CN218494892U

CN218494892U - Blackboard lamp

Info

Publication number: CN218494892U
Application number: CN202222603374.5U
Authority: CN
Inventors: 方翔; 阙钦荣; 洪建顺; 陈云伟
Original assignee: Leeleds Lighting Xiamen Co Ltd
Current assignee: Leeleds Lighting Xiamen Co Ltd
Priority date: 2022-09-29
Filing date: 2022-09-29
Publication date: 2023-02-17
Anticipated expiration: 2032-09-29

Abstract

The application is suitable for the technical field of lighting equipment for classrooms, and particularly provides a blackboard lamp which comprises a lamp bracket, a light source plate, lenses and a grid; the lamp bracket is provided with an installation bracket and a first light barrier, and the installation bracket and the first light barrier are of an integrated structure; the light source plate is provided with a light source which can emit light and is arranged in a strip shape, the light source plate is arranged on the lamp holder, and the first light blocking plate is arranged on the side part of the mounting frame and used for blocking light; the lens is arranged on the lamp holder, and the light of the light source is emitted after passing through the lens; the grid is arranged on the lamp holder, the grid is provided with grid holes used for light transmission, the grid holes are a plurality of and are sequentially arranged along the length direction of the grid, light rays emitted by the lens pass through the grid holes, and the inner wall of each grid hole is used for shading. Aiming at solving the technical problem of poor anti-dazzle effect of the existing blackboard lamp in the prior art.

Description

Blackboard lamp

Technical Field

The application relates to the technical field of lighting equipment for classrooms, in particular to a blackboard lamp.

Background

In order to uniformly illuminate the blackboard writing area, the lamp generally needs to be hung above the platform, which is very dazzling for teachers and students in lectures. In the prior art, the number of lenses and light sources is increased under the condition that the total power is not changed, so that the surface brightness of a single light source is reduced to reduce glare, and the light emitted by a lamp is prevented from causing eyesight damage to teachers and students. Although the glare of the lamp adopting the design scheme is reduced, the lamp is large in size, large in aluminum profile consumption, cost-increasing, large in lens and light source consumption, cost-increasing, and after the surface brightness is reduced, the damage of high-brightness light to human eyes can be reduced, but the light beam angle is still large, the light emitted by the lamp still irradiates the eyes of teachers in the platform area, so that discomfort in eyes is caused, and the anti-glare effect is still poor.

SUMMERY OF THE UTILITY MODEL

An object of the application is to provide a blackboard lamp, aim at solving the current blackboard lamp anti-dazzle light effect poor technical problem that exists among the prior art.

In order to achieve the purpose, the technical scheme adopted by the application is as follows: provided is a blackboard lamp including:

the light bracket is provided with a mounting bracket and a first light barrier, and the mounting bracket and the first light barrier are of an integrated structure;

the light source plate is provided with a light source which can emit light and is arranged in a strip shape, the light source plate is arranged on the lamp bracket, and the first light barrier is arranged on the side part of the mounting bracket and used for blocking light;

the lens is arranged on the lamp holder, and light rays of the light source are emitted out after passing through the lens; and

the grid, the grid is located on the lighting fixture, the grid has and is used for non-light tight grid hole, the grid hole is a plurality of and sets gradually along the length direction of grid, the warp the light process that lens jetted out the grid hole, the inner wall in grid hole is used for the shading.

In one embodiment, the lens is in a strip shape matched with the length of the light source, an included angle a between a plane a formed by the strongest rays emitted by the lens and a plane where the first light barrier is located is 9-12 degrees, and the strongest rays are not intersected with the first light barrier.

In one embodiment, the light source faces the light incident side of the lens, one side of the first light barrier facing the mounting frame and the mounting frame are both provided with a clamping groove, and two ends of the light source plate and two ends of the lens are both arranged in the clamping grooves to be connected with the lamp holder.

