Lighting device

Abstract

The present disclosure relates to the technical field of lighting, and provides a lighting device. The lighting device comprises a shell, a light source and a scattering mirror. The light source is arranged on the shell and is used to emit illumination light. The scattering mirror is arranged on a transmission light path of the illumination light and has a first surface and a second surface arranged oppositely. A coating layer is arranged on the first surface. The coating layer is configured to have a transmittance to light of a first preset wave band greater than that to light of other wave bands. When the light source is turned on, the illumination light is incident on the first surface and is filtered by the coating layer to obtain a first preset light color. The first preset light color is emitted outward through the second surface. The lighting device provided by the present disclosure can simulate the state of the sky by arranging the coating layer on the scattering mirror to filter the first preset light color, so that the lighting device can simulate the state of the sky, has a simple structure, low production difficulty and high lighting stability.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of lighting, in particular to a lighting device. BACKGROUND

[0002] With the progress of society and the improvement of living quality, people have higher and higher requirements for lighting devices. In this environment, a new lamp appears in the field of home or commercial lighting, which can simulate the state of sky lighting, also known as blue sky lamp or blue sky lamp. This sky lamp mainly reflects the visual effect of simulating the sky.

[0003] In the related art, in order to better simulate the visual effect of the sky, the light source needs to be inclined to irradiate, and the light is diffused through a lens and then projected at a certain angle into a light-transmitting plate made of Rayleigh scattering effect to simulate the visual effect of the sky through scattering reaction. However, this technology causes the overall light emitting structure to present an inclined angle shape, which is complex and difficult to produce. SUMMARY

[0004] In order to solve the above technical problems or at least partially solve the above technical problems, the present disclosure provides a lighting device.

[0005] The present disclosure provides a lighting device, comprising:

[0006] a housing;

[0007] a light source arranged in the housing and configured to emit illumination light;

[0008] a scattering mirror arranged on a transmission light path of the illumination light, having a first surface and a second surface arranged oppositely, the first surface being arranged close to the light source, and the second surface being arranged away from the light source;

[0009] wherein a coating layer is arranged on the first surface, the coating layer is configured to have a transmittance of light of a first preset wavelength band greater than that of light of other wavelength bands, when the light source is turned on, the illumination light is incident on the first surface and filtered by the coating layer to obtain a first preset light color, and the first preset light color is emitted outward through the second surface.

[0010] The lighting device provided by the present 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 the transmission light path of the illumination light and has a first surface and a second surface arranged oppositely, the first surface is arranged close to the light source, the second surface is arranged away from the light source, the illumination light emitted by the light source is incident to the first surface and is emitted outward through the second surface. In specific implementation, a coating layer is arranged on the first surface, the coating layer is configured to have a transmittance to light of a first preset wave band greater than that to light of other wave bands, when the light source is turned on, the illumination light is incident to the first surface and is filtered out as a first preset light color through the coating layer, and the first preset light color is emitted outward through the second surface. That is, the transmittance of the coating layer is abruptly increased in the first preset wave band and is gently changed in other wave bands, and the light of the first preset wave band that can pass through the coating layer is more than the light of other wave bands that can pass through the coating layer, so that the outside of the lighting device presents a color corresponding to the light of the first preset wave band when the light source is turned on, that is, the first preset light color is filtered out through the coating layer, the first preset light color is emitted outward through the second surface, and finally the outside of the lighting device presents the first preset light color. Specifically, the first preset light color can be a light color that can simulate the state of the sky, so that the lighting device can simulate the state of the sky. Compared with the existing lighting device made by using Rayleigh scattering effect, the light source does not need to be inclined to irradiate, but only needs to ensure that the light source can irradiate the scattering mirror, that is, only needs to ensure that the scattering mirror is located on the transmission light path of the illumination light emitted by the light source, so that the coating layer arranged on the scattering mirror can filter out the preset color light from the illumination light, and the structure is simple, the production difficulty is low, and the lighting stability is higher.

[0011] In some embodiments, the coating layer is further configured to have a reflectivity to light of a second preset wave band greater than that to light of other wave bands, when the light source is turned off, external light is incident to the first surface and is reflected and cut off through the coating layer to form a second preset light color, and the second preset light color is emitted outward through the second surface.

[0012] The first preset wave band and the second preset wave band are arranged staggeredly.

[0013] In some embodiments, the first preset wave band is 390nm to 520nm, and the second preset wave band is 550nm to 720nm.

