CN117108959A - Lighting device - Google Patents

Abstract

The disclosure relates to the technical field of illumination and provides an illumination device. The lighting device comprises a shell, a light source and a scattering mirror, wherein the light source is arranged on the shell and used for emitting lighting rays; the scattering mirror is arranged on a transmission light path of the illumination light and provided with a first surface and a second surface which are oppositely arranged, a coating layer is arranged on the first surface, the coating layer is configured to have a transmittance for the light of a first preset wave band larger than that of the light of other wave bands, when the light source is started, the illumination light enters the first surface and is filtered out to form a first preset light color through the coating layer, and the first preset light color is emitted outwards through the second surface. The utility model provides a lighting device through set up the coating film layer on the speculum for the coating film layer filters out first presupposed photochromic, thereby makes lighting device can simulate the state of sky, simple structure, the production degree of difficulty is low, and illumination stability is higher.

Description

Lighting device

Technical Field

The disclosure relates to the technical field of illumination, in particular to an illumination device.

Background

With the improvement of society and the improvement of life quality, the requirements of lighting devices are increasing. In this large environment, a new lamp is appeared in the field of household or commercial lighting, and a sky lamp capable of simulating a sky illumination state is also called a blue sky lamp or a sky lamp. The lamp simulating the sky mainly shows the visual effect of being capable of simulating the sky.

In the related art, in order to better simulate sky visual effect, the light source needs to be obliquely irradiated, after the light is diffused by the lens, the light is projected into the light-transmitting plate manufactured by adopting the Rayleigh scattering effect at a certain angle, and the sky visual effect is simulated through the scattering reaction.

Disclosure of Invention

In order to solve the above technical problems or at least partially solve the above technical problems, the present disclosure provides a lighting device.

The present disclosure provides a lighting device comprising:

a housing;

the light source is arranged in the shell and used for emitting illumination light;

the scattering mirror is arranged on the transmission light path of the illumination light and is provided with a first surface and a second surface which are oppositely arranged, the first surface is close to the light source, and the second surface is far away from the light source;

the first surface is provided with a coating layer, the coating layer is configured to have a transmittance for light rays of a first preset wave band larger than that of light rays of other wave bands, when the light source is started, the illumination light rays are incident on the first surface and filtered out a first preset light color through the coating layer, and the first preset light color is emitted outwards through the second surface.

The lighting device provided by the disclosure comprises a shell, a light source and a scattering mirror. The light source is arranged in the shell and used for emitting illumination light; the scattering mirror is arranged on a transmission light path of the illumination light and is provided with a first surface and a second surface which are oppositely arranged, the first surface is close to the light source, the second surface is far away from the light source, and the illumination light emitted by the light source is incident to the first surface and is emitted outwards through the second surface. In particular, when the light source is turned on, illumination light enters the first surface and is filtered out by the coating layer to obtain a first preset light color, and the first preset light color is emitted outwards by the second surface. That is, the transmittance of the coating layer is suddenly increased in the first preset waveband, the trend in other wavebands is gentle, compared with the light in other wavebands, the light in the first preset waveband which can penetrate through the coating layer is more than the light in other wavebands which penetrate through the coating layer, so that the outside of the lighting device is enabled to present the color corresponding to the light in the first preset waveband when the light source is started, namely, the first preset light color is filtered out through the coating layer, the first preset light color is outwards emitted through the second surface, finally the outside of the lighting device is enabled to present the first preset light color, and particularly, the first preset light color can be the light color capable of simulating the sky state, therefore, the lighting device can simulate the sky state, compared with the existing lighting device manufactured by adopting the Rayleigh scattering effect, the light source is not required to be obliquely irradiated, namely, the light source is only required to be ensured to be positioned on the transmission light path of the lighting light emitted by the light source, the lighting device can be filtered out the preset light through the coating layer arranged on the scattering mirror, the lighting device is enabled to have simple structure, the production stability is lower, and the lighting stability is higher.

In some embodiments, the coating layer is further configured to have a reflectivity for light in a second preset wavelength band greater than that of light in other wavelength bands, and when the light source is turned off, external light enters the first surface and forms a second preset light color after being reflected and cut off by the coating layer, and the second preset light color exits outwards through the second surface;

the first preset wave band and the second preset wave band are staggered.

