TWI734427B - Method for manufacturing negative film of projection lamp - Google Patents

Abstract

The present invention relates to a method for manufacturing a negative film of a projection lamp. A light source device is provided on one side of a circuit board and a sleeve covering the light source device is assembled with a plurality of lenses and a negative film. The negative film includes the following steps: forming a light-shielding layer with a first color on a substrate; cutting or engraving at least one first hollow portion with a predetermined pattern in the light-shielding layer using a laser engraving device; A first plating layer with a second color is formed on a surface of the substrate; the laser engraving device is used to simultaneously cut or engrave a second hollow part of the preset pattern in the light-shielding layer and the first plating layer, by According to the aforementioned manufacturing method and structure of the negative film, since only one glass sheet or plastic sheet is used as the base material, and at least one plating layer is used to replace another conventional glass sheet or plastic sheet, the structure of the production cost of the negative film can be reduced. At the same time, the projection lamp has a high-quality projection effect.

Description

Method for manufacturing negative film of projection lamp

The present invention provides a method for manufacturing a negative film of a projection lamp, especially a method that uses a glass or plastic sheet as a substrate, and uses at least one plating layer to replace another conventional glass or plastic sheet, so that the production of low-format negatives is possible The cost-effective structure also enables the projection lamp to have a high-quality projection effect.

According to the general vehicle, in order to get on and off the vehicle at night to be able to see the ground conditions more clearly, the door or rearview mirror is installed with a projection lamp (also known as a welcome light or a ground light) that can illuminate below each door. When the door is opened, a preset image is projected on the ground, which produces a bright and dazzling projected image. At the same time, it provides the function of illuminating the ground, so that people getting on and off the vehicle can see the ground under the door without accidentally stepping on the dirt on the ground. , Recesses/protrusions or puddles, so the projection lamp installed in the vehicle has a certain practicality.

The preset image designed for the projection lamp installed in the vehicle is usually formed by projecting a pattern on a transparent glass or plastic sheet by a light source, and the patterned glass or plastic sheet is The film of this projection lamp. In the conventional art, if you want to make a preset image show a colorful pattern effect, you must cut two or more glass or plastic sheets through a laser to form a preset pattern, and then assemble the two in an overlapping structure To perform projection to achieve a predetermined effect. However, the disadvantage of this method of making negatives is that it needs to use more than two glass or plastic sheets. The production of negative film, so the cost of manufacturing projection lamps has also increased. It is not a good practice for low-priced projection lamps. Those who are waiting to be engaged in this industry seek another structure to reduce production costs, and at the same time make projection lamps have High-quality projection effect.

Therefore, in view of the above-mentioned problems and deficiencies, the inventor collected relevant information, and through multiple evaluations and considerations, he designed the invention of the film manufacturing method for this kind of projection lamp.

The main purpose of the present invention is to provide a method for manufacturing a negative film of a projection lamp. The projection lamp is installed on a vehicle as a welcome lamp or a ground lamp. A light source device is provided on one side of a circuit board and covered on the A sleeve of the light source device, the sleeve is assembled with a plurality of lenses and a negative film, and the manufacturing of the negative film includes the following steps: forming a light-shielding layer with a first color on a substrate; using a laser engraving device on the light-shielding At least one first hollow portion with a predetermined pattern is cut or engraved in the layer; a first plating layer with a second color is formed on a surface of the substrate; the laser engraving device is used to simultaneously apply the light-shielding layer and the A second hollow part of the preset pattern is cut or engraved in the first plating layer. With the aforementioned manufacturing method and structure of the negative film, only one glass or plastic sheet is used as the substrate, and at least one plating layer is used instead There is another glass sheet or plastic sheet in the prior art, which can reduce the production cost of the large-scale negative film, and at the same time make the projection lamp have a high-quality projection effect.

The secondary objective of the present invention is to further include a step of forming a second plating layer with a third color on the other surface of the substrate.

Another object of the present invention is to further include a step of simultaneously cutting or engraving a third hollow portion of the predetermined pattern in the substrate, the first plating layer and the second plating layer by using the laser engraving device.

Another object of the present invention is that the lenses in the tube include a first lens, a second lens, and a third lens, and the film is disposed between the first lens and the second lens.

