CN214663928U - Blackboard lamp - Google Patents

Abstract

The blackboard lamp comprises a fixing part, an illumination assembly and a light barrier, wherein the illumination assembly is arranged on the fixing part and used for emitting illumination light to a blackboard; the light barrier is rotationally arranged on the fixing piece through a turnover mechanism so as to adjust the shielding position of the light barrier on the illumination light emitted by the illumination assembly. The application provides a blackboard lamps and lanterns, the barn door sets up on the mounting through tilting mechanism rotation, does not install according to the construction drawing when blackboard lamps and lanterns, makes it near apart from the blackboard, and the barn door can shelter from blackboard lamps and lanterns and project the light of blackboard the latter half, draws the low light degree of consistency, can compensate the illuminance of blackboard the latter half like this through the upset barn door this moment, promotes lighting assembly's the illuminance degree of consistency. The blackboard lamp can adjust the illuminance uniformity on the surface of the blackboard or improve the comfort level through the overturning of the light barrier.

Description

Blackboard lamp

Technical Field

The application relates to the technical field of lamps, in particular to a blackboard lamp.

Background

At present, the blackboard lamp is used for illuminating the blackboard in a classroom, and the comfort level of the blackboard lamp is a topic which is extremely important for the illumination of the existing education. The conventional blackboard lamp on the market is generally designed in the following three modes, namely a lens type blackboard lamp, a reflecting cup type blackboard and a light guide plate type blackboard lamp, and the illuminance uniformity of the blackboard lamp can reach the national standard, the three modes all need to polarize Lambert light emitted by a light source, so that invalid light (light which is not projected on a working surface) inevitably enters human eyes, and the comfort is greatly reduced. However, in order to solve such a problem and improve comfort, there have been blackboard lights that use a light barrier to effectively block ineffective light from entering human eyes. However, the blackboard lamp with the light barrier has high requirements for field installation, the light barrier and the lamp are integrally installed, and if the blackboard lamp is not installed on the field according to the construction drawing, the illumination uniformity is reduced or invalid light rays enter human eyes, so that the human eyes are uncomfortable.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the application is to provide a blackboard lamp, aim at solving among the prior art blackboard lamp if do not install according to the construction drawing at the scene, can cause the decline of illuminance uniformity or cause invalid light to get into the technical problem of people's eye.

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

a fixing member;

the illuminating assembly is arranged on the fixing piece and used for emitting illuminating light to the blackboard;

the light barrier is rotationally arranged on the fixing piece through the turnover mechanism so as to adjust the shielding position of the light barrier on the illumination light emitted by the illumination assembly.

Furthermore, the turnover mechanism comprises a driving member connected with the light barrier, and the driving member can drive the light barrier to rotate by a preset angle.

Furthermore, the turnover mechanism further comprises a transmission piece, and the driving piece is connected with the light barrier through the transmission piece.

Further, tilting mechanism is including being fixed in the sleeve of mounting, be provided with joint portion in the sleeve, be provided with the rotation axis on the barn door, follow the circumference of rotation axis is provided with a plurality of draw-in grooves, sleeve cover is located on the rotation axis, and rotatory the barn door, joint portion can follow one draw-in groove card goes into another the draw-in groove.

Further, the rotation angle of the light barrier around the horizontal plane is 0 to 90 degrees.

Furthermore, the light barrier is formed by telescopically connecting a plurality of plate bodies.

Further, the telescopic distance of the light barrier along the horizontal direction is 15 to 30 mm.

Furthermore, a reflection film layer is arranged on the light barrier and faces the surface of the lighting assembly.

Furthermore, a plurality of through holes are arranged on the light barrier.

Further, lighting components includes light source, diffusion barrier and polarisation light guide plate, the light source set up in the top of mounting, the diffusion barrier wrap up in the light source sets up, just polarisation light guide plate is followed the vertical direction setting of mounting, and be located the light source with between the barn door.

