WO2025108434A1 - Lighting fixture - Google Patents

Abstract

A lighting fixture (100), comprising: a housing (600), the housing (600) comprising a bottom wall (610) and a frame (620) extending from the bottom wall (610) in a direction away from the bottom wall (610); a surface light-emitting apparatus (200), disposed on the bottom wall (610) and surrounded by the frame (620), and having a first light-emitting surface (201), the first light-emitting surface (201) simulating sunlight; and a projection system (400), comprising at least one projection apparatus (410), the projection apparatus (410) being installed in the frame (620) and configured to project a light spot, the shape of the light spot being consistent with the shape of the first light-emitting surface (201).

Description

Lighting

This application claims priority to a Chinese patent application filed on November 23, 2023, with application number 202323184206.8 and invention name “Lamp”. The entire contents of this patent application are incorporated by reference into this application.

Technical Field

The present application relates to the field of lighting, and in particular to a lamp.

Background Art

With the improvement of living standards, people have higher and higher demands for lighting in different scenarios. Among them, lamps that can simulate outdoor natural ambient light are gradually favored by the market and are widely used in indoor lighting of homes, office buildings, shopping malls, stadiums, stations, airports, etc. Traditional blue sky lamps are generally composed of a light source and a pattern plate with blue sky and white clouds drawn on it. The pattern plate is illuminated by the light source to form an outdoor blue sky light environment. However, this solution cannot truly show the matching effect of blue sky and daylight, has poor layering, lacks three-dimensional sense, and has poor simulation fidelity.

In response to this, blue sky lamps have appeared on the market that use light sources combined with scattering panels to create sunlight similar to that in nature. However, when real sunlight shines into the house through the window, it will form light spots on the walls or ground inside the room.

In view of this, it is indeed necessary to provide a lamp that can simulate the light spot of sunlight shining through the window on the wall or the ground.

Summary of the invention

The purpose of the present application is to provide a lamp that projects a light spot.

To achieve the above-mentioned purpose, the present application provides a lamp, comprising: a shell, comprising a bottom wall and a frame extending from the bottom wall to a direction away from the bottom wall; a surface light-emitting device, arranged on the bottom wall and surrounded by the frame, having a first light-emitting surface, the first light-emitting surface imitating sunlight; a projection system, comprising at least one projection device, the projection device being installed in the frame, the projection device being configured to project a light spot, the shape of the light spot being consistent with the shape of the first light-emitting surface.

Optionally, the spectrum of the surface light-emitting device is close to the spectrum of sunlight, so that the first light-emitting surface imitates the light of sunlight; alternatively, the spectrum of the surface light-emitting device is a white light spectrum, and the surface light-emitting device also includes a diffusion structure, which includes nanoparticles to form Rayleigh scattering, so that the first light-emitting surface imitates the light of the blue sky.

Optionally, the projection device includes a light-emitting component, a lens barrel component fixedly connected to the light-emitting component, and a lens component arranged inside the lens barrel component, the lens component is arranged on the light-emitting path of the light-emitting component and is configured to adjust the light-emitting angle of the light-emitting component, the frame has an opening, and a side of the lens barrel component away from the light-emitting component is exposed to the frame through the opening.

Optionally, the lens barrel assembly includes at least two detachably connected lens barrels, and a lens is correspondingly arranged in each lens barrel.

Optionally, the lens barrel assembly includes a first lens barrel, a second lens barrel and a third lens barrel that are detachably connected in sequence, the first lens barrel is connected to the light-emitting assembly, the third lens barrel is at least partially exposed from the frame, and the lens assembly includes a first lens arranged in the first lens barrel, a second lens arranged in the second lens barrel and a third lens arranged in the third lens barrel.

Optionally, the projection device further includes an aperture, which is disposed between the light-emitting component and the first lens and is configured to control the intensity and shape of the light beam projected by the lamp bead.

Optionally, the projection system includes a plurality of projection devices, and the direction of the output light beam of each of the plurality of projection devices is different.

Optionally, the projection device is movably connected to the frame via a connecting piece, and the projection device can rotate relative to the frame, so that the projection device forms a simulated sun spot of a preset shape on the wall or the ground in different directions.

