CN212430759U - Lens for blackboard lamp - Google Patents

Abstract

The utility model relates to the technical field of lenses, in particular to a lens for a blackboard lamp, which comprises a body, wherein the body is transparent, the body is provided with a board surface part and a curved surface part, a sawtooth strip group and two side strips are arranged above the board surface part, the sawtooth strip group comprises a plurality of sawtooth strips which are arranged in parallel, and the surfaces of the side strips are provided with pattern surfaces; curved face portion is equipped with the luminous cavity, and luminous cavity is equipped with first income plain noodles, second income plain noodles and third income plain noodles, and the interval of first income plain noodles and second income plain noodles reduces gradually from keeping away from the face portion to the direction of being close to the face portion, and one side of curved face portion is equipped with first reflection cambered surface, and the opposite side of curved face portion is equipped with the second reflection cambered surface. The utility model has simple structure and convenient use, has the function of reflecting and ejecting light while deflecting the light, plays the role of illuminating a specific area more pertinently, and improves the light projection rate; the utilization rate of light is improved, and light waste is reduced; light emitted from the center of the light source is prevented from forming light spots, and the uniformity and softness of the light are improved.

Description

Lens for blackboard lamp

Technical Field

The utility model relates to a lens technical field, concretely relates to a lens for blackboard lamp.

Background

The blackboard lamp is one of classroom lighting apparatus, mainly used illuminates the region of blackboard, lets mr's writing on blackboard that can be smooth and easy, and the student can clearly see the word on the blackboard. A conventional blackboard lamp requires a lens to be installed.

The existing lens causes low light projection of the blackboard lamp due to the structural limitation, low light utilization rate and light waste; the lens has a problem of non-uniformity of luminosity; moreover, the components inside the device are easy to see through the lens, which affects the appearance, and the problems need to be solved.

Disclosure of Invention

The utility model aims at the above-mentioned not enough among the prior art, provide a lens for blackboard lamp.

In order to achieve the above purpose, the specific scheme of the utility model is as follows: a lens for a blackboard lamp comprises a body, wherein the body is transparent and is provided with a panel surface part and a curved surface part, a sawtooth strip group and two side strips are arranged above the panel surface part, the two side strips are respectively arranged on the left side and the right side of the sawtooth strip group, the sawtooth strip group comprises a plurality of parallel sawtooth strips, the sawtooth strips are inclined towards the same direction, a straight line where each sawtooth strip is located is perpendicular to a straight line where each side strip is located, and a pattern surface is arranged on the surface of each side strip; curved surface portion is equipped with the luminous chamber that is used for holding the light source of establishing the external world, the sunken setting of direction in the luminous chamber toward curved surface portion, luminous chamber is equipped with first income plain noodles, second income plain noodles and third income plain noodles, the both sides in the luminous intracavity are located respectively to first income plain noodles and second income plain noodles, first income plain noodles and second income plain noodles are gone into the plain noodles through the third and are gone into the plain noodles and connect, the interval of first income plain noodles and second income plain noodles reduces from keeping away from the face portion to being close to the direction of face portion gradually, the third is gone into the plain noodles and is set up in the top of first income plain noodles and the top of second income plain noodles, the wave form is personally submitted to third income plain noodles, one side of curved surface.

Further, the quantity of sawtooth strip group is two sets of, two sets of sawtooth strip group are first sub sawtooth strip group and the sub sawtooth strip group of second respectively, first sub sawtooth strip group is including a plurality of first sub sawtooth strips of parallel arrangement, the sub sawtooth strip group of second is including a plurality of sub sawtooth strips of parallel arrangement, a plurality of first sub sawtooth strips all incline toward the same direction, a plurality of sub sawtooth strips of second are all incline toward the same direction, the incline direction of each first sub sawtooth strip is opposite with the incline direction of each sub sawtooth strip of second.

Furthermore, a connecting piece is arranged between the first sub sawtooth strip group and the second sub sawtooth strip group, and the connecting piece is transparent.

Further, the plate surface portion and the curved surface portion are integrally formed.

Further, the lens for the blackboard lamp is a TIR lens.

Further, an RFID chip is arranged in the plate surface part.