1: circuit board

11: Light source device

2: sleeve

21: The first lens

22: second lens

23: third lens

24: Negative

241: Substrate

2410: The first hollow part

242: shading layer

2420: The second hollow part

243: The first coating

2430: The third hollow part

244: second plating

245: Light side

246: light side

25: Projection port

31: Form a light-shielding layer with the first color on a substrate

32: Use a laser engraving device to cut or engrave at least one first hollow part of a preset pattern in the shading layer

33: Form a first plating layer with a second color on a surface of the substrate

34: Use the laser engraving device to simultaneously cut or engrave a second hollow part of the preset pattern in the light-shielding layer and the first plating layer

41: Form a light-shielding layer with the first color on a substrate

42: Use a laser engraving device to cut or engrave at least one first hollow part of a preset pattern in the shading layer

43: A first plating layer with a second color is formed on a surface of the substrate

44: Use the laser engraving device to simultaneously cut or engrave a second hollow part of the preset pattern in the light-shielding layer and the first plating layer

45: Form a second plating layer with a third color on the other surface of the substrate

46: Use the laser engraving device to cut or engrave a third hollow part of the preset pattern in the second plating layer

L1: First light

L2: second light

L3: third ray

L4: Fourth ray

[Figure 1] is a perspective view of the projection lamp of the present invention.

[Figure 2] is a side sectional view of the structure of the projection lamp of the present invention.

[Figure 3] is the first production structure diagram of the film of the projection lamp of the present invention.

[Figure 4] is a schematic diagram of the first projection of the film of the projection lamp of the present invention.

[Figure 5] is a flow chart of the first manufacturing method of the film of the projection lamp of the present invention.

[Figure 6] is the second production structure diagram of the film of the projection lamp of the present invention.

[Figure 7] is a schematic diagram of the second projection of the film of the projection lamp of the present invention.

[Figure 8] is a flowchart of the second manufacturing method of the film of the projection lamp of the present invention.

In order to achieve the above-mentioned purpose and effect, the technical means and structure adopted by the present invention are illustrated below in detail to illustrate the features and functions of the preferred embodiments of the present invention, so as to fully understand.

Please refer to Figures 1 to 4, which are the three-dimensional appearance view, the side sectional structure view of the projection lamp of the present invention, the first production structure view of the negative film of the projection lamp, and the first projection schematic diagram of the negative film of the projection lamp. It can be clearly seen that the vehicle projection lamp (or welcome lamp or ground lamp) of the present invention includes a circuit board 1 and a sleeve 2. The production and operation of the two are described as follows:

One side of the circuit board 1 is provided with a light source device 11 and covers the light source device 11 Set 11 a tube 2 in which a plurality of lenses are assembled (the lenses include a first lens 21, a second lens 22 and a third lens 23) and a film 24, and the film 24 is provided Between the first lens 21 and the second lens 22, the top surface of the sleeve 2 is further provided with a projection opening 25 for projection of a predetermined pattern, and the light source device 11 is a light emitting diode (LED) Or cold cathode fluorescent lamp (CCFL).

Please refer to FIG. 3 in particular. The substrate 241 of the negative film 24 is composed of a glass sheet or a plastic sheet. A light-shielding layer 242 with a first color is formed on the substrate 241, and the light-shielding layer 242 is cross-sectioned. A first hollow portion 2410 is provided, and a first plating layer 243 with a second color is formed on the surface of the substrate 241 and the light-shielding layer 242, and the substrate 241, the light-shielding layer 242, and the first plating layer 243 are cross-sectioned A second hollow part 2420 is provided.

Please refer to Figure 4 in particular. For example, the color of the substrate 241 is transparent (it can also be other light colors that can transmit light, such as light yellow and light green); One color is black (it can also be other opaque dark colors, such as dark blue, dark gray); the second color of the first plating layer 243 is red, when the light source device 11 that can generate white light is made of the film After the light incident side 245 of 24 irradiates the incident light and the light is emitted from the light exit side 246 of the negative film 24, the color of the first light L1 that only passes through the substrate 241 on the light exit side 246 is white (the primary color of the light source device 11 passes through the transparent color Substrate 241); The color of the second light L2 emitted at only the first hollow portion 2410 and the substrate 241 is red (red first plating layer 243 and transparent substrate 241); only the light-shielding layer 242 is provided The color of the third light L3 emitted from the substrate 241 is black (the black light-shielding layer 242 and the transparent substrate 241), and the first and second light rays on the light-emitting side 246 of the film 24 are , Three light rays (L1, L2, L3) are projected to form the preset pattern. Of course, the light source device 11 irradiates the light, the first and second colors, and the colors of the first, second, and third rays (L1, L2, L3) are based on The preset pattern needs to be adjusted and matched design, and the present invention is not limited to this. Any change in the color of the pattern formed by using a substrate 241 with at least one plating layer is within the scope of this case.

