CN109681807B

CN109681807B - Lamp fitting

Info

Publication number: CN109681807B
Application number: CN201810720173.9A
Authority: CN
Inventors: 陈庆仲; 吴伟乐; 符光奖
Original assignee: Champ Tech Optical Foshan Corp
Current assignee: Champ Tech Optical Foshan Corp
Priority date: 2018-07-03
Filing date: 2018-07-03
Publication date: 2022-01-14
Anticipated expiration: 2038-07-03
Also published as: CN109681807A

Abstract

A lamp comprises a lamp holder, a lamp strip and a blue transparent film. The lamp holder is provided with a groove. The lamp strip sets up recess bottom. The blue transparent film is attached to the inner wall of the groove and is arranged at intervals with the light bar.

Description

Lamp fitting

Technical Field

The invention relates to a lamp, in particular to a lamp with adjustable color tolerance.

Background

Color tolerance refers to the deviation of the chromaticity of a light source from a standard color, and is expressed in SDCM (standard deviation of color matching). Color tolerance is an important factor in considering light quality. Since one characterizes the color temperature of a light source by the correlated color temperature cct (correlated color temperature), the temperature of a black body at a certain temperature is expressed as the color temperature (i.e., color temperature) of the light source by comparing the color of light emitted by one light source and the color of light radiated by the black body (e.g., platinum) at the certain temperature. If the color tolerance of the light source with the same color temperature is too large, the colors are inconsistent and can be obviously observed by human eyes.

Therefore, the color tolerance of the lamp as a light source cannot be made excessively large. The current industry standard requires that the color tolerance of the lamp is controlled within 5 steps (SDCM ≦ 5). But the structure of the common lamp is simple, no corresponding adjustment measure is provided, and the color tolerance of the common lamp is difficult to control within 5 steps.

Disclosure of Invention

In view of the above, it is desirable to provide a lamp with adjustable color tolerance.

According to the lamp provided by the invention, the color temperature of emergent light of the lamp is improved and the color tolerance of light emitted by the lamp is reduced by pasting the blue transparent film on the inner wall of the groove of the lamp.

Drawings

Fig. 1 is a perspective view of a lamp according to the present invention.

Fig. 2 is a disassembled schematic view of the lamp of the present invention.

Fig. 3 is a blue light proportion diagram of the emergent light before and after the blue transparent film is added to the lamp.

Fig. 4A is a schematic diagram of the color tolerance of the emergent light before the blue transparent film is added to the lamp.

Fig. 4B is a schematic diagram of the color tolerance of the emergent light of the lamp after the blue transparent film is added.

Description of the main elements

Lamp 100

Lamp holder 10

Upper surface 12

Lower surface 14

Groove 120

Light bar 20

Annular part 22

Luminous body 24

Light guide plate 30

Blue transparent film 40

Light outlet cover 50

First part 52

Second portion 54

Central axis O

The following detailed description will further illustrate the invention in conjunction with the above-described figures.

Detailed Description

Referring to fig. 1 and fig. 2, a lamp 100 according to an embodiment of the invention includes a lamp socket 10, a light bar 20, a light guide plate 30, a blue transparent film 40, and a light outlet cover 50. The light bar 20, the light guide plate 30 and the blue transparent film 40 are located in the lamp holder 10. The light outlet cover 50 is located on an end surface of the lamp holder 10.

Specifically, the lamp socket 10 includes an upper surface 12 and a lower surface 14 opposite to each other. The upper surface 12 is parallel to the lower surface 14. A groove 120 is formed on the upper surface 12. The recess 120 extends through the upper surface 12 and terminates at the lower surface 14. The lamp holder 10 may be of any shape. Preferably, the lamp socket 10 has a cylindrical or square block shape. In this embodiment, the lamp socket 10 has a cylindrical shape.

The light bar 20 is used for providing a light source. The light bar 20 is fixedly arranged at the bottom of the groove 120. In this embodiment, the light bar 20 is annular. The light bar includes a ring portion 22 and a plurality of light emitters 24. The plurality of luminous bodies 24 are disposed at intervals on the inner wall of the annular portion 22, and the plurality of luminous bodies 24 are disposed at equal intervals. Specifically, the light bar 20 is clamped at the bottom of the groove 120 and attached to the inner wall of the groove 120.

The light guide plate 30 is used for guiding the propagation direction of the light emitted from the light bar 20. The light guide plate 30 is fixedly disposed in the groove 120, and is spaced apart from the light bar 20. The size of the light guide plate 30 is adapted to the size of the groove 120. In the present embodiment, the light guide plate 30 is a circular thin plate. The light guide plate 30 is parallel to the upper surface 12.

