Light-emitting panel adopting in-film injection molding process and processing method of light-emitting panel

Abstract

The invention discloses a light-emitting panel of an in-film injection molding process and a processing method of the light-emitting panel. A light-emitting panel of an in-membrane injection molding process comprises a panel base body, the panel base body comprises a ceramic membrane and a light-shading plastic panel integrally connected with the ceramic membrane, a light-transmitting window is formed in the light-shading plastic panel, and a limiting protrusion partially embedded into the light-transmitting window is arranged on the ceramic membrane; the LED lamp further comprises a light-emitting assembly, the light-emitting assembly comprises a light shield, a light guide part, a light-shielding sealing cover and a light-emitting circuit board, the light guide part comprises a light-transmitting plate and a light-transmitting cover with a downward opening, the light-transmitting plate is connected with the top of the light-transmitting cover, and the lower end of the light-transmitting cover is open; a part of the light-transmitting plate is embedded into the light-transmitting window, and a gap exists between the top face of the light-transmitting plate and the ceramic diaphragm. The shading plastic panel and the ceramic diaphragm are integrally connected, so that the connection stability of the diaphragm and the shading plastic panel is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of luminous accessories, in particular to a luminous panel. Background Art

[0002] Existing light-emitting panels often have film materials attached to the outside of plastic panels. For example, a Chinese patent with publication number CN212556090U discloses a car interior light-emitting panel, which includes a plastic plate, and a film paper is attached to one side of the plastic plate, and the film paper and the plastic plate are tightly attached together. The connection between the traditional film material and the plastic panel is made by gluing, etc., which easily leads to unevenness at the connection between the film material and the plastic panel. Summary of the invention

[0003] In view of the problems existing in the prior art, the present invention provides a light-emitting panel using an in-film injection molding process and a processing method thereof to solve at least one of the above technical problems.

[0004] In order to achieve the above-mentioned object, the present invention provides a light-emitting panel using an in-film injection molding process, comprising a panel substrate, characterized in that the panel substrate comprises a ceramic diaphragm and a light-shielding plastic panel integrally connected to the ceramic diaphragm, a light-transmitting window is provided on the light-shielding plastic panel, and a limiting protrusion partially embedded in the light-transmitting window is provided on the ceramic diaphragm;

[0005] It also includes a light-emitting component, the light-emitting component includes a light shield, a light guide, a light shielding cover and a light-emitting circuit board, the light guide includes a light-transmitting plate and a light-transmitting cover with an opening facing downward, the light-transmitting plate is connected to the top of the light-transmitting cover, and the lower end of the light-transmitting cover is open;

[0006] A portion of the light-transmitting plate is embedded in the light-transmitting window, and a gap exists between the top surface of the light-transmitting plate and the ceramic diaphragm;

[0007] The top surface of the light-transmitting cover is in close contact with the injection molded part, and the light-transmitting cover and the light-shielding cover are detachably connected to form a cavity for accommodating the light-emitting circuit board, and the light-emitting circuit board is equipped with a light-emitting element with the light-emitting direction facing upward;

[0008] The plastic shading panel and the shading cover form a cavity for accommodating the light-transmitting plate.

[0009] The present invention ensures the connection stability between the film material and the light-shielding plastic panel by integrating the light-shielding plastic panel with the ceramic diaphragm. The light-emitting component is structurally optimized to facilitate the independent disassembly and assembly of the light-emitting circuit board.

[0010] Further preferably, the panel substrate is formed by placing the ceramic diaphragm into a cavity of an injection mold and performing injection molding of the light-shielding plastic panel; after molding, the light-shielding plastic panel is integrally connected to the ceramic diaphragm.

[0011] Further preferably, mounting posts are provided on both sides of the light-transmitting window in the length direction;

[0012] An extension ear portion extending outward is arranged on the opposite side of the light shield, a mounting hole is opened in the extension ear portion, and the extension ear portion is detachably connected to the mounting column by a screw passing through the mounting hole.

[0013] Further preferably, the outer edge of the light-transmitting window is provided with a peripheral edge extending downward;

[0014] The light shield comprises a bottom plate and a side wall, the side wall is provided with a notch for limiting the position of the light guide member, the notch comprises a top notch portion and a side notch portion which are connected to each other;

[0015] The side notch portion is longitudinally plugged into the light-transmitting cover;

[0016] The top notch portion of the light shield and the light shielding plastic panel form a long light-guiding gap;

[0017] The connection between the light-transmitting plate and the light-transmitting cover is located in the light-guiding gap, and a groove for embedding the surrounding edge is provided at the connection between the light-transmitting plate and the light-transmitting cover;

[0018] The side wall is provided with a limiting groove embedded in the surrounding edge at the portion where the top notch is not provided.