Please refer to FIG. 5, which is a flow chart of the first manufacturing method of the film of the projection lamp of the present invention. According to the structure disclosed in FIGS. 1 to 4, a light source device 11 and a light source device 11 are provided on one side of a circuit board 1. Covered on a sleeve 2 of the light source device 11, a plurality of lenses (21, 22, 23) and a negative film 24 are assembled in the sleeve 2, and the lenses in the sleeve 2 include a first lens 21 , The second lens 22 and the third lens 23, and the film 24 is disposed between the first lens 21 and the second lens 22, and the manufacturing of the film 24 includes the following steps:

Step 31: forming a light-shielding layer with the first color on a substrate, the substrate being composed of a glass sheet or a plastic sheet.

Step 32: Use a laser engraving device to cut or engrave at least one first hollow part of a predetermined pattern in the light-shielding layer.

Step 33: forming a first plating layer with a second color on a surface of the substrate.

Step 34: Use the laser engraving device to simultaneously cut or engrave a second hollow part of the predetermined pattern in the light-shielding layer and the first plating layer.

Please refer to Figures 6 to 7, which are the second production structure diagram of the negative film of the projection lamp of the present invention and the second projection schematic diagram of the negative film of the projection lamp. It can be clearly seen from the figure that the present invention Ming's car projection lamp includes a circuit board 1 and a sleeve 2. The production and operation instructions of the two are as follows:

Please refer to FIG. 6 in particular. The substrate 241 of the negative film 24 is composed of a glass sheet or a plastic sheet. A light-shielding layer 242 with a first color is formed on the substrate 241, and the light-shielding layer 242 is cross-sectioned. A first hollow portion 2410 is provided, and a first plating layer 243 with a second color is formed on the surface of the substrate 241 and the light-shielding layer 242, and the substrate 241, the light-shielding layer 242, and the first plating layer 243 are cross-sectioned A second hollow portion 2420 is provided, and a second plating layer 244 with a third color is formed on the other surface of the substrate 241, and a third hollow portion 2430 is formed in the second plating layer 244.

Please refer to FIG. 7 in particular. For example, the color of the substrate 241 is transparent; the first color of the light-shielding layer 242 is black; the second color of the first plating layer 243 is red; The third color of the second plating layer 244 is green. When the light source device 11 that can generate white light is irradiated with light from the light-incident side 245 of the film 24 and light is emitted from the light-emitting side 246 of the film 24, the light is emitted The color of the first light L1 on the side 246 that only passes through the substrate 241 is white (the primary color of the light source device 11 passes through the transparent substrate 241); the second light is emitted where only the first hollow portion 2410 and the substrate 241 are provided The color of L2 is red (the first plating layer 243 of red and the base material 241 of transparent color); the third light L3 that emits light at only the second hollow portion 2420 and the base material 241 is green (the second plating layer 244 of green) And a transparent substrate 241); when only the light shielding layer 242 and the fourth light L4 emitted from the substrate 241 are provided, the color is black (the black light shielding layer 242 and the transparent substrate 241), and the substrate 24 is The first, second, third, and fourth light rays (L1, L2, L3, L4) on the light exit side 246 are projected to form the preset pattern, of course The colors of the incident light, the first, second, and third colors and the first, second, third, and fourth rays (L1, L2, L3, L4) irradiated by the light source device 11 are adjusted and matched according to the needs of the preset pattern. The present invention does not In this way, the color change of the pattern formed by using a substrate 241 with at least one plating layer is within the scope of this case.

Please refer to Fig. 8, which is a flowchart of the second manufacturing method of the film of the projection lamp of the present invention. According to the structure disclosed in Figs. 6-7, the manufacturing of the film 24 includes the following steps:

Step 41: forming a light-shielding layer with the first color on a substrate, the substrate being composed of a glass sheet or a plastic sheet.

Step 42: Use a laser engraving device to cut or engrave at least one first hollow part of a predetermined pattern in the light-shielding layer.

Step 43: forming a first plating layer with a second color on a surface of the substrate.

Step 44: Use the laser engraving device to simultaneously cut or engrave a second hollow part of the predetermined pattern in the light-shielding layer and the first plating layer.

Step 45: forming a second plating layer with a third color on the other surface of the substrate.

Step 46: Use the laser engraving device to cut or engrave a third hollow part of the predetermined pattern in the second plating layer.