The blue transparent film 40 is attached to the inner wall of the lamp holder 10. The blue transparent film 40 is disposed between the upper surface 12 and the light guide plate 30 and spaced apart from the upper surface and the light guide plate. In this embodiment, the blue transparent film 40 is parallel to the upper surface 12. The blue transparent film 40 is an annular ring body. Since the plurality of light emitters 24 emit light during the process, the emitted light is absorbed by the material in the lamp 100. While among the absorbed light, blue light accounts for a larger proportion. After the blue transparent film 40 is attached to the inner wall of the lamp holder 10, light rays pass through the blue transparent film 40, and blue light in the lamp 100 can be compensated, so that the color temperature is improved, and the color tolerance is reduced. The user can determine the shade of the color degree of the blue transparent film 40 according to the color temperature shift. The more the color temperature is reduced, the deeper the color of the blue transparent film 40 is added relatively.

The light outlet cover 50 is disposed at the opening of the groove 120. The light exit mask 50 includes a first portion 52 and a second portion 54. The first portion 52 conforms to and generally coincides with the outer wall of the lamp holder 10. The second portion 54 is attached to the upper surface 12. The second portion 54 is perpendicular to the first portion 52 and extends in a direction close to the central axis of the lamp holder 10. The second portion 54 is located directly above the blue transparent film 40, and the blue transparent film 40 is completely blocked by the second portion 54.

In other embodiments, the light outlet cover 50 and the lamp socket 10 are integrally formed.

When the lamp strip 20 is installed, the lamp strip 20 is firstly placed at the bottom of the groove 120. Preferably, the light bar 20 is placed at the center of the bottom of the groove 120. Then, the light guide plate 30 is placed inside the groove 120. The light guide plate 30 is fixed on the inner wall of the groove 120, spaced apart from the light bar 20, and parallel to the upper surface 12. Next, the blue transparent film 40 is disposed on the inner wall of the groove 120 and between the upper surface 12 and the light guide plate 30. The blue transparent film 40 is parallel to the upper surface 12 and the light guide plate 30. Finally, the light outlet cover 50 is fixed at the opening of the groove 120, so that the second portion 54 completely covers the blue transparent film 40, thereby completing the installation of the lamp 100.

Referring to fig. 3, a blue light ratio of light emitted before and after the lamp 100 is installed on the blue transparent film 40 is shown. The abscissa is the wavelength of light in nanometers; the ordinate is the spectral power in milliwatts per nanometer. Notably, the luminaire 100 is after the blue transparent film 40 (blue transparent film) is added. The spectrum blue light ratio of the light emitted by the lamp 100 is improved from 2.02576% to 2.14827%. Namely, the blue light proportion of the spectrum can be improved after the blue-blue transparent film is added, so that the color temperature is improved.

Fig. 4A and 4B are a diagram illustrating color tolerance measurement of light emitted from the lamp 100 before and after the blue transparent film 40 is mounted. Notably, the luminaire 100 is after the blue transparent film 40 (blue transparent film) is added. The color tolerance of the light emitted by the light fixture 100 is reduced from the original 6.5SDCM to 3.8 SDCM. That is, the color tolerance can be significantly reduced by adding a blue-blue transparent film.

In the lamp 100 of the present invention, the inner wall of the groove 120 of the lamp 100 is covered with the blue transparent film 40, so as to improve the color temperature of the light emitted from the lamp 100 and reduce the color tolerance of the light emitted from the lamp 100.

It is understood that various other changes and modifications may be made by those skilled in the art based on the technical idea of the present invention, and all such changes and modifications should fall within the protective scope of the claims of the present invention.

Claims

1. A light fixture, comprising:

a lamp holder, wherein a groove is formed on the lamp holder;

the light bar is arranged at the bottom of the groove;

the blue transparent film is attached to the inner wall of the groove and is arranged at intervals with the light bar, and the blue transparent film is an annular ring body; light rays emitted by the lamp strip penetrate through the blue transparent film, so that blue light in the lamp can be compensated, the color temperature is improved, and the color tolerance is reduced; and

and the light guide plate is positioned between the blue transparent film and the light bar and is mutually spaced from the light bar and the blue transparent film.

2. The luminaire of claim 1, wherein: the lamp comprises a light-emitting cover, the light-emitting cover is located at the opening of the groove and surrounds the groove, and the light-emitting cover is located right above the blue transparent film and completely shields the blue transparent film.

3. The luminaire of claim 2, wherein: the light-emitting cover comprises a first part and a second part, the first part is attached to the outer wall of the lamp holder, and the second part is perpendicular to the first part and extends towards the direction close to the axis of the lamp holder.

4. The luminaire of claim 2, wherein: the blue transparent film and the light-emitting cover are arranged in parallel at intervals.

5. The luminaire of claim 3, wherein: the lamp holder comprises an upper surface and a lower surface, the upper surface and the lower surface are arranged in a back-to-back mode, the second portion is attached to the upper surface, and the blue transparent film is parallel to the upper surface.

6. The luminaire of claim 1, wherein: the lamp strip is fixed in the center of the bottom of the groove.

7. The luminaire of claim 1, wherein: the shape of the light guide plate is adapted to the shape of the groove.

8. The luminaire of claim 2, wherein: the light outlet cover and the lamp holder are of an integrally formed structure.