CN208745610U - A kind of anti-diffraction classroom blackboard lighting device - Google Patents

Abstract

The utility model discloses a kind of anti-diffraction classroom blackboard lighting devices, including grating type ground glass plate, the two sides of the grating type ground glass plate are fixedly connected to sealing fixed block, light intensity decreasing plate is fixedly connected between two sealing fixed blocks and positioned at the back side of grating type ground glass plate, card slot is offered between two sealing fixed blocks and positioned at the back side of light intensity decreasing plate, the inside of the card slot is connected with LED lamp fixed plate, LED lamp fixed plate is provided with multiple, it is mutually clamped between multiple LED lamp fixed plates, the utility model relates to classroom blackboard lighting technical fields.The anti-diffraction classroom blackboard lighting device, solves the lighting structure that existing blackboard uses some cable-stayed types with lighting device mostly, but this structure, uses that occupied space is big, and Yi Jiju dust, light resource scatters very fast problem.

Description

A kind of anti-diffraction classroom blackboard lighting device

Technical field

The utility model relates to classroom blackboard lighting technical field, specially a kind of anti-diffraction classroom blackboard illumination dress It sets.

Background technique

Blackboard is not the plate face for refering in particular to black, says that it is the plane that can use chalk repeated writing in traditional sense, Plate face is hard, is chiefly used in imparting knowledge to students.Blackboard is generally used made of plank or ground glass etc., can specifically write material with chalk etc. Material writes above.Mostly black, blackish green, white or ecru, before text invention, it has been found that charcoal can be made It draws, it can be found that some mural paintings in ancient times, draw the palisades of these mural paintings from traditional sense in some ancient times grottos in Europe On say and be properly termed as blackboard.Ancient Chinese teaching be mostly used a kind of article referred to as sand table, with hardwood on sandy soil repeatedly It writes, but because sandy soil are softness, it can not be interpreted as being a kind of blackboard.Over more than 200 years, blackboard is from earliest with black Color coating material is in plank, the hard objects such as cement surface, to the water mill glass of the nineties, color coated steel sheet, and composite panel, The development step by step for having witnessed world's educational undertaking, conveys knowledge for the mankind, and distinctions won on the battlefield have been made in universal education.Existing blackboard Type also start to become complicated multiplicity, point have blackboard from color, green plate, blank point has surface plate, arc from surface shape Panel, dividing from structure composition has bracket movable plate, draw back plate, lifter plate, magnet board, and dividing from purposes has blackboard for education, Office blank, billboard, display board, and blackboard for education has electronic blackboard, Multifunctional combined board, combination push-and-pull blackboard, interaction Formula electronic whiteboard, band curtain projection plate etc..

Existing blackboard uses the lighting structure of some cable-stayed types with lighting device mostly, but this structure, makes It is big to use occupied space, Yi Jiju dust, the scattering of light resource is very fast, cannot up to meeting the needs of users, some places it is black Plate, also in the headlamp using lamp tube type, is not only wasted electric energy, can also damage eyes with lighting device.

Utility model content

In view of the deficiencies of the prior art, the utility model provides a kind of anti-diffraction classroom blackboard lighting device, solves Existing blackboard uses with lighting device the lighting structure of some cable-stayed types mostly, but this structure, uses Occupied space is big, and Yi Jiju dust, light resource scatters very fast problem.

In order to achieve the above object, the utility model is achieved by the following technical programs: a kind of anti-diffraction classroom blackboard With lighting device, including grating type ground glass plate, it is solid that the two sides of the grating type ground glass plate are fixedly connected to sealing Determine block, two back sides for sealing between fixed blocks and being located at grating type ground glass plate are fixedly connected with light intensity decreasing plate, Card slot is offered between two sealing fixed blocks and positioned at the back side of light intensity decreasing plate, the inside of the card slot is connected with LED lamp fixed plate, LED lamp fixed plate are provided with multiple, are mutually clamped between multiple LED lamp fixed plates, described Its back side for being located at light intensity decreasing plate of the side of LED lamp fixed plate is fixedly connected with LED lamp, the LED lamp fixed plate Front and be located at LED lamp immediately ahead of be fixedly connected with block of lense, the block of lense is provided with multiple, multiple lens It is fixedly connected between block.

Preferably, the front of the LED lamp fixed plate and be located at multiple blocks of lense two sides between be fixedly connected to Rubber seal.

Preferably, the back side of the block of lense opens up fluted, and the middle part of the groove is in the shape of convex lens.

Preferably, the block of lense is made by organic glass.

Preferably, the light intensity decreasing plate by glass raw material be added photochromic material be made, photochromic material such as silver chlorate or The crystallite of silver bromide.

Beneficial effect

The utility model provides a kind of anti-diffraction classroom blackboard lighting device.Having compared with prior art following has Beneficial effect:

(1), anti-diffraction classroom blackboard lighting device, by being fixedly connected in the two sides of grating type ground glass plate There is sealing fixed block, two back sides for sealing between fixed blocks and being located at grating type ground glass plate are fixedly connected with light intensity decreasing Plate, two back sides for sealing between fixed blocks and being located at light intensity decreasing plate offer card slot, and the inside of card slot is connected with LED lamp Fixed plate, LED lamp fixed plate are provided with multiple, are mutually clamped between multiple LED lamp fixed plates, LED lamp fixed plate Its back side for being located at light intensity decreasing plate of side is fixedly connected with LED lamp, the front of LED lamp fixed plate and is located at LED lamp Front be fixedly connected with block of lense, solve existing blackboard lighting device mostly using some cable-stayed types light shine Bright structure, but this structure, use that occupied space is big, and Yi Jiju dust, light resource scatters very fast problem.

