light in a fixed band of the electromagnetic spectrum, and yellow YAG phosphor packaging glue is coated on the LED chip. Or yellow TAG phosphor encapsulation glue to excite blue light to obtain white light for lighting and other purposes, such as red light chip, yellow light chip, yellow-green light chip, blue light chip, green light chip emitting in the original band range, on its LED chip Potting transparent encapsulant or phosphor encapsulant to make them emit their original light colors. The usual method of actual production of LED lighting is to select the LED light source according to the requirements of color temperature and illuminance, and in order not to let the LED light source produce glare And to protect the LED light source, a lampshade is usually added above the LED lamp board. The LED light source shines on the lampshade and passes through the lampshade to make the light softer and the protection of the lamps is safer.

Wafer level packaging technology (Wafer levelpackage, WLP) was invented and put into industrial production. This technology can effectively improve packaging quality and efficiency, and reduce packaging cost. There is always also a temperature influence, which affects the lifetime of the LED light source.

【Content of utility model】

The technical problem to be solved by the utility model is to provide a new type of LED lamp with good heat dissipation and long service life.

The purpose of this utility model is achieved in that:

A new type of LED lamp, comprising an LED light-emitting chip and a heat-conducting package, the heat-conducting package is provided with a package cavity, the LED light-emitting chip is arranged in the package cavity, and the gap between the LED light-emitting chip and the heat-conducting package is The heat-conducting package is filled with transparent heat-conducting and non-fluorescent material, and the heat-conducting package is provided with a light guide for covering the LED light-emitting chip.

The fluorescent material is removed from the encapsulation glue, which prevents the heat emitted by the LED light-emitting chip from being covered by the fluorescent material on the encapsulation glue, thereby improving the heat dissipation performance and service life of the LED light-emitting chip.

In the above-mentioned novel LED lamp, the light guide includes a fluorescent lampshade, a first support plate is provided at the bottom of the heat-conducting package, and the fluorescent lampshade is arranged on the first support plate and conducts the heat conduction The package is covered inside, and the fluorescent lamp cover can further refract and transmit the light emitted by the LED light-emitting chip.

In the above-mentioned novel LED lamp, the light guide includes a protective lampshade added with fluorescent material, the bottom of the heat-conducting package is provided with a second support plate, and the bottom of the second support plate is fixed with a lamp holder, The protective lampshade is arranged on the lamp holder and covers the heat-conducting package inside, the light emitted by the LED light-emitting chip radiates to the protective lampshade, and excites the fluorescent material to emit the required light color.

In the above new type of LED lamp, the light guide also includes a protective lampshade, the bottom of the first support plate is provided with a second support plate, the bottom of the second support plate is fixed with a lamp holder, and the protection The lampshade is arranged on the lamp base and covers the fluorescent lampshade inside, and the protective lampshade further refracts and transmits the light refracted and transmitted by the fluorescent lampshade.

A new type of LED lamp as described above, fluorescent material is added to the fluorescent lampshade and/or protective lampshade, when the light emitted by the LED light-emitting chip radiates onto the fluorescent lampshade and/or protective lampshade, the fluorescent material on it is excited , so as to emit the desired light color.

According to a new type of LED lamp as described above, the fluorescent lampshade includes a cover body, the bottom of the cover body is provided with a connecting part, and the cover body includes a spherical arc surface provided on the outer surface of the cover body and a The fluorescent material is added to the planar part and inclined part of the surface of the body, and the light emitted by the LED light-emitting chip is refracted and transmitted on the planar part, inclined part and spherical arcuate part, expanding the light-emitting angle.

In the above-mentioned novel LED lamp, the protective lampshade is spherical, and the light emitted by the LED light-emitting chip is refracted and transmitted on the spherical protective lampshade, thereby enlarging the luminous angle.

【Description of drawings】

Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described in further detail, wherein:

Fig. 1 is the schematic cross-sectional view of the third embodiment of the utility model;

Fig. 2 is a schematic cross-sectional view of the first embodiment of the utility model;

3 is a schematic cross-sectional view of a second embodiment of the present invention;

Fig. 4 is the sectional schematic diagram of LED chip described in the utility model and described heat-conducting package assembly;

Fig. 5 is a schematic cross-sectional view of the fluorescent lampshade of the present invention;

Fig. 6 is a schematic cross-sectional view of the protective lampshade described in the present invention

【detailed description】

The first embodiment of a novel LED lamp of the present utility model is shown in FIG. Set in the package cavity 21, the bottom of the LED light-emitting chip 1 is provided with a terminal post 11, and the package cavity 21 is provided with a support contact 22 electrically connected to the terminal post 11, and the space between the LED light-emitting chip 1 and the heat-conducting package 2 is filled with Heat-conducting transparent encapsulant 5 without fluorescent material. The heat-conducting package 2 is provided with a light guide 9 for covering the LED light-emitting chip 1. The light guide 9 includes a fluorescent lamp cover 3 added with fluorescent material. The bottom of the heat-conducting package 2 is A first support plate 6 is provided, and the fluorescent lamp cover 3 is arranged on the first support plate 6 and covers the heat-conducting package 2 therein. As shown in FIG. 5 , the fluorescent lamp cover 3 includes a cover body 31, and Connecting portion (32), the cover body 31 includes a spherical arc surface portion 311 provided on the outer surface of the cover body 31 and a planar portion 312 and an inclined portion 313 arranged on the inner surface of the cover body 31, and the fluorescent material is added to the planar portion 312 and the inclined portion 313 superior.