In one embodiment, the grating is strip-shaped, grating holes of the grating are surrounded by second light blocking plates arranged on three sides and a connecting rod arranged on one side, and the side where the connecting rod is arranged is far away from the first light blocking plate.

In one embodiment, the connecting rod of the grille is assembled in the mounting groove of the mounting frame, and the second light blocking plate on the side opposite to the connecting rod is overlapped on the first light blocking plate and is attached to the first light blocking plate.

In one embodiment, the height H of the second light blocking plate is 7-9 mm, and the distance L1 between one end of the first light blocking plate, which is far away from the mounting frame, and the light emitting side of the lens is greater than 67mm.

In one embodiment, the first light barrier comprises a straight section and an arc-shaped section, the straight section is connected with the mounting frame, and the arc-shaped section is connected with one end of the straight section, which is far away from the mounting frame, and extends towards one side with the lens.

In one embodiment, the direction perpendicular to the length direction of the lens is a first direction, the planes of the two ends of the light-emitting side of the lens in the first direction are respectively a first plane alpha and a second plane beta, the first plane alpha and the second plane beta are both parallel to the straight section of the first light barrier, the distance between the first plane alpha and the first light barrier is smaller than the distance between the second plane beta and the first light barrier, the distance L2 between one end, close to the connecting rod, of the second light barrier connected with the connecting rod and the second plane beta is not less than 7.9mm, and the perpendicular distance L3 between one end, far away from the straight section, of the arc-shaped section of the first light barrier and the first plane alpha in the direction perpendicular to the straight section of the first light barrier is 6-10 mm.

In one embodiment, end covers are further arranged at two ends of the lamp holder, and rubber pads are further arranged between the end covers and the lamp holder.

In one embodiment, the blackboard lamp further comprises a driving assembly arranged outside the lamp holder.

The utility model provides a blackboard lamp's beneficial effect lies in, this blackboard lamp has first barn door, can block the light that the light source sent, just namely block in one side, prevent light directive student and mr one side, the effect of mounting bracket lies in being used for installing the light source board, the light source has been set up on the light source board, be used for giving out light, the light that the light source sent jets out after passing through the lens, lens have the effect of carrying out the refraction to light, can assemble light to a certain extent, prevent that light from carrying out excessive diffusion, the blackboard lamp of this application is except carrying out being in the light through first barn door, still carry out being in the light through the grid before first barn door carries out being in the light, the inner wall in grid hole can block light, so that light can not scatter to student and teacher's eye, make light can be better shine the blackboard surface.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a blackboard lamp provided in an embodiment of the present application;

FIG. 2 is a schematic cross-sectional view of the structure of FIG. 1;

FIG. 3 is a schematic view of the structure of the grid of FIG. 1;

FIG. 4 is a schematic view of the lens of FIG. 1;

FIG. 5 is an optical path diagram of the blackboard lamp of the present embodiment on a cross section perpendicular to the length direction of the lamp body;

fig. 6 is an optical path diagram of the blackboard lamp of the present embodiment in a cross section parallel to the longitudinal direction of the lamp body.

In the figure, 1, a mounting frame; 2. a first light barrier; 3. a light source board; 4. a light source; 5. a lens; 6. a grid; 7. grating holes; 8. a second light blocking plate; 9. a connecting rod; 10. an end cap; 11. a drive assembly; 12. a rubber pad.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, 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 merely illustrative of the present application and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" 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 "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise. The meaning of "a number" is one or more unless specifically limited otherwise.

In the description of the present application, it is to 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 based on those shown in the drawings, and are used only for convenience in describing the present application and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present application.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

Referring to fig. 1, 2, 3 and 4, the present application provides a blackboard lamp, which includes a lamp holder, a light source plate 3 and a lens 5;

the lamp holder is provided with a mounting rack 1 and a first light barrier 2, and the mounting rack 1 and the first light barrier 2 are of an integrated structure;

the light source plate 3 is provided with a light source 4 which can emit light and is arranged in a strip shape, the light source plate 3 is installed on the lamp holder, and the first light blocking plate 2 is arranged on the side portion of the installation frame 1 and used for blocking light;

the lens 5 is arranged on the lamp holder, and the light rays of the light source 4 are emitted out after passing through the lens 5;

grid 6 locates on the lighting fixture, grid 6 has and is used for non-light tight grid hole 7, grid hole 7 is a plurality of and sets gradually along the length direction of grid 6, the warp the light process that lens 5 jetted out grid hole 7, the inner wall in grid hole 7 is used for the shading.

