CN104948944B - Wide-angle LED lamp - Google Patents

Abstract

A wide-angle LED lamp comprises a bulb shell, a lens, a substrate, an LED light source arranged on the substrate and a lamp holder body, the substrate is fixed on the top of the lamp holder body, the lens is arranged above the LED light source, the bulb shell is arranged on the top of the lamp holder body and accommodates the lens, the lens is an annular structure with a through hole in the middle, the lens comprises a bottom surface, a side surface connected with the outer side of the bottom surface and positioned above the bottom surface, and a reflecting surface respectively connected with the bottom surface and the side surface, the bottom surface is a ring surface structure, the middle part of the bottom surface protrudes towards the direction close to the substrate to form a protruding part, the LED light source is arranged in the projection range of the protruding part on the substrate, the reflecting surface is positioned above the LED light source and covers the LED light source in the orthographic projection direction, and the reflecting surface is arranged corresponding to the bottom surface to reflect a large part of light rays towards the side surface. The wide-angle LED lamp has the advantages of omnibearing uniform light emission and simple structure.

Description

Wide Angle LED Light

technical field

The invention relates to the lighting field, in particular to a wide-angle LED lamp.

Background technique

In recent years, due to the rapid development of the LED industry, LED lamps have gradually replaced traditional lighting fixtures. For LED bulbs for indoor lighting, the basic requirements for their light intensity distribution and brightness are: the light bulb must not only have omnidirectional light, but also the light intensity distribution should be as uniform as possible to avoid uneven brightness and darkness, otherwise users will feel uncomfortable. repressed. In order to regulate the production of LED bulb lamps, Energy Star of the United States has released new standards for LED lighting, which stipulates the light intensity distribution of omnidirectional LEDs (also known as non-directional lights). In this regulation, when the directly below the bulb is specified as 0°, within the range of 135° on both sides, its luminous flux must reach at least 20% of the total luminous flux of the lamp, and within the range of 135°-180°, its luminous flux At least 5% of the total luminous flux of the lamp must be achieved. That is to say, the luminous intensity should be large and evenly distributed in the 270° range of the lower area of the bulb side, and the luminous flux should not be too small in the 90° range of the top. As we all know, due to the package, the LED light source has a maximum luminous surface of 180°, narrow luminous surface, and cannot achieve omni-directional light emission. In the existing LED bulb lamps, in order to realize large-angle light emission, most of the LED light sources are arranged on the three-dimensional protrusions in the bulb lamp. For example, the Chinese invention patent application with the application publication date of August 18, 2010 and the application number 201010146167.0 discloses an LED bulb lamp that can improve luminous flux. The LED modules are fixed on multiple slopes, although the light angle Bigger, but the luminous flux at the end of the bulb lamp is small, which cannot meet the requirements of omni-directional light emission, and at the same time, it has the disadvantages of complex structure and difficult production.

Contents of the invention

In view of this, it is necessary to provide a wide-angle LED lamp that emits light uniformly in all directions and has a simple structure.

The technical solution adopted in the present invention is: a wide-angle LED lamp, including a bulb shell, a lens, a substrate, an LED light source and a lamp head body arranged on the substrate, the substrate is fixed on the top of the lamp head body, and the lens is arranged on the lamp head body. Above the LED light source, the bulb cover is set on the top of the lamp body and accommodates the lens. The lens is an annular structure with a through hole in the middle. The lens includes a bottom surface connected to the outside of the bottom surface and is located above the bottom surface. The side surface and the reflective surface connecting the bottom surface and the side surface respectively, the bottom surface has a ring structure, the middle part of the bottom surface protrudes toward the direction close to the substrate to form a protrusion, and the LED light source is arranged on the protrusion. Within the scope of the projection on the substrate, the reflective surface is located above the LED light source and covers the LED light source in the orthographic projection direction, and the reflective surface should be set on the bottom surface to reflect most of the light toward the side.

Compared with the prior art, the wide-angle LED lamp of the present invention is provided with the bottom surface, reflective surface and side surfaces of the lens, the bottom surface is provided with protrusions, and these LED light sources are arranged on the bottom surface of the protrusions on the substrate Within the projection range of the LED light source, most of the light emitted by these LED light sources is incident on the bottom surface, or refracted from the reflective surface to the top of the bulb shell, or refracted to the middle and top of the reflective surface and then reflected to the side surface through the side surface. Refracted to the side wall and bottom of the bulb shell, the wide-angle LED lamp achieves the effect of uniform lighting in all directions. Since the LED module does not need to be fixed on multiple inclined surfaces, the wide-angle LED lamp has a simple structure. advantage.

Description of drawings

Fig. 1 is a three-dimensional exploded view of a wide-angle LED lamp according to the first embodiment of the present invention.

Fig. 2 is a cross-sectional view of the assembled wide-angle LED lamp shown in Fig. 1 .

