CN114543015A

CN114543015A - Lighting system and desk lamp

Info

Publication number: CN114543015A
Application number: CN202210234294.9A
Authority: CN
Inventors: 朱兵; 王洪品; 易博; 沈云开
Original assignee: Ningbo Gongniu Optoelectronics Technology Co Ltd
Current assignee: Ningbo Gongniu Optoelectronics Technology Co Ltd
Priority date: 2022-03-09
Filing date: 2022-03-09
Publication date: 2022-05-27

Abstract

The invention provides a light emitting system and a desk lamp. A cover body having an opening; the lamp panel assembly is arranged on the inner side wall of the cover body; the diffusion plate is arranged at the opening and provided with a light-emitting surface, and the light-emitting surface forms an irradiation area; and the semi-permeable diffusion layer is arranged on the diffusion plate, so that the irradiation area is divided into a secondary diffusion area provided with the semi-permeable diffusion layer and a direct irradiation area not provided with the semi-permeable diffusion layer. The invention solves the problem of uneven illuminance of a desktop lighting system in the prior art.

Description

Light emitting system and desk lamp

Technical Field

The invention relates to the technical field of lighting equipment, in particular to a light-emitting system and a desk lamp.

Background

With the rapid development of LED lighting technology, LED lamps have been developed into the most important lighting products in the market due to their high efficiency, energy saving and environmental protection. This puts more careful demands on the LED lamp. For example, the most common direct-type lighting mode in a desktop lighting system is realized by combining the lamp panel, the lamp beads, the diffusion plate, the reflective cup and other parts, so that a good lighting effect can be achieved. However, due to the product characteristics of the desktop light emitting system, that is, the product is usually placed in a work/read-write area on a workbench or a desk top, that is, the desktop light emitting system is used in front of the placement position of the desktop light emitting system, so that the light of the desktop light emitting system is required to be biased to the front work/read-write area as much as possible, the backward light is reduced, and the illuminance uniformity of the work/read-write area is improved. However, because the light emitting body in the desktop light emitting system is an LED lamp bead, it is easy to cause the illumination of the working area to be uneven because the central area of the projected light spot is too bright and the edge area is too dark.

That is to say, the desktop lighting system in the prior art has the problem of uneven illuminance.

Disclosure of Invention

The invention mainly aims to provide a light-emitting system and a desk lamp, and aims to solve the problem that a desktop light-emitting system in the prior art is uneven in illuminance.

In order to achieve the above object, according to one aspect of the present invention, there is provided a light emitting system including: a cover body having an opening; the lamp panel component is arranged on the inner side wall of the cover body; the diffusion plate is arranged at the opening and provided with a light-emitting surface, and the light-emitting surface forms an irradiation area; and the semi-permeable diffusion layer is arranged on the diffusion plate, so that the irradiation area is divided into a secondary diffusion area provided with the semi-permeable diffusion layer and a direct irradiation area not provided with the semi-permeable diffusion layer.

Further, the lamp plate assembly is located one side of the cover body away from the user.

Further, the diffuser plate has the regional of penetrating directly that sets up adjacent with the secondary diffusion region, and the secondary diffusion region is close to the lamp plate subassembly for penetrating the region directly.

Further, a semi-permeable diffusion layer is provided on a side surface of the diffusion plate facing the cover body.

Further, the thickness of the semi-permeable diffusion layer is more than or equal to 1 micron and less than or equal to 10 microns.

Further, the cover body includes lateral wall and roof, and at least one side and the lateral wall of roof are connected, and the lamp plate subassembly sets up on lateral wall or roof.

Furthermore, the surface of the cover body facing one side of the diffusion plate is a light reflecting surface.

Furthermore, the ratio of the area of the semi-permeable diffusion layer to the area of the diffusion plate is more than or equal to 1:3 and less than or equal to 2: 3.

Further, all the regions of the secondary diffusion region are provided with semi-permeable diffusion layers.

Furthermore, the semi-permeable diffusion layer is at least one of a semi-permeable ink layer, a fog face layer, a frosting layer and a reflection rib layer.

Further, when the semi-permeable diffusion layer is a semi-permeable ink layer, the semi-permeable ink layer is formed by silk-screen printing or film covering.

According to another aspect of the present invention, there is provided a desk lamp comprising the above-mentioned lighting system.