In some embodiments, the first predetermined wavelength band is 390nm to 520nm and the second predetermined wavelength band is 550nm to 720nm;

or the first preset wave band is 540nm to 720nm, and the second preset wave band is 400nm to 510nm;

or the first preset wave band is 420nm to 510nm, and the second preset wave band is 480nm to 580nm;

alternatively, the first preset wave band is 560nm to 630nm, and the second preset wave band is 400nm to 520nm.

In some embodiments, a side of the coating layer away from the light source is formed as a smooth surface so that the diffusing mirror exhibits a specular visual effect in the light source off state.

In some embodiments, the housing includes a shell formed as an open-ended housing structure and a mount secured at the opening of the shell;

the light source is arranged at the bottom of the inner side of the shell, the scattering mirror is arranged on the fixing frame, and the light source emits irradiation light to the scattering mirror in a direct type backlight mode.

In some embodiments, the lighting device further comprises a light-emitting plate, wherein the light-emitting plate is arranged on one side of the scattering mirror facing the light source and is parallel to the scattering mirror;

the light emitting plate is provided with a third surface and a fourth surface which are oppositely arranged, the third surface faces away from the scattering mirror, the fourth surface faces towards the scattering mirror, part of illumination light emitted by the light source is incident to the third surface and exits through the fourth surface, part of illumination light emitted by the light source is reflected to the inner side wall of the shell through the third surface and is incident to the third surface again after being reflected and/or scattered by the inner side wall of the shell.

In some embodiments, a scattering groove is disposed on an inner side wall of the housing, the scattering groove is in a step shape, and a portion of the illumination light emitted by the light source is reflected by the third surface to the scattering groove, and is scattered by the scattering groove and then is incident on the third surface again at a plurality of angles.

In some embodiments, the lighting device further comprises a light path adjusting component, wherein the light path adjusting component comprises a Fresnel lens covered at the light source, and the light path adjusting component is used for expanding the light emergent angle of the light source and dispersing the irradiation light rays emitted by the light source.

In some embodiments, the housing includes a back plate and a mount disposed at a periphery of the back plate, the diffuser disposed on the mount and disposed parallel to the back plate;

the back plate and the scattering mirror are sequentially provided with a reflecting plate and a light guide device, the light source is arranged on the side part of the light guide device, the light source emits illumination light to the scattering mirror in a side-in backlight mode, and the illumination light is reflected by the light guide device and the reflecting plate and then emitted towards the scattering mirror.

In some embodiments, the light guide device has a fifth surface and a sixth surface disposed opposite each other, the fifth surface disposed opposite the diffuser, the sixth surface disposed toward the diffuser;

part of the illumination light emitted by the light source is incident to the fifth surface through the side part of the light guide device and is emitted through the sixth surface after being reflected by the fifth surface, and part of the illumination light emitted by the light source is incident to the sixth surface through the side part of the light guide device and is emitted through the sixth surface after being reflected by the sixth surface to the reflecting plate, and is emitted through the sixth surface after being reflected by the reflecting plate.

In some embodiments, the lighting device further comprises a light-emitting plate, wherein the light-emitting plate is arranged on one side of the scattering mirror facing the light guide device and is parallel to the scattering mirror;

the light emitting plate is provided with a third surface and a fourth surface which are oppositely arranged, the third surface faces away from the scattering mirror, the fourth surface faces towards the scattering mirror, and the illumination light emitted by the light source is incident to the third surface and emitted through the fourth surface after being reflected by the light guide device and the reflecting plate.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.

In order to more clearly illustrate the embodiments of the present disclosure or the solutions in the prior art, the drawings that are required for the description of the embodiments or the prior art will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.

FIG. 1 is a schematic diagram of an illumination device according to an embodiment of the invention;

FIG. 2 is a cross-sectional view of an illumination device according to an embodiment of the present invention;

FIG. 3 is a schematic view of a scattering groove according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of an illumination light propagation path according to an embodiment of the present invention;

FIG. 5 is a schematic view of a scattering mirror according to an embodiment of the invention;

FIG. 6 is a schematic diagram of a light-emitting panel according to an embodiment of the invention;

FIG. 7 is a schematic diagram of a lighting device according to another embodiment of the present invention;

FIG. 8 is a cross-sectional view of a lighting device according to another embodiment of the present invention;

FIG. 9 is a diagram showing the scattering mirror parameter fluctuation of the blue sky effect according to an embodiment of the present invention;

FIG. 10 is a graph of scattering mirror parameter fluctuations of the effect of the evening primrose of an embodiment of the present invention;

FIG. 11 is a graph of scattering mirror parameter fluctuations of sky cyan effect according to an embodiment of the present invention;

FIG. 12 is a graph showing the scattering mirror parameter fluctuation of the sunset effect according to an embodiment of the present invention.

