CN210860853U

CN210860853U - Classroom lamp

Info

Publication number: CN210860853U
Application number: CN201922264282.7U
Authority: CN
Inventors: 郑元利; 张江滨; 陈紫罡
Original assignee: Xiamen Xindeco Optoelectronics Co ltd
Current assignee: Xiamen Xindeco Optoelectronics Co ltd
Priority date: 2019-12-17
Filing date: 2019-12-17
Publication date: 2020-06-26
Anticipated expiration: 2029-12-17

Abstract

The utility model relates to a classroom lamp, including the casing that has a cavity, install in the lighting assembly of cavity and install in the grid board of cavity opening part, have on the grid board and be a plurality of holes that multirow multiseriate laid, every hole be by going into the light-emitting side toward the big frustum shape that increases gradually of light-emitting side to the illuminance and the glare value of solving current grid center department can be than the problem of regional high many on every side.

Description

Classroom lamp

Technical Field

The utility model relates to the field of lighting, specifically relate to a classroom lamp.

Background

The classroom lamp is used for lighting in places such as ordinary classrooms, laboratories, art rooms, multimedia classrooms, meeting rooms, reading rooms and the like in schools, and has the requirements of higher illumination (more than or equal to 300lx), average illumination (more than or equal to 0.7), lamp glare value (less than or equal to 16UGR) and power density (less than or equal to 9W/m2) on the operation surface in the classroom according to national or various local standards, so that the lighting requirement of normal learning of students can be met, and if the lighting requirement is not met, the vision of the students can be seriously damaged, and the harm such as myopia is caused.

The conventional classroom lamp generally adopts a grille lamp as a lighting lamp, most of the gratings of the conventional grille lamp are rectangular grids, and although the problems of an average illumination value and a glare value are solved to a certain extent by the grids of the rectangular grids, the illumination value and the glare value at the center of the grids are still much higher than those of surrounding areas, and an optimal space still exists for the uniformity of the illumination.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a classroom lamp to the illuminance and the glare value of solving current grid center department can be than regional many problems that are high on every side.

The specific scheme is as follows:

the utility model provides a classroom lamp, is including the casing that has a cavity, install the lighting assembly in the cavity and install in the grid board of cavity opening part, have a plurality of holes that are the multirow multiseriate and lay on the grid board, every hole be by the income light side toward the big frustum shape of light-emitting side increase gradually.

Further, the included angle between the inner wall of the hole and the axis of the hole is defined as α, wherein the included angle is equal to or larger than 1 degree and equal to or smaller than α degree and equal to or smaller than 3 degree.

Further, the α is 2 °.

Furthermore, the light incident side of the grating plate is a plane, the light emergent side of the grating plate is of an arc-shaped structure, and the arc-shaped structure is arranged at the center of the width direction of the grating plate in an arching mode towards two sides.

Furthermore, the inner diameters of the holes in the length direction of the grid plate are defined as L, the inner diameters of the holes in the width direction of the grid plate are defined as W, the holes are arranged at equal intervals in the length direction of the grid plate, and the inner diameters L of the holes are the same; the holes are arranged at equal intervals along the width direction of the grating plate, and the inner diameter W of each hole is gradually reduced from the center to two sides in sequence.

Further, the inner diameters W of the holes are arranged in an arithmetic progression from the center to both sides.

Furthermore, the grid plate is formed by splicing a plurality of grid plate units, and every two adjacent grid plate units are clamped and fixed.

Furthermore, a diffusion film is arranged on the light incident side of the grating plate.

The utility model provides a classroom lamp compares with prior art and has following advantage: the utility model provides a light of classroom lamp outgoing is through the diffusion effect of the hole of frustum shape on the grid board for the light of outgoing can have better homogeneity, and the illuminance average value is better, and the hole of this frustum shape can reduce the probability that light is reflected back to in the cavity in addition, thereby can improve the intensity of light-emitting to a certain extent, thereby makes to have higher illuminance on the operation face that is shone.

Drawings

Fig. 1 shows a perspective view of a classroom lamp.

Fig. 2 shows a cross-sectional view of a classroom lamp in the width direction.

Fig. 3 shows a schematic view of a grating plate.

Fig. 4 shows a cross-sectional view of a grating plate in the width direction.

Fig. 5 shows a cross-sectional view of a grating plate in the length direction.

Fig. 6 shows a perspective view of a grating plate element.

Fig. 7 shows an enlarged view at a in fig. 3.

Detailed Description

To further illustrate the embodiments, the present invention provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. With these references, one of ordinary skill in the art will appreciate other possible embodiments and advantages of the present invention. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.

The present invention will now be further described with reference to the accompanying drawings and detailed description.

As shown in fig. 1 to 3, the present embodiment provides a classroom lamp including a lamp body 1 and a hanger 2 to which the lamp body 1 is mounted. The lamp body 1 includes a casing 10, a lighting assembly 11 and a grid plate 12, a cavity 100 is provided on the casing 10, an opening of the cavity 100 is a light outlet, the lighting assembly 11 includes an LED light source plate 110 and a plurality of LED light beads 111 attached to the LED light source plate 110, the LED light source plate 110 is fixed on the bottom surface of the cavity 100 facing the opening, and the LED light beads 111 on the LED light source plate 110 are emitted toward the opening of the cavity 100.

The grating plate 12 is fixedly installed at the light exit of the housing 10 to play a role of uniform illumination and anti-glare. Have on grid plate 12 and be a plurality of holes 120 that multirow multiseriate was laid, every hole 120 be by the income light side toward the big frustum shape of light-emitting side increase gradually, the diffusion effect of the hole of frustum shape on grid plate 12 of light of LED lamp pearl 111 outgoing, make the light of outgoing can have better homogeneity, the illuminance average value is better, and the hole of this frustum shape can reduce the probability that light is reflected back to cavity 100 in, thereby can improve the intensity of light-emitting to a certain extent, thereby make and to have higher illuminance on the operation face of being shone.

