CN213040517U

CN213040517U - Lens and blackboard lamp

Info

Publication number: CN213040517U
Application number: CN202021621078.2U
Authority: CN
Inventors: 谢兵
Original assignee: Zhongshan Senkang Zhizao Lighting Technology Co ltd
Current assignee: Zhongshan Senkang Zhizao Lighting Technology Co ltd
Priority date: 2020-08-06
Filing date: 2020-08-06
Publication date: 2021-04-23
Anticipated expiration: 2030-08-06

Abstract

The utility model discloses a lens, which comprises a lens main body, wherein the front end of the lens main body is provided with a light-emitting surface, the rear end of the lens main body is sunken to form a light inlet groove, the left side wall of the lens main body is provided with a first reflecting surface with the curvature radius of 0.0010-0.0952, the right side wall of the lens main body is provided with a second reflecting surface with the curvature radius of 0.0033-0.0843, and the bottom of the light inlet groove is provided with a refracting surface with the bus curvature of 0.1429-0.1646; a blackboard lamp comprises the lens, a light source component, a shell and a driving component, wherein a containing cavity for containing the light source component and a lens main body is arranged in the shell; the light irradiated on the blackboard can be more reasonable, and the blackboard is beneficial to the students to watch the content of the blackboard and protect the eyes of the students.

Description

Lens and blackboard lamp

Technical Field

The utility model relates to a blackboard lamp field, in particular to blackboard lamp of lens and applied this lens.

Background

The blackboard lamp is the lamps and lanterns of using the blackboard illumination in the classroom, can provide the illumination for teacher and student, but the light-emitting structure of current blackboard lamp has unreasonable shortcoming, and blackboard lamp direct irradiation is on the blackboard, and the problem of reflection of light and highlight can appear in the blackboard, and the student can not see the characters under the highlight on the blackboard, is unfavorable for student's study and eyesight health.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a blackboard lamp of lens and applied this lens can let the blackboard lamp shine the angle on the blackboard better, provides healthy illumination for the student.

The utility model discloses a technical scheme that its technical problem was solved to an embodiment adopted is: a lens comprises a lens body, wherein a light-emitting surface is arranged at the front end of the lens body, the rear end of the lens body is recessed to form a light inlet groove, a first reflecting surface with the curvature radius of 0.0010-0.0952 is arranged on the left side wall of the lens body, a second reflecting surface with the curvature radius of 0.0033-0.0843 is arranged on the right side wall of the lens body, and a refraction surface with the bus curvature of 0.1429-0.1646 is arranged at the bottom of the light inlet groove.

A blackboard lamp comprises a lens, a light source component, a shell and a driving component, wherein the shell is internally provided with a containing cavity used for containing the light source component and a lens main body, light emitted by the light source component is irradiated into the lens main body from a light inlet groove, and the driving component is arranged on the shell and is electrically connected with the light source component.

Furthermore, the light source assembly comprises an aluminum substrate and LED lamp beads, 18-90 degrees of light on the left side of each LED lamp bead is reflected to the first reflecting surface through the light inlet groove and is totally reflected to the light outlet surface by the first reflecting surface; light rays with the angle of-20 to 18 degrees in the middle section of the LED lamp bead are refracted to the light-emitting surface through the refraction surface; light rays with the angle of-20 to-90 degrees at the right side of the LED lamp bead are refracted to the second reflecting surface through the light inlet groove and are totally reflected to the light outlet surface through the second reflecting surface.

Further, the light-emitting deflection angle of the light-emitting surface is 11-13 degrees.

Furthermore, a third reflecting surface is arranged on one side of the shell back to the light emitting direction.

The blackboard lamp further comprises a diffusion plate, a clamping groove is formed in the shell and located below the lens main body, and the diffusion plate is clamped in the clamping groove.

The utility model has the advantages that: a lens comprises a lens body, wherein the front end of the lens body is provided with a light-emitting surface, the rear end of the lens body is recessed to form a light-entering groove, the left side wall of the lens body is provided with a first reflecting surface with the curvature radius of 0.0010-0.0952, the right side wall of the lens body is provided with a second reflecting surface with the curvature radius of 0.0033-0.0843, and the bottom of the light-entering groove is provided with a refracting surface with the bus curvature of 0.1429-0.1646; a blackboard lamp comprises the lens, a light source component, a shell and a driving component, wherein a containing cavity for containing the light source component and a lens main body is arranged in the shell; the light irradiated on the blackboard can be more reasonable, and the blackboard is beneficial to the students to watch the content of the blackboard and protect the eyes of the students.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is an exploded view of a blackboard lamp;

FIG. 2 is a sectional view of a first embodiment of a blackboard lamp;

FIG. 3 is a schematic structural view of a second embodiment of a blackboard lamp;

fig. 4 is a partial structural view of a blackboard lamp.

Detailed Description

This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.

In the description of the present invention, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as excluding the number, and the terms greater than, less than, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the present invention, unless otherwise explicitly defined, the terms "set," "mounted," "connected," and the like are to be understood in a broad sense, and may be directly connected or indirectly connected through an intermediate medium, for example; can be fixedly connected, can also be detachably connected and can also be integrally formed; may be a mechanical connection; either as communication within the two elements or as an interactive relationship of the two elements. The technical skill in the art can reasonably determine the specific meaning of the above words in the present invention by combining the specific contents of the technical solution.

Referring to fig. 1 to 4, a lens includes a lens body 10, a light-emitting surface 11 is disposed at a front end of the lens body 10, a rear end of the lens body 10 is recessed to form a light-entering groove 12, a first reflecting surface 13 having a curvature radius of 0.0010 to 0.0952 is disposed on a left sidewall of the lens body 10, a second reflecting surface 14 having a curvature radius of 0.0033 to 0.0843 is disposed on a right sidewall of the lens body 10, and a refracting surface 15 having a generatrix curvature of 0.1429 to 0.1646 is disposed at a bottom of the light-entering groove 12.