By applying the technical scheme of the invention, the light-emitting system comprises a cover body, a lamp panel assembly, a diffusion plate and a semi-permeable diffusion layer, wherein the cover body is provided with an opening; the lamp panel assembly is arranged on the inner side wall of the cover body; the diffusion plate is arranged at the opening and provided with a light-emitting surface, and the light-emitting surface forms an irradiation area; the semi-permeable diffusion layer is disposed on the diffusion plate so that the irradiation area is divided into a secondary diffusion area provided with the semi-permeable diffusion layer and a direct irradiation area not provided with the semi-permeable diffusion layer.

The setting of the cover body can plan the direction of illumination of the light that the lamp plate assembly sent to it upwards gives out light to shelter from the lamp plate assembly, guarantees that the light majority that the lamp plate assembly sent can both shine in work area department. The arrangement of the diffusion plate can increase the uniformity of the illuminance of the light-emitting system and reduce the situations that the local area is too bright and the local area is too dark. The semi-transparent diffusion layer has certain light-shielding property, and the semi-transparent diffusion layer is arranged on the diffusion plate to form a secondary diffusion area, so that light irradiates an operation surface after secondary diffusion of the semi-transparent diffusion layer, and glare is reduced. Set up the diffusion layer of semi-permeable on the diffuser plate, can carry out the secondary to the light of secondary diffusion region department and shelter from, and then reduced the luminance of transmission facula central zone. The semi-permeable diffusion layer also has certain diffusivity, so that the diffusion plate can secondarily shield and reflect the light rays which penetrate the eyes of the user directly, the direct glare is reduced, the eye comfort of the user is guaranteed, and the use experience of the user is improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 shows a schematic light path diagram of a lighting system of an alternative embodiment of the present invention;

fig. 2 is a schematic structural diagram illustrating a diffusion plate according to a first embodiment of the present invention;

fig. 3 is a schematic structural diagram illustrating a diffusion plate according to a second embodiment of the present invention.

Wherein the figures include the following reference numerals:

1. the irradiation range of light rays is within the condition that the semi-transparent diffusion layer is not arranged on the secondary diffusion area; 2. the secondary diffusion area is provided with an irradiation range of light rays after the semi-permeable diffusion layer is arranged; 10. a cover body; 20. a lamp panel assembly; 30. a diffusion plate; 40. a semi-permeable diffusion layer; 50. a direct projection area.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

It is noted that, unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

In the present invention, unless specified to the contrary, use of the terms of orientation such as "upper, lower, top, bottom" or the like, generally refer to the orientation as shown in the drawings, or to the component itself in a vertical, perpendicular, or gravitational orientation; likewise, for ease of understanding and description, "inner and outer" refer to the inner and outer relative to the profile of the components themselves, but the above directional words are not intended to limit the invention.

The invention provides a light-emitting system and a desk lamp, aiming at solving the problem that a desktop light-emitting system in the prior art is uneven in illuminance.

As shown in fig. 1 to 3, the lighting system includes an enclosure 10, a lamp panel assembly 20, a diffuser plate 30 and a semi-transparent diffusion layer 40, wherein the enclosure 10 has an opening; the lamp panel assembly 20 is arranged on the inner side wall of the cover body 10; the diffusion plate 30 is arranged at the opening, the diffusion plate 30 is provided with a light-emitting surface, and the light-emitting surface forms an irradiation area; the semi-permeable diffusion layer 40 is disposed on the diffusion plate 30 such that the irradiation area is divided into a secondary diffusion area where the semi-permeable diffusion layer 40 is disposed and a direct irradiation area 50 where the semi-permeable diffusion layer 40 is not disposed.

The setting of the cover body 10 can plan the direction of illumination of the light that lamp plate assembly 20 sent to shelter from lamp plate assembly 20 and upwards give out light, guarantee that the light majority that lamp plate assembly 20 sent can both shine in work area department. The diffuser plate 30 can increase the uniformity of the illuminance of the light of the lighting system, and reduce the situations that the local area is too bright and the local area is too dark. The semi-transparent diffusion layer 40 has certain light-shielding property, and the semi-transparent diffusion layer 40 is arranged on the diffusion plate 30 to form a secondary diffusion area, so that light irradiates a working surface after being subjected to secondary diffusion of the semi-transparent diffusion layer 40, and glare is reduced. The semi-transparent diffusion layer 40 is arranged on the diffusion plate 30, so that light rays at the secondary diffusion area can be shielded secondarily, and further the brightness of the central area of the transmission light spot is reduced. In addition, the semi-transparent diffusion layer 40 has a certain diffusivity, so that the diffusion plate 30 can secondarily shield and reflect the light rays directly irradiating the eyes of the user, thereby reducing direct glare, ensuring the eye comfort of the user, and increasing the use experience of the user.