Wherein, the included angle between the inner wall of the hole 120 and the axis in the vertical direction is defined as α, wherein the angle of α is preferably 1-3 degrees, more preferably 2 degrees, at which the grating plate 12 has a better diffusion effect, so that the classroom lamp has better illumination uniformity.

In this embodiment, referring to fig. 1-4, as a preferred embodiment, the light incident side of the grating plate 12 is a plane, and the light emergent side of the grating plate 12 is an arc structure, the arc structure is arched outward at the center of the grating plate 12 in the width direction, so that the depth of the hole 120 at the center of the grating plate 12 in the width direction is greater than the depth of the surrounding holes 120, and thus the light emitted from the hole 120 at the center has a longer travel distance in the hole 120, and the light reflected by the peripheral wall of the hole 120 is greater, so that the illuminance and the glare value of the light directly facing the center and the peripheral area of the grating plate 12 can be balanced, and the light emitted from the LED lamp beads 111 can have better illuminance uniformity and lower glare value after being diffused by the grating plate 12.

In the present embodiment, referring to fig. 4 and 5, all holes 120 on the grid plate 12 are not identical and are regularly arranged. Specifically, in the present embodiment, the holes of the grating plate 12 are all in the shape of a truncated pyramid. The length of the rectangular frustum-shaped opening 120 in the longitudinal direction of the grating plate 12 is defined as L, and the length of the rectangular frustum-shaped opening in the width direction of the grating plate 12 is defined as W.

Wherein, the holes located on the length direction of the grating plate 12 are arranged at equal intervals, and the side lengths L of the holes are equal. The length of the side of the hole 120 located at the center of the width direction of the grating plate 12 in the width direction of the grating plate 12 is defined as W₁The side lengths of the holes from the center to both sides in the width direction are defined as W₂、W₃… …, Wn; the holes are arranged at equal intervals in the width direction, and W₁To Wn are sequentially set down. That is, the size of the hole located at the center of the grating plate 12 is the largest, and then decreases from the center to the length direction and the width direction in sequence, the design of the hole 120 can balance the illuminance and the glare value facing the center and the surrounding area of the grating plate 12, so that the light emitted from the LED lamp beads 111 can have better illuminance uniformity and lower glare value after being diffused by the grating plate 12.

Of these, preferred is L₁To Ln are arranged in an arithmetic progression, W₁Wn are also arranged in an arithmetic progression.

It should be clear here that the holes 120 at the very edge of the grating plate 12 are adapted to the size of the grating plate 12, so that they do not necessarily follow the above-mentioned pattern of holes in the grating plate 12, but all holes are otherwise arranged according to the above-mentioned pattern.

In this embodiment, referring to fig. 3, 6 and 7, as a preferred embodiment, the grid plate 12 is formed by splicing a plurality of grid plate units 121 along the length of the grid plate 12. Two side walls of the grating plate units 121 in the width direction respectively form a slot 1210 and a block 1211 extending into the slot 1210 of the corresponding side wall of the adjacent grating plate unit 121, and the adjacent grating plate units 121 are fixed by the slot 1210 and the block 1211 on the adjacent grating plate units to complete the assembly of the grating plate 12. This grid plate 12 has the concatenation of polylith grid plate unit 121 to form, therefore every grid plate unit 121's length can be littleer, therefore the processing of grid plate unit 121 of being convenient for, and connect fixedly through the buckle between each grid plate unit 121, and the assembly of this grid plate 12 of being convenient for can improve the effect of assembly.

In this embodiment, referring to fig. 2, a diffusion film 13 is further disposed on the light incident side of the grid plate 12 to improve the uniformity of the light emitted from the classroom lamp, so that the classroom lamp can have better illuminance uniformity and lower glare value.

While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A classroom lamp comprising a housing having a cavity, a lighting assembly mounted in the cavity, and a grill plate mounted at an opening of the cavity, wherein: the grating plate is provided with a plurality of holes which are arranged in multiple rows and multiple columns, and each hole is in a frustum shape which is gradually increased from the light inlet side to the light outlet side.

2. The classroom lamp as set forth in claim 1, wherein the angle between the inner wall of the cavity and the axis of the cavity is defined as α, wherein 1 ° ≦ α ≦ 3 °.

3. The classroom lamp as set forth in claim 2, wherein α is 2 °.

4. A classroom lamp as defined in claim 1, wherein: the light inlet side of the grating plate is a plane, the light outlet side of the grating plate is of an arc surface structure, and the arc surface structure is arranged at the center of the width direction of the grating plate in an arching mode towards two sides.

5. A classroom lamp as defined in claim 1, wherein: the inner diameters of the holes in the length direction of the grating plate are defined as L, the inner diameters of the holes in the width direction of the grating plate are defined as W, the holes are arranged at equal intervals in the length direction of the grating plate, and the inner diameters L of the holes are the same; the holes are arranged at equal intervals along the width direction of the grating plate, and the inner diameter W of each hole is gradually reduced from the center to two sides in sequence.

6. The classroom lamp as set forth in claim 5, wherein: the inner diameters W of the holes are arranged in an arithmetic progression from the center to both sides.

7. A classroom lamp as defined in claim 1, wherein: the grating plate is formed by splicing a plurality of grating plate units, and every two adjacent grating plate units are clamped and fixed.

8. A classroom lamp as defined in claim 1, wherein: and a diffusion film is also arranged on the light incident side of the grating plate.