Automatic color changing protective lamp

Abstract

The utility model discloses an automatic color changing protective lamp which comprises a lamp holder and a light source located in the lamp holder, the spectral wavelength of light emitted by the light source is larger than or equal to 400 nm, and a photochromic piece with photochromic materials is arranged on a light path of the light source. The photochromic material changes color to reduce the light transmittance under the irradiation of light with the spectral wavelength lower than 400 nm, and keeps a high-transmittance state under the irradiation of light with the spectral wavelength larger than or equal to 400 nm. According to the automatic color-changing protective lamp, the photochromic part made of the photochromic material is arranged and allows light rays with the spectral wavelength larger than or equal to 400 nm emitted by the light source to freely pass through, but the light rays with the spectral wavelength smaller than 400 nm in sunlight change color to reduce the light transmittance, so that the light beam energy intensity of the sunlight entering the lamp is reduced, and the light transmittance of the lamp is improved. Therefore, even if the focus of the light beam falls on a component which is not resistant to high temperature in the lamp, the temperature of the component is not increased too much to cause burning damage.

Description

Technical Field

[0001] The utility model relates to the technical field of stage lamps, and more specifically to an automatic color-changing protective lamp. Background Art

[0002] When stage lamps are installed outdoors, they are often exposed to sunlight. Since the light-emitting lens has a focusing effect, it is easy to converge into a high-energy-density light beam inside the stage lamp under the sunlight. If the focus of the light beam falls on the high-temperature-resistant components in the lamp, it is easy to cause damage to the corresponding components.

[0003] The current conventional method is to add a mechanical shading component to the lamp, but this will take up space inside the lamp. The lamp head can also be rotated so that the light-emitting lens faces away from the sun or directly toward the ground, but these require the lamp to be continuously powered or a backup battery to be added, which is not applicable. Utility Model Content

[0004] In order to overcome at least one defect of the above-mentioned prior art, the utility model provides an automatic color-changing protective lamp, which will automatically change color under the irradiation of sunlight, reduce the light transmittance, and reduce the energy intensity of the light beam entering the interior of the lamp.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: an automatic color-changing protective lamp, comprising a lamp head and a light source located in the lamp head, the spectrum wavelength of the light emitted by the light source is greater than or equal to 400nm, and a photochromic component with photochromic material is arranged on the light path of the light source, the photochromic material will change color and reduce the transmittance when exposed to light with a spectrum wavelength lower than 400nm, and maintain a high transmittance state when exposed to light with a spectrum wavelength greater than or equal to 400nm.

[0006] The automatic color-changing protective lamp is provided with a photochromic part having a photochromic material, which allows light with a spectral wavelength greater than or equal to 400nm emitted by the light source to pass freely, but will change color and reduce the transmittance when exposed to light with a spectral wavelength lower than 400nm in sunlight, thereby reducing the energy intensity of the light beam of sunlight entering the interior of the lamp, so that even if the focus of the light beam falls on a high-temperature-resistant component in the lamp, it will not cause its temperature to rise too much, causing it to be burned and damaged.

[0007] Furthermore, the light spectrum wavelength range of the light source is between 400nm and 700nm, which belongs to the conventional visible light wavelength.

[0008] Furthermore, the photochromic material changes color and reduces light transmittance when exposed to light in the spectral wavelength range of 280nm to 390nm, which is in the range of long-wave ultraviolet rays and medium-wave ultraviolet rays.

[0009] Furthermore, the photochromic material is silver halide. When irradiated by light with a spectral wavelength lower than 400nm, silver halide decomposes into many black silver particles and halogen atoms, presenting a light gray or brown color, thereby reducing light transmittance. When there is no irradiation by light with a spectral wavelength lower than 400nm, silver atoms and halogen atoms recombine to form silver halide, and the material becomes transparent again.

