CN215180987U

CN215180987U - Light guide plate of desk lamp

Info

Publication number: CN215180987U
Application number: CN202121734377.1U
Authority: CN
Inventors: 商玉伟; 曾文进
Original assignee: Xiamen Zhaosong Photoelectric Technology Co ltd
Current assignee: Xiamen Zhaosong Photoelectric Technology Co ltd
Priority date: 2021-07-28
Filing date: 2021-07-28
Publication date: 2021-12-14
Anticipated expiration: 2031-07-28

Abstract

The utility model discloses a desk lamp light guide plate, which comprises a light guide plate body, a diffusion plate, a reflection paper and a reflection edge strip; the bottom surface of the light guide plate body is provided with a plurality of mesh points; the reflecting paper is fixed on the bottom surface of the light guide plate body; the diffusion plate is arranged on the light-emitting surface of the light guide plate body; the light guide plate body is an injection molding plate, and incident light is incident into the light guide plate body from one side; the reflection edge strips are arranged on the side edges of the light guide plate body except the light incident side, and the light guide plate body and the diffusion plate are bonded together from the side edges through the reflection edge strips; the utility model discloses an adopt PET single face dull polish reflection paper, PMMA injection moulding light guide plate and the pure diffusion plate that passes through of PS two dull polish to be in the same place, let whole light emitting area even under the condition of solving the light guide plate degree of consistency, effectively improve whole yield, more practice thrift the cost.

Description

Light guide plate of desk lamp

Technical Field

The utility model relates to a light guide plate technical field, specific desk lamp light guide plate that says so.

Background

The standard requirement of AA-level illuminance of the eye-protection desk lamp is that the illuminance in an area, which is cut by a front fan and is within one third of a circle center radius distance of 50 centimeters, is more than 300LX, the illuminance in an area, which is within one third of a circle center radius distance of 30 centimeters, is more than 500LX, and the illuminance uniformity in a unit area is less than or equal to 3. The prior desk lamp light guide plate has the following technical defects: 1. the surface of the light guide plate is processed by using a laser marking machine to be provided with dust, the dust on the surface needs to be cleaned by washing, and the laser energy can slightly fluctuate to cause corresponding fluctuation of uniformity; 2. the light guide plate is cut by laser, a melted edge is arranged on the periphery of the cut edge of the light guide plate, a large amount of powder is generated in the film tearing process, 3% -4% of leakage points are poor under the condition of cleaning in place, white points are easy to generate when the other film is torn in the assembling process, 5% -6% of poor quality is caused, the assembling progress is influenced, and the whole scrapped defective product is 10%; 3. the integral uniformity of the processed mesh points of the flat light guide plate is close to 3, the light guide plate is not tightly attached to the lamp beads in the assembling process, the uniformity can exceed 3, and the assembling requirement is high; 4. the integral uniformity of the mesh points processed by the structural light guide plate can reach 2.7, but the structural lines on the light guide plate and the integral light emitting surface are rough to see by matching with the pure transmission diffusion plate.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a desk lamp light guide plate, this desk lamp light guide plate adopt PET single face dull polish reflection paper, PMMA injection moulding light guide plate and the pure diffusion plate that passes through of PS two dull polish to combine together, let whole light emitting area even under the condition of solving the light guide plate degree of consistency, effectively improve whole yield, more practice thrift the cost.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a desk lamp light guide plate comprises a light guide plate body, a diffusion plate, reflection paper and reflection edgings; the bottom surface of the light guide plate body is provided with a plurality of mesh points; the reflecting paper is fixed on the bottom surface of the light guide plate body; the diffusion plate is arranged on the light-emitting surface of the light guide plate body; the light guide plate body is an injection molding plate, and incident light is incident into the light guide plate body from one side; the reflection edgings are arranged on the side edges of the light guide plate body except the light incident side, and the light guide plate body and the diffusion plate are bonded together from the side edges through the reflection edgings.

Furthermore, the light-emitting surface of the light guide plate body is a frosted fog surface.

Further, the light guide plate body is a PMMA injection molding plate.

Furthermore, the diffusion plate is a PS double-frosted pure-transparent diffusion plate.

Further, the reflective paper is PET single-side frosted reflective paper.

Furthermore, the mesh point spacing on the light guide plate body is gradually reduced from the light incident side to the light emergent side; the mesh point spacing perpendicular to the incident light direction is gradually reduced from the middle of the light guide plate body to two ends; the adjacent mesh points are arranged in a staggered mode, and incident light is diffusely reflected to the light emitting surface through the mesh points.

After the technical scheme is adopted, the utility model discloses following beneficial effect has:

1. the utility model relates to a desk lamp light guide plate adopts PET single face dull polish reflection paper, PMMA injection moulding light guide plate and the pure diffusion plate that passes through of PS double dull polish to combine together, lets whole light emitting area even under the condition of solving the light guide plate degree of consistency, effectively improves whole yield, more practices thrift the cost.

