CN215215845U

CN215215845U - Anti-dazzle lighting device and classroom lamp

Info

Publication number: CN215215845U
Application number: CN202022599882.1U
Authority: CN
Inventors: 林友建; 徐日民; 聂彬彬; 谭之海; 张绍浜
Original assignee: Zhejiang Catching Lighting Technology Co ltd
Current assignee: Zhejiang Catching Lighting Technology Co ltd
Priority date: 2020-10-21
Filing date: 2020-11-12
Publication date: 2021-12-17
Anticipated expiration: 2030-11-12

Abstract

The utility model discloses an anti-dazzle lighting device, including light source subassembly and anti-dazzle subassembly, wherein, anti-dazzle subassembly includes two at least anti-dazzle worn-out fur, anti-dazzle worn-out fur is provided with the microarray of constituteing by a plurality of microstructures on one side of nearly play plain noodles. The utility model also discloses a classroom lamp. For the illumination lamps and lanterns of current grid screen panel need adopt the technology of electroplating to and for in the single anti-dazzle board in the prior art to the improvement of micro-structure, the utility model discloses an illumination lamps and lanterns just can satisfy the demand of anti-dazzle through the combination of at least two-layer anti-dazzle board, have reduced the processing degree of difficulty of anti-dazzle board, therefore the cost is lower relatively.

Description

Anti-dazzle lighting device and classroom lamp

Technical Field

The utility model relates to an illumination lamps and lanterns technical field, in particular to lighting device with anti-dazzle effect.

Background

"glare" is a phenomenon of poor illumination that occurs when the brightness of the light source is extremely high or the difference in brightness between the background and the center of the field of view is large. The "glare" phenomenon affects not only viewing, but also visual health.

Ugr (unified Glare rating), unified Glare value, is one of the main contents of illumination quality evaluation in lighting design. The smaller the UGR value is, the higher the comfort level is, the UGR 19 is a comfortable and uncomfortable threshold value, the UGR16 is a just acceptable value, and the UGR value requirement of classroom lamps for classroom illumination is not higher than 16.

The UGR value of the conventional classroom lamp is smaller than 16, and the UGR value is generally realized by an anti-dazzle plate and a grating mesh enclosure or an independent grating mesh enclosure. The lighting lamp with the grille net cover has the following two problems: 1. the grille net cover has good effect, but needs electroplating, and the process is expensive and pollutes the environment; 2. the anti-dazzle effect of the injection grid mesh enclosure is general and poor; 3. the cold visual feeling is given to people under the condition of no lighting.

Of course, in the technical field of anti-glare plate lighting lamps, a single anti-glare plate is adopted to achieve the anti-glare effect, and a single anti-glare plate is difficult to achieve UGR 16. Research on how to reduce the UGR value is mostly focused on improvement to the anti-dazzle microstructure, like CN 208351028U's utility model patent discloses an anti-dazzle diffuser plate with dual pyramid microstructure, realizes that the coincide reduces the effect of wide-angle light, reduces the harm of wide-angle light to the human body, can realize that the UGR value is less than 16 to satisfy the requirement of middle and primary schools classroom to the dizzy value. Most of the researches complicate the anti-glare microstructure, so that the processing technology of the anti-glare plate is increased, and the production cost is increased.

Therefore, there is an urgent need to provide a new lighting device with anti-glare effect.

SUMMERY OF THE UTILITY MODEL

The utility model provides an anti-dazzle lighting device can solve the above-mentioned defect among the prior art.

The technical scheme of the utility model as follows:

the utility model provides an anti-dazzle lighting device, includes light source subassembly and anti-dazzle subassembly, wherein, anti-dazzle subassembly includes two at least anti-dazzle boards, anti-dazzle board is provided with the microarray of constituteing by a plurality of microstructures near light-emitting surface one side.

The utility model discloses a two-layer anti-dazzle board can show the UGR value that reduces illumination lamps and lanterns, need adopt the technology of electroplating for the illumination lamps and lanterns of current grid screen panel to and for the improvement to the micro-structure in the anti-dazzle board of single-disc among the prior art, the utility model discloses an anti-dazzle board adopts the micro-structure commonly used, and the manufacturing process of anti-dazzle board is also simpler, has reduced the processing degree of difficulty, and consequently the cost is lower relatively.