Optionally, the preset shape of the simulated solar light spot includes at least one of a circular light spot, an elliptical light spot or a quadrilateral light panel.

Optionally, the surface light-emitting device includes a first light-emitting module, and the light emitted by the first light-emitting module is emitted through the first light-emitting surface to form light simulating sunlight. The simulated sunlight spots formed by the irradiation of the light-emitting component in the projection device are distributed on the outside of the light simulating sunlight formed by the first light-emitting module.

Compared with the prior art, the technical solution of the present application has the following beneficial effects: the projection system in the lamp of the present application can project a light spot onto the ground or wall to simulate the light and shadow effect of real sunlight shining through the window on the ground or wall. The shape of the light spot projected by the projection system is consistent with the shape of the first light emitting surface, thereby enhancing the visual experience of the lamp.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a three-dimensional structural diagram of a lamp according to an embodiment of the present application.

FIG. 2 is a cross-sectional view of the lamp shown in FIG. 1 .

FIG. 3 is an exploded view of the structure of the lamp shown in FIG. 1 .

FIG. 4 is a schematic plan view of the first light-emitting module in the lamp shown in FIG. 3 .

FIG. 5 is a schematic diagram of a light emitting module in the first light emitting module shown in FIG. 3 .

FIG. 6 is a schematic diagram of a second light-emitting module in the lamp described in FIG. 3 .

FIG. 7 is an exploded view of the structure of the second embodiment of the side-light emitting device in the present application.

FIG. 8 is a schematic diagram of the second light-emitting module in FIG. 7 .

FIG. 9 is an exploded view of the structure of the light guide member of the third embodiment of the side-light emitting system in the present application.

FIG. 10 is a three-dimensional structural diagram of a projection device according to an embodiment of the present application.

FIG. 11 is an exploded view of the structure of the projection device shown in FIG. 11 .

FIG. 12 is a diagram showing the lighting effect of a lamp according to a preferred embodiment of the present application.

FIG. 13 is a diagram showing the lighting effects of a surface-light-emitting device and a side-light-emitting device of a lamp according to a preferred embodiment of the present application.

Reference numerals:

100- lamps;

200 - surface light emitting device, 201 - first light emitting surface, 210 - first light emitting module, 211 - first substrate, 212 - light emitting module, 2121 - first light emitting unit, 2122 - second light emitting unit, 220 - diffusion structure, 240 - transparent plate, 250 - inner frame;

300-side light emitting device, 301-second light emitting surface, 302-non-light emitting surface, 303-virtual image, 304-light/shadow transition zone, 310-second light emitting module, 311-second substrate, 312-light emitting element, 320-light guide assembly, 321-light emitting element, 322-light guide element, 3221-V prism microstructure, 323-reflector, 324-light shielding element, 325-annular lens;

400-projection system, 410-projection device, 420-light emitting component, 421-aluminum substrate, 422-lamp beads, 430-lens assembly, 431-first lens, 432-second lens, 433-third lens, 440-aperture, 450-lens barrel assembly, 451-first lens barrel, 452-second lens barrel, 453-third lens barrel;

500-installation system;

600 - shell, 610 - bottom wall, 620 - frame.

DETAILED DESCRIPTION

In order to make the objectives, technical solutions and advantages of the present application clearer, the present application is described in detail below with reference to the accompanying drawings and specific embodiments.

It should be noted here that in order to avoid obscuring the present application due to unnecessary details, only the structures and/or processing steps closely related to the scheme of the present application are shown in the accompanying drawings, while other details that are not closely related to the present application are omitted.

In addition, it should be noted that the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

Please refer to Figures 1-3, which are a lamp 100 of a preferred embodiment of the present application, including a surface light-emitting device 200, a side light-emitting device 300 and a projection system 400. The surface light-emitting device 200 is configured to simulate sunlight at different time periods in nature, and the side light-emitting device 300 is arranged on the outside of the surface light-emitting device 200. The side light-emitting device 300 is configured to simulate the effect of sunlight shining on the edge of the skylight. In addition, the side light-emitting device 300 can also form a virtual image 303. The projection system 400 is arranged on the side of the side light-emitting device 300, and is configured to form a light spot on the ground or the wall.