The second embodiment of a new type of LED lamp of the present utility model is shown in Figure 3. The main difference between it and the first embodiment is that the light guide member 9 includes a protective lampshade 4 added with a fluorescent material instead of a fluorescent lampshade 3, and conducts heat The bottom of the package 2 is provided with a second support plate 7, the bottom of the second support plate 7 is fixed with a lamp holder 8, and the protective lampshade 4 is arranged on the lamp holder 8 and covers the heat-conducting package 2 therein, as shown in FIG. 6 , the protective lampshade 4 is spherical.

The third embodiment of a new LED lamp of the present utility model is shown in Fig. 1, and its main difference from the first embodiment and the second embodiment is that the light guide 9 includes a fluorescent lampshade 3 and a protective lampshade 4 at the same time, and the first The support plate 6 is arranged on the second support plate 7 , the protective lampshade 4 is arranged on the lamp holder 8 and covers the fluorescent lampshade 3 therein, and fluorescent material is added on the fluorescent lampshade 3 and/or the protective lampshade 4 .

The fluorescent material in the above three embodiments is yellow, green or red fluorescent powder of sulfide, sulfur oxide, nitride, or nitrogen oxide.

Taking the case where fluorescent material is added to both the fluorescent lampshade 3 and the protective lampshade 4 in the third embodiment of the present utility model as an example, when the utility model is used, the light emitted by the LED light-emitting chip 1 passes through the encapsulating glue 5 through refraction and It transmits and radiates onto the fluorescent lampshade 3, because the LED light-emitting chip 1 is placed in the packaging cavity 21, so the light-emitting angle at this time is only 180°, and its light color does not change, and the light irradiates onto the fluorescent lampshade 3 to excite fluorescence The material emits light, and the light color changes at this time. For example, what the LED light-emitting chip 1 emits is blue light, and the fluorescent material on the fluorescent lamp cover 3 is yellow phosphor powder, and the light color of the light emitted further through the fluorescent lamp cover 3 is white light, and , through the further refraction and transmission of the flat part 312, inclined part 313 and spherical arc part 311 on the fluorescent lamp cover 3, the luminous angle can be greater than 180°, and the light further emitted by the fluorescent lamp cover 3 is then radiated to the protective lamp cover 4, so that The fluorescent material on the protective lampshade 4 is excited to further improve the luminance. Moreover, because the protective lampshade 4 is spherical, the light is further refracted and transmitted on the protective lampshade 4, and the luminous angle is further expanded, thus without affecting Under the premise of the heat dissipation and life of the LED light-emitting chip 1, the luminous angle is large enough, and the luminance is bright enough, and the fluorescent lampshade 3 and/or the protective lampshade 4 of the replacement fluorescent material of different colors can make the light color of the light emitted changes to obtain the desired luminous color.

Claims (7)

1. A novel LED lamp, characterized in that it comprises an LED light-emitting chip (1) and a heat-conducting package (2), the heat-conducting package (2) is provided with a package cavity (21), and the LED light-emitting chip (1) ) is set in the packaging cavity (21), the heat-conducting transparent packaging glue (5) without fluorescent material is filled between the LED light-emitting chip (1) and the heat-conducting package (2), and the heat-conducting package ( 2) A light guide (9) for covering the LED light-emitting chip (1) is provided on it. 2. A new type of LED lamp according to claim 1, characterized in that the light guide (9) includes a fluorescent lampshade (3), and the bottom of the heat conducting package (2) is provided with a first support plate (6 ), the fluorescent lampshade (3) is arranged on the first support plate (6) and covers the heat-conducting package (2) therein. 3. A new type of LED lamp according to claim 1, characterized in that the light guide (9) includes a protective lampshade (4) added with fluorescent material, and the bottom of the heat conducting package (2) is provided with a second Two support plates (7), the bottom of the second support plate (7) is fixed with a lamp holder (8), the protective lampshade (4) is arranged on the lamp holder (8) and the heat conducting package (2) cover in it. 4. A new type of LED lamp according to claim 2, characterized in that the light guide (9) also includes a protective lampshade (4), and the bottom of the first support plate (6) is provided with a second support plate (7), the bottom of the second support plate (7) is fixed with a lamp holder (8), the protective lampshade (4) is arranged on the lamp holder (8) and covers the fluorescent lampshade (3) in it. 5. A new type of LED lamp according to claim 4, characterized in that fluorescent materials are added to the fluorescent lampshade (3) and/or the protective lampshade (4). 6. A new type of LED lamp according to any one of claims 2, 4 or 5, characterized in that the fluorescent lampshade (3) includes a cover (31), and the bottom of the cover (31) is provided with a connecting part (32), the cover (31) includes a spherical arc surface (311) on the outer surface of the cover (31) and a flat surface (312) on the inner surface of the cover (31) and The slope part (313), the fluorescent material is added to the plane part (312) and the slope part (313). 7. A new type of LED lamp according to any one of claims 3, 4 or 5, characterized in that the protective lampshade (4) is spherical.