In the figure: 1. a housing; 11. a housing; 111. a scattering groove; 12. a fixing frame; 13. a back plate; 14. a light guide device; 141. a fifth surface; 142. a sixth surface; 15. a reflection plate; 2. a light source; 3. a scattering mirror; 31. a first surface; 32. a second surface; 33. a coating layer; 4. a light-emitting plate; 41. a third surface; 42. a fourth surface; 5. an optical path adjusting member; 6. and a power supply.

Detailed Description

In order that the above objects, features and advantages of the present disclosure may be more clearly understood, a further description of aspects of the present disclosure will be provided below. It should be noted that, without conflict, the embodiments of the present disclosure and features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced otherwise than as described herein; it will be apparent that the embodiments in the specification are only some, but not all, embodiments of the disclosure.

The lighting device is described in detail below by way of specific examples:

referring to fig. 1 to 12, some embodiments of the present invention provide a lighting device including a housing 1, a light source 2, and a diffusion mirror 3.

Wherein, the light source 2 is arranged in the shell 1 and used for emitting illumination light; the scattering mirror 3 is disposed on a transmission light path of the illumination light, and has a first surface 31 and a second surface 32 disposed opposite to each other, the first surface 31 is disposed close to the light source 2, the second surface 32 is disposed far away from the light source 2, and the illumination light emitted from the light source 2 is incident on the first surface 31 and is emitted outwards through the second surface 32.

In particular, when the light source 2 is turned on, the illumination light enters the first surface 31 and is filtered out by the coating layer 33, and the first preset light color is emitted outwards by the second surface 32.

That is, the transmittance of the coating layer 33 is suddenly increased in the first preset wavelength band, compared with the light rays of other wavelength bands, the light rays of the first preset wavelength band which can penetrate through the coating layer 33 are more than the light rays of the other wavelength bands which penetrate through the coating layer 33, so that the exterior of the lighting device presents the color corresponding to the light rays of the first preset wavelength band, that is, the first preset light color is filtered out through the coating layer 33, and is emitted outwards through the second surface 32, and finally the exterior of the lighting device presents the first preset light color when the light source 2 is started, specifically, the first preset light color can be the light color which can simulate the sky state, thereby enabling the lighting device to simulate the sky state.

Illustratively, the transmittance of the coating layer 33 for light in the 390nm-520nm wavelength band is set to be larger than that of the other wavelength bands, that is, the transmittance of the coating layer 33 is set to be suddenly increased in the 390nm-520nm wavelength band, and the trend of the other wavelength bands is gentle. When the illumination light emitted from the light source 2 is white light, the transmittance of the coating layer 33 to 390nm-520nm wave band is increased sharply when the white light passes through, the transmittance of blue light is increased, and the white light is emitted through the coating layer 33 to show the effect of blue sky, namely, blue and cyan, and the corresponding color spectrum is green, blue and purple. The lighting device using the coating layer 33 is blue-blue in a state where the light source 2 is lighted, that is, sky blue, so that the lighting device can simulate a sky state.

Of course, the transmittance of the coating layer 33 for other preset wavelength bands may be increased suddenly as required, so as to correspond to other hues of the color spectrum, so that the lighting device can simulate sky states of other colors, such as sunset irradiation, and the like.

It should be noted that, in the lighting device provided in the embodiment of the present disclosure, the scattering mirror 3 adopts the principle of electroplating chemical color, and the transmittance of a special band is suddenly increased, so that white light emitted by the light source 2 can be changed into sky blue or other preset light colors, thereby simulating the sky state. The present disclosure is not particularly limited as to the specific plating method of the plating layer 33, as long as the above-described functional effects can be achieved.

According to the lighting device provided by the embodiment of the disclosure, the diffusion mirror 3 adopting the electroplating chemical color principle is adopted, namely, the film coating layer 33 is arranged on the diffusion mirror body, and the transmittance of the film coating layer 33 to the light rays of the preset wave band is larger than that of the light rays of other wave bands, so that the lighting device can simulate the sky state in the starting state of the light source 2, compared with the existing lighting device manufactured by adopting the Rayleigh scattering effect, the light source 2 does not need to be obliquely irradiated, only the light source 2 is required to be ensured to be irradiated onto the diffusion mirror 3, namely, only the diffusion mirror 3 is required to be ensured to be positioned on the transmission light path of the illumination light rays emitted by the light source 2, and the preset color light rays can be filtered out through the film coating layer 33 arranged on the diffusion mirror 3, so that the lighting device is simple in structure, lower in production difficulty and higher in lighting stability.