The application provides a blackboard lamps and lanterns's beneficial effect lies in: compared with the prior art, the blackboard lamps and lanterns of this application, the barn door sets up on the mounting through tilting mechanism rotation ground, do not install according to the construction drawing when blackboard lamps and lanterns, make it near apart from the blackboard, the barn door can shelter from blackboard lamps and lanterns and project the light of blackboard the latter half, draw the illuminance degree of consistency down, can be through the upset barn door this moment, compensate like this to the illuminance of blackboard the latter half, promote lighting assembly's the illuminance degree of consistency, the blackboard lamps and lanterns of this application, can be through the upset of barn door, adjust the illuminance degree of consistency on blackboard surface or improve the comfort level.

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 perspective view of a blackboard lamp provided in an embodiment of the present application;

FIG. 2 is a schematic diagram of a blackboard lamp provided by an embodiment of the present application, which is installed at a close position, and light rays on the lower half portion of the blackboard surface are shielded by a light barrier;

fig. 3 is a schematic diagram illustrating that a blackboard lamp provided in an embodiment of the present application can perform illumination compensation on a lower half portion of a blackboard by turning over a light barrier;

FIG. 4 is a schematic diagram illustrating a situation where a blackboard lamp provided by an embodiment of the present application is installed at a remote location and an ineffective light cannot be effectively blocked by a light barrier;

fig. 5 is a schematic diagram of a blackboard lamp provided by an embodiment of the present application, which can block ineffective light from entering human eyes by telescopic adjustment of a light barrier;

fig. 6 is a schematic structural diagram of a turnover mechanism and a light barrier of a blackboard lamp according to an embodiment of the present application;

FIG. 7 is a schematic cross-sectional structural view of a light barrier of a blackboard light fixture provided by an embodiment of the present application;

fig. 8 is a schematic structural diagram of a light barrier of a blackboard lamp provided by an embodiment of the present application;

fig. 9 is another schematic structural diagram of a light barrier of a blackboard lamp provided in an embodiment of the present application.

Reference numerals referred to in the above figures are detailed below:

1-a fixing piece; 2-a lighting assembly; 3-a light barrier; 4-turning over mechanism;

21-a light source; 22-a diffusion membrane; 23-a polarized light guide plate;

31-a light reflecting film layer; 32-a via hole;

100-blackboard.

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.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application.

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 implicitly indicating 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.

In order to explain the technical solutions of the present application, the following detailed descriptions are made with reference to specific drawings and examples.

As shown in fig. 1 to 9, an embodiment of the present application provides a blackboard lamp, including a fixing member 1, an illumination assembly 2 and a light barrier 3, wherein the illumination assembly 2 is disposed on the fixing member 1, and is used for emitting illumination light to a blackboard 100;

the light barrier 3 is rotatably disposed on the fixing member 1 through a turnover mechanism 4, so as to adjust a shielding position of the light barrier 3 on the illumination light emitted by the illumination assembly 2.

The embodiment of the application provides a 100 lamps and lanterns on blackboard, the barn door 3 sets up on mounting 1 through tilting mechanism 4 ground of rotating, as shown in fig. 2 and fig. 3, do not install according to the construction drawing when 100 lamps and lanterns on blackboard, make it near apart from blackboard 100, the barn door 3 can shelter from 100 lamps and lanterns of blackboard and project the light of 100 the latter half on blackboard, draw the low illumination degree of consistency, can compensate the illuminance of 100 the latter half on blackboard through the upset barn door 3 this moment, promote lighting assembly 2's illuminance degree of consistency. The blackboard 100 lamp of this application, the upset that can pass through the barn door 3, the illuminance degree of consistency or the improvement comfort level on blackboard 100 surface of adjusting.

It should be noted that the illumination assembly 2 is disposed at the top position of the fixing member 1, and the light barrier 3 is disposed at the bottom position of the fixing member 1 and below the illumination assembly 2, for blocking the ineffective light projected from the blackboard 100 by the illumination assembly 2.

In some embodiments of the present application, optionally, as shown in fig. 6, the turning mechanism 4 includes a driving member connected to the light barrier 3, and the driving member can drive the light barrier 3 to rotate by a preset angle.

In this embodiment, the turning mechanism 4 may be a driving member, an output end of the driving member is connected to the light barrier 3, the driving member is fixed on the fixing member 1, and the driving member directly drives the light barrier 3 to rotate, so as to deflect.