The lamp 100 includes a shell 600, the shell 600 includes a bottom wall 610 and a frame 620 extending from the bottom wall 610 to a direction away from the bottom wall 610, and a light outlet is formed between the bottom wall 610 and the frame 620. The surface light-emitting device 200 includes a first light-emitting module 210 and a diffusion structure 220. The first light-emitting module 210 is fixedly connected to the bottom wall 610, and the first light-emitting module 210 is configured to emit light to the diffusion structure 220. The diffusion structure 220 is installed in the frame 620, and the diffusion structure 220 covers the first light-emitting module 210. The diffusion structure 220 is configured to even out the light emitted by the first light-emitting module 210.

In an optional embodiment, the surface light-emitting device 200 is a ceiling lamp, including a chassis, a mask, and a first light-emitting module 210, and the first light-emitting module 210 is a full-spectrum LED chip that can simulate the spectrum of sunlight. In other embodiments, the first light-emitting module 210 can also be a conventional white light source, and nanoparticles are added to the diffusion structure 220 of the surface light-emitting device 200 to form Rayleigh scattering, so that the first light-emitting surface 201 appears blue like the sky. This application is not limited to this.

Referring to FIGS. 2-5 , in a preferred embodiment of the present application, the surface light-emitting device 200 includes a first light-emitting module 210 and a diffusion structure 220. The first light-emitting module 210 includes a first substrate 211 and a plurality of light-emitting modules 212. The first substrate 211 is fixedly connected to the bottom wall 610. The light-emitting modules 212 are installed on a side of the first substrate 211 away from the bottom wall 610 and are electrically connected through the first substrate 211.

The light emitting module 212 includes at least two light emitting units, which can emit light of at least two spectra. The at least two light emitting units are staggered, and adjacent light emitting units of the same type are inverted.

As shown in FIG. 5 , in a preferred embodiment, each light-emitting module 212 on the first light-emitting module 210 includes a first light-emitting unit 2121 and a second light-emitting unit 2122, wherein the first light-emitting unit 2121 and the second light-emitting unit 2122 are staggered, and two adjacent first light-emitting units 2121/second light-emitting units 2122 are inverted. The first light-emitting unit 2121 includes any two of the four different colors of light-emitting elements, and the second light-emitting unit 2122 includes the remaining two colors of the four different colors of light-emitting elements. From left to right in a single light-emitting module are the first light-emitting unit 2121, the second light-emitting unit 2122, the first light-emitting unit 2121, and the second light-emitting unit 2122. The first light-emitting unit 2121 and the second light-emitting unit 2122 are staggered, and the adjacent first light-emitting units 2121 or second light-emitting units 2122 are inverted. Different lighting effects can be achieved through these four different colors of light-emitting elements, and the staggered distribution of different types of light-emitting units and the inverted distribution of the same type of light-emitting units make the light color emitted by the surface light-emitting device 200 more uniform, which can simulate the color of sunlight at different times and achieve a dynamic effect of light.

In this embodiment, each light emitting module includes two first light emitting units 2121 and two second light emitting units 2122. In other embodiments, the number of first light emitting units 2121 and second light emitting units 2122 included in the light emitting module 212 may be greater, which is not limited in the present application.

A light source lens (not shown) is also mounted on the light-emitting unit of the light-emitting module. In the present embodiment, a light source lens is mounted on each light-emitting unit, that is, the light source lens and the light-emitting unit are arranged one by one. With such an arrangement, the light emitted by the light-emitting unit can be concentrated to the center of the light source lens and then emitted outward, thereby avoiding interference between the light rays. In other embodiments, the light source lens can also be a two-in-one, four-in-one or other multi-in-one lens, so that a single light source lens can cover more light-emitting units, or it can be a light source lens that covers the entire light-emitting unit, which can reduce the number of light source lenses and make production and assembly more convenient and quick.

