CN218895329U - Anti-dazzle light-transmitting plate and classroom lamp - Google Patents

Abstract

The application is applicable to the technical field of lighting equipment, and particularly provides an anti-dazzle light-transmitting plate and a classroom lamp, wherein the anti-dazzle light-transmitting plate comprises a substrate, the substrate is provided with a light incident surface and a light emergent surface, and the light emergent surface is formed by a refraction unit surface; the refraction unit surface comprises four refraction surfaces and surrounds a refraction groove; the four refraction surfaces comprise a first refraction surface and a second refraction surface which are oppositely arranged, and a third refraction surface and a fourth refraction surface which are oppositely arranged; the first refraction surface and the second refraction surface are intersected, the intersection line is a first intersection line, the first intersection line is a groove bottom line, and the first intersection line is parallel to the light incident surface; the third refraction surface and the fourth refraction surface are arranged at intervals and are intersected with the first refraction surface and the second refraction surface; the light rays which are emitted from the light incident surface and are emitted through the first refraction surface, the second refraction surface, the third refraction surface and the fourth refraction surface are deflected towards the side where the first intersection line is located. Solves the technical problems of poor anti-dazzle effect of common classroom lamps, pollution of grille classroom lamps to the environment and low light efficiency in the prior art.

Description

Anti-dazzle light-transmitting plate and classroom lamp

Technical Field

The application relates to the technical field of lighting equipment, in particular to an anti-dazzle light-transmitting plate and a classroom lamp.

Background

The classroom lamp is often used for illumination in the classroom, but the anti-dazzle effect of ordinary classroom lamp is relatively poor, and light is shot into the teacher or student's eyes, causes discomfort, and grid-type classroom lamp is because of its anti-dazzle effect is good, is widely used for school classroom illumination. However, the adopted grids need to be electroplated, so that the environmental pollution is high. The grille has larger aperture, but has lower light effect due to shielding too much light although good physical anti-dazzle effect is achieved due to higher baffle height.

Disclosure of Invention

The purpose of this application is to provide an anti-dazzle light-transmitting plate and classroom lamp, and it is poor to aim at solving ordinary classroom lamp anti-dazzle effect that exists among the prior art, and grid classroom lamp causes the technical problem that pollutes and the light efficiency is low to the environment.

In order to achieve the above purpose, the technical scheme adopted in the application is as follows:

in a first aspect, an antiglare light-transmitting panel is provided, the antiglare light-transmitting panel comprising a substrate having a light-entry face and a light-exit face, the light-exit face being formed by a plurality of refractive element faces;

the refraction unit surface comprises four refraction surfaces, and the four refraction surfaces enclose a refraction groove;

the four refraction surfaces comprise a first refraction surface and a second refraction surface which are arranged oppositely and a third refraction surface and a fourth refraction surface which are arranged oppositely and enclose a refraction groove;

the first refraction surface and the second refraction surface are intersected, the intersection line is a first intersection line, the first intersection line is the bottom line of the refraction groove, and the first intersection line is parallel to the light incident surface;

the third refraction surface and the fourth refraction surface are arranged at intervals and are intersected with the first refraction surface and the second refraction surface, and light rays which are shot in from the light incidence surface and are shot out through the first refraction surface, the second refraction surface, the third refraction surface and the fourth refraction surface can deflect towards the side where the first intersection line is located.

In one embodiment of the first aspect, an angle a between the first refractive surface and the second refractive surface is 110 ° to 130 °.

In one embodiment of the first aspect, the virtual plane perpendicular to the light incident surface is a plane M, and the first intersecting line is on the plane M, and the first refractive surface and the second refractive surface are symmetrical about the plane M.

In one embodiment of the first aspect, the plane M is perpendicular to both the third refractive surface and the fourth refractive surface, an intersection line of the plane M with the third refractive surface and the fourth refractive surface is a second intersection line, and an included angle b between the second intersection line and the first intersection line is 140 ° to 160 °.