Preferably, the microstructure is one of a cone, a triangular pyramid, a rectangular pyramid, a pentagonal pyramid, a hexagonal pyramid or an octagonal pyramid, or a combination thereof.

Preferably, when the microstructure is a tapered microstructure, the taper angle of the tapered structure is selected from 20 to 50 °, and further the taper angle of the tapered structure is preferably 25 to 45 °, which can significantly reduce the UGR value of the antiglare sheet.

Preferably, the two layers of anti-dazzle plates are connected in an abutting mode, the first anti-dazzle plate close to one side of the light source assembly reduces the light distribution angle of the original lambertian body, the second anti-dazzle plate on one side of the light emitting surface restrains large-angle light rays which are not reduced, and therefore the UGR value of the lighting device is controlled to be below 16.

Preferably, the taper angles of the tapered microstructures of the same anti-glare plate can be the same or different, the processing difficulty of the anti-glare plate can be reduced when the tapered microstructures of the same anti-glare plate have the same taper angle, the taper angles of the tapered microstructures of different anti-glare plates are different, and the effect of reducing the UGR value is achieved through the combination of the taper angles of the tapered microstructures of different anti-glare plates.

Preferably, the cone-shaped microstructures of the same anti-glare plate have the same cone angle, and the cone angles of the cone-shaped microstructures of different anti-glare plates are the same.

Preferably, in one sheet of the anti-glare plate, the distance between two adjacent conical structures is 0.01mm-3 mm.

Preferably, the number of the anti-dazzle plates is 2-5, and the UGR value of the lamp is further reduced through the combination of multiple layers of anti-dazzle plates.

Preferably, the anti-glare plate is arranged in parallel with the light-emitting surface.

Preferably, a diffusion plate is further disposed between the light source assembly and the anti-glare assembly.

Preferably, the microstructures of each anti-glare plate are arranged towards one side of the light-emitting surface.

A classroom lamp incorporating an anti-glare lighting device as described in any one of the above.

Compared with the prior art, the beneficial effects of the utility model are as follows:

first, the utility model discloses a lighting device and lamps and lanterns through setting up two anti-dazzle boards, can show the UGR value that reduces lighting device, for the illumination lamps and lanterns of the anti-dazzle board of current monolithic or the illumination lamps and lanterns that adopt grid technology screen panel, the utility model discloses need not use complicated toper micro-structure, also need not use expensive electroplating process to reduce the processing degree of difficulty of anti-dazzle board, promptly the utility model discloses a manufacturing process of lighting device and lamps and lanterns is simpler, and consequently the cost is lower relatively.

Secondly, the lighting device and the lamp of the utility model reduce the light distribution angle of the original lambertian body through the first anti-dazzle plate close to one side of the light source component, and inhibit the non-reduced large-angle light through the second anti-dazzle plate close to one side of the light emitting surface, thereby achieving the technical effect of reducing the UGR value; the UGR value can be controlled below 16 when the cone angles of the two anti-dazzle light plates are the same or different, and the lighting standard of the classroom lamp is met.

Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.

Drawings

Fig. 1 is an exploded view of a lighting device according to embodiment 1 of the present invention;

fig. 2 is a schematic front view of an antiglare sheet according to embodiment 1 of the present invention;

fig. 3 is a schematic side view of an antiglare sheet according to embodiment 1 of the present invention;

fig. 4 is a light distribution curve diagram of a single glare panel according to embodiment 1 of the present invention;

fig. 5 is a light distribution curve diagram of the lighting device according to embodiment 1 of the present invention;

fig. 6(a) -6 (E) are schematic diagrams of different microstructures of the antiglare sheet of example 1 of the present invention;

fig. 7 is a schematic view of a cone angle structure of an antiglare plate microstructure according to embodiment 1 of the present invention;

fig. 8 is a graph of the relationship between different angles of the microstructure and the UGR value in embodiment 1 of the present invention;

fig. 9 is a light distribution graph of the non-glare plate according to embodiment 1 of the present invention;

fig. 10 is a schematic view of the overall structure of a classroom lamp according to embodiment 2 of the present invention;

fig. 11 is another overall structural diagram of the classroom lamp of embodiment 2 of the present invention;

fig. 12 is a flow chart of a manufacturing process of an antiglare sheet according to embodiment 3 of the present invention;

fig. 13 is another flowchart of the manufacturing process of the mold for an anti-glare plate according to embodiment 3 of the present invention.