Fig. 3 is a cross-sectional view of the lens in the wide-angle LED lamp shown in Fig. 1 .

Fig. 4 is a schematic diagram of the optical path of the lens in the wide-angle LED lamp shown in Fig. 1 .

Explanation of reference signs:

100 wide-angle LED light 10 bulb shell 20 lens

30 Base plate 40 Lamp body 21 Bottom surface

22 reflective surface 23 side 24 through hole

25 Connecting part 26 Light guide 27 Fixing part

211 Protruding part 271 Light exit section 31 LED light source

41 Boss

detailed description

The present invention is elaborated below by specific embodiment:

1 is an exploded perspective view of a wide-angle LED lamp 100 according to the first embodiment of the present invention. The wide-angle LED lamp 100 includes a bulb housing 10, a lens 20, a substrate 30, an LED light source 31 disposed on the substrate 30, and a lamp body 40. , the substrate 30 is fixed on the top of the lamp body 40, the lens 20 is arranged above the LED light sources 31, the bulb case 10 is covered on the top of the lamp body 40 and accommodates the lens 20, the bulb case 10 is transparent Or a translucent over-hemispherical bulb.

Please refer to FIG. 1 , the substrate 30 is a planar structure, the top of the lamp body 40 is provided with a boss 41 , and the boss 41 protrudes into the bulb housing 10 , and the substrate 30 is disposed on the top surface of the boss 41 . In this way, the position of the base plate 30 will be higher than the top of the lamp head body 40 .

Please refer to FIGS. 1 to 3 , the lens 20 is an annular structure with a through hole 24 in the middle, and the lens 20 includes a bottom surface 21, a side surface 23 connected to the outside of the bottom surface 21 and positioned above the bottom surface 21, and connected to the bottom surface respectively. 21 and the reflective surface 22 at the bottom of the side 23 (as shown in FIG. 2 ). The bottom surface 21 has a ring structure, and a middle portion of the bottom surface 21 protrudes toward a direction close to the substrate 30 to form a protruding portion 211 . The protruding portion 211 is an annular structure. The LED light sources 31 are arranged within the range of the projection of the protrusion 211 on the substrate 30 , that is to say, they are disposed toward the inside of the ring-shaped protrusion 211 (as shown in FIG. 2 ). Most of the light emitted by these LED light sources 31 directly hits the bottom surface 21 . The reflective surface 22 is located above the LED light sources 31 and covers the LED light sources 31 in the orthographic projection direction (as shown in FIG. 2 ). The central portion of the reflective surface 22 protrudes obliquely toward the direction away from the bottom surface 21 to form an arc surface structure (as shown in FIG. 2 ). The reflective surface 22 is disposed corresponding to the bottom surface 21 to reflect most of the light toward the side surface 23 . The top of the side 23 is substantially perpendicular to the substrate 30, and the bottom of the side 23 protrudes toward the bottom of the bulb housing 10 to form an arc (as shown in FIG. 2 ), so that the side 23 and the reflective surface 22 form a convex lens. structure. The side surface 23 is used for refracting the light reflected by the reflective surface 22 towards the bottom of the bulb shell 10 to illuminate the bottom of the bulb shell 10 .

Please refer to FIG. 2 to FIG. 3 , in this embodiment, the lens 20 further includes a connecting portion 25, which is a transparent or translucent housing structure, and the connecting portion 25 is integrally connected to the through hole 24 of the lens 20. Inside. A central portion of the connecting portion 25 protrudes away from the substrate 30 . The connecting portion 25 can refract part of the light emitted by the LED light sources 31 to the top of the bulb shell 10 .

Please refer to FIG. 2 to FIG. 3 , in this embodiment, the lens 20 further includes a light guide 26 , and the light guide 26 is a cylindrical transparent or translucent structure. The light guide 26 is integrally connected to the bottom of the connecting portion 25 and extends toward the substrate 40 (as shown in FIG. 2 ). These LED light sources 31 are arranged around the light guide 26 on the periphery of the light guide 26, and part of the light emitted by these LED light sources 31 can be refracted to the connecting portion 25 through the light guide 26, so that more light is directed toward the light guide 26. The bottom of the bulb envelope 10 is refracted.

Please refer to FIG. 2 to FIG. 3 , in this embodiment, the lens 20 further includes a fixing part 27 , and the fixing part 27 is a cylindrical transparent or translucent shell structure. The outer surface of the fixing member 27 protrudes outwards and is provided with a multi-circle ring-shaped light emitting structure. These light exit structures can make more light exit from the fixing member 27 . One end of the fixing member 27 is connected to the outside of the bottom surface 21 of the lens 20 , and the other end of the fixing member 27 is fixed on the lamp body 40 . The fixing member 27 has a light emitting section 271 protruding away from the LED light sources 31 near the bottom surface 21 of the lens 20 . Part of the light emitted by the LED light sources 31 is refracted to the side wall of the bulb housing 10 through the light emitting section 271 . The fixing member 27 accommodates the boss 41 .

