Cladding lamp strip capable of improving lighting effect, cladding material for lamp strip and preparation method of cladding material

Abstract

The invention provides a coated lamp strip capable of improving lighting effect, which comprises a light source strip and a coating adhesive for coating / packaging the light source strip on the outside, the coating adhesive is made of an extrudable organic silicon elastic material, is black or gray at normal temperature, has temperature sensing characteristic, and can change color along with temperature rise, and the coating adhesive can be used for coating / packaging the light source strip on the outside. The color is gradually changed from black to off-white. The color-changeable organic silicon elastic material with the temperature sensing characteristic is adopted as the coating glue and coats the light source strip to form the coating lamp strip, the coating glue for coating the lamp strip is black or gray when the lamp strip is not lightened at the normal temperature, and the coating glue changes color along with temperature rise due to heating after the lamp strip is lightened, so that the color of the light source strip is changed, and the color of the light source strip is changed. The coating rubber is gradually changed from original black or gray to off-white and even transparent, so that the light transmittance of the coating lamp strip is greatly improved, the lighting effect is greatly improved, and after a lamp is turned off, the coating rubber recovers to the beginning along with the reduction of the temperature. The coating lamp strip provided by the invention has a decorative effect when a lamp is turned off, has a linear illumination effect and a decorative illumination effect after the lamp is turned on, and perfectly combines linear illumination and building decoration.

Description

Technical Field

[0001] The present invention relates to the field of LED light strips, and in particular to a coated light strip capable of improving light efficiency, a coating material for the light strip, and a preparation method thereof. Background Art

[0002] The existing general decorative strips are only decorative strips, which cannot emit light and have no lighting effect. The combination of silicone and LED light strips is a new type of lamp, which we call silicone light strips. With the rapid development of the LED market, the demand for silicone flexible light strips used in different LED products is increasing, and it is still growing. The application scenarios of silicone light strips are very broad. At present, they have been widely used in home decoration, store decoration, city lighting, bridge lighting, building lighting, highway warning and other decorative designs. They can also be used as lighting fixtures, suitable for roads, courtyards, stairs, ceilings, cars, ponds, underwater, advertising signs, etc.

[0003] When silicone light strips are used as decorative lighting, they are generally transparent or milky white. The transmittance of transparent silicone light strips can reach more than 90%, and the transmittance of milky white silicone light strips is 64-70%. The light is uniform, and the light color is pure and bright. Due to the low transmittance of black silicone light strips, they are in a very awkward position when used as decorative lighting. Decoration requires black, but the illumination is unsatisfactory.

[0004] In response to the above problems, we have researched and invented a wrapped light strip that can improve the lighting efficiency. Summary of the invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a coated light strip capable of improving light efficiency, a coating material for the light strip, and a preparation method thereof. The technical solution adopted is:

[0006] A coated light strip capable of improving lighting efficiency comprises a light source strip and a coating adhesive that externally coats / encapsulates the light source strip. The coating adhesive is made of an extrudable silicone elastic material, which is black or gray at room temperature and has a temperature-sensitive property. The color can change with increasing temperature, gradually changing from black to off-white.

[0007] A covering material for a light strip, comprising the following raw materials in parts by weight:

[0008] 95-97 parts of silicone composition

[0009] 2 to 5 parts of diffusant;

[0010] Then, based on the total mass fractions above, 1.5-2% of temperature-dependent powder is added.

[0011] According to a covering material for a light strip according to an embodiment of the present invention, the siloxane composition comprises the following raw materials in parts by mass:

[0012]

[0013] According to a covering material for a light strip according to an embodiment of the present invention, the diffusing agent includes the following raw materials in parts by mass:

[0014]

[0015] In a covering material for a light strip according to an embodiment of the present invention, the organic silicon polymer is polydimethylsiloxane.

[0016] In a covering material for a light strip according to an embodiment of the present invention, the diffusion powder is quartz powder.

[0017] In a covering material for a light strip according to an embodiment of the present invention, the structural agent is room temperature vulcanized silicone rubber.

[0018] In a covering material for a light strip according to an embodiment of the present invention, the dispersant is dimethyl silicone oil.