In this embodiment, the light-emitting units are arranged in a circular shape on the first substrate 211. Specifically, they are arranged in a plurality of concentric circles, and the number of light-emitting units in each circle is a multiple of 6, 7 or 8. The number of light-emitting units in each concentric circle is determined according to the voltage of the light-emitting unit and the voltage of the driving power supply. In this embodiment, the voltage of the lamp bead 422 is 3V, and the voltage of the driving power supply is 24V, so a string of 8 is adopted, that is, the number of light-emitting units in each concentric circle is a multiple of 8.

In this embodiment, there are a total of Ri circles of light-emitting units on the first substrate 211, where i≥2, the number of light-emitting units in the R1th circle is N, the number of light-emitting units in the R2th circle is 2N, and the number of light-emitting units in the Rith circle is i*N. It is assumed that the R1th circle is 1 string, marked as 1_1, the R2th circle is 2 strings, marked as 2_1 and 2_2, and so on. The Rith circle is marked as i_1 to i_i, and there are a total of i*(i+1)*(i+2)/6 strings, which is equivalent to being able to adjust i*(i+1)*(i+2)/6 strings of picture beams. Since there are four light-emitting elements of different colors, various colors and brightness can be adjusted for 4*i*(i+1)*(i+2)/6 areas. By accurately controlling the power of the light-emitting units in different areas through the control system, continuous changes in light from morning to night can be achieved.

In other embodiments, the light emitting units may be distributed on the first substrate 211 in other shapes such as a U-shape, and the present application does not limit this.

The surface light-emitting device 200 includes an inner frame 250 and a diffusion structure 220. The inner frame 250 is sleeved in the frame 620. The diffusion structure 220 is fixedly connected to one end of the inner frame 250 away from the first light-emitting module 210. The light emitted by the light-emitting unit in the first light-emitting module 210 passes through the diffusion structure 220. The diffusion structure 220 diffuses the light and divides the line light source or point light source into a uniform surface light source. In this embodiment, the diffusion structure 220 is a diffusion plate, the transmittance of the diffusion plate reaches 40%-65%, and the thickness of the diffusion plate is about 3mm.

The diffuser can effectively eliminate the granularity of the light emitted from the first light-emitting module 210 and has the function of diffusing light, that is, the light will be scattered on its surface, and the light will be spread softly and evenly. After the light is diffused by the diffuser, the irradiation area is larger, the light uniformity is better, and the chromaticity is stable.

In some other embodiments, the diffusion structure 220 may also be a microstructured structural member, which also covers the light-emitting module and can also play a good light-homogenizing role, which is not limited in the present application.

In some embodiments, the surface light-emitting device 200 also includes a transparent plate 240, which is fixedly connected to one end of the frame 620 away from the first light-emitting module 210, and the transparent plate 240 is located on the side of the first light-emitting surface 201 away from the first light-emitting module 210. The side of the transparent plate 240 away from the first light-emitting surface 201 is a mirror surface. At least part of the light emitted by the side light-emitting device 300 is projected onto the transparent plate 240 after passing through the second light-emitting surface 301, and is reflected by the transparent plate 240 to form a virtual image 303, so as to simulate the window shadow effect formed on the window when one side of the window is illuminated by sunlight, so that it appears to the human eye to have a sense of depth and transparency.

The reflectivity of the mirror surface of the transparent plate 240 to light is greater than the transmittance to light, so that external light can be limited from entering the transparent plate 240 from the light-emitting surface. Optionally, the material of the transparent plate 240 can be an inorganic material, and the inorganic material can be quartz glass. The transparent plate 240 can also be made of an organic material, and the organic material can be a polymer transparent material such as organic glass, which is not limited in the present application.

In some embodiments, a thin unidirectional film layer, such as tin, silver or aluminum, is plated on the light-emitting surface of the transparent plate 240 by a crystal plating process to form a unidirectional film layer. The crystal plating process can make the unidirectional film layer have a relatively high smoothness. In other embodiments, the transparent plate 240 can be selected according to actual conditions, and there is no limitation here. The thickness of the unidirectional film layer can be adjusted according to actual conditions. When the thickness of the unidirectional film layer increases, its reflectivity and transmittance will change, and the reflectivity is higher than the transmittance to achieve the effect of one-way perspective.