In one embodiment of the first aspect, the first refractive surface and the second refractive surface are isosceles trapezoid surfaces, and the first intersecting line is a shorter side of the isosceles trapezoid surfaces.

In one embodiment of the first aspect, the third refractive surface and the fourth refractive surface have the same shape and are both isosceles triangle surfaces, and a waist edge of the isosceles triangle surface coincides with a waist edge of the isosceles trapezoid surface and is an intersection line of the isosceles triangle surface and the isosceles trapezoid surface.

In one embodiment of the first aspect, the longer side of the isosceles trapezoid surface and the bottom side of the isosceles triangle surface form a rectangle and are on the same plane N, the plane N is parallel to the light incident surface, the longer side L1 of the isosceles trapezoid surface is 9.2 mm-11.2 mm, and the bottom side L2 of the isosceles triangle surface is 3.1 mm-3.9 mm.

In one embodiment of the first aspect, a distance L3 between the first intersecting line and the plane N is 0.8mm to 1.2mm, and a waist edge length L4 of the isosceles triangle surface is 2.3mm to 2.9mm.

In one embodiment of the first aspect, a distance L5 between the first intersecting line and the light incident surface is 0.2mm to 2mm.

In a second aspect, the present application also provides a classroom lamp, which is provided with the antiglare light-transmitting panel according to the above embodiment.

Compared with the prior art, the anti-dazzle light-transmitting plate and the classroom lamp provided by the application have the advantages that the light-emitting surface of the anti-dazzle light-transmitting plate is provided with a plurality of refraction unit surfaces, the refraction unit surfaces are composed of four refraction surfaces, the four refraction surfaces are respectively a first refraction surface, a second refraction surface and a third refraction surface and a fourth refraction surface which are oppositely arranged, the four refraction surfaces form refraction grooves, light rays which are emitted from the light-emitting surface of the substrate are refracted and deflected, the bottoms of the first refraction surface and the second refraction surface are intersected, a certain interval is arranged between the third refraction surface and the fourth refraction surface, specifically, when the light rays are emitted from the refraction grooves, the light rays passing through the first refraction surface and the second refraction surface are deflected towards the side where the first intersection line is located, so that the beam angles of the light rays in the direction perpendicular to the first intersection line are reduced, namely, the light rays can be converged to a certain extent, the light passing through the third refraction surface and the fourth refraction surface is deflected towards the side where the first intersection line is located, so that the beam angle of the light in the direction parallel to the first intersection line is reduced, namely the light is converged to a certain extent, the light is restrained in both directions, glare is reduced, the first refraction surface and the second refraction surface are adjacently arranged, and the third refraction surface and the fourth refraction surface are arranged at intervals and have a certain distance, so that the quantity of the first refraction surface and the second refraction surface in unit length is more, the restraining effect on the light in the direction perpendicular to the first intersection line is better, the direction perpendicular to the first intersection line can be the sight line direction of students, the direct irradiation of the light to eyes of students is avoided, the restraining effect on the light in the direction parallel to the first intersection line is relatively lower, but the classroom can be better illuminated in the direction parallel to the first intersection line, the anti-dazzle light-transmitting plate provided by the application reduces dazzle light, avoids pollution, and simultaneously does not generate light loss and reduces light efficiency because of no light blocking plate for blocking light.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following description will briefly introduce the drawings that are needed in the embodiments or the description of the prior art, it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of an antiglare light-transmitting panel according to an embodiment of the present application;

FIG. 2 is a schematic view of the refractive element face of FIG. 1;

FIG. 3 is a cross-sectional view of the face of the refractive element of FIG. 2 taken along plane M;

FIG. 4 is a light path diagram in a direction perpendicular to the first intersection line;

fig. 5 is a light path diagram in a direction parallel to the first intersecting line.

