Guitar light guide plate

Abstract

The present invention provides a guitar light guide plate, comprising a two-color injection molded light guide, a lower adhesive backing arranged at the bottom of the two-color injection molded light guide, a diffusion film adhered to the top of the two-color injection molded light guide through the adhesive backing of the diffusion film, and an upper adhesive backing adhered to the top of the diffusion film; the two-color injection molded light guide comprises a single-color injection molded part and a two-color injection molded part; the single-color injection molded part is a light reflecting material and is in a plate-like structure; a plurality of through holes distributed in a rectangular array are provided on the single-color injection molded part, and a mounting groove is provided at one end corresponding to each through hole at the bottom, and the through holes corresponding to the same column are connected through a connecting groove; the two-color injection molded part is a light-transmitting material and is molded at the position of the through hole; the two-color injection molded parts corresponding to the position of the through holes in the same column are connected at the position of the connecting groove through a connecting block; the lower adhesive backing air-avoiding through hole and the mounting groove are adhered to the single-color injection molded part and the bottom surface of the connecting block; the present invention has high brightness and does not produce cross-light phenomenon.

Description

Technical Field

[0001] The invention relates to the technical field of light guide plates, and in particular to a guitar light guide plate. Background Art

[0002] A guitar has six strings, and different positions on each string will produce different tones. In order to help beginners find the correct position, it is necessary to design a light guide plate integrated on the guitar. The light guide plate is controlled by a controller, paired with music, and lights up at the corresponding position, making it convenient for students to find the correct position to practice playing. However, since adjacent strings on the guitar are relatively close, the light guide plate is prone to cross-talk, which affects students' ability to find the correct position. Summary of the invention

[0003] The object of the present invention is to provide a guitar light guide plate to solve the problems mentioned in the background technology.

[0004] In order to achieve the above object, the present invention provides the following technical solutions:

[0005] A guitar light guide plate, comprising a two-color injection molded light guide, a lower adhesive disposed at the bottom of the two-color injection molded light guide, a diffusion film adhered to the top of the two-color injection molded light guide through the diffusion film adhesive, and an upper adhesive adhered to the top of the diffusion film; the two-color injection molded light guide comprises a single-color injection molded part and a two-color injection molded part; the single-color injection molded part is made of a light reflecting material and is in a plate-like structure; the single-color injection molded part is provided with a plurality of through holes distributed in a rectangular array; the bottom of the single-color injection molded part is provided with a mounting groove corresponding to one end of each through hole; the one The bottom of the one-color injection molded part corresponds to the same column of through holes and is connected through a connecting groove; the two-color injection molded part is a light-transmitting material; the two-color injection molded part is injection-molded at the through hole position; the two-color injection molded parts corresponding to the through hole position in the same column are connected at the connecting groove position through a connecting block; the lower adhesive backing air-avoiding through hole and the installation groove are attached to the one-color injection molded part and the bottom surface of the connecting block; the diffusion film covers the one-color injection molded part and the through hole; the upper adhesive backing air-avoiding through hole covers the diffusion film; the lower adhesive backing and the upper adhesive backing are both black double-sided adhesive.

[0006] To further describe the present invention, the adhesive backing of the diffusion film is a transparent double-sided adhesive; the adhesive backing of the diffusion film is attached between the single-color injection molded part and the diffusion film by avoiding air holes.

[0007] To further describe the present invention, the thickness of the diffusion membrane adhesive is 0.03 mm.

[0008] To further describe the present invention, the thickness of the lower adhesive and the upper adhesive are both 0.12 mm.

[0009] To further describe the present invention, the material of the one-color injection molded part is white raw material URZ2501 plus 0.7% black toner.

[0010] To further describe the present invention, the material of the two-color injection molded part is transparent Mitsubishi PmmA; and the bottom surface of the two-color injection molded part is molded with light guide points of optical microstructures.

[0011] Further describing the present invention, the front and rear side walls of the installation groove close to the through hole are connected to the through hole through a guiding slope; one end of the two-color injection molded part extends into the installation groove and fits with the guiding slope.

[0012] To further describe the present invention, six through holes are arranged in each row on the single-color injection molded part.

[0013] To further describe the present invention, the connecting groove is arranged on a side away from the mounting groove.

[0014] To further describe the present invention, a circular sink is provided at the bottom of the connection block; and the injection port of the two-color injection molded part is located at the sink.