In the present invention, a novel lens is adopted, the left and right sides of the lens main body 10 are respectively provided with a first reflection surface 13 and a second reflection surface 14, the rear end of the lens main body 10 is provided with a light inlet groove 12, the bottom of the light inlet groove 12 is provided with a refraction surface 15, the light emitted from the light source assembly 20 is reflected to the light emitting surface 11 through the first reflection surface 13 and the second reflection surface 14, the light emitting surface 11 transmits the optical fiber to the blackboard, preferably, the curvature radius of the first reflection surface 12 is 0.0010-0.0952, the curvature radius of the second reflection surface 14 is 0.0033-0.0843, the refraction surface 15 is a free curve cylindrical surface, the curvature range of the generatrix thereof is set to be 0.1429-0.1646, and the light distribution deflection angle formed by the lens main body 10 can be 11-13 degrees through the matching of the first reflection surface, the second reflection surface 14 and the refraction surface 15; referring to fig. 3, the dotted line in the figure is a schematic diagram of incidence and emission of light, the light distribution deflection angle is controlled to be 11-13 degrees, so that the blackboard lamp can irradiate on the blackboard more reasonably, the blackboard cannot reflect light or the phenomenon of light reflection occurs as little as possible, a student can better see the content of the blackboard, and the eyesight of the student is protected.

A blackboard lamp comprises a lens, a light source component 20, a shell 30 and a driving component 40, wherein the shell 30 is internally provided with a cavity 31 for accommodating the light source component 20 and a lens main body 10, light emitted by the light source component 20 is irradiated into the lens main body 10 from a light inlet groove 12, and the driving component 40 is arranged on the shell 30 and is electrically connected with the light source component 20.

The light source assembly 20 comprises an aluminum substrate 21 and LED lamp beads 22, and 18-90 degrees of light on the left side of the LED lamp beads 22 is refracted to the first reflecting surface 13 through the light inlet grooves 12 and is totally reflected to the light emitting surface 11 by the first reflecting surface 13; light rays with an angle of-20 to 18 degrees in the middle section of the LED lamp bead 22 are refracted to the light-emitting surface 11 through the refraction surface 15; the light rays at an angle of-20 to-90 degrees from the right side of the LED lamp bead 22 are refracted to the second reflecting surface 14 through the light inlet groove 12, and are totally reflected to the light emitting surface 11 by the second reflecting surface 14.

The light-emitting deflection angle of the light-emitting surface 11 is 11-13 degrees.

A third reflecting surface 50 is arranged on one side of the shell 30 back to the light emitting direction; can be with shining on the light reflection on the third plane of reflection 50 to the blackboard, can avoid light to reveal other places when make full use of light.

Referring to fig. 3, in the second embodiment of the blackboard lamp, a diffusion plate 60 is added, a clamping groove 70 is arranged on the housing 30 and below the lens body 10, and the diffusion plate 60 is clamped in the clamping groove 70; the light irradiated to the blackboard can be made softer by the diffusion plate 60.

Of course, the present invention is not limited to the above-mentioned embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present invention, and such equivalent modifications and substitutions are included in the scope defined by the claims of the present application.

Claims

1. A lens, characterized by: the novel LED light source comprises a lens body (10), wherein a light emitting surface (11) is arranged at the front end of the lens body (10), the rear end of the lens body (10) is recessed to form a light inlet groove (12), a first reflecting surface (13) with the curvature radius of 0.0010-0.0952 is arranged on the left side wall of the lens body (10), a second reflecting surface (14) with the curvature radius of 0.0033-0.0843 is arranged on the right side wall of the lens body (10), and a refraction surface (15) with the bus curvature of 0.1429-0.1646 is arranged at the bottom of the light inlet groove (12).

2. A blackboard lamp is characterized in that: the lens comprises the lens, the light source component (20), the housing (30) and the driving component (40) as claimed in claim 1, wherein the housing (30) has a cavity (31) for accommodating the light source component (20) and the lens main body (10), light emitted by the light source component (20) is irradiated into the lens main body (10) from the light inlet groove (12), and the driving component (40) is arranged on the housing (30) and electrically connected with the light source component (20).

3. A blackboard lamp according to claim 2, characterised in that: the light source assembly (20) comprises an aluminum substrate (21) and LED lamp beads (22), 18-90 degrees of light on the left side of the LED lamp beads (22) is refracted to the first reflecting surface (13) through the light inlet grooves (12) and is totally reflected to the light outlet surface (11) through the first reflecting surface (13); light rays with an angle of-20 to 18 degrees in the middle section of the LED lamp bead (22) are refracted to the light-emitting surface (11) through the refraction surface (15); light rays with angles of-20 degrees to 90 degrees on the right side of the LED lamp bead (22) are refracted to the second reflecting surface (14) through the light inlet groove (12) and are totally reflected to the light emitting surface (11) through the second reflecting surface (14).

4. A blackboard lamp according to claim 2, characterised in that: the light-emitting deflection angle of the light-emitting surface (11) is 11-13 degrees.

5. A blackboard lamp according to claim 2, characterised in that: and a third reflecting surface (50) is arranged on one side of the shell (30) back to the light emitting direction.

6. A blackboard lamp according to claim 2, characterised in that: the lens is characterized by further comprising a diffusion plate (60), a clamping groove (70) is formed in the shell (30) and located below the lens main body (10), and the diffusion plate (60) is clamped in the clamping groove (70).