CN108061248B

CN108061248B - LED bulb

Info

Publication number: CN108061248B
Application number: CN201610976444.8A
Authority: CN
Inventors: 杨小明; 林祥华
Original assignee: Xiamen Eco Lighting Co Ltd
Current assignee: Xiamen Eco Lighting Co Ltd
Priority date: 2016-11-07
Filing date: 2016-11-07
Publication date: 2020-05-19
Anticipated expiration: 2036-11-07
Also published as: CN108061248A

Abstract

The invention discloses an LED bulb which comprises a lamp cup, an LED light source plate, an LED light source and at least one strip-shaped lens, wherein the LED light source is arranged on the LED light source plate, the LED light source plate is arranged on the lamp cup and is in thermal connection with the lamp cup, the strip-shaped lens is arranged above the LED light source, so that light emitted by the LED light source enters the bottom surface of the strip-shaped lens, the side wall of the strip-shaped lens respectively forms a reflecting surface and a light emitting surface, the reflecting surface is used for reflecting the light emitted by the LED light source towards the light emitting surface and enabling the light to be refracted through the light emitting surface and then emitted outwards, the strip-shaped lens is bent towards the direction far away from the center of the LED light source plate in the direction far away from the LED light source plate, and the projection of the reflecting surface of the strip-shaped lens on the LED light source plate. The LED bulb has the appearance and the light-emitting effect of an incandescent lamp, and is simple in manufacturing process.

Description

LED bulb

Technical Field

The invention relates to the field of LEDs, in particular to an LED bulb.

Background

The LED light source has the advantages of high luminous efficiency, low heat generation, power saving, long service life, etc., and has been widely used to gradually replace the conventional lighting lamps such as incandescent lamps and halogen lamps. However, the incandescent lamp has a long history, and the appearance and the luminous effect of the incandescent lamp are well-hearted and have high acceptance, so that the LED lamp simulating the appearance and the luminous effect of the incandescent lamp is popular.

The prior art commonly uses LED light bars and transparent glass bulbs to achieve the incandescent lamp effect. The scheme has the advantages of difficult assembly process, low production efficiency, weak light intensity at the center of a light distribution curve, uneven light distribution curve, high price of a finished product and unsatisfactory effect, thereby greatly limiting the popularization and the application of the finished product.

Disclosure of Invention

The invention provides a light distribution lens and an LED lamp using the same, which overcome the defects of an incandescent lamp imitating LED lamp in the prior art.

The technical scheme adopted by the invention for solving the technical problems is as follows:

an LED bulb comprises a lamp cup, an LED light source plate, an LED light source and at least one strip-shaped lens, wherein the LED light source and the at least one strip-shaped lens are arranged on the LED light source plate, the LED light source plate is arranged on the lamp cup and is in thermal connection with the lamp cup, the strip-shaped lens is arranged above the LED light source, so that light emitted by the LED light source enters the bottom surface of the strip-shaped lens, the side wall of the strip-shaped lens forms a reflecting surface and a light emitting surface respectively, the reflecting surface is used for reflecting the light emitted by the LED light source towards the light emitting surface and enabling the light to be refracted through the light emitting surface and then to be emitted outwards, the strip-shaped lens is bent towards the direction far away from the center of the LED light source plate in the direction far away from the LED light source plate, and the projection of the reflecting surface of the strip.

Compared with the prior art, the LED bulb is internally provided with the strip-shaped lens, light emitted by the LED light source enters the strip-shaped lens, the strip-shaped lens is provided with the reflecting surface and the light emitting surface, and the light can be emitted after being reflected by the reflecting surface and refracted by the light emitting surface of the strip-shaped lens in sequence when being transmitted from the bottom to the top of the strip-shaped lens, so that the strip-shaped light emitting effect is achieved, meanwhile, the bulb shell can be illuminated, and the LED bulb has the light emitting effect of a traditional incandescent lamp.

Drawings

FIG. 1 is an exploded perspective view of an LED light bulb according to one embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of the LED bulb of FIG. 1 after assembly;

fig. 3 is a schematic view of the light path of the LED bulb shown in fig. 2.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Referring to fig. 1 to 3, an LED light bulb of the present invention includes a lamp cup 10, an LED light source board 20, an LED light source 21 disposed on the LED light source board 20, and at least one strip lens 31, wherein the LED light source board 20 is disposed on the lamp cup 10 and thermally connected to the lamp cup 10, and the strip lens 31 is disposed above the LED light source 31 so that light emitted from the LED light source 31 enters a bottom surface of the strip lens 31.

The side walls of the strip lens 31 respectively form a light reflecting surface 311 and a light emitting surface 312, and the light reflecting surface 311 is used for reflecting the light emitted by the LED light source toward the light emitting surface 312 and making the light be refracted by the light emitting surface 312 and then emitted outward. Specifically, the light reflecting surface 311 is coated with a diffuse reflection coating. The light emitting surface 312 is a ring surface structure, the light emitting surface 312 and the light reflecting surface 311 are connected to form a sidewall of the strip lens 31, the light emitting surface 312 is used to expand the distribution angle of the light reflected by the light reflecting surface 311, as shown in fig. 3, the light can be transmitted from the bottom to the top of the strip lens 31, and the light is emitted from the light emitting surface 312 of the strip lens 31 to illuminate the top, sidewall and bottom of the bulb.