[0010] Furthermore, the photochromic material is coated on the surface of the photochromic element. When the photochromic element changes color, only the surface changes color, so that the degree of color change is consistent everywhere, the color change speed is fast, and it is suitable for photochromic elements of various refractive indices.

[0011] Furthermore, the photochromic material is mixed in the photochromic element, is high temperature resistant, scratch resistant, and has low cost, and is mainly suitable for the photochromic element with a refractive index of 1.56 and 1.60.

[0012] Furthermore, the photochromic element is a light-emitting lens of the lamp head, which is directly located at the light inlet and outlet of the lamp head, restricting the sunlight entering the lamp head and completely preventing any position in the lamp head from being irradiated by strong light.

[0013] Furthermore, the light output lens includes a plurality of stacked lenses, and the lens farthest from the light source is the photochromic element. The photochromic element directly faces the sunlight to prevent the medium-wave ultraviolet rays from being blocked by other lenses and being absorbed too much, resulting in poor color change effect of the photochromic material.

[0014] Furthermore, the light-emitting side of a lens of the light-emitting lens farthest from the light source is coated with the photochromic material, that is, the sunlight irradiated to the photochromic element will be completely absorbed by the photochromic material and will not be blocked or absorbed by the lens at all, thereby improving the color change efficiency.

[0015] Furthermore, a CMY component, a cutting component, a rotating pattern plate component, a fixed pattern plate component and / or a color plate component are provided between the light source and the light output lens of the lamp head for intercepting the light beam to generate light effects, respectively realizing the functions of light beam color adjustment, light beam cutting, pattern rotation, specific pattern and light beam dyeing.

[0016] Furthermore, a focusing component and / or an amplifying component is provided between the light source and the light output lens of the lamp holder to respectively realize the adjustment of the light spot clarity and the light spot size. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the exploded structure of the lamp holder of the utility model.

[0018] Figure 2aIt is a structural schematic diagram of the first embodiment of the photochromic element of the utility model.

[0019] Figure 2b It is a structural schematic diagram of the second embodiment of the photochromic element of the utility model.

[0020] Figure 3 It is a schematic cross-sectional structure diagram of the light-emitting lens of the utility model.

[0021] Figure 4 It is a schematic diagram of the overall structure of the automatic color-changing protective lamp of the utility model.

[0022] In the figure:

[0023] 100. Lamp head; 110. Light source; 120. Light output lens; 121. Lens; 130. CMY assembly; 140. Cutting assembly; 150. Rotating pattern disk assembly; 160. Color disk assembly; 170. Focusing assembly; 180. Magnifying assembly; 200. Arm; 300. Chassis; 400. Photochromic component; 410. Photochromic material. DETAILED DESCRIPTION

[0024] The drawings are only for illustrative purposes and cannot be construed as limiting the present invention. To better illustrate the present embodiment, some parts of the drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are only for illustrative purposes and cannot be construed as limiting the present invention.

[0025] like Figure 1 , Figure 2a and Figure 2b The utility model provides an automatic color-changing protective lamp, comprising a lamp holder 100 and a light source 110 located in the lamp holder 100, wherein the spectrum wavelength of the light emitted by the light source 110 is greater than or equal to 400nm, and a photochromic member 400 having a photochromic material 410 is arranged on the optical path of the light source 110, wherein the photochromic material 410 changes color and reduces the transmittance when exposed to light with a spectrum wavelength lower than 400nm, and maintains a high transmittance state when exposed to light with a spectrum wavelength greater than or equal to 400nm.

[0026] The automatic color-changing protective lamp is provided with a photochromic part 400 having a photochromic material 410, which allows the light emitted by the light source 110 with a spectral wavelength greater than or equal to 400nm to pass freely, but will change color and reduce the transmittance when exposed to light with a spectral wavelength lower than 400nm in sunlight, thereby reducing the energy intensity of the beam of sunlight entering the interior of the lamp, so that even if the focus of the light beam falls on a high-temperature-resistant component in the lamp, it will not cause its temperature to rise too much and cause it to be burned and damaged.