2. The utility model relates to a desk lamp light guide plate, injection moulding's light guide plate body, the cleanliness factor is high, and no leak source, dust phenomenon pass through the rational design to the site again, and the whole illuminance degree of consistency reaches 2.7, and stability is good, and degree of consistency fluctuation range is little, can make whole desk lamp shine the region more even, has better guard action to user's eyesight.

3. The utility model relates to a desk lamp light guide plate adopts light guide plate body, diffuser plate and reflection paper three-piece suit compound mode, has promoted whole lamp assembly efficiency, has improved the product yield.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic view of the three-dimensional structure of the present invention without the reflection paper;

FIG. 3 is a schematic view of the bottom structure of the present invention when the reflective paper is not installed;

fig. 4 is the whole light test point diagram of the present invention.

The reference numbers in the figures denote:

1. a light guide plate body; 10. a mesh point; 2. a diffusion plate; 3. a reflective paper; 4. a reflective edge strip.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention 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 invention and are not intended to limit the invention.

Referring to fig. 1 to 4, a light guide plate of a desk lamp includes a light guide plate body 1, a diffusion plate 2, a reflection paper 3 and a reflection edge 4; the bottom surface of the light guide plate body 1 is provided with a plurality of mesh points 10; the reflecting paper 3 is fixed on the bottom surface of the light guide plate body 1; the diffusion plate 2 is arranged on the light-emitting surface of the light guide plate body 1; the light guide plate body 1 is an injection molding plate, incident light enters the light guide plate body 1 from one side, and the incident direction of the incident light is along the y-axis direction in fig. 1 and 2; reflection strake 4 sets up in the side of light guide plate body 1 except that going into the light side, bonds light guide plate body 1 and diffuser plate 2 from the side through reflection strake 4 and is in the same place, and can reduce the incident light and outwards jet out from light guide plate body 1 and diffuser plate 2 side, improves the light-emitting effect of light guide plate.

As shown in fig. 1 and 2, the light emitting surface of the light guide plate body 1 is a frosted surface, which can cover slight flaws of the light guide plate body 1 and improve uniformity.

As shown in fig. 1 to 3, the light guide plate body 1 is a PMMA injection molded plate.

As shown in fig. 1 and 2, the diffuser plate 2 is a PS double-frosted clear diffuser plate.

As shown in fig. 1, the reflective paper 3 is PET single-sided frosted reflective paper.

As shown in fig. 1 to fig. 3, the pitch of the dots 10 on the light guide plate body 1 gradually decreases from the light incident side to the light emergent side, that is, the pitch of the dots 10 gradually decreases along the y-axis direction; the pitch of the mesh points 10 perpendicular to the incident light direction is gradually reduced from the middle of the light guide plate body 1 to two ends, that is, the pitch of the mesh points 10 is gradually reduced from the middle of the light guide plate body 1 to two ends along the x-axis direction; the adjacent mesh points 10 are arranged in a staggered mode, incident light is diffusely reflected to the light-emitting surface through the mesh points 10, and therefore the picture stripes can be effectively faded.

According to the point positions in fig. 4, the light guide plate is subjected to uniformity tests, and the test results of the ten-point uniformity test point positions are shown in table 1.

Table 1 shows the test results of the light guide plate

Can know by table 1, the utility model discloses a whole illuminance degree of consistency of light guide plate reaches 2.7 (highest numerical value/minimum numerical value), and stability is good, and degree of consistency fluctuation range is little, can make whole desk lamp shine the region more even, has better guard action to user's eyesight.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a desk lamp light guide plate which characterized in that: comprises a light guide plate body (1), a diffusion plate (2), reflection paper (3) and reflection edgings (4); the bottom surface of the light guide plate body (1) is provided with a plurality of mesh points (10); the reflecting paper (3) is fixed on the bottom surface of the light guide plate body (1); the diffusion plate (2) is arranged on the light-emitting surface of the light guide plate body (1); the light guide plate body (1) is an injection molding plate, and incident light is incident into the light guide plate body (1) from one side; the reflection edge strips (4) are arranged on the side edges of the light guide plate body (1) except the light incident side, and the light guide plate body (1) and the diffusion plate (2) are bonded together from the side edges through the reflection edge strips (4).

2. The light guide plate for a desk lamp as claimed in claim 1, wherein: the light emitting surface of the light guide plate body (1) is a frosted fog surface.

3. The light guide plate for a desk lamp as claimed in claim 1, wherein: the light guide plate body (1) is a PMMA injection molding plate.

4. The light guide plate for a desk lamp as claimed in claim 1, wherein: the diffusion plate (2) is a PS double-frosted pure-transparent diffusion plate.

5. The light guide plate for a desk lamp as claimed in claim 1, wherein: the reflecting paper (3) is PET single-side frosted reflecting paper.

6. The light guide plate for a desk lamp as claimed in claim 1, wherein: the space between the screen dots (10) on the light guide plate body (1) is gradually reduced from the light inlet side to the light outlet side; the space between the mesh points (10) vertical to the incident light direction is gradually reduced from the middle of the light guide plate body (1) to two ends; the adjacent mesh points (10) are arranged in a staggered mode, and incident light is diffusely reflected to the light-emitting surface through the mesh points (10).