Specifically, the lamp holder is of a shell-shaped structure, and the blackboard lamp is of a long strip-shaped structure, so that the lamp holder, the light source plate 3 and the lens 5 are matched with each other in a homogeneous manner and are of long strip-shaped structures, and the blackboard lamp can meet the lighting requirements of a blackboard better.

The mounting bracket 1 and the first light barrier 2 jointly form a light holder, and the two can adopt an integral injection molding structure.

The mounting frame 1 is used for mounting the light source panel 3, the lenses 5 and the grating 6, and of course, the mounting frame 1 and the first light barrier 2 can be used for mounting the light source panel 3, the lenses 5 and the grating 6 together.

The light source plate 3 can be an aluminum substrate, the light source plate 4 is arranged on the aluminum substrate, the aluminum substrate can be a heat dissipation plate, the light source plate 4 can be a plurality of LED lamps arranged side by side, the light source plate 4 is in a bar shape, the light source plate 3 is arranged on a lamp bracket, the lens 5 is arranged on the lamp bracket, and the light source plate 4 can be opposite to the light incidence side of the lens 5.

After passing through the lens 5, the light is emitted and passes through the grating holes 7 on the grating 6, and the grating holes 7 can block the light again to prevent the light from being excessively diffused.

The utility model provides a blackboard lamp's beneficial effect lies in, this blackboard lamp has first barn door 2, can block the light that light source 4 sent, just namely block in one side, prevent light directive student and mr one side, mounting bracket 1's effect lies in being used for installing light source board 3, light source 4 has been set up on light source board 3, be used for giving out light, the light that light source 4 sent jets out after passing through lens 5, lens 5 has the effect of refracting light, can assemble light to a certain extent, prevent that light from carrying out excessive diffusion, the blackboard lamp of this application except carrying out being in the light through first barn door 2, still be in the light through grid 6 before first barn door 2 is in the light, the inner wall of grid hole 7 can block the light, so that light can not scatter to student and teacher's eye, make light can be better shine the blackboard surface.

As shown in fig. 2, the included angle between the plane a formed by the strongest light and the plane of the first light barrier 2 is 9 to 12 °, as shown in the figure, the plane formed by the strongest light is defined as a, the plane b parallel to the plane of the first light barrier 2 is taken, the included angle between the plane a and the plane b is a, and a is equal to the included angle between the plane a formed by the strongest light and the plane of the first light barrier 2, specifically 9 to 12 °, the lens 5 is in a strip shape with a length matched with that of the light source 4, in order to prevent the light from being emitted to students and teachers, and enable the light to be better emitted to one side of the blackboard, the lens 5 is deflected to a certain extent when the lens 5 is installed, the deflection angle is 9 to 12 °, and the effect is achieved that the included angle between the plane formed by the strongest light emitted by the lens 5 and the plane of the first light barrier 2 is 9 to 12 °, and the strongest light does not intersect with the first light barrier 2 itself.

Specifically, light source 4 is established in mounting bracket 1, light of light source 4 jets out behind lens 5 and grid 6, first barn door 2 sets up the one side at mounting bracket 1, can block the light that jets out through grid 6, prevent its directive student and teacher one side, and the opposite side towards the blackboard then does not set up the barn door, in order to make more light directive blackboard one side, also avoid first barn door 2 to block too much light, cause the loss to illumination, then carry out certain degree of deflection to lens 5 when mounting lens 5, carry out certain angle's deflection towards the one side that does not set up first barn door 2 promptly, the deflection angle is 9 ~ 12.