In the figure, 1, a substrate; 2. a light incident surface; 3. a refractive element face; 4. a first refractive surface; 5. a second refraction surface; 6. a third refractive surface; 7. a fourth refractive surface; 8. a first intersecting line; 9. a second intersecting line; 10. plane M.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved by the present application more clear, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise. The meaning of "a number" is one or more than one unless specifically defined otherwise.

In the description of the present application, it should be understood that the terms "center," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships that are based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

Referring to fig. 1, 2 and 3, the present application provides a specific embodiment of an antiglare light-transmitting panel, in this embodiment, the antiglare light-transmitting panel includes a substrate 1, the substrate 1 has a light-incident surface 2 and a light-emergent surface, and the light-emergent surface is formed by a plurality of refraction unit surfaces 3;

the refraction unit surface 3 comprises four refraction surfaces, and four refraction surfaces enclose a refraction groove;

the four refraction surfaces comprise a first refraction surface 4 and a second refraction surface 5 which are arranged oppositely and a third refraction surface 6 and a fourth refraction surface 7 which are arranged oppositely and enclose a refraction groove;

the first refraction surface 4 and the second refraction surface 5 are intersected, the intersection line is a first intersection line 8, the first intersection line 8 is the groove bottom line of the refraction groove, and the first intersection line 8 is parallel to the light incident surface 2;

the third refraction surface 6 and the fourth refraction surface 7 are arranged at intervals and are intersected with the first refraction surface 4 and the second refraction surface 5, and the light rays which enter from the light entering surface 2 and are emitted by the first refraction surface 4, the second refraction surface 5, the third refraction surface 6 and the fourth refraction surface 7 can deflect towards the side of the first intersection line 8.

Specifically, the substrate 1 in the present embodiment may be made of a plastic material, which has light transmittance, and the shape of the substrate 1 is a flat plate structure, and the other surfaces except the light-emitting surface are flat surfaces, wherein the light-entering surface 2 and the light-emitting surface are two largest surfaces disposed opposite to each other.

The light incident surface 2 is a flat surface, the anti-dazzle light-transmitting plate is arranged on a studio lamp, and light rays pass through the anti-dazzle light-transmitting plate before being emitted, specifically, the light rays are emitted from the light incident surface 2 and then emitted from the light emitting surface. Is emitted through the refraction unit surface 3 on the light emitting surface.

The refraction unit surface 3 is arranged on the light-emitting surface of the substrate 1 and is fully distributed on the light-emitting surface, specifically, the refraction unit surface 3 is arranged in a mode of being in a plurality of rows and columns on the light-emitting surface, the refraction unit surface is arranged in a close fit mode in two directions, gaps are not formed in the middle, the refraction unit surface is aligned with each other in the two directions, and the whole light-emitting surface is fully distributed, so that light emitted through the light-emitting surface can be emitted after passing through one refraction unit surface 3.

When passing through a certain refraction unit surface 3, the light rays entering the first refraction surface 4 and the second refraction surface 5 of the refraction unit surface 3 deflect towards the side where the first intersection line 8 of the two refraction unit surfaces is located, which is equivalent to certain convergence of the light rays, and the first refraction surface 4 and the second refraction surface 5 are densely distributed and are adjacently arranged, so that the light rays are effectively restrained in the direction perpendicular to the first intersection line 8, and the direction perpendicular to the first intersection line 8 can be the sight line direction of a student, so that the light rays are prevented from being directly irradiated into eyes of the student.

The light rays entering the third refraction surface 6 and the fourth refraction surface 7 of the refraction unit surface 3 are deflected towards the first intersection line 8, which is equivalent to that the light rays are converged to a certain extent in the direction parallel to the first intersection line 8, glare is avoided to a certain extent, but because the third refraction surface 6 and the fourth refraction surface 7 are arranged at intervals and are relatively sparse, the inhibition effect on the light rays is relatively low in the direction parallel to the first intersection line 8, but because the sight line of students is perpendicular to the direction, the antiglare effect is not influenced, the classroom can be better illuminated in the direction, and the light efficiency is increased.