[0014] Alternatively, the first preset wave band is 540nm to 720nm, and the second preset wave band is 400nm to 510nm.

[0015] Alternatively, the first preset wave band is 420nm to 510nm, and the second preset wave band is 550nm to 720nm.

[0016] Alternatively, the first preset wavelength band is 560nm to 630nm, and the second preset wavelength band is 400nm to 520nm.

[0017] In some embodiments, the coating layer is formed as a smooth surface away from the side of the light source, so that the scattering mirror presents a mirror visual effect in the off state of the light source.

[0018] In some embodiments, the shell comprises a housing and a fixing frame, the housing is formed as a shell structure with one end open, and the fixing frame is fixed at the open end of the housing.

[0019] The light source is arranged at the inner bottom of the housing, and the scattering mirror is arranged on the fixing frame, and the light source adopts a direct backlight mode to emit illuminating light to the scattering mirror.

[0020] In some embodiments, the lighting device further comprises a light-emitting plate, which is arranged on the side of the scattering mirror facing the light source and is arranged in parallel with the scattering mirror.

[0021] The light-emitting plate has a third surface and a fourth surface arranged opposite to each other, the third surface is arranged away from the scattering mirror, and the fourth surface is arranged towards the scattering mirror, part of the illuminating light emitted by the light source is incident on the third surface and emitted through the fourth surface, part of the illuminating light emitted by the light source is reflected to the inner side wall of the housing through the third surface, and is incident on the third surface again after being reflected and / or scattered by the inner side wall of the housing.

[0022] In some embodiments, the inner side wall of the housing is provided with a scattering groove, the scattering groove is in a stepped shape, and part of the illuminating light emitted by the light source is reflected to the scattering groove through the third surface and scattered by the scattering groove to be incident on the third surface again at multiple angles.

[0023] In some embodiments, the lighting device further comprises a light path adjusting component, the light path adjusting component comprises a Fresnel lens covering the light source, and the light path adjusting component is used to expand the light-emitting angle of the light source and disperse the illuminating light emitted by the light source.

[0024] In some embodiments, the shell comprises a back plate and a fixing frame, the fixing frame is arranged at the periphery of the back plate, and the scattering mirror is arranged on the fixing frame and arranged in parallel with the back plate.

[0025] A reflective plate and a light guide device are sequentially arranged between the back plate and the scattering mirror, the light source is arranged at a side of the light guide device, the light source adopts a side-in backlight mode to emit the illumination light to the scattering mirror, and the illumination light is emitted to the scattering mirror after being reflected by the light guide device and the reflective plate.

[0026] In some embodiments, the light guide device has a fifth surface and a sixth surface arranged oppositely, the fifth surface is arranged away from the scattering mirror, and the sixth surface is arranged towards the scattering mirror.

[0027] Part of the illumination light emitted by the light source is incident to the fifth surface through the side of the light guide device and is reflected by the fifth surface and then is emitted through the sixth surface, and part of the illumination light emitted by the light source is incident to the sixth surface through the side of the light guide device and is reflected by the sixth surface to the reflective plate and then is emitted through the sixth surface after being reflected by the reflective plate.

[0028] In some embodiments, the illumination device further comprises a light exit plate, the light exit plate is arranged at a side of the scattering mirror towards the light guide device and is arranged in parallel with the scattering mirror.

[0029] The light exit plate has a third surface and a fourth surface arranged oppositely, the third surface is arranged away from the scattering mirror, and the fourth surface is arranged towards the scattering mirror, and the illumination light emitted by the light source is incident to the third surface and is emitted through the fourth surface after being reflected by the light guide device and the reflective plate. BRIEF DESCRIPTION OF DRAWINGS

[0030] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments consistent with the present disclosure and, together with the description, further serve to explain the principles of the present disclosure.

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced here. Obviously, for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0032] Figure 1 A structure schematic view of an illumination device according to an embodiment of the present disclosure;

[0033] Figure 2 A sectional view of an illumination device according to an embodiment of the present disclosure;

[0034] Figure 3 A partial schematic view of a scattering groove according to an embodiment of the present disclosure;

[0035] Figure 4A schematic diagram of a light propagation path of an embodiment of the present application;

[0036] Figure 5 A schematic diagram of a structure of a scattering mirror of an embodiment of the present application;

[0037] Figure 6 A schematic diagram of a structure of a light emitting plate of an embodiment of the present application;

[0038] Figure 7 A schematic diagram of a structure of a lighting device of another embodiment of the present application;

[0039] Figure 8 A sectional view of a lighting device of another embodiment of the present application;

[0040] Figure 9 A scattering mirror parameter fluctuation diagram of a blue sky effect of an embodiment of the present application;

[0041] Figure 10 A scattering mirror parameter fluctuation diagram of a sunset sky effect of an embodiment of the present application;

[0042] Figure 11 A scattering mirror parameter fluctuation diagram of a sky blue effect of an embodiment of the present application;

[0043] Figure 12 A scattering mirror parameter fluctuation diagram of a sunset light effect of an embodiment of the present application.