[0019] It is convenient to form a light outlet with long strip output.

[0020] Further preferably, the center of the lengthwise side of the light-transmitting plate is connected to the light-transmitting cover;

[0021] The top surface of the light-transmitting cover is tilted downward from the side adjacent to the light-transmitting plate to the side away from the light-transmitting plate.

[0022] Further preferably, a positioning pin and a connecting buckle are provided on a side of the light-shielding plastic panel away from the ceramic diaphragm.

[0023] Further preferably, the upper surface of the ceramic diaphragm is covered with a printed coating.

[0024] Further preferably, the light-transmitting plate is provided with a convex dot array matching the contour trajectory of the printed coating.

[0025] Further preferably, a guide column is provided on the light-transmitting cover, and a notch which is longitudinally slid into and connected to the guide column is provided on the outer edge of the light-emitting circuit board;

[0026] The top of the guide column is a limiting protrusion used to resist the light-emitting circuit board;

[0027] The light-shielding cover is provided with supporting feet for supporting the lower side of the light-emitting circuit board;

[0028] The light-emitting circuit board is sandwiched between the limiting protrusion and the supporting foot.

[0029] A method for processing a light-emitting panel using an in-film injection molding process, characterized in that it comprises the following steps:

[0030] Step 1: Ceramic membrane processing;

[0031] Step 2: placing the ceramic film into a molding cavity of an injection mold, and injection molding a panel substrate integrating the ceramic film and the light-shielding plastic panel;

[0032] Step 3, the panel substrate is connected to the light shield to clamp the light guide;

[0033] Step 4: The light-emitting circuit board is installed in the light-transmitting cover of the light-guiding member, and then covered with a light-shielding cover.

[0034] Beneficial effects:

[0035] The present invention ensures the connection stability between the film material and the light-shielding plastic panel by integrating the light-shielding plastic panel with the ceramic diaphragm. The light-emitting component is structurally optimized to facilitate the independent disassembly and assembly of the light-emitting circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A cross-sectional view of the present invention;

[0037] Figure 2 A structural schematic diagram of the present invention;

[0038] Figure 3 An exploded view of the present invention;

[0039] Figure 4 It is a schematic diagram of a structure of the present invention without connecting the lead wire;

[0040] Figure 5 It is a schematic diagram of the light guide member and the light shield of the present invention in a combined state;

[0041] Figure 6 is a schematic structural diagram of a light guide member of the present invention;

[0042] Figure 7 It is a schematic structural diagram of the light-shielding cover of the present invention;

[0043] Among them: 1 is a ceramic diaphragm, 2 is an injection molded part, 3 is a light guide, 4 is a light shield, 5 is a light shielding cover, 6 is a light-emitting circuit board, 7 is a lead wire, 8 is an elastic buckle, 31 is a light-transmitting plate, 32 is a light-transmitting cover, 33 is a guide column, and 34 is a limiting protrusion. DETAILED DESCRIPTION

[0044] The present invention will be further described below in conjunction with the accompanying drawings.

[0045] See also Figures 1 to 7 , Specific embodiment 1: A light-emitting panel using an in-film injection molding process, comprising a panel substrate, the panel substrate comprising a ceramic diaphragm 1 and a light-shielding plastic panel 2 integrally connected to the ceramic diaphragm 1, a light-transmitting window being provided on the light-shielding plastic panel 2, and a limiting protrusion 34 partially embedded in the light-transmitting window being provided on the ceramic diaphragm 1; and also comprising a light-emitting component, the light-emitting component comprising a light-shielding cover 4, a light-guiding member 3, a light-shielding cover 5 and a light-emitting circuit board 6, the light-guiding member 3 comprising a light-transmitting plate 31 and an opening facing downward The light-transmitting cover 32 is connected to the top of the light-transmitting cover 32, and the lower end of the light-transmitting cover 32 is open; the light-transmitting plate 31 is partially embedded in the light-transmitting window, and there is a gap between the top surface of the light-transmitting plate 31 and the ceramic diaphragm 1; the top surface of the light-transmitting cover 32 is in close contact with the injection molded part, and the light-transmitting cover 32 and the light-shielding cover 5 are detachably connected to form a cavity for accommodating the light-emitting circuit board 6, and the light-emitting circuit board 6 is equipped with a light-emitting element with the light-emitting direction facing upward; the plastic light-shielding panel and the light-shielding cover 4 form a cavity for accommodating the light-transmitting plate 31. The present invention ensures the connection stability between the membrane material and the light-shielding plastic panel 2 by integrally connecting the light-shielding plastic panel 2 and the ceramic diaphragm 1. The ceramic diaphragm has good high temperature resistance and heat insulation properties and can be widely used in high temperature environments.