[0027] In this embodiment, the photochromic material 410 changes color to less than 60% under the irradiation of light with a spectral wavelength lower than 400nm, preferably within 50%, preferably within 40%, for example, 30% or 20%. The photochromic material 410 maintains a high-transmittance state under the irradiation of light with a spectral wavelength greater than or equal to 400nm, which means that it returns to a transparent state before the color change, and the transmittance is generally above 80%, preferably above 90%, for example, 95%.

[0028] Preferably, the light source 110 is an LED.

[0029] In a preferred embodiment of the present invention, the wavelength range of the light spectrum emitted by the light source 110 is between 400 nm and 700 nm, which is a conventional visible light wavelength.

[0030] The light source 110 can filter out light with a wavelength that is too long or too short through a filter, thereby maintaining the wavelength range of the light spectrum emitted by it within a range of 400 nm to 700 nm.

[0031] In a preferred embodiment of the present invention, the photochromic material 410 changes color and reduces light transmittance when exposed to light in the spectral wavelength range of 280nm to 390nm, which is the range of long-wave ultraviolet rays and medium-wave ultraviolet rays.

[0032] Preferably, the photochromic material 410 changes color and reduces light transmittance when irradiated with light in a spectral wavelength range of 280 nm to 380 nm.

[0033] Common materials that can achieve photochromic properties include organic photochromic compounds, such as spiropyrans, fulgides, diarylethenes, and azobenzenes; and inorganic photochromic compounds, such as transition metal oxides, metal halides, and rare earth complexes.

[0034] In the present invention, the photochromic material 410 is selected to have a high light transmittance (the higher the better) when not discolored, a low light transmittance (the lower the better) after discoloration, a material that will not discolor due to high temperature (within 100°C), and needs to be reusable.

[0035] In a preferred embodiment of the utility model, the photochromic material 410 is silver halide. When irradiated by light with a spectral wavelength lower than 400nm, the silver halide decomposes into many black silver particles and halogen atoms, showing light gray and brown, thereby reducing the light transmittance. When there is no irradiation of light with a spectral wavelength lower than 400nm, the silver atoms and halogen atoms recombine to form silver halide, and become transparent again. In this embodiment, the photochromic material 410 is also doped with a copper oxide catalyst.

[0036] In a preferred embodiment of the present invention, the photochromic material 410 is coated on the surface of the photochromic element 400. When the photochromic element 400 changes color, only the surface changes color, so that the degree of color change is consistent everywhere, the color change speed is fast, and it is suitable for the photochromic element 400 with various refractive indices (such as 1.499, 1.56, 1.60, 1.67, 1.74, etc.).

[0037] like Figure 2a The photochromic material 410 is generally coated on the surface of the photochromic element 400 in the form of a coating. The thickness of the photochromic material 410 can be selected according to the transmittance requirements before and after the photochromic element 400 changes color.

[0038] like Figure 2b In a preferred embodiment of the present invention, the photochromic material 410 is mixed in the photochromic element 400. It is resistant to high temperature, scratch-resistant, and low in cost, and is mainly suitable for the photochromic element 400 with a refractive index of 1.56 and 1.60.

[0039] The photochromic material 410 is mixed with the raw materials of the photochromic element 400 and then sintered to form an integral body. The photochromic material 410 is evenly distributed in the photochromic element 400 and is not easily damaged.

[0040] like Figure 3 In a preferred embodiment of the present invention, the photochromic element 400 is a light output lens 120 of the lamp holder 100. Directly at the light inlet and outlet of the lamp holder 100, the sunlight entering the lamp holder 100 is restricted, and any position in the lamp holder 100 is completely prevented from being irradiated by strong light.

[0041] The light output lens 120 is generally fixed in the lamp head 100 and has a light-collecting function. Optionally, the light output lens 120 can be movably arranged in the lamp head 100 and may not have a light-collecting function.

