CN216345576U

CN216345576U - Optical structure

Info

Publication number: CN216345576U
Application number: CN202122668133.4U
Authority: CN
Inventors: 黄盛权; 刘朝荣
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-11-02
Filing date: 2021-11-02
Publication date: 2022-04-19
Anticipated expiration: 2031-11-02

Abstract

The utility model relates to an optical structure for an LED searchlight. The object is to provide an optical structure which is small in size, in particular in length, but nevertheless ensures a sufficient light effect. An optical structure comprising: the LED light sources of each group of small light-emitting units are uniformly distributed in a circular, rectangular or regular polygonal range, so that light beams formed when the LED light sources simultaneously emit light have a circular, rectangular or regular polygonal cross section; further comprising: the LED light sources are arranged on the heat dissipation substrate, the lenses and the LED light sources are arranged above the corresponding LED light sources in a one-to-one correspondence mode, the maximum distance from each LED light source to the corresponding lens is smaller than 120 mm, and the diameter of each lens is smaller than 80 mm.

Description

Optical structure

Technical Field

The utility model relates to the technical field of LED illumination, in particular to an optical structure for an LED searchlight.

Background

Because a single LED light source has limited power and limited brightness, the current high-brightness LED light source takes a COB light source as a main stream, and the COB light source is a high-power high-brightness integrated surface light source which directly pastes a plurality of LED chips on a mirror surface metal substrate with high light reflection rate. The LED chips are integrated into a surface light source, and then are matched with a plurality of lenses with large diameters to form an integral large light-emitting unit (a large light beam). Since the light-emitting area of the surface light source is very large, in order to obtain a light-gathering type light beam with a small angle, two or more optical lenses need to be combined, and a distance (simply understood as a focal distance) between the light source and the lenses is long enough to achieve the purpose. Based on such an optical structure, a luminaire (floodlight) is produced which is very bulky, more specifically the length of the luminaire is very large. The overall length L1 of the projector based on the area light source with a large light emitting area and the lenses with large diameters is usually greater than 550 mm, as shown in fig. 5.

SUMMERY OF THE UTILITY MODEL

The object of the present invention is to overcome the disadvantages of the prior art and to provide an optical structure which is small in size, in particular length, but still ensures a sufficient lighting effect.

The purpose of the utility model is realized as follows:

an optical structure comprising: the LED light sources of each group of small light-emitting units are uniformly distributed in a circular, rectangular or regular polygonal range, so that light beams formed when the LED light sources simultaneously emit light have a circular, rectangular or regular polygonal cross section; further comprising: the LED light sources are arranged on the heat dissipation substrate, the lenses and the LED light sources are arranged above the corresponding LED light sources in a one-to-one correspondence mode, the maximum distance from each LED light source to the corresponding lens is smaller than 120 mm, and the diameter of each lens is smaller than 80 mm.

Furthermore, a plurality of light source installation preformed holes are arranged on the heat dissipation substrate, the LED light sources are fixed in the light source installation preformed holes, a lens installation seat is arranged above the heat dissipation substrate through a support column, a plurality of lens installation holes are formed in the lens installation seat, the lens installation holes correspond to the light source installation preformed holes one by one, and the lenses are fixed on the lens installation holes.

Preferably, the lens mount includes: the lens fixing device comprises a detachable fixed upper seat and a detachable fixed lower seat, wherein an upper hole and a lower hole which correspond to each other up and down are respectively formed in the fixed upper seat and the fixed lower seat, when the fixed upper seat and the fixed lower seat are combined together, the upper hole and the lower hole are overlapped together to form a lens mounting hole, and the lens is arranged between the upper hole and the lower hole and is fixed by the combined fixed upper seat and the fixed lower seat.

Wherein the fixed upper seat is an aluminum ring; the fixed lower seat is an aluminum ring.

Compared with the prior art, the optical structure provided by the utility model has the following beneficial effects due to the adoption of the technical scheme: the optical structure provided by the utility model is characterized in that a single lamp bead is matched with a single lens to form a compact small light-emitting unit (namely, a small light beam), and then a plurality of small light-emitting units are arranged in a regular mode, so that a high-brightness large light beam is converged. Because the light emitting surface of a single LED light source is very small, a light beam with a very small angle can be obtained through a single lens with a very small diameter and a very small focal length, and then a plurality of groups of light beams are gathered (namely, a plurality of light emitting units are gathered), so that a large light beam with high brightness and practical value is obtained, the distance between the light source and the lens is greatly shortened, and the length of the lamp manufactured by the light source can be further shortened. Under the condition of the same light effect, compared with the LED lamp manufactured by the COB light source in the prior art, the LED lamp manufactured by the optical structure greatly reduces the volume of the lamp, and particularly enables the appearance of the product to be more attractive in the length direction. The utility model adopts a brand new design idea to solve the technical problem that the LED light source condensation type searchlighting lamp is very long.