[0044] In the figure: 1, a housing; 11, an outer shell; 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 reflecting 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, a light path adjusting component; 6, a power supply. DETAILED DESCRIPTION

[0045] In order to enable a person skilled in the art to more clearly understand the above-mentioned purposes, features and advantages of the present disclosure, the solutions of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0046] In the following description, many specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure can also be implemented in other ways different from those described herein; obviously, the embodiments in the description are only some of the embodiments of the present disclosure, not all the embodiments.

[0047] The lighting device will be described in detail below through specific embodiments:

[0048] Reference Figures 1 to 12As shown, some embodiments of the present application provide a lighting device, which comprises a housing 1, a light source 2 and a scattering mirror 3.

[0049] The light source 2 is arranged in the housing 1 and used to emit illumination light; the scattering mirror 3 is arranged on the transmission light path of the illumination light and has a first surface 31 and a second surface 32 arranged oppositely, the first surface 31 is arranged close to the light source 2, and the second surface 32 is arranged away from the light source 2, the illumination light emitted by the light source 2 is incident to the first surface 31 and is emitted outward through the second surface 32.

[0050] In a specific implementation, the first surface 31 is provided with a coating layer 33, the coating layer 33 is configured to have a transmittance greater than that of other wave bands for a first preset wave band, when the light source 2 is turned on, the illumination light is incident to the first surface 31 and is filtered out as a first preset light color through the coating layer 33, and the first preset light color is emitted outward through the second surface 32.

[0051] That is, the transmittance of the coating layer 33 is suddenly increased in the first preset wave band, and the first preset wave band of light that can pass through the coating layer 33 is more than the other wave bands of light that can pass through the coating layer 33, so that the outside of the lighting device presents the color corresponding to the first preset wave band of light, that is, the first preset light color is filtered out through the coating layer 33, and the first preset light color is emitted outward through the second surface 32, so that the outside of the lighting device presents the first preset light color when the light source 2 is turned on. Specifically, the first preset light color can be a light color that can simulate the state of the sky, so that the lighting device can simulate the state of the sky.

[0052] For example, the transmittance of the coating layer 33 for the 390nm-520nm wave band of light is greater than that of other wave bands of light, that is, the transmittance of the coating layer 33 is suddenly increased in the 390nm-520nm wave band, and the trend of the remaining wave bands is gentle. In the case that the illumination light emitted by the light source 2 is white light, the white light passes through the coating layer 33, and because the transmittance of the coating layer 33 for the 390nm-520nm wave band is suddenly increased, the blue light penetration is increased, and the white light is emitted after passing through the coating layer 33, presenting a blue sky illumination effect, that is, presenting a cyan blue color, and the corresponding color spectrum is green cyan blue purple. The lighting device using the coating layer 33 presents a cyan blue color in the state that the light source 2 is turned on, that is, presents a sky blue color, so that the lighting device can simulate the state of the sky.

[0053] Of course, the transmittance of the coating layer 33 for other preset wave bands of light can also be suddenly increased according to needs to correspond to other hues of the color spectrum, so that the lighting device can simulate the state of the sky of other colors, such as sunset illumination and sunset illumination.

[0054] It should be noted that the lighting device provided by the embodiments of the present disclosure adopts the electroplating chemical color principle of the scattering mirror 3, that is, by setting the plating layer 33 on the scattering mirror body, and the transmittance of the plating layer 33 to the preset waveband of light is greater than the transmittance of the plating layer 33 to other wavebands of light, so that the lighting device can simulate the state of the sky under the state of the light source 2 being turned on. Compared with the existing lighting device made by using the Rayleigh scattering effect, the light source 2 does not need to be inclined to irradiate, but only needs to ensure that the light source 2 can irradiate on the scattering mirror 3, that is, only needs to ensure that the scattering mirror 3 is located in the transmission light path of the illumination light emitted by the light source 2, so that the illumination light can be filtered out to the preset color light by the plating layer 33 arranged on the scattering mirror 3. The structure is simple, the production difficulty is low, and the illumination stability is higher.