Reference numerals: an anti-glare assembly 1; a light source assembly 2; a housing 3; a second antiglare plate 11; the first antiglare sheet 12.

Detailed Description

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The present invention will be further described with reference to the following specific examples.

Example 1

The embodiment provides an anti-glare lighting device, referring to fig. 1 to 9, the lighting device includes a light source assembly 2 and an anti-glare assembly 1, where the anti-glare assembly 1 includes two anti-glare plates, and a micro array composed of a plurality of microstructures is disposed on one side of a light-emitting surface of each anti-glare plate. The UGR value of the lighting fixture can be obviously reduced through the two layers of anti-dazzle plates, and the UGR value is reduced to be not higher than 16. For the illumination lamps and lanterns of current grid screen panel and the illumination lamps and lanterns that have the anti-dazzle board of monolithic, two anti-dazzle boards are adopted to this embodiment, and the manufacturing process of anti-dazzle board is simpler, has reduced the processing degree of difficulty, therefore the cost is lower relatively.

The embodiment takes a pyramid microstructure as an example, the light source assembly 2 is assembled in a housing 3, the anti-glare assembly 1 is assembled at an opening of the housing 3, the two layers of anti-glare plates are connected in an abutting manner, the first anti-glare plate 12 close to one side of the light source assembly reduces the light distribution angle of the original lambertian body, the second anti-glare plate 11 on one side of the light outlet surface restrains the non-reduced large-angle light, and the light paths and light distribution curve diagrams of the one anti-glare plate and the two anti-glare plates are shown in fig. 4 and 5. Of course, in other embodiments, the microstructure may also be selected from one of a triangular pyramid, a pentagonal pyramid, a hexagonal pyramid, or an octagonal pyramid, or a combination thereof, as shown in fig. 6(a) -6 (E), which are schematic diagrams showing several specific embodiments of the microstructure, and the microstructure may be selected according to the actual manufacturing process.

The distance between the adjacent conical structures of the first anti-dazzle plate close to one side of the light source component 2 is 0.1mm, and the distance between the conical structures of the outer anti-dazzle plate is 1 mm. Moreover, the plurality of microstructures of the two anti-glare plates are arranged towards one side of the light-emitting surface, and only the microstructures arranged towards one side of the light-emitting surface have the function of inhibiting light.

In the present embodiment, the taper angle α of the rectangular pyramid is 20 ° to 50 °, and the taper angle α of the polygonal pyramid refers to the angle between the slope of the pyramid and the polygonal base, as shown in fig. 7. The UGR values corresponding to different taper angles were tested in the present example, as shown in fig. 8, in which the UGR value was significantly reduced when the taper angle was 25 ° to 45 °, and the UGR value of the antiglare sheet was the lowest when the taper angle was 30 ° to 35 °.

Specifically, the taper angles of the tapered microstructures of the same anti-glare plate layer can be the same or different, and when the tapered microstructures of the same anti-glare plate layer have the same taper angle, the processing difficulty of the anti-glare plate can be reduced. In some embodiments, the taper angles of the tapered microstructures of different anti-glare plates are different, and in some embodiments, the taper angles of the tapered microstructures of different anti-glare plates can also be the same, so that the UGR value of the lighting device is reduced to be below 16 by the combination of the taper angles of the tapered microstructures of the two anti-glare plates.

In the embodiment, the anti-glare plate is provided with two pieces, of course, in other embodiments, the number of the anti-glare plates is 3-5 layers, the UGR value of the lighting device is further reduced through the combination of the anti-glare plates, and the number of the anti-glare plates and the conical microstructure can be selected according to the actual production process and cost control.

The lighting device in this embodiment further includes a diffusion plate 4, as shown in fig. 1, wherein the diffusion plate 4 is disposed between the light source assembly 2 and the anti-glare assembly 1, and the diffusion plate 4 is disposed in parallel with the light exit surface to diffuse the point light source into the surface light source.