Please refer to FIG. 2 and FIG. 4 . FIG. 4 is a schematic diagram of the optical path of the lens 20 in the wide-angle LED lamp 100 of this embodiment. When the wide-angle LED lamp 100 is working, most of the light emitted by the LED light sources 31 passes through the bottom surface 21 of the lens 20 and is refracted onto the reflective surface 22 of the lens. Part of the light near the middle of the lens 20 will be refracted by the reflective surface 22 towards the top of the bulb housing 10; The other part of light is refracted to the side wall and bottom of the bulb housing 10 . It is worth mentioning that the protruding portion 211 of the bottom surface 21 is used to refract the light toward the top of the reflective surface 22; the reflective surface 22 and the side surface 23 form a convex lens structure, so that reflection More of the light can hit the bottom of the bulb shell 10; in addition, the connecting part 25 refracts part of the light to the top of the bulb shell 10 to increase the brightness of the top of the bulb shell 10, and the light-emitting section 271 of the fixing member 27 Refracting part of the light to the sidewall of the bulb housing 10 increases the brightness of the sidewall of the bulb housing 10 . In this way, the top, side walls and bottom of the bulb housing 10 are evenly illuminated.

In summary, the wide-angle LED lamp 100 of the present invention is provided with the bottom surface 21, the reflective surface 22 and the side surface 23 of the lens 20, the bottom surface 21 is provided with a protrusion 211, and these LED light sources 31 are provided on the bottom surface 21. Within the projection range of the protruding portion 211 on the substrate 30, most of the light emitted by the LED light sources 31 is incident on the bottom surface 21, or refracted from the reflective surface 22 to the top of the bulb housing 10, or refracted to the reflective surface The middle and top of 22 are reflected onto the side 23 and refracted to the side wall and bottom of the bulb housing 10 through the side 23, so that the wide-angle LED lamp 100 can achieve an all-round uniform light effect. The groups are fixed on multiple slopes, so that the wide-angle LED lamp 100 also has the advantage of simple structure.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the present invention. within the scope of protection.

Claims (9)

1. a kind of extensive angle LED, including bulb housing, lens, substrate, LED light source on the substrate and body are set, should Substrate is fixed on the top of the body, and the lens cover at the body located at the top of the LED light source, the bulb housing Top simultaneously houses the lens, it is characterised in that：The lens are the circulus that middle part is provided with through hole, and the lens include bottom surface, connect Connect the outside and the side above the bottom surface of the bottom surface and connect the bottom surface and the reflecting surface of the side, the bottom surface respectively For annuli arrangement, the middle part of the bottom surface protrudes out to form protuberance towards the direction near the substrate, and the LED light source is arranged on this Within the scope of protuberance projection on the substrate, the reflecting surface is located at LED light source top and on orthographic projection direction Cover the LED light source, the reflecting surface to should bottom surface arrange with by most of light towards the offside reflection.

2. extensive angle LED according to claim 1, it is characterised in that：Also include connecting portion, the connecting portion for transparent or Translucent shell structure, the connecting portion is integrally attached in the through hole of the lens, and the substrate is directed away from the middle part of the connecting portion Direction it is raised.

3. extensive angle LED according to claim 2, it is characterised in that：Also include light guide, the light guide is cylindrical shape Transparent or semitransparent structure, the light guide is integrally attached to the bottom of the connecting portion and extends towards the substrate, the LED light source The periphery of the light guide is arranged on around the light guide.

4. extensive angle LED according to claim 1, it is characterised in that：The substrate be planar structure, the top of the body Portion is provided with boss, and the substrate is arranged at the top surface of the boss, and the boss is projected in the bulb housing.

5. the extensive angle LED according to any one of claim 1-4, it is characterised in that：Also include fixture, this is fixed Part is cylindric transparent or semitransparent shell structure, and one end of the fixture is connected to the outside of the lens base, the fixture The other end be fixed on the body, the fixture is provided with convex away from the LED light source direction near the lens base That what is stretched goes out light section.

6. extensive angle LED according to claim 5, it is characterised in that：Outwardly protruding out for the fixture is provided with Multi-turn annular light emitting structures.

7. extensive angle LED according to claim 1, it is characterised in that：The bottom surface is directed away from the middle part of the reflecting surface Direction inclined protrude out to form globoidal structure.

8. extensive angle LED according to claim 1, it is characterised in that：The top of the side is substantially vertical with the substrate Arrange, the bottom of the side protrudes out to form cambered surface towards the bottom of the bulb housing.

9. extensive angle LED according to claim 1, it is characterised in that：The bulb housing is transparent or semitransparent more than half Ball cell-shell.