It should be noted that, in a normal sitting posture, the height of the eyes of the user of the desk lamp is slightly lower than the height of the light-emitting surface of the light-emitting system, so that a part of the light emitted from the light-emitting surface directly irradiates the eyes of the user, and the light indicated by the reference numeral 1 in fig. 1 directly irradiates the eyes of the user, causing dazzling glare (this part is shielded by the semi-transparent diffusion layer 40 to form a secondary diffusion area, so as to prevent the light from directly irradiating the eyes of the user, and the rest of the light-emitting surface is a direct diffusion area, as shown in fig. 2 and 3). And the semi-transparent diffusion layer 40 shields and reflects the light-emitting surface, so that direct glare is reduced.

The direct light region is a region in which light is directly emitted from the diffuser plate 30 without secondary diffusion through the semi-permeable diffusion layer 40. The secondary diffusion region is a region where light is emitted after secondary diffusion by the semi-transparent diffusion layer 40.

As can be seen from fig. 1, when the semi-transparent diffusion layer is not disposed on the secondary diffusion region, the angle between the irradiation range 1 of the light ray and the irradiation range 2 of the light ray after the semi-transparent diffusion layer is disposed on the secondary diffusion region is different, only the light range indicated by the reference numeral 1 can be irradiated to the human eye, and the range indicated by the reference numeral 2 cannot be irradiated to the human eye, so that the generation of glare is effectively reduced.

In the embodiment shown in fig. 1, when the user is in a normal sitting posture, H is the height of the light emitting surface of the light emitting system from the desk surface, H is the height of the eyes of the user from the desk surface in the normal sitting posture, and L is the distance of the eyes of the user from the light emitting system in the normal sitting posture. The irradiation angle range of the irradiation range 1 of the light ray in the case where the semi-transparent diffusion layer is not present on the secondary diffusion region is α. As can be seen from fig. 1, when the semi-transparent diffusion layer 40 is not provided in the secondary diffusion region, a range of light can be incident to human eyes. After the semi-transparent diffusion layer 40 is arranged on the secondary diffusion area, under the diffusion and reflection effects of the semi-transparent diffusion layer 40, light rays emitted by the secondary diffusion area can deviate towards the direction far away from a user, so that the light rays do not irradiate human eyes any more, and direct glare is effectively reduced.

As shown in fig. 1, the light panel assembly 20 is located on a side of the housing 10 away from the user. Set up lamp plate assembly 20 in the one side of the user is kept away from to cover body 10 for the light that lamp plate assembly 20 launches is mostly shone to one side at user place, with the light that reduces to the rear side projection, guarantees lighting system's the area of shining, guarantees to use eye safety.

It should be noted that, the side of the cover 10 close to the user is the front, and the side far away from the user is the rear, and the lamp panel assembly 20 is disposed on the side of the cover 10 far away from the user, so that the light can be projected forward, and the light projected backward is reduced.

Specifically, the secondary diffusion area is close to the lamp panel assembly 20 relative to the direct diffusion area 50. In such a structure in which the lamp panel assembly 20 is located on the side of the cover 10 away from the user, the secondary diffusion area is close to the lamp panel assembly 20 with respect to the direct projection area 50. Because the secondary diffusion region is close to lamp plate component 20, the light intensity at the secondary diffusion region is too strong, and the direct irradiation of human eyes produces glare. And providing a semi-transparent diffusion layer 40 over the secondary diffusion region reduces this glare.

It should be noted that the semi-transparent diffusion layer 40 is not needed to be disposed in the direct illumination region 50, because the light intensity at the direct illumination region 50 is less than that of the secondary diffusion region, and the shielding is not needed, and in addition, the light in the direct illumination region 50 does not irradiate the human eyes, and there is no glare problem.