Further, the coating layer 33 is further configured to have a reflectivity for the light of the second preset wavelength band greater than that of the light of the other wavelength bands, and when the light source 2 is turned off, the external light enters the first surface 31 and forms a second preset light color after being reflected by the coating layer 33 and cut off, and the second preset light color is emitted outwards through the second surface 32.

That is, the reflectance of the coating layer 33 is set to be suddenly increased in the second preset band and to be gentle in the remaining bands. Compared with the light rays of other wavebands, the light rays of the second preset wavebands reflected by the coating layer 33 are more than the light rays of the other wavebands reflected by the coating layer 33, so that the exterior of the lighting device presents the color corresponding to the light rays of the second preset wavebands when the light source 2 is not started, namely the second preset light color reflected by the coating layer 33, specifically, the second preset light color can be the light color capable of simulating the sky state, and therefore, the lighting device can also simulate the sky state when the light source 2 is not started.

Illustratively, the reflectivity of the coating layer 33 for light rays in the 550nm-720nm wave band is set to be larger than that of light rays in other wave bands, that is, the reflectivity of the coating layer 33 is set to be suddenly increased in the 550nm-720nm wave band, and the trend of the other wave bands is gentle. In the non-light-emitting state of the light source 2, the external light is golden yellow after being reflected by the coating layer 33, and the corresponding color spectrum is red, orange and yellow, and in this state, when the external light irradiates the inside of the lighting device through the scattering mirror 3, the light is reflected by the scattering mirror 3 to be cut off. The lighting device using the coating layer 33 is golden yellow in a state where the light source 2 is not lighted, so that the lighting device can simulate a sky state when the light source 2 is not turned on.

It should be noted that the first preset wave band and the second preset wave band are staggered, so that the first preset light color and the second preset light color are different in color. That is, all or part of the bands other than the first preset band are set to the second preset band, so that the light of the first preset band is filtered out by the coating layer 33, and the light of the second preset band is reflected, so that different color effects are respectively presented when the light source 2 is turned on and when the light source 2 is turned off.

Specifically, the coating layer 33 may set different first preset wave bands according to needs, so that the coating layer 33 filters out different first preset light colors, and the lighting device can simulate different sky states when the light source 2 is turned on; correspondingly, the coating layer 33 can also set different second preset wavebands according to needs, so that the coating layer 33 can reflect different second preset light colors, and therefore, the lighting device can display different light colors when the light source 2 is not started, and the light colors displayed when the light source 2 is not started are different from the light colors when the light source 2 is started, so that different sky states are simulated.

In some embodiments, referring to fig. 9, wherein the abscissa is wavelength (nm), the ordinate is percent (%), the reflectance is curve x, the transmittance is curve y, the first predetermined wavelength band is 390nm to 520nm, and the second predetermined wavelength band is 550nm to 720nm. That is, the coating layer 33 is designed such that the transmittance of light in the 390-520nm band is abruptly increased and the transmittance in the remaining bands is relatively gentle. Specifically, when the white light passes through, the transmittance of the light in the 390-520nm wave band is increased, and the transmittance of the corresponding blue light is increased, so as to show the irradiation effect of the blue sky, and finally the outside of the lighting device shows cyan and blue, and the corresponding color spectrum shows green, cyan and blue and purple phases. Meanwhile, the coating layer 33 is designed to have a sudden increase in reflectivity of light rays in the 550-720nm wavelength band, and when the light source 2 is turned off, the exterior of the lighting device appears to be golden yellow, and the corresponding color spectrum appears to be red orange yellow.

In other embodiments, referring to fig. 10, where the abscissa is wavelength (nm), the ordinate is percent (%), the reflectance is curve x, the transmittance is curve y, the first predetermined wavelength band is 540nm to 720nm, and the second predetermined wavelength band is 400nm to 510nm. That is, the coating layer 33 is designed such that the transmittance of light in the 540-720nm band is suddenly increased and the transmittance in the remaining bands is relatively gentle. Specifically, the illumination light is white light, and when the white light passes through, the transmittance of the light in the wave band of 540-720nm is increased rapidly, so that the transmittance of corresponding red light is increased, the effect of evening radiation is shown, and the corresponding color spectrum shows a red-orange-yellow color phase. Meanwhile, the coating layer 33 is designed such that the reflectance of light in the 400-510nm wavelength band is suddenly increased, and the outside of the lighting device assumes a bluish color when the light source 2 is turned off.