The LED bulb 100 of the present invention includes more than two strip-shaped lenses 31, the strip-shaped lenses 31 are annularly arranged around the center of the LED light source board 20, and the light reflecting surfaces 311 of the strip-shaped lenses 31 are disposed near the center of the LED light source board 20 to reflect the light emitted from the LED light source 21 toward the space surrounding the center of the LED light source board 20. In the present embodiment, an example with four stripe lenses 31 is described. The strip lens 31 is bent in a direction away from the LED light source board 20 toward a direction away from the center of the LED light source board 20, and a projection of the light reflecting surface 311 of the strip lens 31 on the LED light source board 20 covers a part of the LED light source on the LED light source board 20. The strip-shaped lens 31 is bent, so that light rays can be refracted towards the bottom, the light emitting angle is enlarged, and a large-angle light emitting effect is formed.

The LED light source plate comprises an LED light source plate 20, and is characterized by further comprising a middle lens 32, wherein the middle lens 32 is arranged corresponding to the LED light source 21 in the middle of the LED light source plate 20, and the middle lens 32 is used for refracting light emitted by the middle LED light source 21 towards the bottom of the strip-shaped lens 31. The middle lens 32 is integrally connected to the bottom of the strip lens 31, the top of the middle lens 32 is an umbrella-shaped light reflecting surface 321, and the umbrella-shaped light reflecting surface 321 reflects light toward the bottom of the strip lens 31, which is helpful for the light to irradiate toward the bottom of the bulb shell and supplement the light irradiating the bottom of the bulb shell.

The LED light bulb 100 of the present invention further includes a light bulb shell 40, the light bulb shell 40 is a shell structure with an open bottom, the light bulb shell 40 covers the light cup 10 and houses the LED light source board 20 of the strip lens 31, and the light bulb shell 40 is a transparent or semitransparent structure. The outer diameter of the middle portion of the bulb shell 40 is larger than the top and bottom portions of the bulb shell 40, and the height of the strip lens 31 in the bulb shell 40 is higher than the height of the middle portion of the bulb shell 40.

The strip lens 31 is arranged in the LED bulb, light emitted by the LED light source 21 enters the strip lens 31, the strip lens 31 is provided with the reflecting surface 311 and the light emitting surface 312, and the light can be emitted after being reflected by the reflecting surface 311 and refracted by the light emitting surface 312 of the strip lens 31 when being transmitted from the bottom to the top of the strip lens 31, so that the strip light emitting effect is realized, meanwhile, the bulb shell can be illuminated, and the light emitting effect of the traditional incandescent lamp is realized.

The above embodiments are only used to further illustrate the LED light bulb of the present invention, but the present invention is not limited to the embodiments, and any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention fall within the protection scope of the technical solution of the present invention.

Claims

1. An LED bulb comprises a lamp cup, an LED light source plate, an LED light source and at least one strip-shaped lens, wherein the LED light source plate is arranged on the lamp cup and is in thermal connection with the lamp cup, the strip-shaped lens is arranged above the LED light source, so that light emitted by the LED light source enters the bottom surface of the strip-shaped lens, the LED bulb is characterized in that the side wall of the strip-shaped lens forms a reflecting surface and a light emitting surface respectively, the reflecting surface is used for reflecting the light emitted by the LED light source towards the light emitting surface and enabling the light to be refracted through the light emitting surface and then to be emitted outwards, the strip-shaped lens is bent towards the direction far away from the center of the LED light source plate in the direction far away from the LED light source plate, and the projection of the reflecting surface of the strip-shaped lens on the LED light source plate covers part of the LED light source on the LED.

2. The LED bulb of claim 1, wherein: the LED light source board comprises more than two strip-shaped lenses, wherein the strip-shaped lenses are annularly arranged around the center of the LED light source board, and the light reflecting surfaces of the strip-shaped lenses are arranged close to the center of the LED light source board so as to reflect light emitted by the LED light source towards the space around the center of the LED light source board.

3. The LED bulb of claim 2, wherein: the light-emitting surface is of a ring surface structure, the light-emitting surface and the reflecting surface are connected to form the side wall of the strip lens, and the light-emitting surface is used for expanding the distribution angle of the light reflected by the reflecting surface.

4. The LED bulb of claim 1, wherein: the LED light source plate is characterized by further comprising a bulb shell, the bulb shell is of a shell structure with an opening in the bottom, the bulb shell covers the lamp cup and accommodates the LED light source plate of the strip-shaped lens, and the bulb shell is of a transparent or semitransparent structure.

5. The LED bulb of claim 4, wherein: the outer diameter of the middle part of the bulb shell is larger than the top and the bottom of the bulb shell, and the height of the strip-shaped lens in the bulb shell is higher than the height of the middle part of the bulb shell.

6. The LED bulb of claim 1, wherein: the reflective surface is coated with a diffuse reflective coating.

7. The LED bulb of claim 1, wherein: the LED light source plate is characterized by further comprising a middle lens, the middle lens corresponds to the LED light source in the middle of the LED light source plate, and the middle lens is used for refracting light emitted by the middle LED light source towards the bottom of the strip-shaped lens.

8. The LED bulb of claim 7, wherein: the middle lens and the bottom of the strip lens are integrally connected, the top of the middle lens is an umbrella-shaped light reflecting surface, and the umbrella-shaped light reflecting surface reflects light towards the bottom of the strip lens.