The embodiment has tested when the illumination lamps and lanterns do not set up anti-dazzle board, set up a slice anti-dazzle board and set up the UGR value of two anti-dazzle boards, and the test result is shown as table one:

watch 1

Remarking:

1. this data is based on a common flat lamp with 545mm x 545mm light emitting surface.

2. This UGR calculation was calculated based on international standard 4H 8H-705020.

3. There may be a variation of + -0.5 in the UGR values for different flat panel light fixtures.

5.4H8H752 UGR @1000 and 4H8H752 UGR @3200 are setting conditions of UGR values, that is, only the antiglare plate is changed under the condition that other conditions are not changed.

Therefore, the two-piece anti-dazzle plate can reduce the UGR value of the lighting device to be below 16, so that the lighting device meets the standard of a classroom lamp. Because the configuration of two anti-dazzle boards can realize the control to UGR, consequently need not carry out complicated design to the microstructure of monolithic anti-dazzle board, also need not use the electroplating process in the grid screen panel, consequently, the processing degree of difficulty of anti-dazzle subassembly can be reduced to this embodiment to reduce lighting device's manufacturing cost. The schematic light path diagrams and light distribution graphs of the non-anti-glare plate, the single-plate anti-glare plate and the double-plate anti-glare plate are respectively shown in fig. 9, 4 and 5.

Example 2

This embodiment provides a classroom lamp including the anti-glare lighting device of embodiment 1, see fig. 10 and 11, wherein the classroom lamp is secured to the ceiling of a classroom room by a boom assembly. The anti-glare assembly 1 may be fixed to the housing by screws and the frame to form a light emitting surface of the lighting device. The UGR value can be controlled below 16 by the two anti-dazzle plates, and the anti-dazzle plates meet the relevant standard.

Example 3

The embodiment provides a method for manufacturing an anti-glare plate, comprising the following steps: providing an anti-dazzle plate, wherein a microarray consisting of a plurality of microstructures is arranged on one side of the anti-dazzle plate; the anti-dazzle illuminating device comprises a light source assembly and an anti-dazzle assembly, wherein the anti-dazzle assembly comprises at least two anti-dazzle plates, and the microstructures of the anti-dazzle plates are arranged towards one side of the light emitting surface.

Referring to fig. 12 and 13, a process flow chart of the method for manufacturing the antiglare sheet of the present embodiment is shown. In this embodiment, the method for manufacturing an antiglare sheet mainly includes:

step S1: the microstructure is processed on a mould, such as a roller, by adopting any one of the technologies of laser direct etching, chemical corrosion, CNC processing and photoetching. Of course, other methods are possible and not limited herein.

The laser direct etching is processed by utilizing the photo-thermal effect, wherein the energy of light is focused by a lens to reach high energy density at a focus. The laser processing does not need tools, has high processing speed and small surface deformation, and can process various materials. The material is subjected to various processes such as punching, cutting, scribing, welding, heat treatment, etc. with a laser beam. Some matter with metastable state energy level can absorb light energy under the excitation of external photon, so that the number of atoms in high energy level is greater than that of atoms in low energy level, i.e. particle number inversion, and if one beam of light irradiates, the energy of the photon is equal to the corresponding difference of the two energies, then stimulated radiation can be generated, and a large amount of light energy can be output. And the film product is manufactured by the laser processed die through the processes of electroplating, UV transfer printing and the like.

Chemical etching refers to a process in the materials industry in which workpieces such as metal, glass, etc. are etched with chemicals or etched and ground in combination to achieve a certain shape, size, and surface finish. Such as scribing lines with a strong acid etch, grinding the workpiece surface with a chromium oxide chemical paste, etc.

The microstructure can also be processed on a mold by a photolithography technique to provide a photoresist-coated photoresist plate, comprising the steps of: s1.1, converting a plurality of microstructures into a machine language and inputting the machine language into a photoetching machine; s1.2, outputting an ultraviolet pattern based on the microstructure by a photoetching machine to irradiate a photoresist plate, and reacting the photoresist with ultraviolet; s1.3, removing the photoresist which has reacted with ultraviolet rays on the photoresist plate through a developing solution to form the photoresist plate with a microstructure; s1.4 a photoresist plate based mold is manufactured by an electroforming process.