And since the effective suppression of light is achieved in the direction perpendicular to the first intersection line 8, the suppression effect is lower in the direction parallel to the first intersection line 8, so that the beam angle in the direction perpendicular to the first intersection line 8 is relatively smaller, and the light is prevented from being directly irradiated to eyes of students.

Compared with the prior art, the light-emitting surface of the antiglare light-transmitting plate provided by the embodiment has a plurality of refraction unit surfaces 3, the refraction unit surfaces 3 are composed of four refraction surfaces, the four refraction surfaces are respectively a first refraction surface 4, a second refraction surface 5 which are oppositely arranged, a third refraction surface 6 and a fourth refraction surface 7 which are oppositely arranged, the four refraction surfaces form refraction grooves, light rays which are emitted from the light-emitting surface 2 of the substrate 1 are refracted and deflected, wherein the bottoms of the first refraction surface 4 and the second refraction surface 5 are intersected, a certain interval is reserved between the third refraction surface 6 and the fourth refraction surface 7, specifically, when the light rays are emitted from the refraction grooves, the light rays which pass through the first refraction surface 4 and the second refraction surface 5 are deflected towards the side of a first intersection line 8, so that the beam angle of the light rays in the direction perpendicular to the first intersection line 8 is reduced, namely, the light rays are converged to a certain extent, the light passing through the third refraction surface 6 and the fourth refraction surface 7 is deflected towards the side of the first intersection line 8, so that the beam angle of the light in the direction parallel to the first intersection line 8 is reduced, namely the light is converged to a certain extent, the light is restrained in both directions, glare is reduced, the first refraction surface 4 and the second refraction surface 5 are adjacently arranged, the third refraction surface 6 and the fourth refraction surface 7 are arranged at intervals and have a certain distance, the quantity of the first refraction surface 4 and the second refraction surface 5 in unit length is more, the restraining effect on the light in the direction perpendicular to the first intersection line 8 is better, the direction perpendicular to the first intersection line 8 can be the sight line direction of students, the light is prevented from being directly irradiated to eyes of students, the restraining effect on the light in the direction parallel to the first intersection line 8 is relatively lower, but in the illumination classroom that is on a parallel with 8 directions of first intersection, increased the light efficiency, so the anti-dazzle light-transmitting plate that this application provided has reduced and has dazzled the light, avoided the pollution, simultaneously because there is not the barn door to block light, do not produce light loss, do not reduce the light efficiency.

As shown in fig. 2, as a preferred embodiment of the antiglare light-transmitting panel according to the present embodiment, the angle a between the first refractive surface 4 and the second refractive surface 5 is 110 ° to 130 °. Preferably 120.51 DEG

Specifically, the first refractive surface 4 and the second refractive surface 5 are oppositely arranged, and intersect with each other, the intersection line is a first intersection line 8, and an included angle between the two, that is, an included angle between the two intersecting at the first intersection line 8, and the included angle a is preferably 120.51 °.

The effect of this embodiment is that at this angle, the light can be deflected moderately so that the light does not diverge, so that there is a proper beam angle in the direction perpendicular to the first intersection line 8, to prevent glare from occurring and to prevent the light from shining into the eyes of the student.

As shown in fig. 2, further, the virtual plane perpendicular to the light incident surface 2 is a plane M10, and the first intersecting line 8 is on the plane M10, and the first refractive surface 4 and the second refractive surface 5 are symmetrical with respect to the plane M10.

In particular, the present embodiment provides a preferred layout form of the first refractive surface 4 and the second refractive surface 5, and for convenience of description of the positions of the two, the present embodiment provides a virtual surface, that is, the plane M10, and the plane M10 does not actually exist, and the present embodiment only describes the positions of the first refractive surface 4 and the second refractive surface 5 more conveniently by means of the present embodiment.