[0055] The lighting device provided by the embodiments of the present disclosure adopts the electroplating chemical color principle of the scattering mirror 3, that is, by setting the plating layer 33 on the scattering mirror body, and the transmittance of the plating layer 33 to the preset waveband of light is greater than the transmittance of the plating layer 33 to other wavebands of light, so that the lighting device can simulate the state of the sky under the state of the light source 2 being turned on. Compared with the existing lighting device made by using the Rayleigh scattering effect, the light source 2 does not need to be inclined to irradiate, but only needs to ensure that the light source 2 can irradiate on the scattering mirror 3, that is, only needs to ensure that the scattering mirror 3 is located in the transmission light path of the illumination light emitted by the light source 2, so that the illumination light can be filtered out to the preset color light by the plating layer 33 arranged on the scattering mirror 3. The structure is simple, the production difficulty is low, and the illumination stability is higher.

[0056] Further, the plating layer 33 is further configured to have a reflectivity to the second preset waveband of light greater than the reflectivity to other wavebands of light. When the light source 2 is turned off, the external light is incident on the first surface 31 and reflected by the plating layer 33 to form a second preset light color, and the second preset light color is emitted outward through the second surface 32.

[0057] That is, the reflectivity of the plating layer 33 is abruptly increased in the second preset waveband and is gently increased in the remaining wavebands. Compared with the light of other wavebands, the light of the second preset waveband reflected by the plating layer 33 is more than the light of other wavebands reflected by the plating layer 33, so that the outside of the lighting device presents the color corresponding to the second preset waveband of light when the light source 2 is not turned on, that is, the second preset light color reflected by the plating layer 33. Specifically, the second preset light color can be a light color capable of simulating the state of the sky, so that the lighting device can also simulate the state of the sky when the light source 2 is not turned on.

[0058] Exemplarily, the reflectivity of the plating layer 33 to the light of the 550nm-720nm waveband is greater than the reflectivity of the plating layer 33 to the light of other wavebands, that is, the reflectivity of the plating layer 33 is abruptly increased in the 550nm-720nm waveband and is gently increased in the remaining wavebands. In the state that the light source 2 does not emit light, the external light is reflected by the plating layer 33 to present a golden yellow color, and the corresponding color spectrum is red, orange and yellow. In this state, when the external light is irradiated to the inside of the lighting device through the scattering mirror 3, the light is reflected and cut off by the scattering mirror 3. The lighting device adopting the plating layer 33 presents a golden yellow color in the state that the light source 2 is not turned on, so that the lighting device can also simulate the state of the sky when the light source 2 is not turned on.

[0059] It should be noted that the first preset waveband and the second preset waveband are staggered, so that the first preset light color is different from the second preset light color. That is, all or part of the wavebands other than the first preset waveband are set as the second preset waveband, so that the light of the first preset waveband is filtered out by the coating layer 33, and the light of the second preset waveband is reflected, so that the lighting device presents different color effects when the light source 2 is turned on and when the light source 2 is turned off, respectively.

[0060] Specifically, the coating layer 33 can set different first preset wavebands as needed, so that the coating layer 33 filters out different first preset light colors, so that 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 as needed, so that the coating layer 33 reflects different second preset light colors, so that the lighting device can present different light colors when the light source 2 is not turned on, and the light color presented when the light source 2 is not turned on can be different from the light color when the light source 2 is turned on, thereby simulating different sky states.

[0061] In some embodiments, referring to Figure 9 The abscissa is wavelength (nm), the ordinate is percentage (%), the reflectivity is curve x, the transmittance is curve y, the first preset waveband is 390-520 nm, and the second preset waveband is 550-720 nm. That is, the coating layer 33 is designed to have a sudden increase in transmittance of light in the 390-520 nm waveband, and the transmittance of the rest of the waveband is relatively flat. Specifically, the illumination light is white light, and when the white light passes through, the transmittance of the corresponding blue light increases due to the sudden increase in transmittance of light in the 390-520 nm waveband, so as to present the illumination effect of a blue sky. Finally, the outside of the lighting device presents a cyan blue color, and the corresponding color spectrum is green cyan blue purple. At the same time, the coating layer 33 is designed to have a sudden increase in reflectivity of light in the 550-720 nm waveband, and when the light source 2 is turned off, the outside of the lighting device presents a golden yellow color, and the corresponding color spectrum presents a red orange yellow color.