In this embodiment, the material of the mold is nickel, and the mold is manufactured by electrodepositing nickel on the photoresist plate, but in other embodiments, the material may be other materials, and is not limited herein.

Step S3: the microstructure on the mold is transferred to the body by a UV transfer technique. Specifically, firstly, coating a layer of UV glue on a mold, taking a piece of body to be pasted on the UV glue of the mold, then pressing the body and the mold through a roll shaft, then putting the body and the mold into a light curing machine for curing, and finally demolding the body to obtain the anti-dazzle light plate. In other embodiments, the microstructure on the mold may also be transferred to the body by extrusion or thermoforming or printing processes.

Further, in this embodiment, the method for manufacturing the antiglare sheet is described by using a roller as an example as follows:

s1, processing a plurality of microstructures on a roller; the microstructure can be processed on the roller by any one of processing methods of laser direct etching, chemical corrosion, CNC (computer numerical control) processing and photoetching, and other methods can be adopted without limitation; s2, carrying out surface treatment on the roller; and S3, transferring the microstructure on the roller onto the body by using a UV transfer printing technology, an extrusion molding technology, a hot press molding technology or a printing technology.

Wherein, step S3 includes: assembling the body parallel to the roller, coating a layer of UV glue on the roller or the body, uniformly coating the UV glue on the body by mutual extrusion of the roller and the body, curing by a light curing machine, and finally separating the body from the roller to obtain the anti-dazzle light plate.

In another embodiment, step S3 includes: adding optical material such as PS PET PCTG PC PMMA into hopper, heating to molten state, extruding from roller press under pressure by extruder, and cooling to form.

Compared with the existing grid mesh enclosure and a single anti-dazzle plate with a complex microstructure, the processing technology of the anti-dazzle plate reduces the processing difficulty of the anti-dazzle plate, so that the production cost can be effectively reduced.

The above disclosure is only illustrative of the preferred embodiments of the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. It should be understood that these examples are only for illustrating the present invention, and are not intended to limit the scope of the present invention. In practical applications, the improvement and adjustment made by those skilled in the art according to the present invention still belong to the protection scope of the present invention.

Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical application, to thereby enable others skilled in the art to best utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. The anti-dazzle illuminating device is characterized by comprising a light source component and an anti-dazzle component, wherein the anti-dazzle component comprises at least two anti-dazzle plates, and a microarray consisting of a plurality of microstructures is arranged on one side, close to a light emitting surface, of each anti-dazzle plate.

2. The anti-glare lighting device of claim 1, wherein the microstructures are one of cones, triangular pyramids, rectangular pyramids, pentagonal pyramids, hexagonal pyramids, or octagonal pyramids, or a combination thereof.

3. The anti-glare lighting device of claim 1, wherein when the microstructures are tapered microstructures, the taper angle of the tapered structures is selected from 20 ° to 50 °.

4. The anti-glare lighting device of claim 1, wherein when the microstructures are tapered microstructures, the taper angle of the tapered structures is selected from the range of 25 ° to 45 °.

5. The antiglare illumination device of claim 3 or 4, wherein the tapered microstructures of the same antiglare plate have the same taper angle, and the taper angles of the tapered microstructures of different antiglare plates are different.

6. The antiglare illumination device of claim 3 or 4, wherein the tapered microstructures of the same antiglare plate have the same taper angle, and the taper angles of the tapered microstructures of different antiglare plates are the same.

7. The antiglare illumination device of claim 3 or 4, wherein in one sheet of the antiglare plate, a pitch between adjacent two of the tapered microstructures is 0.01mm to 3 mm.

8. The anti-glare lighting device of claim 1, further comprising a diffuser plate disposed between the light source assembly and the anti-glare assembly.

9. The anti-glare lighting device according to claim 1, wherein the number of the anti-glare plate is 2 to 5 layers, and the UGR value of the lamp is further reduced by the combination of the plurality of layers of the anti-glare plates.

10. The anti-glare lighting device according to claim 1, wherein the microstructures of each of the anti-glare plates are arranged toward the light exit surface.

11. A classroom lamp comprising the antiglare illumination device of any one of claims 1-10.