The object of the utility model can also be achieved by:

an optical structure comprising a plurality of groups of small light-emitting units, each group of small light-emitting units comprising: the LED light source is fixed on the heat dissipation substrate, the lens and the LED light source are correspondingly arranged above the LED light source, the centers of the lens and the LED light source are on the same straight line, the maximum distance from the LED light source to the corresponding lens is less than 120 mm, and the diameter of the lens is less than 80 mm; the LED light sources of each group of small light-emitting units are uniformly distributed in a circular, rectangular or regular polygonal range, so that when the LED light sources of each group of small light-emitting units emit light simultaneously, a formed light beam has a circular, rectangular or regular polygonal cross section.

Further, a light source installation preformed hole is formed in the heat dissipation substrate, the LED light source is fixed in the light source installation preformed hole, a lens installation seat is installed above the heat dissipation substrate through a support column, a lens installation hole is formed in the lens installation seat and corresponds to the light source installation preformed hole, and the lens is fixed on the lens installation hole.

By adopting the scheme, a user can assemble a desired product by himself, and the method has higher flexibility and design experience.

Drawings

Further advantages and characteristics of the utility model are illustrated by the following description of an embodiment thereof, given by way of example and not of limitation, with reference to the accompanying drawings, in which:

FIG. 1 is a schematic diagram of a preferred embodiment of an optical structure according to the present invention.

Fig. 2 is an exploded view of the embodiment shown in fig. 1.

Fig. 3 is a schematic structural diagram of an embodiment of an LED lamp manufactured by using an optical structure according to the present invention.

FIG. 4 is an exploded view of a small light-emitting unit in accordance with another preferred embodiment of an optical structure of the present invention.

Fig. 5 is a schematic structural diagram of an LED lamp manufactured by using a COB light source in the prior art.

Detailed Description

An optical structure as shown in fig. 1, comprising: a heat dissipation substrate 3, seven LED light beads 1 are uniformly distributed in a circular range in the mounting prepared hole 30 preset on the heat dissipation substrate 3, the lens mount pad 5 is fixed above the heat dissipation substrate 3 through the support column 2, as shown in fig. 2, the lens mount pad 5 includes a fixed upper seat 51 and a fixed lower seat 52, in this embodiment, the fixed upper seat 51 and the fixed lower seat 52 are aluminum rings. The upper fixed seat 51 is provided with an upper hole 510, the lower fixed seat 52 is provided with a lower hole 520 corresponding to the upper hole 510, when the upper fixed seat 51 and the lower fixed seat 52 are combined together, the upper hole 510 and the lower hole 520 are overlapped to form a lens mounting hole 50, the lens mounting hole 50 corresponds to the mounting preformed hole 30 on the heat dissipation substrate 3 one by one, the lens 4 is arranged between the upper hole 510 and the lower hole 520 and is fixed by the combined upper fixed seat 51 and the lower fixed seat 52, and the center of the lens 4 and the center of the corresponding LED light bead 1 are on the same straight line. The maximum distance from the LED light bead 1 to the corresponding lens 4 is 45mm, and the diameter of the lens 4 is 55 mm.

As shown in fig. 3, the overall length L2 of the LED lamp manufactured by using the optical structure proposed in this embodiment is less than 300 mm.

Fig. 4 shows a schematic view of the structure of a small light-emitting unit of another preferred embodiment of an optical structure according to the utility model. In this embodiment, an optical structure includes a plurality of groups of small light-emitting units, and the LED light sources of each group of small light-emitting units are uniformly distributed within a circular, rectangular, or regular polygonal range, so that a light beam formed when the LED light sources of each group of small light-emitting units emit light simultaneously has a circular, rectangular, or regular polygonal cross section. Each group of small light emitting units includes: the LED light source comprises an LED light source 1, a lens 4 and a heat dissipation substrate 3, wherein a light source installation preformed hole 30 is formed in the heat dissipation substrate 3, and the LED light source 1 is fixed in the light source installation preformed hole 30.