As shown in fig. 2, the plane M10 is defined as a plane perpendicular to the light incident surface 2, and the first refractive surface 4 and the second refractive surface 5 are symmetrical with respect to the plane M10 through the first intersection line 8, i.e. the first intersection line 8 is on the plane M10, so that the angles between the first refractive surface 4 and the second refractive surface 5 and the light incident surface 2 are equal, and the deflection angles of the light deflected through the first refractive surface 4 and the second refractive surface 5 are the same, so that the light is more uniform.

As shown in fig. 2, as a preferred embodiment of the antiglare light-transmitting panel according to this embodiment, the plane M10 is perpendicular to both the third refractive surface 6 and the fourth refractive surface 7, an intersection line of the plane M10 with the third refractive surface 6 and the fourth refractive surface 7 is a second intersection line 9, and an included angle b between the second intersection line 9 and the first intersection line 8 is 140 ° to 160 °.

In particular, at the same time the present embodiment also makes a further definition of the position of the third and fourth refractive surfaces 6, 7 according to the plane M10, i.e. the present embodiment provides a preferred layout of the third and fourth refractive surfaces 6, 7.

As shown in fig. 2, the third refractive surface 6 and the fourth refractive surface 7 are perpendicular to the plane M10, the plane M10 and the third refractive surface 6 and the fourth refractive surface 7 have intersecting lines, and are second intersecting lines 9, and an included angle b between the second intersecting lines 9 and the first intersecting lines 8 is 140 ° to 160 °. Preferably 150.26.

The effect of this embodiment is that, since the third refraction surface 6 and the fourth refraction surface 7 are disposed at intervals, and the second intersection line 9 and the first intersection line 8 on the third refraction surface 6 and the fourth refraction surface 7 have equal angles, the angles are preferably 150.26 °, the third refraction surface 6 and the fourth refraction surface 7 are perpendicular to the plane M10, which is equivalent to the equal angles between the third refraction surface 6 and the fourth refraction surface 7 and the first intersection line 8, that is, the light incident surface 2, and the angles between the third refraction surface 6 and the fourth refraction surface 7 and the first refraction surface 4 and the second refraction surface 5 are also equivalent to the same angles, which is equivalent to the arrangement of the first refraction surface 4 and the second refraction surface 5, so that when the light incident on the light incident surface 2 is emitted from the third refraction surface 6 and the fourth refraction surface 7, the deflection angles of the light emitted from the third refraction surface 6 and the fourth refraction surface 7 are the same, so that the light is more uniform, and the light is converged toward the direction of the first intersection line 8, which is also avoided from glare to a certain extent. The included angle is 150.26 degrees, which is proper, so that proper deflection of light is ensured.

As shown in fig. 2, as a preferred embodiment of the antiglare light-transmitting panel according to this embodiment, the first refractive surface 4 and the second refractive surface 5 are isosceles trapezoid surfaces, and the first intersection line 8 is a shorter side of the isosceles trapezoid surfaces.

Specifically, the first refraction surface 4 and the second refraction surface 5 are isosceles trapezoid surfaces, two waist edges of the isosceles trapezoid surfaces are equal, a longer edge and a shorter edge are provided besides the waist edges, the first intersection line 8 is the intersecting shorter edge of the two isosceles trapezoid surfaces, the isosceles trapezoid surfaces are inverted, and the isosceles trapezoid surfaces become larger from bottom to top in sequence. This enables connection, i.e. intersection, with the third refractive surface 6 and the fourth refractive surface 7.

Further, the third refractive surface 6 and the fourth refractive surface 7 are the same shape and are isosceles triangle surfaces, and the waist edge of the isosceles triangle surface coincides with the waist edge of the isosceles trapezoid surface and is the intersection line of the isosceles triangle surface and the isosceles trapezoid surface.

The third refraction surface 6 and the fourth refraction surface 7 are identical in shape and are isosceles triangle surfaces, so that the third refraction surface 6 and the fourth refraction surface 7 can be assembled between the first refraction surface 4 and the second refraction surface 5 in an adaptive manner, tight-thread joint connection is achieved, the refraction unit surfaces 3 capable of refracting light are formed together, and then a refraction groove is formed.