In other embodiments, referring to fig. 11, where the abscissa is wavelength (nm), the ordinate is percent (%), the reflectance is curve x, the transmittance is curve y, the first predetermined wavelength band is 420nm to 510nm, and the second predetermined wavelength band is 480nm to 580nm. That is, the coating layer 33 is designed such that the transmittance of light in the 420-510nm band is suddenly increased and the transmittance in the remaining bands is relatively gentle. Specifically, when white light passes through, the transmittance of the light in the wave band of 420-510nm is increased sharply, and the transmittance of the corresponding cyan light is increased, so as to show the sky cyan irradiation effect, and the corresponding color spectrum shows the blue cyan phase. Meanwhile, the coating layer 33 is designed to have an abrupt increase in reflectance of light in the 480-580nm wavelength band, and the outside of the lighting device exhibits a green-blue color when the light source 2 is turned off.

In other embodiments, referring to fig. 12, where the abscissa is wavelength (nm), the ordinate is percent (%), the reflectance is curve x, the transmittance is curve y, the first predetermined wavelength band is 560nm to 630nm, and the second predetermined wavelength band is 400nm to 520nm. That is, the coating layer 33 is designed such that the transmittance of light in the 560-630nm band is suddenly increased and the transmittance in the remaining bands is relatively gentle. Specifically, when white light passes through, the transmittance of the light in the 560-630nm wave band is increased sharply, and the transmittance of the corresponding red orange yellow light is increased, so as to show the effect of light irradiation of the sunset, and the corresponding color spectrum shows the red orange yellow color phase. Meanwhile, the coating layer 33 is designed to have a sudden increase in reflectance of light in the 400-520nm wavelength band, and the outside of the lighting device exhibits a bluish violet color when the light source 2 is turned off.

It should be noted that, the ranges of the first preset band and the second preset band are not limited to the above ranges, and may be specifically set according to actual requirements, which is not limited in the present disclosure, so long as different sky states can be simulated. Meanwhile, the range of the first preset wave band and the range of the second preset wave band can be designed into specific range values according to the color temperature of the light source 2, so that the scattering mirror 3 is correspondingly designed into a certain transmittance and a certain reflectivity.

In some embodiments, the side of the coating layer 33 remote from the light source 2 is formed as a smooth surface so that the diffusing mirror 3 exhibits a specular visual effect in the off state of the light source 2. When the light source 2 is turned off, the external light passes through the diffusion mirror 3, and when the light irradiates the inside of the lighting device, most of the light is reflected by the diffusion mirror 3 and cut off, so that the outside of the lighting device is in a mirror state. Referring to fig. 5, light e from the outside is incident on a side of the coating layer 33 away from the light source 2, and is reflected by the coating layer 33 to be emitted outwards to show a mirror effect on the side of the coating layer 33 away from the light source 2. Specifically, the lighting device is powered by a power supply 6.

Specifically, with continued reference to fig. 5, the diffusing mirror 3 includes a diffusing mirror body and a coating layer 33 disposed on the diffusing mirror body, the coating layer 33 is formed as a first surface 31 of the diffusing mirror 3, and the illumination light emitted by the light source 2 is filtered out by the diffusing mirror 3 to obtain a first preset light color. The material of the scattering mirror body is preferably toughened glass, and of course, engineering plastics such as PMMA, PC, PS, PET and the like can be used, so long as the light can be emitted. Specifically, the plating layer 33 is formed by plating a plurality of times on the scattering mirror body, and the plating principle may employ the plating chemical color principle.

In some embodiments, referring to fig. 1 and 2, the housing 1 includes a housing 11 and a fixing frame 12, the housing 11 is formed into a housing 1 structure with one end opened, the fixing frame 12 is fixed at the opening of the housing 11, the light source 2 is disposed at the bottom of the inner side of the housing 11, the scattering mirror 3 is disposed on the fixing frame 12, and the light source 2 emits irradiation light to the scattering mirror 3 in a direct type backlight manner. The illumination light emitted by the light source 2 is emitted from the inner bottom of the shell 11 to the scattering mirror 3, and the illumination light is filtered out by the scattering mirror 3 to obtain a first preset light color, and the first preset light color is emitted outwards through an open structure on the shell 11, so that the illumination device presents the first preset light color.

