CN205299277U - LED spotlight - Google Patents

Abstract

An LED spotlight, comprising a lamp holder, a lamp cup, an LED light source board and a light-transmitting cover, the LED light source board is set in the light cup, the LED light source board is provided with an LED light source, and the light-transmitting cover is set on the lamp At the top opening of the cup, the light transmission cover includes a light incident surface on the bottom surface and a light exit surface on the top surface, the light incident surface is an arc structure protruding away from the LED light source, and the light incident surface surrounds the light transmission The central axis of the cover is provided with a plurality of concentric annular tooth grooves, the annular tooth grooves include a vertical surface and an inclined surface, and the inclined surface is used for refracting light toward a direction parallel to the central axis of the LED light source. The LED spotlight of the utility model has a simple structure and can realize light emission at a small angle.

Description

LED spotlight

technical field

The utility model relates to the field of LED lighting, in particular to an LED spotlight.

Background technique

LED lighting has the advantages of less energy consumption, no pollution, no tribute, no screen flicker, easy control, dimmable, long service life, etc., and is widely used because of its many advantages.

In the current optical design, the LED point light source can meet the requirements of a certain small-angle light output through the lens, the reflector or the combination of the two, and realize the required light distribution characteristics, light output angle, spot shape and illuminance requirements. However, due to the packaging characteristics of the integrated light source COB, the surface light source emits light and has a large size. When performing optical design, the distance from the reflection or refraction interface of the lens or reflector cannot be ignored, and it is difficult to approximate it as a point light source, so it is difficult to do. to very small beam angles. At present, in the application of LED spotlights, most of the matching uses need to install lenses in front of the COB light source. Usually, lenses are installed on the LED point light sources. The lenses play the role of amplifying or concentrating light. Now the most commonly used on the market The lens is a conical lens, a convex lens, etc. Although it can achieve the effect of concentrating light, it needs to use a lot of materials, resulting in a thicker overall lens thickness, thus occupying a lot of space.

Utility model content

The purpose of the utility model is to overcome the disadvantages of the prior art and provide an LED spotlight with a simple structure and capable of emitting light at a small angle.

The purpose of this utility model is achieved through the following technical solutions: an LED spotlight, including a lamp cap, a lamp cup, an LED light source board and a light-transmitting cover, the LED light source board is arranged in the lamp cup, and the LED light source board is provided with LED light source, the light-transmitting cover is arranged at the top opening of the lamp cup, the light-transmitting cover includes a light incident surface on the bottom surface and a light exit surface on the top surface, and the light incident surface is protruding away from the LED light source Arc surface structure, the light incident surface is provided with a plurality of concentric annular tooth grooves around the central axis of the light-transmitting cover, and the annular tooth grooves include a vertical surface and an inclined surface, and the inclined surface is used to direct the light toward the direction parallel to the The direction of the central axis of the LED light source is refracted.

Preferably, the angle formed by the vertical surface and the inclined surface decreases outwardly from the central axis of the light-transmitting cover.

Preferably, the angle formed by the vertical surface and the inclined surface is an acute angle.

Preferably, the light-emitting surface is an arc-shaped structure protruding outward away from the LED light source.

Preferably, a central light incident surface is provided in the middle of the light incident surface, the central light incident surface is an arcuate structure protruding toward the LED light source, and the central light incident surface and the light exit surface form a convex lens structure.

Preferably, the LED light source board is a planar structure, and the LED light source forms a ring structure around the center of the LED light source board.

Preferably, the inner wall of the lamp cup is provided with a flange, and the LED light source board is arranged on the flange and thermally connected with the lamp cup.

The utility model has the following advantages:

1. By setting the annular tooth groove on the light-transmitting cover, the light emitted by the LED light source will be refracted towards the direction parallel to the central axis of these LED light sources through the ring-shaped tooth groove, and secondary refraction will occur on the light-emitting surface of the light-transmitting cover , forming collimated light, the light emitted by these LED light sources is parallel to the central axis of the light transmission cover or at a small angle, so that the light output effect at a small angle is realized, and a small angle can be realized through the light transmission cover. Angled light makes the structure of the whole lamp simpler.

Description of drawings

Fig. 1 is an exploded schematic view of the first embodiment of the LED spotlight of the present invention;

Fig. 2 is a schematic cross-sectional view of the assembled first embodiment of the LED spotlight of the present invention;

detailed description

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail.