The main object protected by the present invention is to use a surface of a substrate 241 to produce a pattern formed by the color change of a plating layer. The basic implementation configuration is the first embodiment disclosed in FIGS. 3 to 5. However, it is hoped that coatings will be made on both surfaces of the substrate 241. This change is implemented in the structure The shape is like the second embodiment disclosed in Figs. 6 to 8. The second embodiment enables the negative film 24 to present more diversified colors, and the projected preset patterns can be more attractive to consumers.

According to the disclosures in Figures 1 to 8 above, it can be understood that the present invention is a method for manufacturing a negative film of a projection lamp. The projection lamp is installed on a vehicle as a welcome lamp or a ground lamp, which is mainly connected to one of a circuit board. A light source device and a sleeve covering the light source device are arranged on the side. The sleeve is assembled with a plurality of lenses and a film. The manufacturing of the film includes the following steps: forming a light-shielding layer with a first color on a substrate Use a laser engraving device to cut or engrave at least one first hollow portion of a preset pattern in the shading layer; form a first plating layer with a second color on a surface of the substrate; use the mine The projection engraving device simultaneously cuts or engraves a second hollow part of the preset pattern in the light-shielding layer and the first plating layer. With the aforementioned manufacturing method and structure of the negative film, only one glass sheet or plastic sheet is used to make It is a base material, and uses at least one coating to replace another conventional glass or plastic sheet, so that the production cost of the negative film can be reduced, and the projection lamp has a high-quality projection effect.

The above are only the preferred embodiments of the present invention, and are not limited to the scope of the patent of the present invention. Therefore, all simple modifications and equivalent structural changes made by using the description and drawings of the present invention should be included in the present invention in the same way. Within the scope of the patent, it is agreed to Chen Ming.

In summary, the method for manufacturing the negative film of the above-mentioned projection lamp of the present invention can indeed achieve its effects and purposes when used. Therefore, the present invention is truly an invention with excellent practicability. For the application, I hope that the review committee will grant this case as soon as possible to protect the inventor’s hard work. If the review committee of the Bureau has any doubts, please feel free to write instructions. The inventor will do his best to cooperate.

41: Form a light-shielding layer with the first color on a substrate

42: Use a laser engraving device to cut or engrave at least one first hollow part of a preset pattern in the shading layer

43: A first plating layer with a second color is formed on a surface of the substrate

44: Use the laser engraving device to simultaneously cut or engrave a second hollow part of the preset pattern in the light-shielding layer and the first plating layer

45: Form a second plating layer with a third color on the other surface of the substrate

46: Use the laser engraving device to cut or engrave a third hollow part of the preset pattern in the second plating layer

Claims (7)

A method for manufacturing a negative film of a projection lamp is to provide a light source device on one side of a circuit board and a sleeve covering the light source device. The sleeve is assembled with a plurality of lenses and a negative film. The manufacturing of the negative film includes the following step: (a) forming a light-shielding layer with the first color on a substrate; (b) Using a laser engraving device to cut or engrave at least one first hollow part of a predetermined pattern in the light-shielding layer; (c) forming a first plating layer having a second color on a surface of the substrate; and (d) Using the laser engraving device to simultaneously cut or engrave a second hollow part of the predetermined pattern in the light-shielding layer and the first plating layer. The method for manufacturing a negative film for a projection lamp of claim 1, which further includes step (e) forming a second plating layer with a third color on the other surface of the substrate. For example, the method for manufacturing a negative film of a projection lamp of claim 1, which further includes the step (f) using the laser engraving device to cut or engrave a third hollow part of the predetermined pattern in the second plating layer. According to the method for manufacturing a negative film of a projection lamp of claim 1, wherein the substrate is composed of a glass sheet or a plastic sheet. The method for manufacturing a negative film of a projection lamp of claim 1, wherein the color of the substrate is transparent; the first color of the light-shielding layer is black; the second color of the first plating layer is red; the second plating layer The third color is green. When the light source device that can generate white light irradiates light from the light-incident side of the film and emits light from the light-emitting side of the film, only the first light color that passes through the substrate on the light-emitting side Is white; only the first hollow part and The color of the second light emitted from the substrate is red; the color of the third light emitted from where only the second hollow portion and the substrate are provided is green; the color of the fourth light emitted from only the light-shielding layer and the substrate is It is black, and the preset pattern is formed by projecting the first, second, third, and fourth rays of light on the light-emitting side of the negative film. The method for manufacturing a film for a projection lamp of claim 1, wherein the lenses in the tube include a first lens, a second lens, and a third lens, and the film is disposed on the first lens and the second lens Between the lenses. According to claim 1, the method for manufacturing a negative film of a projection lamp, wherein the light source device is composed of a light emitting diode or a cold cathode fluorescent tube.

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