In the above-described embodiment of the present application, optionally, not shown in the figures, the turnover mechanism 4 further comprises a transmission member through which the driving member is connected with the light barrier 3.

In this embodiment, the turnover mechanism 4 may further include a transmission member, the transmission member may select a synchronous belt and two synchronous pulleys, if selecting a motor, the transmission member may select a synchronous belt and two synchronous pulleys, one synchronous pulley is connected to an output shaft of the motor, another synchronous pulley is connected to a rotation end of the light barrier 3, and the synchronous belt is connected to two synchronous pulleys, so that the motor drives the synchronous pulleys to rotate, and then drives the synchronous wheels connected to the light barrier 3 to move through the synchronous belt, thereby turning the light barrier 3, and the transmission is stable. Of course, the transmission part can also rotate the structure of the combination of the worm wheel, the worm and the speed reducer, and is matched with the stepping motor, so that the accurate and stable rotation of the light barrier 3 is realized.

In some embodiments of the present application, not shown in the figure, in addition to the structure of the above-mentioned driving part and driving medium, the turnover mechanism 4 can also select other structures to realize, for example, the turnover mechanism 4 includes the sleeve fixed in the fixing part 1, be provided with the joint portion in the sleeve, be provided with the rotation axis on the barn door 3, follow the circumference of rotation axis is provided with a plurality of draw-in grooves, the sleeve cover is located on the rotation axis, and it is rotatory the barn door 3, the joint portion can follow one another is gone into to the draw-in groove card another the draw-in groove.

In this embodiment, sleeve fixed mounting is on mounting 1, and the cover is established on the rotation axis of barn door 3 simultaneously, and when upset barn door 3, another draw-in groove can be gone into from a draw-in groove card of rotation epaxial in the inside joint portion of sleeve, realizes the upset joint of barn door 3, upset barn door 3, and then the angle of adjustment barn door 3, is convenient for compensate the illuminance of blackboard 100 the latter half, promotes lighting assembly 2's illuminance degree of consistency.

In the above-mentioned embodiments of the present application, optionally, the rotation angle of the light barrier 3 around the horizontal plane is 0 to 90 degrees.

In this embodiment, that is, the turning angle of the light barrier 3 is preferably 0 degree to 90 degrees, so that the light barrier 3 can be turned over at multiple angles, and the light fixture is suitable for being installed at different positions above the blackboard 100.

In some embodiments of the present application, optionally, as shown in fig. 5, the light barrier 3 is composed of a plurality of panels that are telescopically connected.

In this embodiment, but make extending structure with barn door 3, can have a plurality of plate bodies to remove in proper order and connect, it can stretch out and draw back to realize barn door 3, as shown in fig. 4 and fig. 5, like this when the blackboard 100 lamp is not installed according to the construction drawing, when far away from blackboard 100, the invalid light that blackboard 100 lamp throwed out can't effectually be sheltered from to barn door 3, thereby get into people's eye, cause the glare discomfort, can adjust through stretching out and drawing back to barn door 3 this moment, thereby shelter from invalid light and get into people's eye, the comfort level is improved.

In the above-mentioned embodiment of the present application, optionally, the telescopic distance of the light barrier 3 in the horizontal direction is 15 to 30 mm.

In this embodiment, the telescopic distance of the light barrier 3 is preferably 15 to 30mm, so that the light barrier can block the ineffective light and does not occupy space.

In some embodiments of the present application, optionally, as shown in fig. 7, a reflective film layer is disposed on the light barrier 3 toward the panel surface of the illumination assembly 2.

In this embodiment, the light barrier 3 may form a reflective film layer towards the surface of the lighting assembly 2, so as to block and radiate the ineffective light emitted from the lighting assembly 2 back to avoid entering human eyes, and optionally, the light barrier 3 may be made of aluminum material, and the reflective film layer 31 is formed by electroplating on an aluminum plate.

In some embodiments of the present application, optionally, as shown in fig. 8 and 9, a plurality of through holes 32 are provided on the light barrier 3. The through-hole 32 may be a circular hole or a polygonal hole, such as a hexagonal hole, with a hole diameter of preferably 3 to 6 mm.