As shown in fig. 2, specifically, the light emitted from the lens 5 has the maximum intensity at a specific position, and the light intensity to both sides is weak, because the lens 5 is long, a row of the strongest light rays can be emitted in a linear form in the length direction of the lens 5 to form a strongest light surface a, after the blackboard lamp is installed, taking the first light barrier 2 in a vertical state as an example, a plane b parallel to the first light barrier 2 is a vertical surface, a plane formed by the strongest light rays, that is, the strongest light surface, and an included angle between the plane formed by the strongest light rays and the plane of the first light barrier 2 is 9 degrees to 12 degrees, preferably 9.5 degrees, that is, an included angle between the plane formed by the strongest light rays and the vertical surface b is 9 degrees to 12 degrees, and the strongest light rays are deflected in a direction away from the first light barrier 2, that is, in a direction toward one side of the blackboard, so that more light rays can be emitted to the blackboard. So that in this case the most intense ray does not intersect the first light barrier 2 itself.

This embodiment carries out certain degree with lens 5 and deflects, makes more light can the directive blackboard, further prevents light directive student and classroom for anti-dazzle effect is better.

As fig. 2 and fig. 4, can understand, because light source 4 is the bar, so the looks adaptation, lens 5 also adopt with the rectangular shape of 4 length looks adaptations of light source, light source 4 is just right lens 5's income light side, first barn door 2 towards one side of mounting bracket 1 with all be equipped with the draw-in groove on the mounting bracket 1, light source board 3 with lens 5's both ends are all located in order to realize being connected with the lighting fixture in the draw-in groove.

Specifically, the light source 4 faces the light entrance side of the lens 5 so as to be able to enter the lens 5 and exit from the light exit side of the lens 5.

The light source plate 3 and the lens 5 are installed on the lamp holder, specifically, the light source plate and the lens can be installed on the first light barrier 2 and the installation frame 1, and can also be installed on the installation frame 1 independently. This embodiment adopts all to set up the draw-in groove on first barn door 2 and mounting bracket 1, and the draw-in groove is all gone into to the both ends of light source board 3 and lens 5 card, can realize fine connection, and when the both ends of lens 5 entered into in the draw-in groove, then lens 5 took place to deflect, produced 9 ~ 12 angle of deflection to messenger's light can be better directive blackboard one side.

As shown in fig. 3, before the light is blocked by the first light-blocking plate 2, the light is further blocked by a grating 6, specifically, the grating 6 is in a strip shape, a grating hole 7 of the grating 6 is surrounded by a second light-blocking plate 8 arranged on three sides and a connecting rod 9 arranged on one side, and the side where the connecting rod 9 is arranged is far away from the first light-blocking plate 2.

Specifically, after being emitted from the lens 5, the light passes through the grating holes 7 of the grating 6 and is blocked by the second light blocking plates 8 on the three sides forming the grating holes 7, so that the light is prevented from being dispersed, the second light blocking plates 8 are not arranged on one side, the side is the side far away from the first light blocking plate 2 and is the side opposite to the first light blocking plate 2, the side is just the side close to the blackboard, the side is not blocked, the light can be emitted to the blackboard, and the light is blocked by the second light blocking plates 8 on the other three sides, so that glare is prevented.

After the light is emitted from the grating holes 7, the light is blocked by the first light barrier 2, so that the glare is further prevented.

In one embodiment, as shown in fig. 2, the connecting rod 9 of the grille 6 is fitted in the mounting groove of the mounting frame 1, and the second light barrier 8 on the side opposite to the connecting rod 9 overlaps the first light barrier 2 and is arranged in close contact with the first light barrier 2.

The connecting rod 9 is assembled in the mounting groove, and is more stable, and the second light blocking plate 8 close to the first light blocking plate 2 is attached to the first light blocking plate 2, so that the space can be saved. Specifically, a lap plate may be provided on the first light barrier 2, and the second light barrier 8 is placed on the lap plate.