[0062] In other embodiments, referring to Figure 10Fig. 4 shows the reflectivity and transmittance of the coating layer 33, wherein the abscissa is wavelength (nm), the ordinate is percentage (%), the reflectivity is curve x, and the transmittance is curve y. The first preset wavelength band is 540-720 nm, and the second preset wavelength band is 400-510 nm. In other words, the coating layer 33 is designed to have a sudden increase in transmittance of light in the wavelength band of 540-720 nm, and the transmittance of light in other wavelength bands is relatively flat. Specifically, the illuminating light is white light, and when the white light passes through, the transmittance of red light increases due to the sudden increase in transmittance of light in the wavelength band of 540-720 nm, so as to present a sunset irradiation effect, and the corresponding color spectrum presents a red-orange-yellow color spectrum. Meanwhile, the coating layer 33 is designed to have a sudden increase in reflectivity of light in the wavelength band of 400-510 nm, and when the light source 2 is turned off, the outside of the illuminating device presents a cyan-blue color spectrum.

[0063] In other embodiments, with reference to Figure 11 Fig. 5 shows the reflectivity and transmittance of the coating layer 33, wherein the abscissa is wavelength (nm), the ordinate is percentage (%), the reflectivity is curve x, and the transmittance is curve y. The first preset wavelength band is 420-510 nm, and the second preset wavelength band is 550-720 nm. In other words, the coating layer 33 is designed to have a sudden increase in transmittance of light in the wavelength band of 420-510 nm, and the transmittance of light in other wavelength bands is relatively flat. Specifically, the illuminating light is white light, and when the white light passes through, the transmittance of cyan light increases due to the sudden increase in transmittance of light in the wavelength band of 420-510 nm, so as to present a sky blue irradiation effect, and the corresponding color spectrum presents a blue-cyan color spectrum. Meanwhile, the coating layer 33 is designed to have a sudden increase in reflectivity of light in the wavelength band of 480-580 nm, and when the light source 2 is turned off, the outside of the illuminating device presents a green-blue color spectrum.

[0064] In other embodiments, with reference to Figure 12 Fig. 6 shows the reflectivity and transmittance of the coating layer 33, wherein the abscissa is wavelength (nm), the ordinate is percentage (%), the reflectivity is curve x, and the transmittance is curve y. The first preset wavelength band is 560-630 nm, and the second preset wavelength band is 400-520 nm. In other words, the coating layer 33 is designed to have a sudden increase in transmittance of light in the wavelength band of 560-630 nm, and the transmittance of light in other wavelength bands is relatively flat. Specifically, the illuminating light is white light, and when the white light passes through, the transmittance of red-orange-yellow light increases due to the sudden increase in transmittance of light in the wavelength band of 560-630 nm, so as to present a sunset irradiation effect, and the corresponding color spectrum presents a red-orange-yellow color spectrum. Meanwhile, the coating layer 33 is designed to have a sudden increase in reflectivity of light in the wavelength band of 400-520 nm, and when the light source 2 is turned off, the outside of the illuminating device presents a cyan-blue-violet color spectrum.

[0065] It should be noted that the range of the first preset wave band and the second preset wave band is not limited to the above range, and can be set according to actual needs, and the present disclosure does not limit this, as long as different sky states can be simulated. At the same time, the range of the first preset wave band and the second preset wave band can be designed according to the color temperature of the light source 2 to specific range values, so that the scattering mirror 3 corresponds to a certain transmittance and reflectivity.

[0066] In some embodiments, the side of the coating layer 33 away from the light source 2 is formed as a smooth surface, so that the scattering mirror 3 presents a mirror visual effect when the light source 2 is off. When the light source 2 is off, the external light rays pass through the scattering mirror 3 and irradiate the inside of the lighting device, most of the light rays are reflected and cut off by the scattering mirror 3, so that the outside of the lighting device is in a mirror state. Referring to Figure 5 As shown, the light rays e from the outside are incident on the side of the coating layer 33 away from the light source 2, and the light rays f are emitted outward after being reflected by the coating layer 33, so as to present a mirror effect on the side of the coating layer 33 away from the light source 2. Specifically, the power supply 6 supplies power to the lighting device.