[0015] The beneficial effects of the present invention are:

[0016] The LED lamp beads are installed in the installation groove, and the light source is irradiated to the two-color injection molded parts. Since the one-color injection molded parts are made of optical reflective materials, the problem of low brightness caused by insufficient reflectivity of the two-color injection molded cross-section is solved. The light is fully reflected in the two-color injection molded parts. Since the connection block is molded at the connection groove position, the thickness is relatively thin, and light is not easy to enter. In addition, both the upper and lower back glues are blocked by black double-sided tape to reduce the light passing through the connection block position, thereby preventing the problem of cross-lighting, so that the LED lamp beads in each area only show light at the through holes at the corresponding positions. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the overall structure diagram of the present invention;

[0018] Figure 2 is an exploded view of the present invention;

[0019] Figure 3 It is a bottom view of the double-color injection-molded light guide of the present invention;

[0020] Figure 4 It is a bottom view of the single-color injection molded part of the present invention. DETAILED DESCRIPTION

[0021] The present invention will be further described below in conjunction with the accompanying drawings:

[0022] like Figure 1-4As shown, a guitar light guide plate comprises a two-color injection molded light guide 1, a lower adhesive 2 arranged at the bottom of the two-color injection molded light guide 1, a diffusion film 4 attached to the top of the two-color injection molded light guide 1 through a diffusion film adhesive 3, and an upper adhesive 5 attached to the top of the diffusion film 4; the two-color injection molded light guide 1 comprises a single-color injection molded part 11 and a two-color injection molded part 12; the single-color injection molded part 11 is a light reflective material and has a plate-like structure; the single-color injection molded part 11 is provided with a plurality of through holes 1 distributed in a rectangular array 11; the bottom of the one-color injection molded part 11 is provided with a mounting groove 112 corresponding to one end of each through hole 111; the bottom of the one-color injection molded part 11 is connected to the through holes 111 in the same row through the connecting groove 113; the two-color injection molded part 12 is a light-transmitting material; the two-color injection molded part 12 is injection molded at the position of the through hole 111; the two-color injection molded parts 12 corresponding to the positions of the through holes 111 in the same row are connected at the connecting groove 113 through the connecting block 121; the lower back glue 2 avoids air The through hole 111 and the mounting groove 112 are attached to the bottom surface of the one-color injection molded part 11 and the connecting block 121; the diffusion film 4 covers the one-color injection molded part 11 and the through hole 111; the upper adhesive 5 avoids the through hole 111 and covers the diffusion film 4; the lower adhesive 2 and the upper adhesive 5 are both black double-sided adhesive; the LED lamp beads are installed in the mounting groove 112, and the light source is irradiated to the two-color injection molded part 12. Since the one-color injection molded part 11 adopts optical reflective material, the problem of low brightness caused by insufficient reflectivity of the two-color injection molding cross-section is solved, and the light is fully reflected in the two-color injection molded part 12. Since the connecting block 121 is formed at the connecting groove 113, the thickness is relatively thin, and the light is not easy to enter. In addition, the upper adhesive 5 and the lower adhesive 2 are both black double-sided adhesive for light blocking, reducing the light passing through the connecting block 121, thereby preventing the problem of cross-lighting, so that the LED lamp beads in each area only show light at the through hole 111 at the corresponding position, and the setting of the diffusion film 4 atomizes the light.

[0023] The diffusion film adhesive 3 is a transparent double-sided adhesive, which only has the function of bonding, so a transparent double-sided adhesive is used, and the thickness can be set to 0.03 mm; the diffusion film adhesive 3 is attached between the single-color injection molded part 11 and the diffusion film 4 to avoid affecting the light effect at the position of the through hole 111.

[0024] The thickness of the lower adhesive 2 and the upper adhesive 5 are both 0.12 mm. Since the upper adhesive 5 and the lower adhesive 2 need not only to have bonding functions but also to have shading functions, the thickness of the upper adhesive 5 and the lower adhesive 2 is set to 0.12 mm in this design.

[0025] The material of the single-color injection molded part 11 is white raw material URZ2501 plus 0.7% black toner. URZ2501 is a PC plastic particle with high reflectivity. The high reflectivity can improve the brightness of light. The addition of 0.7% black toner is to reduce the cross-talk problem.

[0026] The material of the two-color injection molded part 12 is transparent Mitsubishi PmmA; the bottom surface of the two-color injection molded part 12 is molded with a light guide point with an optical microstructure, and the transparent Mitsubishi PmmA has high light transmittance. The light is diffusely reflected from the light guide point to the upper light output surface, and the light and the light guide point are atomized through the diffusion film 4 to achieve uniform backlighting in a single area.