[0046] By optimizing the structure of the light-emitting assembly, the light-emitting circuit board 6 can be easily disassembled and assembled independently.

[0047] The light-shielding plastic panel may be a black ABS plastic panel.

[0048] The light guide is made of transparent PC material. There is a gap between the lower side of the light-transmitting plate 31 and the bottom of the groove of the light shield.

[0049] A printed circuit layer is arranged on a side of the ceramic diaphragm away from the light-shielding plastic panel.

[0050] A wire outlet is provided at the connection between the light-transmitting cover 32 and the light-shielding cover. The lead wire 7 connected to the light-emitting circuit board 6 extends outward from the wire outlet. A U-shaped notch is provided on the light-transmitting cover 32 to form the wire outlet. A plug-in is plugged on the lead wire 7, and the plug-in is plugged with an elastic buckle 8.

[0051] The panel substrate is formed by placing a ceramic diaphragm 1 into a cavity of an injection mold, and performing injection molding of a light-shielding plastic panel 2. After molding, the light-shielding plastic panel 2 is integrally connected with the ceramic diaphragm 1. The ceramic diaphragm includes an arc-shaped substrate and a lower extension extending downward from the outer edge of the arc-shaped substrate. The light-shielding plastic panel includes an inner arc-shaped substrate located at the lower side of the arc-shaped substrate, and an inner extension is provided at the outer edge of the inner arc-shaped substrate extending downward, and the inner extension is located on the inner side of the lower extension.

[0052] Mounting posts are arranged on both sides of the light-transmitting window in the length direction; an extension ear extending outward is arranged on the opposite side of the light-shielding cover 4, the extension ear is provided with a mounting hole, and the extension ear is detachably connected to the mounting post by a screw passing through the mounting hole.

[0053] The outer edge of the light-transmitting window is provided with a peripheral edge extending downward; the light-shielding cover 4 includes a bottom plate and a side wall, and a notch for limiting the light-guiding member 3 is provided on the side wall, and the notch includes a top notch portion and a side notch portion that are mutually conductive; the side notch portion is longitudinally plugged with the light-transmitting cover 32; the top notch portion of the light-shielding cover 4 and the light-shielding plastic panel 2 form a long light-guiding gap; the connection between the light-transmitting plate 31 and the light-transmitting cover 32 is located in the light-guiding gap, and a groove for embedding the peripheral edge is provided at the connection between the light-transmitting plate 31 and the light-transmitting cover 32; the side wall is not provided with a top notch portion, and a limiting groove for embedding the peripheral edge is provided. It is convenient to form a light outlet with a long strip output.

[0054] The center of the light-transmitting plate 31 in the longitudinal direction is connected to the light-transmitting cover 32 ; the top surface of the light-transmitting cover 32 is inclined downward from the side adjacent to the light-transmitting plate 31 to the side away from the light-transmitting plate 31 .

[0055] A positioning pin and a connecting buckle are provided on the side of the light-shielding plastic panel 2 away from the ceramic diaphragm 1 .

[0056] The upper surface of the ceramic diaphragm 1 is covered with a printed coating. The light-transmitting plate 31 is provided with a convex dot array matching the contour track of the printed coating.

[0057] A guide column 33 is provided on the light-transmitting cover 32, and a notch that slides longitudinally into and connects to the guide column 33 is provided on the outer edge of the light-emitting circuit board 6; the top of the guide column 33 is a limiting protrusion 34 for supporting the light-emitting circuit board 6; the light-shielding cover 5 is provided with a supporting foot for supporting the lower side of the light-emitting circuit board 6; the light-emitting circuit board 6 is clamped between the limiting protrusion 34 and the supporting foot.

[0058] A method for processing a light-emitting panel using an in-film injection molding process, characterized in that it comprises the following steps:

[0059] Step 1: Ceramic membrane processing;

[0060] Step 2: placing the ceramic film into a molding cavity of an injection mold, and injection molding a panel substrate integrating the ceramic film and the light-shielding plastic panel 2;

[0061] Step 3: the panel base is connected to the light shield 4 to clamp the light guide 3;

[0062] Step 4: The light-emitting circuit board 6 is installed in the light-transmitting cover 32 of the light-guiding member 3, and the light-shielding cover 5 is covered.