[0067] Specifically, continuing to refer to Figure 5 As shown, the scattering mirror 3 includes a scattering mirror body and a coating layer 33 arranged on the scattering mirror body, the coating layer 33 is formed as the first surface 31 of the scattering mirror 3, and the illumination light emitted by the light source 2 passes through the scattering mirror 3 to filter out the first preset light color. The material of the scattering mirror body is preferably tempered glass, and of course it can also be engineering plastics such as PMMA, PC, PS, PET, etc., and the present disclosure does not limit this, as long as light can be emitted. Specifically, the coating layer 33 is formed by coating the scattering mirror body multiple times, and the coating principle can adopt electroplating chemical color principle.

[0068] In some embodiments, referring to Figure 1 and Figure 2 As shown, the housing 1 includes an outer shell 11 and a fixing frame 12, the outer shell 11 is formed as a housing 1 structure with one end open, and the fixing frame 12 is fixed at the opening of the outer shell 11. The light source 2 is arranged on the inner side bottom of the outer shell 11, the scattering mirror 3 is arranged on the fixing frame 12, and the light source 2 adopts a direct backlight mode to emit illumination light to the scattering mirror 3. The illumination light emitted by the light source 2 is emitted from the inner side bottom of the outer shell 11 to the scattering mirror 3, and the illumination light passes through the scattering mirror 3 to filter out the first preset light color. The first preset light color is emitted outward through the opening structure on the outer shell 11, so that the lighting device presents the first preset light color.

[0069] In specific implementation, referring to Figure 4As shown, the lighting device further comprises a light-emitting plate 4, which is arranged on the side of the scattering mirror 3 facing the light source 2 and is arranged in parallel with the scattering mirror 3. The illumination light emitted by the light source 2 is incident on the light-emitting plate 4 and is emitted from the light-emitting plate 4 to the scattering mirror 3, and finally the 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 illumination light, so as to perform soft light processing on the light.

[0070] With reference to Figure 6 As shown, the light-emitting plate 4 has a third surface 41 and a fourth surface 42 arranged oppositely. The third surface 41 is arranged away from the scattering mirror 3, and the fourth surface 42 is arranged towards the scattering mirror 3. Part of the illumination light emitted by the light source 2 is incident on the third surface 41 and is emitted through the fourth surface 42. Part of the illumination light emitted by the light source 2 is reflected to the inner side wall of the housing 11 through the third surface 41, and is incident on the third surface 41 again after being reflected and / or scattered by the inner side wall of the housing 11. After multiple reflections and refractions in the housing 11, the illumination light can be uniformly incident on the third surface 41 of the light-emitting plate 4 and provide uniform light to the scattering mirror 3, so as to avoid the problem of uneven illumination of the lighting device and ensure the lighting effect.

[0071] Specifically, the inner side wall of the housing 11 is provided with a scattering groove 111. The scattering groove 111 is in a stepped shape. Part of the illumination light emitted by the light source 2 is reflected to the scattering groove 111 through the third surface 41 and is incident on the third surface 41 again after being scattered by the scattering groove 111 at multiple angles. Figure 4 As shown, the illumination light a emitted by the light source 2 is incident on the third surface 41 at a certain angle. The light is divided into two parts. Part of the light d is directly emitted through the fourth surface 42. The other part of the light b is reflected to the scattering groove 111 and forms light c after being scattered by the scattering groove 111. Since the scattering groove 111 is in a stepped shape, the light b is scattered to form light c at multiple angles. After the light c is incident on the third surface 41, the light c can be emitted through the fourth surface 42 or be reflected by the third surface 41 back to the inside of the housing 11 and be reflected and scattered again. It can be understood that through multiple scattering and reflection, the illumination light can be uniformly incident on the third surface 41 and be filtered out of the first preset light color through the scattering mirror 3, so as to provide more uniform illumination light color. It should be noted that the light b can also be incident on the inner bottom of the housing 11 and be reflected to the third surface 41 through the inner bottom, so as to achieve the purpose of uniform light color.

[0072] In some embodiments, the lighting device further comprises a light path adjusting component 5, the light path adjusting component 5 comprises a Fresnel lens arranged at the light source 2, and the light path adjusting component 5 is used to expand the light emitting angle of the light source 2 and disperse the illumination light emitted by the light source 2. It should be noted that the light path adjusting component 5 is not limited to a Fresnel lens, as long as it can expand the light emitting angle of the light source 2 and achieve the purpose of uniform light, and the present disclosure does not limit it. At the same time, after the light emitting angle of the light source 2 is expanded, the lighting device does not need to be set at a high distance, and the illumination light can cover the entire light emitting plate 4, thereby making the thickness of the lighting device thinner and facilitating installation.

