CN204986700U - LED spotlight - Google Patents

Abstract

An LED spotlight, comprising a lens, an LED light source board and one or more LED light sources arranged in a point light source shape, the lens is arranged above the LED light source board, and the lens is an inverted platform with a larger top and a smaller bottom Body structure, the bottom of the lens is roughly facing the LED light source with an incident surface, the top of the lens forms an outgoing surface approximately parallel to the LED light source board, the side of the lens forms a reflective surface, and the incident surface faces away from the LED light source For a concave groove structure, the incidence surface includes a first incidence portion, a second incidence portion and a transition section between the first incidence portion and the second incidence portion. The utility model forms a light distribution structure by setting the incident surface, the exit surface and the reflection surface, so that the light can realize the adjustment of the beam angle in the range of 25°-120° through the action of the first incident part, the second incident part and the transition section, thereby The LED spotlight has the advantage of being able to realize high-efficiency directional light distribution.

Description

LED spotlight

technical field

The utility model relates to an LED lighting fixture, in particular to an LED spotlight.

Background technique

LED light sources have the advantages of high luminous efficiency, low heat generation, power saving and long life, so their applications are becoming more and more extensive. LED lamps will gradually replace traditional lighting fixtures such as incandescent lamps and halogen lamps. When LED light sources are used for spotlight and flood lighting, reflective cups or lenses are generally used to distribute light to LED light sources. However, traditional reflective cups or lenses only use simple tapered reflective surfaces. Although they can achieve the light-gathering function, it is difficult for these structures to achieve efficient directional light distribution due to defects in the light distribution shape.

Utility model content

In view of this, it is necessary to provide an LED spotlight capable of realizing high-efficiency directional light distribution.

An LED spotlight, comprising a lens, an LED light source board and one or more LED light sources arranged in a point light source shape, the lens is arranged above the LED light source board, and the lens is an inverted platform with a larger top and a smaller bottom Body structure, the bottom of the lens is roughly facing the LED light source with an incident surface, the top of the lens forms an outgoing surface that is roughly parallel to the LED light source board, the side of the lens forms a reflective surface, and the incident surface faces away from the LED light source A concave groove structure, the incident surface includes a first incident part, a second incident part and a transition section arranged between the first incident part and the second incident part, the first incident part is arranged on the incident surface The middle part is arranged for the light emitted by the LED light source substantially parallel to the central axis direction, the first incident part is arranged approximately parallel to the LED light source board to refract the light emitted by the LED light source toward the outgoing surface, and the second incident part is arranged On the periphery of the first incident portion, the transition section is an arc-shaped structure, and the transition section is used to refract the light emitted by the LED light source close to the central axis direction toward the reflective surface, and the second incident portion is approximately perpendicular to the LED light source. The plate is arranged to refract light emitted by the LED light source away from its central axis toward the reflective surface, and the reflective surface is used to refract the incoming light toward the outgoing surface.

Compared with the existing technology, LED spotlights form a light distribution structure by setting an incident surface, an exit surface, and a reflection surface. Part of the light emitted by the LED light source passes through the incident surface and is directly irradiated toward the exit surface, and the other part of the light passes through the incident surface. After the reflection on the reflective surface, it is finally irradiated toward the outgoing surface. Wherein the incident surface includes a first incident portion, a second incident portion and a transition section. The first incident part is arranged in the middle of the incident surface and arranged approximately parallel to the LED light source board, and distributes the light emitted by the LED light source so that the light is approximately parallel to the central axis of the lens. The second incident part is arranged on the periphery of the first incident part and arranged approximately perpendicular to the LED light source board, and distributes the light emitted by the LED light source, refracts the light toward the reflective surface, and then irradiates the light toward the light emitting surface through the reflective surface. The transition section connects the first incident part and the second incident part and has an arc structure, which is used to refract the light toward the reflective surface, and irradiate the light toward the light-emitting surface through the reflective surface. Therefore, the adjustment of the light beam angle within the range of 25°-120° can be realized through the action of the light passing through the first incident portion, the second incident portion and the transition section. At the same time, most of the light passing through can pass through the refraction of the second incident portion and the transition section so that the light is irradiated toward the reflective surface, and then irradiated outward through the reflection of the reflective surface. Therefore, the LED spotlight has the advantage of being able to realize high-efficiency directional light distribution.

Description of drawings

Fig. 1 is a schematic diagram of the LED spotlight of the first embodiment of the present invention.

Fig. 2 is a front view of the lens in the LED spotlight shown in Fig. 1 .