In particular, referring to fig. 4, the lighting device further includes a light emitting plate 4, where the light emitting plate 4 is disposed on a side of the scattering mirror 3 facing the light source 2 and is parallel to the scattering mirror 3, and the illumination light emitted by the light source 2 is incident on the light emitting plate 4 and exits to the scattering mirror 3 through the light emitting plate 4, and finally, a first preset light color is emitted through the scattering mirror 3. Specifically, the light-emitting plate 4 has a certain preset transmittance, and has a certain diffusion effect on the illuminating light, so as to perform soft light treatment on the light.

Referring to fig. 6, the light-emitting plate 4 has a third surface 41 and a fourth surface 42 disposed opposite to each other, the third surface 41 is disposed opposite to the scattering mirror 3, the fourth surface 42 is disposed toward the scattering mirror 3, a portion of the illumination light emitted from the light source 2 is incident on the third surface 41 and exits through the fourth surface 42, and a portion of the illumination light emitted from the light source 2 is reflected by the third surface 41 onto the inner side wall of the housing 11 and is reflected and/or scattered by the inner side wall of the housing 11 and then is incident again on the third surface 41. After the illumination light rays are reflected and refracted for many times in the shell 11, the illumination light rays can be uniformly incident on the third surface 41 of the light emitting plate 4, and uniform light rays are provided for the scattering mirror 3, so that the problem of uneven illumination of the illumination device is avoided, and the illumination effect is ensured.

Specifically, a scattering groove 111 is provided on an inner side wall of the housing 11, the scattering groove 111 is stepped, and part of the illumination light emitted from the light source 2 is reflected onto the scattering groove 111 through the third surface 41, and is scattered by the scattering groove 111 and then is incident again on the third surface 41 at a plurality of angles. Referring to fig. 4, an illumination light ray a emitted from a light source 2 is incident on a third surface 41 at a certain angle, the light ray is divided into two paths, one part of light ray d directly exits through a fourth surface 42, the other part of light ray b is reflected onto a scattering groove 111 and is scattered by the scattering groove 111 to form a light ray c, and the light ray b is scattered to form a plurality of light rays c with different angles due to the step-like shape of the scattering groove 111, and after the light ray c is incident on the third surface 41, the light ray c still can exit through the fourth surface 42 or be reflected back into the housing 11 by the third surface 41 to be reflected and scattered again. It will be appreciated that by multiple scattering and reflection, the illumination light is uniformly incident on the third surface 41 and filtered out the first predetermined light color by the scattering mirror 3, thereby providing a more uniform illumination light color. It should be noted that, the light b may also be incident on the inner bottom of the housing 11 and reflected to the third surface 41 through the inner bottom, so as to achieve the purpose of uniform light color.

In some embodiments, the lighting device further comprises a light path adjusting member 5, the light path adjusting member 5 comprising a fresnel lens covered at the light source 2, the light path adjusting member 5 being configured to expand the light exit angle of the light source 2 and disperse the irradiation light emitted from the light source 2. The optical path adjusting member 5 is not limited to a fresnel lens, and may be any one as long as it can expand the light output angle of the light source 2 and achieve uniform light. Meanwhile, after the light emitting angle of the light source 2 is enlarged, the lighting device does not need to be provided with a higher distance, and the lighting rays can cover the whole light emitting plate 4, so that the thickness of the lighting device is thinner, and the lighting device is convenient to install.

It should be noted that, in the lighting device according to the above embodiment of the present disclosure, the direct type backlight is adopted, the light source 2 is covered with the light path adjusting member 5, the stepped scattering groove 111 is disposed on the inner side wall of the housing 11, and the light emitting plate 4 is disposed on the side of the scattering mirror 3 facing the light source 2, so that the illumination light emitted by the light source 2 is uniformly projected onto the scattering mirror 3. Compared with the prior scheme of obliquely irradiating the light source, the problem that the whole thickness of the lighting device is thicker because the lighting light rays emitted by the light source are uniformly projected onto the light-transmitting plate manufactured by the Rayleigh scattering principle and the distance between the light source and the light-transmitting plate is larger can be reduced. The lighting device of the above embodiment of the present disclosure may realize that the thickness of the lighting device is set below 160mm, and in particular, the thickness of the lighting device may be set in a range of 5mm to 160 mm.