As shown in fig. 2, in order to increase the anti-glare effect, according to the light emergence condition, in this embodiment, the height H of the second light-blocking plate 8 is set to be 7-9 mm, preferably 8.3mm, and the distance L1 between one end of the first light-blocking plate 2, which is far away from the mounting frame 1, and the light emergence side of the lens 5 is greater than 67mm, preferably 67.3mm.

Because second light blocking plate 8 has better suitable height, so can suitably block light, and first light blocking plate 2 also has certain length, and its distance to between lens 5 light-emitting side is greater than 67mm, can shelter from light effectively, has increased the effect of anti-dazzle.

The first light barrier 2 provided by this embodiment further includes a straight section and an arc-shaped section, the straight section is connected to the mounting bracket, the arc-shaped section is connected to one end of the straight section far away from the mounting bracket 1 and extends to one side with the lens 5.

Straight section lug connection is on mounting bracket 1, and the segmental arc is located straight section's afterbody to extend towards one side of lens 5, the form that is the indent extends towards one side of lens 5, owing to have the segmental arc, so its light blocking effect and anti-dazzle effect are better. And L1 may be a distance from an end of the arc section away from the mounting frame 1 to the light-emitting side of the lens 5.

As shown in fig. 2, in order to further achieve the technical effect of anti-glare, in this embodiment, a direction perpendicular to the length direction of the lens 5 is a first direction, planes at two ends of the light-emitting side of the lens 5 in the first direction are respectively a first plane and a second plane, both the first plane and the second plane are parallel to a straight section of the first light-blocking plate 2, a distance between the first plane and the first light-blocking plate 2 is smaller than a distance between the second plane and the first light-blocking plate 2, a distance L2 between one end, close to the connecting rod 9, of the second light-blocking plate 8 connected to the connecting rod 9 and the second plane is greater than or equal to 7.9mm, and a perpendicular distance L3 between one end, far away from the straight section, of the arc-shaped section of the first light-blocking plate 2 and the first plane in a direction perpendicular to the straight section of the first light-blocking plate 2 is 6-10 mm.

Specifically, as shown in fig. 2, the first plane is defined as α, and the second plane is defined as β.

The distance L2 between one end of the second light baffle plate 8 connected with the connecting rod 9, which is close to the connecting rod 9, and the second plane is more than or equal to 7.9mm, and is preferably 7.9mm.

In the direction perpendicular to the straight section of the first light barrier 2, the vertical distance L3 between one end of the arc-shaped section of the first light barrier 2, which is far away from the straight section, and the first plane is 6-10 mm, preferably 8.16mm.

The distance L2 between one end, close to the connecting rod 9, of the second light blocking plate 8 connected with the connecting rod 9 and the second plane is more than or equal to 7.9mm, so that light rays emitted by the lens 5 can not be blocked by the connecting rod 9 or other structures such as the mounting frame 1, the distance from the light emitting side of the lens 5 is far, and the light rays can be shot to one side of the blackboard well.

The vertical distance L3 between one end of the arc-shaped section of the first light barrier 2, which is far away from the straight section, and the first plane in the direction perpendicular to the straight section of the first light barrier 2 is 6-10 mm, so that light rays emitted from the light emitting side of the lens 5 can be better blocked by the first light barrier 2, and are prevented from being emitted to eyes of students and teachers on one side of the first light barrier 2, and if the distance L3 is smaller, the blocking is not complete.

As shown in fig. 5 and fig. 6, the blackboard lamp provided in this embodiment can achieve the following technical effects, as seen from the ray trace diagram, due to the adoption of the above technical means: as shown in fig. 5, the beam angle is controlled between 10 ° and 13 ° on the cross section perpendicular to the length direction of the lamp body, that is, in the direction perpendicular to the blackboard; as shown in FIG. 6, the beam angle in the cross section parallel to the longitudinal direction of the lamp body, i.e., in the direction parallel to the black plate, is controlled to be in the range of 93 DEG to 113 deg.