[0027] The front and rear side walls of the mounting groove 112 close to the through hole 111 are connected to the through hole 111 via a guiding slope 1121 ; one end of the two-color injection molded part 12 extends into the mounting groove 112 and fits into the guiding slope 1121 , which facilitates light to enter the two-color injection molded part 12 .

[0028] Six through holes 111 are arranged in each row on the single-color injection molded part 11. A guitar has six strings, so six through holes 111 are arranged in each row. There are also guitars with four, five, eight strings, etc., which can be designed according to the specifications of the product.

[0029] In this design, the connecting groove 113 is arranged on a side away from the mounting groove 112 .

[0030] A circular groove 122 is provided at the bottom of the connecting block 121; the injection port of the two-color injection molded part 12 is located at the position of the groove 122; when the two-color injection molded light guide part 1 is injection molded, the one-color injection molded part 11 is first injected in the first injection, and the two-color injection molded part 12 is injected in the second injection. The glue inlet of the two-color injection molded part 12 is located at the bottom of the connecting block 121 to prevent the injection glue inlet from affecting the light guide of the two-color injection molded part 12. The bottom of the connecting block 121 is set as a circular groove 122, which can not only prevent the intrusion of the water outlet from affecting the assembly, but also reduce the material thickness at this position to avoid the problem of light crosstalk from this position.

[0031] The working principle of this embodiment:

[0032] The LED lamp bead is installed in the installation groove 112, and the light is incident on the two-color injection molded part 12. At the same time, the one-color injection molded part 11 reflects the light, so that the light is radiated in the two-color injection molded part 12, and then diffusely reflected by the light guide point on the back of the two-color injection molded part 12 to the light output surface above the two-color injection molded part 12. The light and the light guide point are atomized by the diffusion film 4, and uniform light is emitted above the independent through hole 111.

[0033] The above description does not limit the technical scope of the present invention in any way. Any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A guitar light guide plate, Features: The invention comprises a two-color injection molded light guide, a lower adhesive provided at the bottom of the two-color injection molded light guide, a diffusion film attached to the top of the two-color injection molded light guide through the adhesive of the diffusion film, and an upper adhesive attached to the top of the diffusion film; the two-color injection molded light guide comprises a single-color injection molded part and a two-color injection molded part; the single-color injection molded part is made of a light reflecting material and has a plate-like structure; the single-color injection molded part is provided with a plurality of through holes distributed in a rectangular array; the bottom of the single-color injection molded part is provided with a mounting groove corresponding to one end of each through hole; the single-color injection molded part The bottom of the corresponding through holes in the same column are connected through the connecting groove; the two-color injection molded parts are made of light-transmitting materials; the two-color injection molded parts are injection molded at the through hole positions; the two-color injection molded parts corresponding to the through hole positions in the same column are connected at the connecting groove positions through the connecting block; the lower adhesive backing air-avoiding through hole and the mounting groove are attached to the one-color injection molded parts and the bottom surface of the connecting block; the diffusion film covers the one-color injection molded parts and the through hole; the upper adhesive backing air-avoiding through hole covers the diffusion film; the lower adhesive backing and the upper adhesive backing are both black double-sided adhesive; The adhesive backing of the diffusion film is a transparent double-sided adhesive; the adhesive backing of the diffusion film is attached between the one-color injection molded part and the diffusion film to avoid air holes; The front and rear side walls of the mounting groove close to the through hole are connected to the through hole through a guiding slope; one end of the two-color injection molded part extends into the mounting groove and fits the guiding slope; The connecting groove is arranged on a side away from the mounting groove; The LED lamp beads are installed in the installation groove, and the light source is irradiated to the two-color injection molded part. Since the one-color injection molded part uses optical reflective material, the light is fully reflected in the two-color injection molded part.

2. A guitar light guide plate according to claim 1, Features: The thickness of the diffusion film adhesive is 0.03 mm.

3. A guitar light guide plate according to claim 1, Features: The thickness of the lower adhesive and the upper adhesive is 0.12 mm.

4. The guitar light guide plate according to claim 1, Features: The material of the one-color injection molded part is white raw material URZ2501 plus 0.7% black color powder.

5. The guitar light guide plate according to claim 1, Features: The bottom surface of the two-color injection molded part is molded with a light-guiding point of an optical microstructure.

6. The guitar light guide plate according to claim 1, Features: Six through holes are arranged in each row on the single-color injection molded part.

7. The guitar light guide plate according to claim 1, Features: A circular sink groove is provided at the bottom of the connecting block; the injection port of the two-color injection molded part is located at the sink groove position.

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