[0073] It should be noted that the lighting device using the above-mentioned embodiments of the present disclosure adopts a direct backlight type, and a light path adjusting component 5 is arranged at the light source 2, a stepped scattering groove 111 is arranged on the inner side wall of the shell 11, and the light emitting plate 4 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 existing scheme of tilting the light source to irradiate, the distance between the light source and the light-transmitting plate needs to be set larger in order to uniformly project the illumination light emitted by the light source onto the light-transmitting plate made by using the Rayleigh scattering principle, thereby causing the overall thickness of the lighting device to be thicker. The lighting device of the above-mentioned embodiments of the present disclosure can set the thickness of the lighting device to be less than 160 mm, specifically, the thickness of the lighting device can be set to be in the range of 5 mm to 160 mm.

[0074] In some embodiments, referring to Figure 7 It should be noted that the lighting device using the above-mentioned embodiments of the present disclosure adopts a direct backlight type, and a light path adjusting component 5 is arranged at the light source 2, a stepped scattering groove 111 is arranged on the inner side wall of the shell 11, and the light emitting plate 4 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 existing scheme of tilting the light source to irradiate, the distance between the light source and the light-transmitting plate needs to be set larger in order to uniformly project the illumination light emitted by the light source onto the light-transmitting plate made by using the Rayleigh scattering principle, thereby causing the overall thickness of the lighting device to be thicker. The lighting device of the above-mentioned embodiments of the present disclosure can set the thickness of the lighting device to be less than 160 mm, specifically, the thickness of the lighting device can be set to be in the range of 5 mm to 160 mm.

[0075] In specific implementation, referring to Figure 8As shown, the light guide device 14 has a fifth surface 141 and a sixth surface 142 arranged oppositely, the fifth surface 141 is arranged away from the scattering mirror 3, and the sixth surface 142 is arranged toward the scattering mirror 3. Part of the illumination light emitted by the light source 2 is incident on the fifth surface 141 through the side of the light guide device 14 and is reflected by the fifth surface 141 and then is emitted through the sixth surface 142. Part of the illumination light emitted by the light source 2 is incident on the sixth surface 142 through the side of the light guide device 14 and is reflected by the sixth surface 142 to the reflecting plate 15 and then is emitted through the sixth surface 142.

[0076] It can be understood that the illumination light emitted by the light source 2 has multiple angles, and the illumination light with multiple 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 emitted to the sixth surface 142 after being reflected. The illumination light irradiated on the sixth surface 142 can be directly emitted to the scattering mirror 3 or can be emitted to the scattering mirror 3 after being reflected multiple times, so as to achieve the purpose of uniform illumination light and avoid the problem of uneven illumination of the illumination device, thereby improving the user experience.

[0077] In some embodiments, continuing to refer to Figure 8 As shown, the illumination device further includes a light-emitting plate 4 arranged on the side of the scattering mirror 3 facing the light guide device 14 and arranged in parallel with the scattering mirror 3. The light-emitting plate 4 has a third surface 41 and a fourth surface 42 arranged oppositely, the third surface 41 is arranged away from the scattering mirror 3, and the fourth surface 42 is arranged toward the scattering mirror 3. The illumination light emitted by the light source 2 is reflected by the light guide device 14 and the reflecting plate 15, is incident on the third surface 41, and is emitted through the fourth surface 42. It should be noted that the light-emitting plate 4 has a certain preset transmittance and has a certain diffusion effect on the illumination light, so as to perform soft light processing on the light and further uniformize the light.

[0078] It should be noted that the illumination device provided by the above-mentioned embodiments of the present disclosure adopts a side-in backlight mode, and the reflecting plate 15, the light guide device 14, and the light-emitting plate 4 are arranged between the back plate 13 and the scattering mirror 3, so as to realize uniform projection of the illumination light emitted by the light source 2 to the scattering mirror 3. Compared with the existing scheme in which the light source is inclined to irradiate, the distance between the light source and the light-transmitting plate made of a scattering principle can be set to be large, so as to reduce the problem that the overall thickness of the illumination device is large. The thickness of the illumination device in the above-mentioned embodiments of the present disclosure can be set to be less than 160 mm, specifically, the thickness of the illumination device can be set to be in the range of 5 mm to 160 mm.