(2), anti-diffraction classroom blackboard lighting device, by the front of LED lamp fixed plate and positioned at LED lamp Front be fixedly connected with block of lense, block of lense is provided with multiple, is fixedly connected between multiple blocks of lense, LED lamp is fixed The front of plate and be located at multiple blocks of lense two sides between be fixedly connected to rubber seal, the back side of block of lense offers recessed Slot, the middle part of groove are in the shape of convex lens, and block of lense is made by organic glass, so that this blackboard is irradiated with lighting device Light it is farther because scattering light, will not to the eyes of student generate injury so that the student of heel row also can be clearly seen that it is black Content on plate.

Detailed description of the invention

Fig. 1 is the structural front view of the utility model；

Fig. 2 is the structural front view that the utility model seals fixed block and light intensity decreasing plate；

Fig. 3 is the cross-sectional view of the utility model structure；

Fig. 4 is the partial enlarged view in the utility model Fig. 3 at A；

Fig. 5 is the utility model block of lense index path.

In figure: 1- grating type ground glass plate, 2- sealing fixed block, 3- light intensity decreasing plate, 4- card slot, 5-LED wick are solid Fixed board, 6-LED wick, 7- block of lense, 8- rubber seal, 9- groove.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

Fig. 1-5 is please referred to, the utility model provides a kind of technical solution: a kind of anti-diffraction classroom blackboard lighting device, Including grating type ground glass plate 1, the two sides of grating type ground glass plate 1 are fixedly connected to sealing fixed block 2, two sealings Light intensity decreasing plate 3, two sealing fixed blocks 2 are fixedly connected between fixed block 2 and positioned at the back side of grating type ground glass plate 1 Between and be located at light intensity decreasing plate 3 the back side offer card slot 4, the inside of card slot 4 is connected with LED lamp fixed plate 5, LED light Core fixed plate 5 is provided with multiple, is mutually clamped between multiple LED lamp fixed plates 5, the side of LED lamp fixed plate 5 its be located at The back side of light intensity decreasing plate 3 is fixedly connected with LED lamp 6, the front of LED lamp fixed plate 5 and be located at LED lamp 6 just before Side is fixedly connected with block of lense 7, and block of lense 7 is provided with multiple, is fixedly connected, solves existing black between multiple blocks of lense 7 Plate uses the lighting structure of some cable-stayed types with lighting device mostly, but this structure, and it is big to use occupied space, Easily accumulation dust, light resource scatter very fast problem, the front of LED lamp fixed plate 5 and be located at multiple blocks of lense 7 two sides it Between be fixedly connected to rubber seal 8, the back side of block of lense 7 opens up fluted 9, and the middle part of groove 9 is in the shape of convex lens, Block of lense 7 is made by organic glass, and light intensity decreasing plate 3 is made by photochromic material is added in glass raw material, photochromic material such as chlorine The crystallite for changing silver or silver bromide, so that this blackboard is farther with the light that lighting device irradiates, and will not stimulate eyes, because being Light is scattered, injury will not be generated to the eyes of student, so that the student of heel row also can be clearly seen that the content on blackboard.

In use, first mutually will be clamped between multiple LED lamp fixed plates 5, then again by LED lamp fixed plate 5 It snaps fit between two sealing fixed blocks 2, then will be fixedly connected between multiple blocks of lense 7, then by the one of multiple blocks of lense 7 Side is fixedly connected by rubber seal 8 with LED lamp fixed plate 5, then passes through the back side of LED lamp fixed plate 5 Conducting wire and external power supply are electrically connected, and then will be fixedly connected between grating type ground glass plate 1 and light intensity decreasing plate 3, So that grating type ground glass plate 1 and light intensity decreasing plate 3 are fixed to the front of block of lense 7, pass through switch control LED lamp 6 It is bright secretly.

It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment Intrinsic element.

While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.

Claims (5)

1. a kind of anti-diffraction classroom blackboard lighting device, including grating type ground glass plate (1), it is characterised in that: the light The two sides of grid-type ground glass plate (1) are fixedly connected to sealing fixed block (2), between two sealing fixed blocks (2) and Be fixedly connected with light intensity decreasing plate (3) positioned at the back side of grating type ground glass plate (1), two sealing fixed blocks (2) it Between and be located at light intensity decreasing plate (3) the back side offer card slot (4), the inside of the card slot (4) is connected with LED lamp fixed plate (5), LED lamp fixed plate (5) is provided with multiple, is mutually clamped between multiple LED lamp fixed plates (5), the LED light Its back side for being located at light intensity decreasing plate (3) of the side of core fixed plate (5) is fixedly connected with LED lamp (6), and the LED lamp is solid The front of fixed board (5) and be located at LED lamp (6) immediately ahead of be fixedly connected with block of lense (7), the block of lense (7) is provided with It is multiple, it is fixedly connected between multiple blocks of lense (7).

2. a kind of anti-diffraction classroom blackboard lighting device according to claim 1, it is characterised in that: the LED lamp The front of fixed plate (5) and be located at multiple blocks of lense (7) two sides between be fixedly connected to rubber seal (8).

3. a kind of anti-diffraction classroom blackboard lighting device according to claim 1, it is characterised in that: the block of lense (7) the back side opens up fluted (9), and the middle part of the groove (9) is in the shape of convex lens.

4. a kind of anti-diffraction classroom blackboard lighting device according to claim 1, it is characterised in that: the block of lense (7) for made by organic glass.

5. a kind of anti-diffraction classroom blackboard lighting device according to claim 1, it is characterised in that: the light intensity decreasing Plate (3) is made by photochromic material is added in glass raw material, the crystallite of photochromic material such as silver chlorate or silver bromide.