The utility model has the advantages that: the utility model discloses simple structure, convenient to use locates the light source of blackboard lamp and holds in the luminous intracavity, and the light that the light source sent is refracted in getting into curved surface portion through first income plain noodles, second income plain noodles and third income plain noodles, and the light after the refraction jets out through face portion, and through a plurality of sawtooth racks that incline to the same direction that face portion set up, play the effect of reflection and jet out on one side of partial deviation to the light, play the effect of more pertinence illumination specific area, improve the throw ratio of light; the first reflection cambered surface and the second reflection cambered surface are arranged, so that scattered light is totally reflected towards the surface of the plate, the utilization rate of the light is improved, and the light waste is reduced; the third light incident surface is arranged in a wavy manner, so that the effect of polarized light is achieved, light emitted from the center of the light source is prevented from forming light spots, and the uniformity and softness of the light are improved. The surface through the side strip is equipped with the decorative pattern face, plays the effect of hiding the internals of blackboard lamp, plays the effect of hiding the ugly, improves aesthetic measure.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a cross-sectional view of the present invention.

Fig. 3 is a schematic structural diagram of the two groups of sawtooth strip groups of the present invention.

Reference numerals: 1. a body; 2. a plate surface portion; 3. a curved surface portion; 4. pattern surface; 5. a sawtooth strip; 6. a light emitting cavity; 7. a first light incident surface; 8. a second light incident surface; 9. a third light incident surface; 10. a first reflective arc surface; 11. a second reflective arc surface; 12. a first sub-sawtooth strip; 13. a second sub-sawtooth strip; 14. a connecting piece.

Detailed Description

The invention will be further described with reference to the following examples.

Please refer to fig. 1 and 2, a lens for a blackboard lamp includes a body 1, the body 1 is transparent, the body 1 is provided with a panel portion 2 and a curved surface portion 3, a sawtooth strip 5 group and two side strips are arranged above the panel portion 2, the two side strips are respectively arranged at the left side and the right side of the sawtooth strip 5 group, the sawtooth strip 5 group includes a plurality of sawtooth strips 5 arranged in parallel, the plurality of sawtooth strips 5 are all inclined towards the same direction, a straight line where each sawtooth strip 5 is located and a straight line where each side strip is located are vertically arranged, and the surface of each side strip is provided with a pattern surface 4; curved surface portion 3 is equipped with the luminous chamber 6 that is used for holding the light source of establishing the external world, luminous chamber 6 sets up towards the orientation of curved surface portion 3 is sunken, luminous chamber 6 is equipped with first income plain noodles 7, second income plain noodles 8 and third income plain noodles 9, both sides in luminous chamber 6 are located respectively to first income plain noodles 7 and second income plain noodles 8, first income plain noodles 7 and second income plain noodles 8 are gone into through the third income plain noodles 9 and are connected, the interval of first income plain noodles 7 and second income plain noodles 8 reduces from keeping away from the orientation of facial portion 2 to being close to facial portion 2 gradually, third income plain noodles 9 sets up in the top of first income plain noodles 7 and the top of second income plain noodles 8, third income plain noodles 9 is the wavy, one side of curved surface portion 3 is equipped with first reflection cambered surface 10, the opposite side of curved surface portion 3 is equipped with second reflection.

The utility model discloses simple structure, convenient to use, the light source with the blackboard lamp is held and is located luminous cavity 6, the light that the light source sent gets into curved surface portion 3 through first income plain noodles 7, second income plain noodles 8 and third income plain noodles 9 and refracts in, light after the refraction jets out through panel portion 2, through a plurality of sawtooth racks 5 that incline to the same direction that panel portion 2 set up, play the effect of reflection and jet out on one side of partial deviation to the light, play and aim at the effect of shining specific area more pertinently, improve the throw ratio of light; by arranging the first reflecting arc surface 10 and the second reflecting arc surface 11, scattered light is totally reflected towards the plate surface part 2, the utilization rate of the light is improved, and the light waste is reduced; the third light incident surface 9 is arranged in a wavy manner, so that the effect of polarized light is achieved, light emitted from the center of the light source is prevented from forming light spots, and the uniformity and softness of the light are improved. The surface through the side strip is equipped with decorative pattern face 4, plays the effect of hiding the internals of blackboard lamp, plays the effect of hiding the ugly, improves aesthetic measure.

As shown in fig. 3, in this embodiment, the number of the sawtooth rack 5 groups is two, the two sawtooth rack 5 groups are a first sub sawtooth rack group and a second sub sawtooth rack group respectively, the first sub sawtooth rack group includes a plurality of first sub sawtooth racks 12 arranged in parallel, the second sub sawtooth rack group includes a plurality of second sub sawtooth racks 13 arranged in parallel, the plurality of first sub sawtooth racks 12 incline in the same direction, the plurality of second sub sawtooth racks 13 incline in the same direction, and the inclination direction of each first sub sawtooth rack 12 is opposite to the inclination direction of each second sub sawtooth rack 13.

