CN114234086A - Double-light-path light projection display lighting device - Google Patents

Abstract

A double-light-path light projection display lighting device is characterized by comprising a single main light source, a plurality of same sub-light sources and a total reflection light guide plate; the main light source emits light vertically, the sub-light sources emit light laterally, and the light emitting directions of the main light source and the sub-light sources are mutually vertical; the total reflection light guide plate is positioned above the main light source and is vertical to the main optical axis; the multiple sub light sources are uniformly arranged around at least one side of the total reflection light guide plate at intervals.

Description

Double-light-path light projection display lighting device

Technical Field

The invention relates to the field of stages and landscape lamps, in particular to a double-light-path light projection display lighting device.

Background

At present, a high-power COB is generally used as a main light source, meanwhile, a low-power color LED is distributed around the main light source or on the outer ring of a lamp holder and is used as a sub-light source, and when the main light source is used, the light is soft and free of glare, high in lighting effect and high in color reduction degree, so that the requirements of the site environment of various active programs and the visual perception of people are met. And the application of the backlight source can not cause dark field environment after the main light source is closed, so that the light outlet surface of the lamp holder becomes a display lamp body capable of mixing any color, and the lighting function and the site environment rendering and embellishing function of the audience lamp are greatly enriched.

However, such viewer lights typically have the following problems: if the sub-light sources are arranged on the surface of the lamp holder, the defects of uneven color mixing of light spots projected by the sub-light sources and excessively obvious bright spots of lamp beads exist; if the sub-light source is arranged on the same plane with the main light source COB, the problem of interference easily formed by the heat dissipation structure at the bottom of the lamp panel and an electronic scheme can exist because the quantity and the power difference of the main light source and the sub-light source are large, and the defect that the light spot brightness is obviously uneven due to the fact that the dark area appears in the light spot middle section formed by the sub-light source can be overcome.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a simple and practical discharge protection circuit.

In order to achieve the purpose, the invention adopts the following technical scheme:

a double-light-path light projection display lighting device comprises a single main light source, a plurality of same sub-light sources and a total reflection light guide plate; the main light source emits light vertically, the sub-light sources emit light laterally, and the light emitting directions of the main light source and the sub-light sources are mutually vertical; the total reflection light guide plate is positioned above the main light source and is vertical to the main optical axis; the multiple sub light sources are uniformly arranged around at least one side of the total reflection light guide plate at intervals.

Further, the single main light source is a single LED light source or a single COB light source.

Furthermore, the sub-light source is a surface mounted LED lamp bead.

Furthermore, the thickness of the total reflection light guide plate is larger than the length or the width of the sub light source.

Furthermore, the thickness of the total reflection light guide plate is 2 mm-6 mm.

Furthermore, the distance D between the sub light source and the total reflection light guide plate is not less than 0 and not more than 0.5 mm.

Furthermore, the total reflection light guide plate is made of transparent materials.

Furthermore, the total reflection light guide plate is a single-sided microstructure.

Furthermore, a plurality of light collecting points are uniformly distributed on one surface of the total reflection light guide plate close to the main light source at intervals.

Furthermore, the total reflection light guide plate further comprises a Fresnel lens, and the Fresnel lens is positioned on one surface of the total reflection light guide plate, which is far away from the main light source.

Furthermore, the Fresnel lens is closely attached to the total reflection light guide plate.

And the condensing lens is positioned between the main light source and the total reflection light guide plate.

The technique of the present invention has the following advantages over the conventional technique

1-one lamp has two mutually compatible projection display systems of a main light source and a sub light source on the premise of not increasing the size of the lamp.

2, the problem of a light spot center dark space of the sub light source is avoided by the staggered arrangement of the sub light source and the main light source; meanwhile, the sub light source projects relatively uniform light spot effect through the total reflection light guide plate.

Drawings

The invention is explained in more detail below with reference to the figures and examples.

FIG. 1 is a schematic diagram of the optical path of the system of the present invention.

Fig. 2 is a schematic diagram of the optical paths of the sub-light sources.

Fig. 3 is an enlarged view of a portion a.

The various reference numbers in the figures illustrate:

1-a primary light source; 11-a condenser lens; 2-a sub-light source; 201-incident light; 202-scattered light; 203-total reflection light; 3-total reflection light guide plate, 31-light collecting point; 4-Fresnel lens.