Embodiment one:

Please refer to Fig. 1, the LED spotlight described in the utility model includes a lamp holder 40, a lamp cup 30, an LED light source board 20 and a light-transmitting cover 10, the LED light source board 20 is arranged in the lamp cup 30, and the LED light source board 20 An LED light source 21 is disposed on it, and the light-transmitting cover 10 is disposed on the top opening of the lamp cup 30 .

Please refer to FIG. 1 , in this embodiment, the LED light source board 20 is a planar structure, and the LED light sources 21 form a ring structure around the center of the LED light source board 20 . The inner wall of the lamp cup 30 is provided with a flange 31 , the LED light source board 20 is disposed on the flange 31 and thermally connected with the lamp cup 30 .

Please refer to FIG. 2 , the translucent cover 10 includes a light incident surface 11 on the bottom surface and a light exit surface 12 on the top surface. A plurality of concentric annular tooth grooves 112 are disposed around the central axis of the transparent cover 10 . The annular slots 112 include a vertical surface 1121 and an inclined surface 1122 , and the inclined surface 1122 is used for refracting light toward a direction parallel to the central axis of the LED light sources 21 . The angle formed by the vertical surface 1121 and the inclined surface 1122 is an acute angle. The angle formed by the vertical surface 1121 and the inclined surface 1122 gradually decreases from the center of the transparent cover 10 to the outside. Preferably, the angle formed by the vertical surface 1121 and the inclined surface 1122 decreases from the center of the light-transmitting cover 10 outward to form an arithmetic sequence. In addition, a central light incident surface 113 is provided in the middle of the light incident surface 11, and the central light incident surface 113 is an arc surface structure protruding toward the LED light sources 21. The central light incident surface 113 and the light exit surface 12 form a convex lens. structure, so as to refract the light toward the central axis close to the light-transmitting cover 10 . In addition, the light-emitting surface 12 is an arc-shaped structure protruding outward away from the LED light sources 21, and the light refracted by the vertical surface 1121 and the inclined surface 1122 of the light-incident surface 11 enters the light-emitting surface 12, and due to the The light emitting surface 12 is a convex arc surface structure, therefore, light rays are refracted twice on the light emitting surface 12 to form collimated light rays, and the light rays emitted by these LED light sources 21 are parallel to or in an A smaller included angle, in this way, realizes the light emitting effect of a small angle. Compared with the existing structure using a plurality of lenses, the utility model can realize light emission at a small angle through the light-transmitting cover 10, and the structure is simpler.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. within the spirit and principles of the present utility model shall include Within the protection scope of the utility model.

Claims (7)

1. a LED spotlight, comprise lamp holder, Lamp cup, LED/light source plate and diffuser, this LED/light source plate is arranged in this Lamp cup, this LED/light source plate is provided with LED/light source, this diffuser covers at open top place of this Lamp cup, it is characterized in that, this diffuser comprises the exiting surface of incidence surface and the end face being positioned at bottom surface, this incidence surface is towards the globoidal structure protruded away from described LED/light source, this incidence surface is provided with multiple concentric ring slot around the axis of this diffuser, described ring slot comprises vertical plane and scarp, this scarp be used for by light towards be parallel to described LED/light source axis direction refraction.

2. LED spotlight according to claim 1, it is characterised in that: the angle of this vertical plane and this scarp composition outwards successively decreases by the axis of this diffuser.

3. LED spotlight according to claim 1, it is characterised in that: the angle of this vertical plane and this scarp composition is acute angle.

4. LED spotlight according to claim 1, it is characterised in that: this exiting surface is the globoidal structure away from the outwardly setting of described LED/light source.

5. LED spotlight according to claim 1, it is characterised in that: the middle part of this incidence surface is provided with middle part incidence surface, and in the middle part of this, incidence surface is protrude, towards described LED/light source, the globoidal structure arranged, and in the middle part of this, incidence surface and this exiting surface form convex lens structures.

6. LED spotlight according to claim 1, it is characterised in that: this LED/light source plate is two dimensional structure, and described LED/light source is formed centrally ring structure in this LED/light source plate.

7. LED spotlight according to claim 6, it is characterised in that: the inner side-wall of this Lamp cup is provided with flange, this LED/light source plate be arranged on this flange and with this Lamp cup hot tie-in.