The beam angle refers to the included angle between the maximum light intensity of 1/10 of the lamp, the beam angle is controlled to be between 10 degrees and 13 degrees in the direction vertical to the blackboard, the beam angle is small, most of the light intensity faces one side of the blackboard, the light can be ensured not to irradiate students and classrooms on the other side, the beam angle is controlled to be between 93 degrees and 113 degrees in the direction parallel to the blackboard, and the light can be ensured to be well irradiated on the blackboard in a large area.

Furthermore, both ends of the lamp holder are also provided with end covers 10, and a rubber mat 12 is arranged between the end covers 10 and the lamp holder. The end cap 10 serves to prevent the lens 5, light source 4, etc. from sliding out of the side of the mounting frame 1, while the rubber pad 12 avoids hard contact. The blackboard lamp further comprises a driving assembly 11 arranged outside the lamp holder.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. Blackboard lamp, its characterized in that includes:

the light bracket is provided with an installation bracket and a first light barrier, and the installation bracket and the first light barrier are of an integrated structure;

the lighting fixture is located to the grid, the grid has and is used for non-light tight grid hole, the grid hole sets gradually for a plurality of and along the length direction of grid, the warp the light process that lens jetted out the grid hole, the inner wall in grid hole is used for the shading.

2. A blackboard lamp as claimed in claim 1, characterised in that the lens is of a strip shape adapted to the length of the light source, the angle between the plane a formed by the strongest rays emitted by the lens and the plane of the first light barrier is 9 ° to 12 °, and the strongest rays do not intersect the first light barrier itself.

3. A blackboard lamp as claimed in claim 1 or 2, wherein the light source is opposite to the light incident side of the lens, the first light barrier is provided with a slot on one side facing the mounting bracket and on the mounting bracket, and the two ends of the light source board and the lens are both arranged in the slot to realize connection with the lamp holder.

4. A blackboard lamp as claimed in claim 1 or 2, characterised in that the grille is strip-shaped, the grille holes of the grille are surrounded by second light barriers arranged on three sides and a link arranged on one side, the side where the link is arranged being far from the first light barrier.

5. The blackboard lamp according to claim 4, wherein the connecting rod of the grille is fitted in the mounting groove of the mounting bracket, and the second light blocking plate on the side opposite to the connecting rod is overlapped on the first light blocking plate and is disposed in close contact with the first light blocking plate.

6. The blackboard lamp as claimed in claim 4, wherein the height H of the second light baffle is 7-9 mm, and the distance L1 between one end of the first light baffle, which is far away from the mounting rack, and the light-emitting side of the lens is greater than 67mm.

7. The blackboard lamp of claim 6, wherein the first light barrier includes a straight section and an arc section, the straight section is connected to the mounting bracket, and the arc section is connected to one end of the straight section away from the mounting bracket and extends to the side with the lens.

8. The blackboard lamp as claimed in claim 7, wherein the direction perpendicular to the length direction of the lens is a first direction, the planes of the two ends of the light-emitting side of the lens in the first direction are a first plane α and a second plane β, respectively, the first plane α and the second plane β are both parallel to the straight section of the first light-blocking plate, the distance between the first plane α and the first light-blocking plate is less than the distance between the second plane β and the first light-blocking plate, the distance L2 between the end of the second light-blocking plate connected to the link rod, which is close to the link rod, and the second plane β is greater than or equal to 7.9mm, and the perpendicular distance L3 between the end of the arc-shaped section of the first light-blocking plate, which is far away from the straight section, and the first plane α is 6 to 10mm in the direction perpendicular to the straight section of the first light-blocking plate.

9. The blackboard lamp according to claim 1, wherein end caps are further provided at both ends of the lamp holder, and a rubber pad is further provided between the end caps and the lamp holder.

10. The blackboard lamp of claim 1, further including an actuating assembly located outside the lamp holder.