Fig. 3 is a sectional view along line A-A in Fig. 2 .

detailed description

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

Please refer to FIG. 1 to FIG. 3 for the LED spotlight 100 of the first embodiment of the present invention.

Please refer to FIG. 1 to FIG. 3 , an LED spotlight 100 includes a lens 20 , an LED light source board 10 and one or more LED light sources 12 arranged in a point light source shape. The lens 20 is arranged on the LED light source board 10 Above, the lens 20 is an inverted mesa structure with a larger top and a smaller bottom. The bottom of the lens 20 is roughly facing the LED light source 12 with an incident surface 21. The top of the lens 20 forms an outgoing surface 23 that is approximately parallel to the LED light source board 10. The side surface of the lens 20 forms a reflective surface 22. The incident surface 21 It is a recessed groove structure facing away from the LED light source 12 . Wherein, the reflective surface 22 is a tapered arc surface structure. The incident surface 21 is a rotary structure formed by rotating around the central axis of the LED light source 12 as a central axis.

The LED spotlight 100 with the above structure forms a light distribution structure by setting the incident surface 21, the exit surface 23, and the reflection surface 22. Part of the light emitted by the LED light source 12 passes through the incident surface 21 and is directly irradiated toward the exit surface 23, while the other part of the light passes through the incident surface 21. After passing through the incident surface 21 , it is reflected by the reflective surface 22 and finally irradiates towards the outgoing surface 23 . Wherein, the incident surface 21 is a recessed groove structure facing away from the LED light source 12 , which imitates the shape of a halogen lamp and meets various demands of the market. The incident surface 21 is a structure of revolution formed by rotating with the central axis as the central axis, so that most of the light rays 11 can enter from the incident surface 21 and have a relatively uniform light distribution around it. The reflective surface 22 is a tapered arc surface structure, so that most of the light 11 can be reflected by the reflective surface 22 and irradiated outward.

The lens 20 is disposed close to the LED light source board 10 such that the incident surface 21 covers the LED light source 12 and is disposed. The bottom surface of the lens 20 is placed close to the LED light source board 10 , so that the heat generated by the LED light source 12 is transmitted to the lens 20 through the LED light source board 10 , and at the same time, the incident surface 21 is set to cover the LED light source 12 . The lens 20 is integrally made of glass or plastic or ceramics.

1 to 3, the incident surface 21 includes a first incident portion 211, a second incident portion 212 and a transition section 213 disposed between the first incident portion 211 and the second incident portion 212, the first The incident part 211 is arranged in the middle of the incident surface 21 and is set to the light ray 11 emitted by the LED light source 12 substantially parallel to the central axis direction. The emitted light 11 is refracted toward the outgoing surface 23, the second incident portion 212 is arranged on the periphery of the first incident portion 211, and the transition section 213 is an arc-shaped structure, and the transition section 213 is used for emitting from the LED light source 12. The light 11 close to the central axis direction is refracted toward the reflective surface 22, and the second incident portion 212 is arranged approximately perpendicular to the LED light source board 10 to refract the light 11 emitted by the LED light source 12 off its central axis toward the reflective surface 22, The reflective surface 22 is used for reflecting the incoming light 11 toward the outgoing surface 23 .

According to the above structure, the incident surface 21 includes a first incident portion 211 , a second incident portion 212 and a transition section 213 . The first incident portion 211 is disposed in the middle of the incident surface 21 and is approximately parallel to the LED light source board 10 , and distributes the light emitted by the LED light source 12 so that the light 11 is approximately parallel to the central axis of the lens 20 . The second incident part 212 is arranged on the periphery of the first incident part 211 and is arranged approximately vertically to the LED light source board 10, and distributes the light emitted by the LED light source 12, refracts the light 11 toward the reflective surface 22, and then passes through the reflective surface 22 to The light 11 is irradiated toward the light-emitting surface. The transition section 213 connects the first incident portion 211 and the second incident portion 212 and is arc-shaped, used for refracting the light 11 toward the reflective surface 22 and irradiating the light 11 toward the light-emitting surface through the reflective surface 22 . Therefore, the adjustment of the beam angle within the range of 25°-120° can be realized by making the light 11 pass through the first incident portion 211 , the second incident portion 212 and the transition section 213 . The first incident part 211 is a spherical surface with a large curvature or is parallel to the LED light source board 10, so the first incident part 211 can focus the light 11 irradiated toward it toward the central axis of the lens 20, so that the light 11 has Ray 11 shines. At the same time, by setting the second incident part 212 to be approximately perpendicular to the LED light source board 10, the incident surface 21 is raised, so that most of the light 11 can pass through the second incident part 212 and the refraction of the transition section 213 to make the light 11 is irradiated toward the reflective surface 22, and then irradiated outward by the reflection of the reflective surface 22. On the one hand, the optical efficiency is greatly improved, and the lighting spot is reduced to make the lighting effect better. On the other hand, most of the light rays 11 are concentrated or irradiated at a large angle through light distribution, so as to realize the adjustment of the beam angle.