[0042] In a preferred embodiment of the present invention, the light-emitting lens 120 includes a plurality of stacked lenses 121, and the lens 121 farthest from the light source 110 is the photochromic element 400. The photochromic element 400 directly faces the sunlight to prevent the medium-wave ultraviolet rays from being blocked by other lenses 121 and being absorbed too much, resulting in poor color change effect of the photochromic material 410.

[0043] In a preferred embodiment of the utility model, the light-emitting side of a lens 121 of the light-emitting lens 120 that is farthest from the light source 110 is coated with the photochromic material 410. That is, the sunlight irradiated to the photochromic element 400 will be completely absorbed by the photochromic material 410, and will not be blocked and absorbed by the lens 121 at all, thereby improving the color change efficiency.

[0044] like Figure 1 , Figure 4 In the preferred embodiment of the utility model, a CMY component 130, a cutting component 140, a rotating pattern plate component 150, a fixed pattern plate component and / or a color plate component 160 for intercepting the light beam to generate light effects are also arranged between the light source 110 and the light output lens 120 of the lamp head 100. The functions of light beam color adjustment, light beam cutting, pattern rotation, specific pattern, and light beam dyeing are realized respectively.

[0045] In a preferred embodiment of the present invention, a focusing component 170 and / or an amplifying component 180 are further provided between the light source 110 and the light output lens 120 of the lamp head 100 to respectively realize the adjustment of the light spot clarity and the light spot size.

[0046] In this embodiment, the stage light further includes an arm 200 for supporting the lamp head 100 to rotate and a chassis 300 for supporting the arm 200 to rotate.

[0047] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. An automatic color-changing protective lamp, characterized in that: The invention comprises a lamp holder (100) and a light source (110) located in the lamp holder (100); the light source (110) emits light with a spectral wavelength greater than or equal to 400 nm; a photochromic component (400) having a photochromic material (410) is arranged on the optical path of the light source (110); the photochromic material (410) changes color and reduces light transmittance when exposed to light with a spectral wavelength less than 400 nm, but maintains a high light transmittance state when exposed to light with a spectral wavelength greater than or equal to 400 nm.

2. The automatic color-changing protective lamp according to claim 1, characterized in that: The light source (110) emits light with a spectrum wavelength ranging from 400 nm to 700 nm.

3. The automatic color-changing protective lamp according to claim 1, characterized in that: The photochromic material (410) changes color and reduces light transmittance when exposed to light in a spectral wavelength range of 280 nm to 390 nm.

4. The automatic color-changing protective lamp according to claim 1, characterized in that: The photochromic material (410) is silver halide.

5. The automatic color-changing protective lamp according to claim 1, characterized in that: The photochromic material (410) is coated on the surface of the photochromic element (400).

6. The automatic color-changing protective lamp according to claim 1, characterized in that: The photochromic material (410) is mixed in the photochromic element (400).

7. The automatic color-changing protective lamp according to claim 1, characterized in that: The photochromic component (400) is a light output lens (120) of the lamp holder (100).

8. The automatic color-changing protective lamp according to claim 7, characterized in that: The light output lens (120) comprises a plurality of stacked lenses (121), and the lens (121) farthest from the light source (110) is the photochromic element (400).

9. The automatic color-changing protective lamp according to claim 8, characterized in that: The photochromic material (410) is coated on the light-emitting side of a lens (121) of the light-emitting lens (120) that is farthest from the light source (110).

10. The automatic color-changing protective lamp according to claim 1, characterized in that: A CMY component (130) for intercepting a light beam to generate a light effect, a cutting component (140), a rotating pattern disk component (150), a fixed pattern disk component and / or a color plate component (160) are also provided between the light source (110) and the light output lens (120) of the lamp head (100).

11. The automatic color-changing protective lamp according to claim 1, characterized in that: A focusing component (170) and / or a magnifying component (180) is also provided between the light source (110) and the light output lens (120) of the lamp head (100).

Images