Specifically, the arrangement is that a part of light rays are deflected to one side to be emitted through the plurality of first sub-sawtooth strips 12, and the other part of light rays are deflected to the other side to be emitted through the plurality of second sub-sawtooth strips 13, so that the projection rate of light on the two sides is further improved. The uniformity of light on the blackboard is improved.

In this embodiment, a joint member 14 is disposed between the first sub-sawtooth strip group and the second sub-sawtooth strip group, and the joint member 14 is transparent. This arrangement serves to connect the first sub-group of saw teeth bars and the second sub-group of saw teeth bars.

In this embodiment, the plate surface portion 2 and the curved surface portion 3 are integrally formed. This arrangement improves the hardness of the plate surface portion 2 and the curved surface portion 3, and prevents the plate surface portion 2 and the curved surface portion 3 from breaking.

In this embodiment, the lens for the blackboard lamp is a TIR lens. Specifically, TIR is totally called Total Internal Reflection, and this arrangement achieves Total Internal transflective effect and increases the light diffusion range.

In this embodiment, an RFID chip is provided in the panel surface portion 2. The information of the RFID chip is read by an external RFID reader-writer, so that the size information and the type information of the lens are obtained, the lens is automatically and digitally recorded, statistics and classification are convenient, corresponding replacement or maintenance is convenient according to the information, and the RFID reader-writer can be the prior art.

It should be finally noted that the above embodiments are only intended to illustrate the technical solutions of the present invention, and not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims (6)

1. A lens for a blackboard lamp, characterized in that: the novel sawtooth rack comprises a body (1), wherein the body (1) is transparent, the body (1) is provided with a panel surface part (2) and a curved surface part (3), a sawtooth strip group and two side strips are arranged above the panel surface part (2), the two side strips are respectively arranged on the left side and the right side of the sawtooth strip group, the sawtooth strip group comprises a plurality of sawtooth strips (5) which are arranged in parallel, the sawtooth strips (5) are inclined towards the same direction, a straight line where each sawtooth strip (5) is located and a straight line where each side strip is located are vertically arranged, and the surfaces of the side strips are provided with patterned surfaces (4); the curved surface part (3) is provided with a light emitting cavity (6) used for containing an external light source, the light emitting cavity (6) is arranged in a concave mode towards the direction in the curved surface part (3), the light emitting cavity (6) is provided with a first light incoming surface (7), a second light incoming surface (8) and a third light incoming surface (9), the first light incoming surface (7) and the second light incoming surface (8) are respectively arranged on two sides in the light emitting cavity (6), the first light incoming surface (7) and the second light incoming surface (8) are connected through the third light incoming surface (9), the distance between the first light incoming surface (7) and the second light incoming surface (8) is gradually reduced from the direction far away from the plate part (2) to the direction close to the plate part (2), the third light incoming surface (9) is arranged above the first light incoming surface (7) and above the second light incoming surface (8), the third light incoming surface (9) is wavy, one side of the curved surface part (3) is provided with a, the other side of the curved surface part (3) is provided with a second reflecting curved surface (11).

2. A lens for a blackboard lamp according to claim 1, characterised in that: the quantity of sawtooth strip group is two sets of, two sets of sawtooth strip group are first sub sawtooth strip group and the sub sawtooth strip group of second respectively, first sub sawtooth strip group is including a plurality of first sub sawtooth strips (12) of parallel arrangement, the sub sawtooth strip group of second is including a plurality of sub sawtooth strips (13) of parallel arrangement's of parallel arrangement, a plurality of first sub sawtooth strips (12) are all towards the same direction slope, a plurality of sub sawtooth strips (13) of second are all towards the same direction slope, the slope direction of each first sub sawtooth strip (12) is opposite with the slope direction of each sub sawtooth strip (13) of second.

3. A lens for a blackboard lamp according to claim 1, characterised in that: a connecting piece (14) is arranged between the first sub sawtooth strip group and the second sub sawtooth strip group, and the connecting piece (14) is transparent.

4. A lens for a blackboard lamp according to claim 1, characterised in that: the plate surface part (2) and the curved surface part (3) are integrally formed.

5. A lens for a blackboard lamp according to claim 1, characterised in that: the lens for the blackboard light is a TIR lens.

6. A lens for a blackboard lamp according to claim 1, characterised in that: an RFID chip is arranged in the panel surface part (2).

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