[0019] According to a covering material for a light strip according to an embodiment of the present invention, the temperature-variable powder comprises the following raw materials in parts by mass:

[0020]

[0021] A method for preparing a coated light strip capable of improving light efficiency, the process comprising the following steps:

[0022] Step A, prepare the light source strip;

[0023] Step B, preparing a siloxane composition, a diffusing agent and a temperature-dependent powder, and mixing the coating rubber in a mixer;

[0024] Step C, placing the light source strip into a forming mold on an extruder, starting the extruder and feeding the mixed coating rubber, and extruding the coating rubber film until the coating rubber film evenly wraps the light source strip;

[0025] Step D, starting the vacuum laminating device to completely and tightly adhere the coating film to cover the light source strip;

[0026] Step E: sending the coated light source strip into a constant temperature furnace for curing and forming, wherein the temperature of the constant temperature furnace is 140-180°C.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] The present invention uses a temperature-sensitive color-changing silicone elastic material as a coating adhesive, which is coated on the outside of the light source strip to form a coated light strip. The coating adhesive of the coated light strip is black or gray at room temperature when the light strip is not lit. After the light strip is lit, the heat generated will cause the coating adhesive to change color as the temperature rises, gradually changing from the original black or gray to off-white, or even transparent, which greatly improves the light transmittance of the coated light strip and greatly improves the light efficiency. After the light is turned off, the coating adhesive returns to its original state as the temperature drops. The coated light strip provided by the present invention has a decorative effect when the light is turned off, and plays a linear lighting and decorative lighting role after the light is turned on. The present invention perfectly combines linear lighting and architectural decoration, saves users corresponding costs, and achieves a highly integrated effect in terms of decorative beauty. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0030] Figure 1 This is a light rising curve of the coated light strip sample 1M in the embodiment of the present invention when it is lit. DETAILED DESCRIPTION

[0031] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments.

[0032] A coated light strip capable of improving lighting efficiency comprises a light source strip and a coating adhesive that externally coats / encapsulates the light source strip. The coating adhesive is made of an extrudable silicone elastic material, which is black or gray at room temperature and has a temperature-sensitive property. The color can change with increasing temperature, gradually changing from black to off-white.

[0033] The present invention uses a temperature-sensitive color-changing organic silicone elastic material as a coating adhesive, which is coated on the outside of a light source strip to form a coated light strip. The light source strip can be an LED light strip or an OLED light strip. The coating adhesive of the coated light strip is black or gray at room temperature when the light strip is not lit. The heat generated by the light strip after lighting causes the coating adhesive to change color as the temperature rises, from the initial black or gray to off-white or even transparent, which greatly improves the light transmittance of the coated light strip and greatly improves the light efficiency. After the light is turned off, the coating adhesive returns to its original state as the temperature drops. The coated light strip provided by the present invention is black or gray when the light is turned off, which plays a decorative role. After the light is turned on, the coating adhesive gradually changes color in response to temperature to off-white or transparent to gradually increase the light transmittance. At this time, it plays the role of linear lighting and decorative lighting. The present invention perfectly combines linear lighting and architectural decoration, saves users corresponding costs, and achieves a highly integrated effect in terms of decorative beauty.

[0034] A coating material for a light strip, which is used to prepare the above-mentioned coating adhesive, comprises the following raw materials in parts by weight:

[0035] 95-97 parts of silicone composition

[0036] 2 to 5 parts of diffusant;

[0037] Then, based on the total mass fractions above, 1.5-2% of temperature-dependent powder is added.

[0038] The specific preparation method of the coated light strip includes the following steps:

[0039] Step A: Prepare LED light strips;

[0040] Step B, preparing a siloxane composition, a diffusing agent and a temperature-variable powder (i.e., a coating material), and mixing the coating rubber in a mixer;

[0041] Step C, placing the LED light strip into a forming mold on an extruder, starting the extruder and feeding the mixed coating rubber, extruding the coating rubber film until the coating rubber film evenly wraps the LED light strip;

[0042] Step D, start the vacuum laminating device to completely and tightly attach the coating film to cover the LED light strip;

[0043] Step E: sending the coated LED light strip into a constant temperature furnace for curing and forming, the temperature of the constant temperature furnace is 160° C., and obtaining the coated light strip after constant temperature curing.