Specifically, the semi-permeable diffusion layer 40 is provided on a surface of the diffusion plate 30 on a side facing the enclosure 10. The semi-transparent diffusion layer 40 is arranged on one side of the diffusion plate 30 far away from the cover body 10 and on one side towards the cover body 10, but because one side of the diffusion plate 30 far away from the cover body 10 can be touched to easily wear the semi-transparent diffusion layer 40, and the semi-transparent diffusion layer 40 is arranged on one side surface of the diffusion plate 30 towards the cover body 10, the wear to the semi-transparent diffusion layer 40 can be avoided, the service life of the semi-transparent diffusion layer 40 is ensured, and the working stability of the light-emitting system is improved.

Specifically, the thickness of the semi-permeable diffusion layer 40 is not less than 1 micron and not more than 10 microns. If the thickness of the semi-transparent diffusion layer 40 is less than 1 micron, the semi-transparent diffusion layer 40 has poor shielding performance, so that the central area of the light spot is easily too bright, and meanwhile, the glare sense is strong. If the thickness of the semi-transparent diffusion layer 40 is greater than 10 micrometers, the thickness of the semi-transparent diffusion layer 40 is too large, so that the light transmittance of the semi-transparent diffusion layer 40 is poor, and the illumination of the light emitting system is easily insufficient. The thickness of the semi-transparent diffusion layer 40 is limited within the range of 1 micron to 10 microns, and the light shading property and the light transmission property of the semi-transparent diffusion layer 40 can be considered, so that the illumination intensity of the light emitting system is ensured, the uniformity of the illumination intensity is increased, the glare is reduced, and the user experience is ensured.

Optionally, cover 10 includes lateral wall and roof, and at least one side and the lateral wall of roof are connected, and lamp plate subassembly 20 sets up on lateral wall or roof. Lamp plate assembly 20 can set up on the roof, and lamp plate assembly is directly luminous down like this, and the secondary diffusion region is in the position of lamp plate assembly 20 below this moment. And lamp plate assembly 20 can also set up on the lateral wall, and lamp plate assembly is the luminous of side like this, and the secondary diffusion region sets up in the one side that is close to lamp plate assembly 20 this moment.

Specifically, the surface of the cover 10 facing the diffuser 30 is a light-reflecting surface. Set up like this and can send lamp plate assembly 20 light to reflect in order to shine the workspace down to reduce the waste of light energy in cover body 10 department, guaranteed the utilization ratio of the light energy that lamp plate assembly 20 sent.

Optionally, the ratio of the area of the semi-permeable diffusion layer 40 to the area of the diffusion plate 30 is greater than or equal to 1:3 and less than or equal to 2: 3. If the ratio of the area of the semi-permeable diffusion layer 40 to the area of the diffusion plate 30 is less than 1:3, the area of the semi-permeable diffusion layer 40 is too small, the shielding range is small, and the local area of the light spot is too strong. If the ratio of the area of the semi-transparent diffusion layer 40 to the area of the diffusion plate 30 is greater than 2:3, the area of the semi-transparent diffusion layer 40 is too large, which results in a small light flux rate of the diffusion plate 30, and the light emitting system is not easy to meet the requirement of light flux. And the ratio of the area of the semi-permeable diffusion layer 40 to the area of the diffusion plate 30 is limited to be more than or equal to 1:3 and less than or equal to 2:3, so that the generation of overlarge local spot intensity can be reduced under the condition of ensuring the luminous flux.

It should be noted that, when the ratio of the area of the semi-transparent diffusion layer 40 to the area of the diffusion plate 30 is in the range of 1:3 to 2:3, the semi-transparent diffusion layer 40 needs to be designed according to the luminous intensity of the lamp panel assembly 20 and the light transmittance of the diffusion plate 30 to ensure that the luminous flux of the lighting system meets the national standard.

Specifically, the semi-permeable diffusion layer 40 is provided over the entire area of the secondary diffusion region. The semi-transparent diffusion layer 40 covers the whole area of the secondary diffusion area, so that no over-strong direct light is generated at all positions of the secondary diffusion area, and the generation of glare is greatly reduced.

Specifically, the semi-permeable diffusion layer 40 is at least one of a semi-permeable ink layer, a fog layer, a frosting layer and a reflective rib layer. The semi-permeable diffusion layer 40 may be a semi-permeable ink layer formed on the diffusion plate 30, a matte layer formed by performing matte treatment on the secondary diffusion area of the diffusion plate 30, a frosted layer formed by performing frosting treatment on the secondary diffusion area of the diffusion plate 30, or a reflective rib layer formed by providing some reflective ribs on the secondary diffusion area of the diffusion plate 30.