In some embodiments, referring to fig. 7, the housing 1 includes a back plate 13 and a mount 12, the mount 12 being disposed at a periphery of the back plate 13, and the diffusion mirror 3 being disposed on the mount 12 and disposed parallel to the back plate 13. Further, a reflecting plate 15 and a light guiding device 14 are sequentially arranged between the back plate 13 and the scattering mirror 3, the light source 2 is arranged at the side part of the light guiding device 14, the light source 2 emits illumination light to the scattering mirror 3 in a side-in backlight mode, and the illumination light is reflected by the light guiding device 14 and the reflecting plate 15 and then emitted towards the scattering mirror 3. It will be appreciated that the light source 2 is disposed at a side portion of the lighting device, so that the thickness of the lighting device can be further reduced, and the back plate 13, the reflecting plate 15, the light guide device 14 and the scattering mirror 3 are sequentially bonded to each other, thereby reducing the thickness of the lighting device.

In particular, referring to fig. 8, the light guide device 14 has a fifth surface 141 and a sixth surface 142 that are disposed opposite to each other, the fifth surface 141 being disposed back to the scattering mirror 3, and the sixth surface 142 being disposed toward the scattering mirror 3. Part of the illumination light emitted by the light source 2 enters the fifth surface 141 through the side part of the light guide device 14 and exits through the sixth surface 142 after being reflected by the fifth surface 141, part of the illumination light emitted by the light source 2 enters the sixth surface 142 through the side part of the light guide device 14 and exits through the sixth surface 142 after being reflected by the sixth surface 142 onto the reflecting plate 15, and exits through the sixth surface 142 after being reflected by the reflecting plate 15.

It can be understood that the illumination light emitted by the light source 2 has a plurality of angles, the illumination light with a plurality of angles can be uniformly distributed on the fifth surface 141 and the sixth surface 142, the illumination light irradiated on the fifth surface 141 is reflected and then emitted to the sixth surface 142, the illumination light irradiated on the sixth surface 142 can be directly emitted to the scattering mirror 3, and also can be emitted to the scattering mirror 3 after being reflected for a plurality of times, thereby achieving the purpose of uniform illumination light, avoiding the problem of uneven illumination of the illumination device, and improving the user experience.

In some embodiments, with continued reference to fig. 8, the lighting device further comprises a light-emitting plate 4, the light-emitting plate 4 being arranged on the side of the diffuser 3 facing the light guide 14 and being arranged parallel to the diffuser 3. The light-emitting plate 4 has a third surface 41 and a fourth surface 42 which are oppositely arranged, the third surface 41 is arranged back to the scattering mirror 3, the fourth surface 42 is arranged towards the scattering mirror 3, and the illumination light emitted by the light source 2 is incident to the third surface 41 and emitted through the fourth surface 42 after being reflected by the light guide device 14 and the reflecting plate 15. It should be noted that the light-emitting plate 4 has a certain preset transmittance, and has a certain diffusion effect on the illuminating light, so as to perform soft light treatment on the light, and further to uniformly light.

It should be noted that, in the lighting device provided in the above embodiment of the present disclosure, a side-in backlight mode is adopted, and the reflecting plate 15, the light guide device 14 and the light emitting plate 4 are disposed between the back plate 13 and the scattering mirror 3, so that the lighting light emitted by the light source 2 is uniformly projected onto the scattering mirror 3. Compared with the prior scheme of obliquely irradiating the light source, the problem that the whole thickness of the lighting device is thicker because the lighting light rays emitted by the light source are uniformly projected onto the light-transmitting plate manufactured by the Rayleigh scattering principle and the distance between the light source and the light-transmitting plate is larger can be reduced. The lighting device of the above embodiment of the present disclosure may realize that the thickness of the lighting device is set below 160mm, and in particular, the thickness of the lighting device may be set in a range of 5mm to 160 mm.

It should be noted that in this document, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.

The above is merely a specific embodiment of the disclosure to enable one skilled in the art to understand or practice the disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (11)

1. A lighting device, comprising:

a housing;

the light source is arranged in the shell and used for emitting illumination light;

the scattering mirror is arranged on the transmission light path of the illumination light and is provided with a first surface and a second surface which are oppositely arranged, the first surface is close to the light source, and the second surface is far away from the light source;

the first surface is provided with a coating layer, the coating layer is configured to have a transmittance for light rays of a first preset wave band larger than that of light rays of other wave bands, when the light source is started, the illumination light rays are incident on the first surface and filtered out a first preset light color through the coating layer, and the first preset light color is emitted outwards through the second surface.