Please refer to FIG. 3 , it also includes a stage stage 214, one end of the stage stage 214 is connected to the first incident part 211, and the other end of the stage stage 214 is connected to the transition section 213, and the setting of the stage stage 214 makes the first incident part The height of 211 relative to the LED light source board 10 is greater than the heights of the transition section 213 and the second incident portion 212 relative to the light source board. The stage 214 is substantially perpendicular to the LED light source board 10 .

To sum up, the first incident part 211 is arranged in the middle of the incident surface 21 and the first incident part 211 is a spherical surface with a large curvature or is parallel to the LED light source board 10, so the first incident part 211 can irradiate toward it. The light ray 11 is concentrated toward the central axis of the lens 20, so that the small angle of the light 11 near the central axis can achieve better light concentration. At the same time, by setting the second incident part 212 to be approximately perpendicular to the LED light source board 10, the incident surface 21 is raised, so that most of the light 11 can pass through the second incident part 212 and the refraction of the transition section 213 to make the light 11 is irradiated toward the reflective surface 22, and then irradiated outward by the reflection of the reflective surface 22. In this way, on the one hand, the optical efficiency is greatly improved, and the illumination spot is reduced to make the illumination effect better. On the other hand, most of the light rays 11 are concentrated or illuminated at a large angle through light distribution, and the adjustment of the beam angle within the range of 25°-120° is realized. This makes the overall height of the lens 20 relatively low. The stage 214 is set so that part of the light emitted from the LED light source 12 that deviates from the central axis is refracted by the stage 214 toward the exit surface 23. Compared with the situation where the stage 214 is not provided, the refracted light It is more biased towards the direction of the central axis. Therefore, setting the stage is beneficial to make the light emit in a direction parallel to the central axis, which is beneficial to light concentration.

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 (8)

1. An LED spotlight, comprising a lens, an LED light source board and one or more LED light sources arranged in a point light source shape, the lens is arranged above the LED light source board, the lens is larger at the top and smaller at the bottom The inverted mesa structure is characterized in that the bottom of the lens is roughly facing the LED light source with an incident surface, the top of the lens forms an outgoing surface approximately parallel to the LED light source board, the side of the lens forms a reflective surface, and the incident surface A recessed groove structure facing away from the LED light source, the incident surface includes a first incident part, a second incident part and a transition section between the first incident part and the second incident part, the first incident part It is arranged in the middle of the incident surface and is arranged for the light emitted by the LED light source substantially parallel to the central axis direction, and the first incident part is arranged approximately parallel to the LED light source board to refract the light emitted by the LED light source toward the exit surface, The second incident part is arranged on the periphery of the first incident part, and the transition section is an arc-shaped structure. The portion is arranged approximately perpendicular to the LED light source board to refract the light emitted by the LED light source away from its central axis toward the reflective surface, and the reflective surface is used to reflect the incoming light toward the outgoing surface. 2. The LED spotlight according to claim 1, wherein the lens is integrally made of glass, plastic or ceramics. 3. The LED spotlight according to claim 1, further comprising a stage, one end of the stage is connected to the first incident part, the other end of the stage is connected to the transition section, the setting of the stage The height of the first incidence portion relative to the LED light source board is greater than the heights of the transition section and the second incidence portion relative to the light source board. 4. The LED spotlight according to claim 3, characterized in that: the stage is arranged approximately perpendicular to the LED light source board. 5. The LED spotlight according to claim 1, wherein the lens is arranged close to the LED light source board, so that the incident surface covers the LED light source. 6. The LED spotlight according to claim 1, characterized in that: the reflective surface is a tapered arc surface structure. 7. The LED spotlight according to claim 1, characterized in that: the incident surface is a structure of a rotator that rotates around the central axis of the LED light source as a central axis. 8. The LED spotlight according to claim 1, characterized in that: the bottom surface of the lens is placed close to the LED light source board, so that the heat generated by the LED light source is transmitted to the lens through the LED light source board, and at the same time, the incident face covering the LED light source set.