In one embodiment, as shown in fig. 2, the longer side of the isosceles trapezoid surface and the bottom side of the isosceles triangle surface form a rectangle and are on the same plane N, and the plane N is parallel to the light incident surface 2, the longer side L1 of the isosceles trapezoid surface is 9.2 mm-11.2 mm, and the bottom side L2 of the isosceles triangle surface is 3.1 mm-3.9 mm.

Specifically, the groove bottom line of the refraction groove is a shorter side of two isosceles trapezoid surfaces, the longer side of the two isosceles trapezoid surfaces and the bottom side of the two isosceles triangle surfaces form the groove top side of the refraction groove, on the same plane, the plane is defined as a plane N, the plane N is also a virtual surface, the plane N is parallel to the light incident surface 2, light rays are emitted to the first refraction surface 4 and the second refraction surface 5 at the same angle, light rays are emitted to the third refraction surface 6 and the fourth refraction surface 7 at the same angle, and the light ray deflection directions are the same.

The longer side L1 of the isosceles trapezoid surface is 9.2 mm-11.2 mm, preferably 10.4mm; the base L2 of the isosceles triangle surface is 3.1mm to 3.9mm, preferably 3.5mm. The shorter side of the isosceles trapezoid surface, i.e. the length of the first intersection line 8, is preferably 6.9mm.

As shown in fig. 2 and 3, further, a distance L3 between the first intersecting line 8 and the plane N is 0.8mm to 1.2mm, and a waist edge length L4 of the isosceles triangle surface is 2.3mm to 2.9mm.

Specifically, since the first intersecting line 8 is parallel to the light incident surface 2, the plane N is also parallel to the first intersecting line 8, so that the distance between the first intersecting line 8 and the plane N, that is, the groove depth of the refraction groove, is specifically 0.8mm to 1.2mm, preferably 1mm. The length of the waist edge of the isosceles triangle surface is 2.3 mm-2.9 mm, namely the waist length of the isosceles trapezoid surface is preferably 2.67mm.

In one embodiment, a distance L5 between the first intersection line 8 and the light incident surface 2 is 0.2mm to 2mm. Preferably 1.5mm, i.e. 1.5mm in thickness after removal of the refractive grooves of the substrate 1. The present embodiment provides a refraction tank and a specific size of the substrate 1, which is convenient to arrange.

The antiglare transparent panel provided in this embodiment finally achieves that, because the light is well suppressed in the direction perpendicular to the first intersection line 8, the beam angle is kept between 95 ° and 110 °, preferably 103 °, and the light intensity at the angle of 60 ° with the strongest light in the center of the beam angle is 0.2 to 0.3 times, preferably 0.28, the light intensity of the strongest light.

The light is also suppressed to a certain extent in the direction parallel to the first intersection line 8, the beam angle being kept between 105 and 120 °, preferably 117 °, and the light intensity at an angle of 60 ° to the strongest light in the centre of the beam angle being between 0.4 and 0.5, preferably 0.46, times the strongest light intensity.

The direction of the human eyes is perpendicular to the first intersection line 8, so that the large-angle light intensity is greatly inhibited and the glare is reduced in the visual observation direction of the human eyes. Whereas in directions not observed by the line of sight, the beam angle is relatively large, which improves the illumination uniformity.

Specifically, the light path diagrams of the light rays when passing through the refraction unit face 3 provided by the present embodiment are fig. 4 and 5;

in fig. 4, in the direction perpendicular to the first intersection line 8, when the light passes through the first refraction surface 4 and the second refraction surface 5, the light is converged toward the direction of the first intersection line 8, so that the light is well suppressed.

In fig. 5, in the direction parallel to the first intersection line 8, when the light passes through the third refractive surface 6 and the fourth refractive surface 7, the light is also converged toward the direction of the first intersection line 8, and the light is also suppressed to some extent.