2. A lighting device as recited in claim 1, wherein said coating layer is further configured to have a reflectivity for light in a second predetermined wavelength band that is greater than the reflectivity for light in other wavelength bands, when said light source is turned off, external light is incident on said first surface and reflected off said coating layer to form a second predetermined light color, said second predetermined light color exiting outwardly through said second surface;

the first preset wave band and the second preset wave band are staggered.

3. A lighting device as recited in claim 2, wherein said first predetermined wavelength band is 390nm to 520nm and said second predetermined wavelength band is 550nm to 720nm;

or the first preset wave band is 540nm to 720nm, and the second preset wave band is 400nm to 510nm;

or the first preset wave band is 420nm to 510nm, and the second preset wave band is 480nm to 580nm;

alternatively, the first preset wave band is 560nm to 630nm, and the second preset wave band is 400nm to 520nm.

4. A lighting device as recited in claim 2, wherein a side of said coating layer remote from said light source is formed as a smooth surface so that said diffusing lens exhibits a specular visual effect in an off state of said light source.

5. A lighting device as recited in any one of claims 1-4, wherein said housing comprises a shell and a mount, said shell being formed as an open-ended housing structure, said mount being secured at an opening of said shell;

the light source is arranged at the bottom of the inner side of the shell, the scattering mirror is arranged on the fixing frame, and the light source emits irradiation light to the scattering mirror in a direct type backlight mode.

6. A lighting device as recited in claim 5, further comprising a light exit plate, said light exit plate being disposed on a side of said diffuser facing said light source and parallel to said diffuser;

the light emitting plate is provided with a third surface and a fourth surface which are oppositely arranged, the third surface faces away from the scattering mirror, the fourth surface faces towards the scattering mirror, part of illumination light emitted by the light source is incident to the third surface and exits through the fourth surface, part of illumination light emitted by the light source is reflected to the inner side wall of the shell through the third surface and is incident to the third surface again after being reflected and/or scattered by the inner side wall of the shell.

7. A lighting device as recited in claim 6, wherein said housing is provided with a scattering groove on an interior side wall thereof, said scattering groove being stepped, and wherein a portion of said illumination light emitted by said light source is reflected by said third surface onto said scattering groove and is scattered by said scattering groove before being incident again on said third surface at a plurality of angles.

8. A lighting device as recited in claim 5, further comprising an optical path adjustment component, said optical path adjustment component comprising a fresnel lens covered at said light source, said optical path adjustment component being configured to expand an exit angle of said light source and disperse illumination light emitted by said light source.

9. A lighting device as recited in any one of claims 1-4, wherein said housing comprises a back plate and a mount, said mount being disposed at a periphery of said back plate, said diffusing lens being disposed on said mount and disposed parallel to said back plate;

the back plate and the scattering mirror are sequentially provided with a reflecting plate and a light guide device, the light source is arranged on the side part of the light guide device, the light source emits illumination light to the scattering mirror in a side-in backlight mode, and the illumination light is reflected by the light guide device and the reflecting plate and then emitted towards the scattering mirror.

10. A lighting device as recited in claim 9, wherein said light guide device has a fifth surface and a sixth surface which are oppositely disposed, said fifth surface being disposed opposite said diffuser and said sixth surface being disposed opposite said diffuser;

part of the illumination light emitted by the light source is incident to the fifth surface through the side part of the light guide device and is emitted through the sixth surface after being reflected by the fifth surface, and part of the illumination light emitted by the light source is incident to the sixth surface through the side part of the light guide device and is emitted through the sixth surface after being reflected by the sixth surface to the reflecting plate, and is emitted through the sixth surface after being reflected by the reflecting plate.

11. A lighting device as recited in claim 9, further comprising a light exit plate, said light exit plate being disposed on a side of said diffuser facing said light guide and parallel to said diffuser;

the light emitting plate is provided with a third surface and a fourth surface which are oppositely arranged, the third surface faces away from the scattering mirror, the fourth surface faces towards the scattering mirror, and the illumination light emitted by the light source is incident to the third surface and emitted through the fourth surface after being reflected by the light guide device and the reflecting plate.