In some embodiments of the present application, optionally, as shown in fig. 1, the lighting assembly 2 includes a light source 21, a diffusion film 22 and a polarized light guide plate 23, the light source 21 is disposed on the top of the fixing member 1, the diffusion film 22 is wrapped on the light source 21, and the polarized light guide plate 23 is disposed along the vertical direction of the fixing member 1 and is located between the light source 21 and the light barrier 3.

In this embodiment, the light source 21 may be selected as an LED light source 21, the diffusion film 22 and the polarized light guide plate 23 serve to convert the point light source 21 emitted from the LED light source 21 into a surface light source 21, reduce glare and achieve the purpose of uniformly illuminating the blackboard 100, in addition, the LED light source 21 is a linear light source 21, the surface of the diffusion film 22 has a microstructure, which can condense lambertian light emitted from the LED light source 21 and then enter the polarized light guide plate 23, the diffusion film 22 is installed between the light source 21 and the polarized light guide plate 23, the surface of the polarized light guide plate 23 has a microstructure, which can deflect the light at a certain angle and refract the light, and the light-emitting angle of the polarized light guide plate 23 is 17 degrees.

Particularly, in the prior art, the blackboard lamp provided with the common light barrier has higher precision requirement on field installation, when the blackboard lamp is not installed according to the construction requirement and is close to or far away from the blackboard, the illumination uniformity can be reduced or glare discomfort can be caused, while the blackboard lamp of the application is characterized in that the light barrier is rotationally arranged on the fixing part through the turnover mechanism, when the blackboard lamp is not installed according to the construction drawing and is close to the blackboard, the light projected to the lower half part of the blackboard by the blackboard lamp can be shielded by the light barrier, the illumination uniformity of the lower half part of the blackboard can be reduced, the illumination of the lower half part of the blackboard can be compensated through turnover of the light barrier, the illumination uniformity of the illuminating assembly is improved, the adjustable light barrier can be stretched or turned over, the light barrier can shield invalid light emitted by the blackboard lamp, and the light can be prevented from entering human eyes, causing glare discomfort and reducing construction cost.

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 (10)

1. A blackboard light fixture, comprising:

a fixing member;

the illuminating assembly is arranged on the fixing piece and used for emitting illuminating light to the blackboard;

the light barrier is rotationally arranged on the fixing piece through the turnover mechanism so as to adjust the shielding position of the light barrier on the illumination light emitted by the illumination assembly.

2. The blackboard light of claim 1, wherein the turnover mechanism includes an actuating member connected to the light barrier, the actuating member being capable of driving the light barrier to rotate a predetermined angle.

3. The blackboard light of claim 2, wherein the turnover mechanism further includes a driving member, the driving member being connected to the light barrier through the driving member.

4. The blackboard lamp according to claim 1, wherein the turnover mechanism includes a sleeve fixed to the fixing member, a clamping portion is provided in the sleeve, a rotation shaft is provided on the light barrier, a plurality of clamping grooves are provided along a circumferential direction of the rotation shaft, the sleeve is sleeved on the rotation shaft and rotates the light barrier, and the clamping portion can be clamped into another clamping groove from one clamping groove.

5. The blackboard light of claim 1, wherein the rotation angle of the light barrier around the horizontal plane is 0 to 90 degrees.

6. The blackboard light as claimed in any one of claims 1 to 5, characterised in that the light barrier is made up of a plurality of telescopically connected panels.

7. The blackboard light as claimed in claim 6, wherein the telescopic distance of the light barrier in the horizontal direction is 15 to 30 mm.

8. The blackboard light of claim 1, characterized in that the light barrier is provided with a reflective film layer on its face facing the lighting assembly.

9. The blackboard light of claim 1, wherein the light barrier has a plurality of through holes.

10. The blackboard light fixture of claim 1, wherein the illumination assembly includes a light source, a diffuser film and a polarized light guide plate, the light source is disposed on the top of the fixing member, the diffuser film is wrapped around the light source, and the polarized light guide plate is disposed along a vertical direction of the fixing member and between the light source and the light barrier.

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