Detailed Description

In order to make the technical problems solved, technical solutions adopted, and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention are described in further detail below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

As shown in fig. 1-3, a dual-optical path light projection display lighting device includes a single main light source 1, a plurality of identical sub-light sources 2, and a total reflection light guide plate 3; the main light source 1 emits light vertically, the sub-light source 2 emits light laterally, and the light emitting directions of the main light source 1 and the sub-light source 2 are mutually vertical; the total reflection light guide plate 3 is positioned above the main light source and is vertical to the main optical axis; the multiple sub-light sources 2 are uniformly arranged around at least one side of the total reflection light guide plate at intervals.

In a preferred embodiment, the single main light source 1 is a single LED light source or a single COB light source.

As a preferred embodiment, the sub-light source 2 is a patch LED lamp bead.

As a preferred embodiment, the thickness of the total reflection light guide plate 3 is greater than the length or width of the sub light source 2.

In a preferred embodiment, the total reflection light guide plate 3 has a thickness of 2mm to 6 mm.

In a preferred embodiment, the distance D between the sub-light source 2 and the total reflection light guide plate 3 is 0 ≦ D ≦ 0.5 mm.

In a preferred embodiment, the total reflection light guide plate 3 is made of a transparent material.

As a preferred embodiment, the total reflection light guide plate 3 is a single-sided microstructure. As shown in fig. 3, a plurality of lighting spots 31 are uniformly distributed on one surface of the total reflection light guide plate 3 close to the main light source 1 at intervals.

As a preferred embodiment, the total reflection light guide plate further comprises a fresnel lens 4, and the fresnel lens 4 is located on a side of the total reflection light guide plate 3 away from the primary light source 1.

In a preferred embodiment, the fresnel lens 4 is closely attached to the total reflection light guide plate 3.

As a preferred embodiment, the device further comprises a condensing lens 11 for collecting the light emitted from the primary light source 1, wherein the condensing lens 11 is located between the primary light source 1 and the total reflection light guide plate 3.

In the description herein, it is to be understood that the terms "upper," "lower," "left," "right," and the like are used in an orientation or positional relationship merely for convenience in description and simplicity of operation, and do not indicate or imply that the referenced device or element must have a particular orientation, configuration, and operation in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used merely for descriptive purposes and are not intended to have any special meaning.

In the description herein, references to the description of "an embodiment," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be appropriately combined to form other embodiments as will be appreciated by those skilled in the art.

The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.

Claims (12)

1. A double-light-path light projection display lighting device is characterized by comprising a single main light source, a plurality of same sub-light sources and a total reflection light guide plate; the main light source emits light vertically, the sub-light sources emit light laterally, and the light emitting directions of the main light source and the sub-light sources are mutually vertical; the total reflection light guide plate is positioned above the main light source and is vertical to the main optical axis; the multiple sub light sources are uniformly arranged around at least one side of the total reflection light guide plate at intervals.

2. A dual optical path light projection display illumination device as claimed in claim 1, wherein the single primary light source is a single LED light source or a single COB light source.

3. The illumination device of claim 1, wherein the sub-light sources are surface mount LED (surface mount LED) light beads.

4. A dual optical path light projection display illumination device as claimed in claim 1, wherein the total reflection light guide plate has a thickness greater than a length or a width of the sub light source.

5. The illumination device of claim 4, wherein the total reflection light guide plate has a thickness of 2mm to 6 mm.

6. A dual-optical path light projection display illumination device as claimed in claim 4, wherein the distance D between the sub-light source and the total reflection light guide plate is 0 mm or more and 0.5mm or less.

7. A dual optical path light projection display illumination device as claimed in claim 1, wherein the total reflection light guide plate is made of transparent material.

8. The illumination device as claimed in claim 7, wherein the total reflection light guide plate is a single-sided microstructure.

9. A dual optical path light projection display illumination device as claimed in claim 8, wherein a plurality of lighting spots are uniformly distributed on the surface of the total reflection light guide plate close to the main light source.

10. The illumination device of claim 1, further comprising a fresnel lens located on a side of the total reflection light guide plate away from the primary light source.

11. A dual optical path light projection display illumination device as claimed in claim 1, wherein the fresnel lens is closely attached to the total reflection light guide plate.

12. The illumination device of claim 1, further comprising a condensing lens for collecting light emitted from the primary light source, wherein the condensing lens is disposed between the primary light source and the total reflection light guide plate.

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