The lens mount 5 is fixed above the heat dissipating substrate 3 through the support pillar 2, and the lens mount 5 includes a fixed upper seat 51 and a fixed lower seat 52, in this embodiment, the fixed upper seat 51 and the fixed lower seat 52 are aluminum rings. The upper fixing base 51 is provided with an upper hole 510, the lower fixing base 52 is provided with a lower hole 520 corresponding to the upper hole 510, and when the upper fixing base 51 and the lower fixing base 52 are combined together, the upper hole 510 and the lower hole 520 are overlapped to form a lens mounting hole corresponding to the mounting prepared hole 30 on the heat dissipation substrate 3. The lens 4 is disposed between the upper hole 510 and the lower hole 520 and fixed by the combined fixed upper holder 51 and fixed lower holder 52, and the center of the lens 4 is aligned with the center of its corresponding LED light bead 1. The maximum distance from the LED light source 1 to the lens 4 is less than 120 mm, and the diameter of the lens 4 is less than 80 mm.

Although the present invention has been described in terms of the preferred embodiments, it is not intended that the scope of the utility model be limited to the exact construction described above, and equivalent alternate constructions will occur to those skilled in the art upon reading the foregoing description and are intended to be encompassed by the present invention unless they depart from the spirit and scope of the utility model.

Claims

1. An optical structure, comprising: the LED light sources of each group of small light-emitting units are uniformly distributed in a circular, rectangular or regular polygonal range, so that light beams formed when the LED light sources simultaneously emit light have a circular, rectangular or regular polygonal cross section; further comprising:

the LED light sources are arranged on the heat dissipation substrate, the lenses and the LED light sources are arranged above the corresponding LED light sources in a one-to-one correspondence mode, the maximum distance from each LED light source to the corresponding lens is smaller than 120 mm, and the diameter of each lens is smaller than 80 mm.

2. The optical structure of claim 1, wherein: the LED light source mounting structure is characterized in that a plurality of light source mounting preformed holes are arranged on the heat dissipation substrate, the LED light sources are fixed in the light source mounting preformed holes, a lens mounting seat is arranged above the heat dissipation substrate through a supporting column, a plurality of lens mounting holes are formed in the lens mounting seat, each lens mounting hole corresponds to each light source mounting preformed hole one by one, and the lenses are fixed on the lens mounting holes.

3. The optical structure of claim 2, wherein: the lens mount includes: the lens fixing device comprises a detachable fixed upper seat and a detachable fixed lower seat, wherein an upper hole and a lower hole which correspond to each other up and down are respectively formed in the fixed upper seat and the fixed lower seat, when the fixed upper seat and the fixed lower seat are combined together, the upper hole and the lower hole are overlapped together to form a lens mounting hole, and the lens is arranged between the upper hole and the lower hole and is fixed by the combined fixed upper seat and the fixed lower seat.

4. The optical structure of claim 3, wherein: the fixed upper seat is an aluminum ring.

5. The optical structure of claim 3, wherein: the fixed lower seat is an aluminum ring.

6. An optical structure comprising a plurality of groups of small light-emitting units, each group of small light-emitting units comprising: the LED light source is fixed on the heat dissipation substrate, the lens and the LED light source are correspondingly arranged above the LED light source, the centers of the lens and the LED light source are on the same straight line, the maximum distance from the LED light source to the corresponding lens is less than 120 mm, and the diameter of the lens is less than 80 mm; the LED light sources of each group of small light-emitting units are uniformly distributed in a circular, rectangular or regular polygonal range, so that when the LED light sources of each group of small light-emitting units emit light simultaneously, a formed light beam has a circular, rectangular or regular polygonal cross section.

7. The optical structure of claim 6, wherein: the LED lamp is characterized in that a light source installation preformed hole is formed in the radiating substrate, the LED light source is fixed in the light source installation preformed hole, a lens mounting seat is arranged above the radiating substrate through a supporting column, a lens mounting hole is formed in the lens mounting seat, the lens mounting hole corresponds to the light source installation preformed hole, and the lens is fixed on the lens mounting hole.

8. The optical structure of claim 7, wherein: the lens mount includes: the lens fixing device comprises a detachable fixed upper seat and a detachable fixed lower seat, wherein an upper hole and a lower hole which correspond to each other up and down are respectively formed in the fixed upper seat and the fixed lower seat, when the fixed upper seat and the fixed lower seat are combined together, the upper hole and the lower hole are overlapped together to form a lens mounting hole, and the lens is arranged between the upper hole and the lower hole and is fixed by the combined fixed upper seat and the fixed lower seat.

9. The optical structure of claim 8, wherein: the fixed upper seat is an aluminum ring.

10. The optical structure of claim 8, wherein: the fixed lower seat is an aluminum ring.