[0079] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0080] The above are merely specific embodiments of this disclosure, enabling those skilled in the art to understand or implement this disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this disclosure. Therefore, this disclosure is not to be limited to these embodiments, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An illumination device, characterized by The application relates to an illumination device, comprising: a shell; a light source arranged in the shell for emitting illumination light; a scattering mirror arranged on a transmission light path of the illumination light, the scattering mirror having oppositely arranged first and second surfaces, the first surface being arranged close to the light source, and the second surface being arranged away from the light source; wherein a coating layer is arranged on the first surface, the coating layer being configured to have a transmittance to light of a first preset waveband greater than that to light of other wavebands, when the light source is turned on, the illumination light is incident on the first surface and filtered by the coating layer to form a first preset light color, and the first preset light color is emitted outward through the second surface; the coating layer is further configured to have a reflectivity to light of a second preset waveband greater than that to light of other wavebands, when the light source is turned off, external light is incident on the first surface, reflected by the coating layer to form a second preset light color, and the second preset light color is emitted outward through the second surface; wherein the first preset waveband and the second preset waveband are arranged staggeredly.

2. The illumination device of claim 1, wherein The first preset waveband is 390-520 nm, and the second preset waveband is 550-720 nm; alternatively, the first preset waveband is 540-720 nm, and the second preset waveband is 400-510 nm; alternatively, the first preset waveband is 420-510 nm, and the second preset waveband is 550-720 nm; alternatively, the first preset waveband is 560-630 nm, and the second preset waveband is 400-520 nm.

3. The illumination device of claim 1, wherein The side of the coating layer away from the light source is formed into a smooth surface, so that the scattering mirror presents a mirror visual effect in the state that the light source is turned off.

4. The lighting device according to any one of claims 1 to 3, characterized in that The shell comprises an outer shell formed into a shell structure with one end open and a fixing frame fixed at the open end of the outer shell; the light source is arranged at the inner bottom of the outer shell, the scattering mirror is arranged on the fixing frame, and the light source adopts a direct backlight mode to emit illumination light to the scattering mirror.

5. The illumination device of claim 4, wherein, The illumination device further comprises a light-emitting plate arranged on the side of the scattering mirror facing the light source and arranged in parallel with the scattering mirror; the light-emitting plate has oppositely arranged third and fourth surfaces, the third surface is arranged to face away from the scattering mirror, and the fourth surface is arranged to face the scattering mirror, part of the illumination light emitted by the light source is incident on the third surface and emitted through the fourth surface, and part of the illumination light emitted by the light source is reflected to the inner side wall of the outer shell through the third surface and then incident on the third surface again after being reflected and / or scattered by the inner side wall of the outer shell.

6. The illumination device of claim 5, wherein, The inner side wall of the outer shell is provided with a scattering groove in a stepped manner, part of the illumination light emitted by the light source is reflected to the scattering groove through the third surface and then incident on the third surface again at multiple angles after being scattered by the scattering groove.

7. The illumination device of claim 4, wherein, The lighting device further comprises a light path adjusting component, which comprises a Fresnel lens arranged at the light source, and is used to expand the light emitting angle of the light source and disperse the illumination light emitted by the light source.

8. The lighting device according to any one of claims 1 to 3, characterized in that The shell comprises a back plate and a fixing frame arranged at the periphery of the back plate, and the scattering mirror is arranged on the fixing frame and 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 at the side of the light guide device, the light source adopts a side-in backlight mode to emit illumination light to the scattering mirror, and the illumination light is emitted to the scattering mirror after being reflected by the light guide device and the reflecting plate.

9. The illumination device of claim 8, wherein, The light guide device has a fifth surface and a sixth surface arranged oppositely, the fifth surface is arranged away from the scattering mirror, and the sixth surface is arranged towards the scattering mirror. Part of the illumination light emitted by the light source is incident to the fifth surface through the side of the light guide device and is reflected by the fifth surface and then emitted through the sixth surface, and part of the illumination light emitted by the light source is incident to the sixth surface through the side of the light guide device and is reflected by the sixth surface to the reflecting plate, and then is reflected by the reflecting plate and emitted through the sixth surface.

10. The illumination device of claim 8, wherein, The lighting device further comprises a light emitting plate arranged on the side of the scattering mirror towards the light guide device and parallel to the scattering mirror. The light emitting plate has a third surface and a fourth surface arranged oppositely, the third surface is arranged away from the scattering mirror, and the fourth surface is arranged 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.

Images