[0063] The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A light-emitting panel using an in-film injection molding process, comprising a panel substrate, characterized in that: The panel substrate comprises a ceramic diaphragm and a light-shielding plastic panel integrally connected to the ceramic diaphragm, the light-shielding plastic panel is provided with a light-transmitting window, and the ceramic diaphragm is provided with a limiting protrusion partially embedded in the light-transmitting window; It also includes a light-emitting component, the light-emitting component includes a light shield, a light guide, a light shielding cover and a light-emitting circuit board, the light guide includes a light-transmitting plate and a light-transmitting cover with an opening facing downward, the light-transmitting plate is connected to the top of the light-transmitting cover, and the lower end of the light-transmitting cover is open; A portion of the light-transmitting plate is embedded in the light-transmitting window, and a gap exists between the top surface of the light-transmitting plate and the ceramic diaphragm; The top surface of the light-transmitting cover is in close contact with the injection molded part, and the light-transmitting cover and the light-shielding cover are detachably connected to form a cavity for accommodating the light-emitting circuit board, and the light-emitting circuit board is equipped with a light-emitting element with the light-emitting direction facing upward; The plastic shading panel and the shading cover form a cavity for accommodating the light-transmitting plate.

2. The light-emitting panel of the in-film injection molding process according to claim 1, characterized in that: The panel substrate is formed by placing the ceramic diaphragm into a cavity of an injection mold, and then injection molding the light-shielding plastic panel. After molding, the light-shielding plastic panel is integrally connected with the ceramic diaphragm.

3. The light-emitting panel of the in-film injection molding process according to claim 1, characterized in that: Mounting columns are provided on both sides of the light-transmitting window in the length direction; An extension ear portion extending outward is arranged on the opposite side of the light shield, a mounting hole is opened in the extension ear portion, and the extension ear portion is detachably connected to the mounting column by a screw passing through the mounting hole.

4. The light-emitting panel of the in-film injection molding process according to claim 1, characterized in that: The outer edge of the light-transmitting window is provided with a peripheral edge extending downward; The light shield comprises a bottom plate and a side wall, the side wall is provided with a notch for limiting the position of the light guide member, the notch comprises a top notch portion and a side notch portion which are connected to each other; The side notch portion is longitudinally plugged into the light-transmitting cover; The top notch portion of the light shield and the light shielding plastic panel form a long light-guiding gap; The connection between the light-transmitting plate and the light-transmitting cover is located in the light-guiding gap, and a groove body for embedding the surrounding edge is provided at the connection between the light-transmitting plate and the light-transmitting cover; The side wall where the top notch is not formed is provided with a limiting groove embedded in the surrounding edge.

5. The light-emitting panel of the in-film injection molding process according to claim 5, characterized in that: The center of the light-transmitting plate in the length direction is connected to the light-transmitting cover; The top surface of the light-transmitting cover is tilted downward from the side adjacent to the light-transmitting plate to the side away from the light-transmitting plate.

6. The light-emitting panel of the in-film injection molding process according to claim 1, characterized in that: A positioning pin and a connecting buckle are arranged on one side of the light-shielding plastic panel away from the ceramic diaphragm.

7. The light-emitting panel of the in-film injection molding process according to claim 1, characterized in that: The upper surface of the ceramic diaphragm is covered with a printed coating.

8. The light-emitting panel of the in-film injection molding process according to claim 7, characterized in that: The light-transmitting plate is provided with a convex dot array matching the contour track of the printed coating.

9. The light-emitting panel of the in-film injection molding process according to claim 1, characterized in that: The light-transmitting cover is provided with a guide column, and the outer edge of the light-emitting circuit board is provided with a notch which is longitudinally slid into and connected with the guide column; The top of the guide column is a limiting protrusion used to resist the light-emitting circuit board; The light-shielding cover is provided with supporting feet for supporting the lower side of the light-emitting circuit board; The light-emitting circuit board is sandwiched between the limiting protrusion and the supporting foot.

10. The method for processing a light emitting panel using an in-film injection molding process according to claim 1, characterized in that: The steps include: Step 1: Ceramic membrane processing; Step 2: placing the ceramic film into a molding cavity of an injection mold, and injection molding a panel substrate integrating the ceramic film and the light-shielding plastic panel; Step 3, the panel substrate is connected to the light shield to clamp the light guide; Step 4: The light-emitting circuit board is installed in the light-transmitting cover of the light-guiding member, and then covered with a light-shielding cover.

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