[0044] The siloxane composition in the covering material for the light strip includes the following raw materials in parts by weight:

[0045]

[0046] The diffusing agent in the covering material for the light strip includes the following raw materials in parts by mass:

[0047]

[0048]

[0049] Wherein, the organic silicon polymer is polydimethylsiloxane, the diffusion powder is quartz powder, the structural agent is room temperature vulcanized silicone rubber, and the dispersant is dimethyl silicone oil.

[0050] The temperature-variable powder in the coating material for light strips includes the following raw materials by mass:

[0051]

[0052] The color changing temperature of the temperature-changing powder is 35°C, and the thermal decomposition temperature is above 250°C.

[0053] Now, multiple groups of various materials within the above mass fraction range are selected to prepare siloxane compositions, diffusing agents and temperature-variable powders respectively. Then, multiple groups of siloxane compositions, diffusing agents and temperature-variable powders within the mass fraction range of multiple groups of light strip coating materials are selected. According to the specific preparation method of the coated light strips, multiple groups of coated light strips are prepared, which are numbered 1M, 1M1, 1M2, 1M3, 1M4, 1M5, 1M6, 1M7, 1M8 and 1M9 respectively. The above multiple groups of coated light strips are tested, and the test results are as follows:

[0054]

[0055]

[0056] It can be seen from the above that the coated light strip prepared by referring to the coating material for light strip provided by the present invention has good lighting effect, small color tolerance, high color purity, high color rendering index, Ra value above 90, and excellent performance.

[0057] Now the sample 1M is tested for lighting time, and the test results are shown in the table:

[0058]

[0059]

[0060] The light rise curve is as follows Figure 1 ;

[0061] From the above figures and tables, we can clearly see that as the lighting time gets longer, the temperature of the lamp body gets higher, the light transmittance of the coating glue gets higher and higher, and the light efficiency of the coated light strip gets higher and higher. After lighting for 5 minutes, the light efficiency of the coated light strip has reached more than 30, and the coating glue shows excellent light transmittance performance.

[0062] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0063] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A wrapped light strip capable of improving light efficiency, characterized in that: It includes a light source bar and a coating adhesive that externally covers / encapsulates the light source bar. The coating adhesive is made of an extrudable silicone elastic material, which is black or gray at room temperature and has a temperature-sensitive property. It can change color as the temperature rises, gradually changing from black to off-white.

2. A covering material for a light strip, characterized in that: Including the following raw materials by mass: 95-97 parts of silicone composition 2 to 5 parts of diffusant; Then, based on the total mass fractions above, 1.5-2% of temperature-dependent powder is added.

3. The covering material for a light strip according to claim 1, characterized in that: The siloxane composition comprises the following raw materials in parts by weight:

4. The covering material for a light strip according to claim 1, characterized in that: The diffusant comprises the following raw materials in parts by mass:

5. The covering material for a light strip according to claim 4, characterized in that: The organic silicon polymer is polydimethylsiloxane.

6. The covering material for a light strip according to claim 4, characterized in that: The diffusion powder is quartz powder.

7. The covering material for a light strip according to claim 4, characterized in that: The structural agent is room temperature vulcanized silicone rubber.

8. The covering material for a light strip according to claim 4, characterized in that: The dispersant is dimethyl silicone oil.

9. The covering material for a light strip according to claim 1, characterized in that: The temperature-changing powder includes the following raw materials in parts by weight:

10. A method for preparing a coated light strip capable of improving light efficiency, characterized in that: The process includes the following steps: Step A, prepare the light source strip; Step B, preparing a siloxane composition, a diffusing agent and a temperature-variable powder, and mixing the coating rubber in a mixer; Step C, placing the light source strip into a forming mold on an extruder, starting the extruder and feeding the mixed coating rubber, and extruding the coating rubber film until the coating rubber film evenly wraps the light source strip; Step D, starting the vacuum laminating device to completely and tightly adhere the coating film to cover the light source strip; Step E: sending the coated light source strip into a constant temperature furnace for curing and forming, wherein the temperature of the constant temperature furnace is 140-180°C.

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