Since the semi-permeable ink layer has a property of being easily adsorbed on the diffusion plate 30, the semi-permeable ink layer is preferably used.

Of course, the semi-permeable diffusion layer 40 may also be formed by combining a semi-permeable ink layer, a fog layer, a frosting layer and a reflective rib layer, for example, the semi-permeable diffusion layer 40 is formed by overlapping a semi-permeable ink layer on the surface of the fog layer, the semi-permeable diffusion layer 40 is formed by overlapping a semi-permeable ink layer on the surface of the frosting layer, the semi-permeable diffusion layer 40 is formed by overlapping a reflective rib layer on the surface of the semi-permeable ink layer, and the like.

Of course, the semi-permeable diffusion layer 40 can also be formed by the semi-permeable ink layer, the fog layer, the frosting layer and the reflective rib layer, and the design and the requirement of the light emitting system on the semi-permeable diffusion layer 40 can be specifically determined.

Specifically, when the semi-permeable diffusion layer 40 is a semi-permeable ink layer, the semi-permeable diffusion layer 40 is formed by screen printing or film coating. The semi-permeable diffusion layer is convenient to manufacture, so that the manufacturing cost is reduced, and meanwhile, the diffusivity, the light shielding property and the light transmittance of the semi-permeable diffusion layer 40 can be guaranteed.

The desk lamp comprises the light emitting system. The desk lamp with the light-emitting system has the advantages of uniform illuminance, no glare and comfortable use.

Example one

As shown in fig. 2, the desk lamp has a long strip structure, and the diffuser plate 30 has a rectangular plate structure.

Example two

As shown in fig. 3, the desk lamp is an arc-shaped long structure, and the diffuser 30 is an arc-shaped long structure, and the user is located at the side of the center of the arc-shaped long structure.

It is to be understood that the above-described embodiments are only a few, and not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, shall fall within the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A lighting system, comprising:

a cover (10), the cover (10) having an opening;

the lamp panel assembly (20), the lamp panel assembly (20) is arranged on the inner side wall of the cover body (10);

the diffusion plate (30) is arranged at the opening, the diffusion plate (30) is provided with a light-emitting surface, and the light-emitting surface forms an irradiation area;

a semi-permeable diffusion layer (40), the semi-permeable diffusion layer (40) being disposed on the diffusion plate (30) such that the irradiation area is divided into a secondary diffusion area where the semi-permeable diffusion layer (40) is disposed and a direct irradiation area (50) where the semi-permeable diffusion layer (40) is not disposed.

2. The lighting system of claim 1, wherein the light panel assembly (20) is located on a side of the enclosure (10) away from a user.

3. The lighting system of claim 2, wherein the secondary diffusion region is proximate to the light panel assembly (20) relative to the direct projection region (50).

4. The lighting system according to claim 1, characterized in that the semi-permeable diffusion layer (40) is arranged on a side surface of the diffuser plate (30) facing the enclosure (10).

5. The light-emitting system according to claim 1, wherein the semi-transparent diffusion layer (40) has a thickness of 1 micron or more and 10 microns or less.

6. The lighting system according to any one of claims 1 to 5, wherein the housing (10) comprises a side wall and a top wall, at least one side edge of the top wall is connected with the side wall, and the lamp panel assembly (20) is disposed on the side wall or the top wall.

7. The lighting system according to claim 6, wherein the surface of the housing (10) facing the diffuser plate (30) is a light-reflecting surface.

8. The light-emitting system according to any one of claims 1 to 5, wherein a ratio of an area of the semi-permeable diffusion layer (40) to an area of the diffusion plate (30) is 1:3 or more and 2:3 or less.

9. A light emitting system according to any one of claims 1 to 5, characterized in that the entire area of the secondary diffusion region is provided with the semi-permeable diffusion layer (40).

10. The light-emitting system according to any one of claims 1 to 5, wherein the semi-permeable diffusion layer (40) is at least one of a semi-permeable ink layer, a matte layer, a frosted layer, and a reflective rib layer.

11. The light-emitting system of claim 10, wherein when the semi-permeable diffusion layer (40) is the semi-permeable ink layer, the semi-permeable ink layer is formed by silk-screen printing or film coating.

12. A desk lamp comprising the lighting system of any one of claims 1 to 11.