In a second aspect, the present application further provides a specific embodiment of a classroom lamp, where the classroom lamp is provided with the antiglare light-transmitting panel described in the above embodiment.

Specifically, the studio light may adopt two schemes of direct type or side entry type.

Direct type composition: back cover, light source board, diffusion board, antiglare transparent board, power supply drive, etc.

Composition of side entry: the anti-dazzle light source comprises a frame, a light source plate, a reflecting plate, a light guide plate, a diffusion plate, an anti-dazzle light-transmitting plate, a power supply driver and the like.

The foregoing description of the preferred embodiments of the present application is not intended to be limiting, but is intended to cover any and all modifications, equivalents, and alternatives falling within the spirit and principles of the present application.

Claims (10)

1. The anti-dazzle light-transmitting plate is characterized by comprising a substrate, wherein the substrate is provided with a light-in surface and a light-out surface, and the light-out surface is formed by a plurality of refraction unit surfaces;

the refraction unit surface comprises four refraction surfaces, and the four refraction surfaces enclose a refraction groove;

the four refraction surfaces comprise a first refraction surface and a second refraction surface which are arranged oppositely and a third refraction surface and a fourth refraction surface which are arranged oppositely and enclose a refraction groove;

the first refraction surface and the second refraction surface are intersected, the intersection line is a first intersection line, the first intersection line is the bottom line of the refraction groove, and the first intersection line is parallel to the light incident surface;

the third refraction surface and the fourth refraction surface are arranged at intervals and are intersected with the first refraction surface and the second refraction surface, and light rays which are shot in from the light incidence surface and are shot out through the first refraction surface, the second refraction surface, the third refraction surface and the fourth refraction surface can deflect towards the side where the first intersection line is located.

2. The antiglare light transmission panel according to claim 1, wherein the angle a between the first refractive surface and the second refractive surface is from 110 ° to 130 °.

3. The antiglare light-transmitting panel according to claim 1 or 2, wherein the virtual plane perpendicular to the light-entering surface is a plane M and the first intersection line is on the plane M, and the first refractive surface and the second refractive surface are symmetrical with respect to the plane M.

4. The antiglare light-transmitting panel according to claim 3, wherein the plane M is perpendicular to both the third refractive surface and the fourth refractive surface, an intersection line of the plane M with the third refractive surface and the fourth refractive surface is a second intersection line, and an angle b between the second intersection line and the first intersection line is 140 ° to 160 °.

5. The antiglare light transmission panel according to claim 4, wherein the first refractive surface and the second refractive surface are each isosceles trapezoid surfaces, and the first intersection line is a shorter side of the isosceles trapezoid surfaces.

6. The antiglare light-transmitting panel according to claim 5, wherein the third refractive surface and the fourth refractive surface are each an isosceles triangle, and wherein a waist edge of the isosceles triangle coincides with a waist edge of the isosceles trapezoid and is an intersection line of the isosceles triangle and the isosceles trapezoid.

7. The antiglare light-transmitting panel according to claim 6, wherein the longer side of the isosceles trapezoid surface and the base of the isosceles triangle surface form a rectangle on the same plane N, and the plane N is parallel to the light entrance surface, the longer side L1 of the isosceles trapezoid surface is 9.2mm to 11.2mm, and the base L2 of the isosceles triangle surface is 3.1mm to 3.9mm.

8. The antiglare light-transmitting panel according to claim 7, wherein the distance L3 between the first intersection line and the plane N is from 0.8mm to 1.2mm, and the waist edge length L4 of the isosceles triangle surface is from 2.3mm to 2.9mm.

9. The antiglare light transmission panel according to claim 6, wherein the distance L5 between the first intersection and the light entrance face is from 0.2mm to 2mm.

10. A classroom lamp characterized by installing the antiglare light-transmitting panel according to any one of claims 1 to 9.

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