By controlling the brightness changes of light-emitting units in different areas, different lighting effects such as morning glow and evening glow can be achieved.

The side-light-emitting device 300 is detachably connected to the lamp 100, and is arranged between the frame 620 and the surface-light-emitting device 200, and is arranged around the first light-emitting surface 201 of the surface-light-emitting device 200. The side-light-emitting device 300 extends along the light emitting direction of the first light-emitting module 210, and the side-light-emitting device 300 has a second light-emitting surface 301 attached to the side of the frame 620 close to the first light-emitting surface 201. The side-light-emitting device 300 also includes a second light-emitting module 310, and the second light-emitting module 310 is located between the second light-emitting surface 301 and the frame 620 in the horizontal direction. The light emitted by the second light-emitting module 310 passes through the second light-emitting surface 301 and is emitted in a direction away from the frame 620. The side-light device 300 is different from the conventional ambient light in that it only emits light toward the inner side of the lamp 100. In this embodiment, the frame 620 is made of an opaque material, thereby creating an effect of sunlight entering and illuminating the window sill, visually forming a light-transmitting window effect.

The side-light emitting device 300 also includes a non-light emitting surface 302, which is also arranged away from the frame 620, and a light/shadow transition zone 304 is formed between the non-light emitting surface 302 and the second light emitting surface 301. As shown in FIG13, to simulate sunlight entering from one side, illuminating the frame 620 on one side of the window, and forming a dark side on the frame 620 on the other side of the window, so that the display effect is more realistic, the second light emitting surface 301 and the non-light emitting surface 302 are connected in an annular direction to form an annular surface surrounding the outer periphery of the first light emitting surface 201, and the light/shadow transition zone 304 is located at the junction of the second light emitting surface 301 and the non-light emitting surface 302. The light/shadow transition zone 304 is used to form a light-dark boundary area between the second light emitting surface 301 and the non-light emitting surface 302, which can be a continuously changing area from light to dark, or a clear dividing line.

The side-light-emitting device 300 includes a second substrate 311 surrounding the first light-emitting surface 201 and a light-emitting component 312 arranged on the second substrate 311. The second substrate 311 includes a light-emitting area arranged close to the second light-emitting surface 301 and a non-light-emitting area arranged away from the second light-emitting surface 301, so as to form an illuminated second light-emitting surface 301 and an unilluminated non-light-emitting surface 302 on the periphery of the first light-emitting surface 201. The light-emitting component 312 is provided on the light-emitting area of the second substrate 311, and the light-emitting component 312 may not be provided in the non-light-emitting area.

In some embodiments, the side-light emitting device 300 also includes a shading member 324 facing away from the second light emitting surface 301, and the second light emitting module 310 and the shading member 324 together surround the first light emitting surface 201 on one side close to the frame 620 to form an illuminated second light emitting surface 301 and an unilluminated non-light emitting surface 302 on the periphery of the first light emitting surface 201.

The side light emitting device 300 can be configured as a whole to rotate relative to the surface light emitting device 200, and the micro motor set in the lamp 100 can be used to drive the side light emitting device 300 to rotate, so as to better simulate the effect of the sun rising in the east and setting in the west.

The side-light emitting device 300 is described below by means of three specific embodiments, but the invention should not be limited thereto.

Embodiment 1

As shown in FIGS. 2-3 and 6 , in the present embodiment, the light emission direction of the second light-emitting module 310 is the same as the light emission direction of the first light-emitting module 210. The side-light-emitting device 300 includes a second light-emitting module 310 and a light guide assembly 320. The light guide assembly 320 includes a light guide member 322 and a light output member 321. The light guide member 322 is disposed below the second light-emitting module 310. The second light-emitting module 310 emits light toward the light guide member 322 (i.e., the second light-emitting module 310 is direct-down light-emitting). The light guide member 322 is configured to refract the light emitted from the second light-emitting module 310. The light output member 321 is located on the side of the light guide member 322 away from the frame 620. After being refracted by the light guide member 322, the light emitted from the light guide member 322 is then emitted toward the side away from the frame 620 via the light output member 321. The light guide 322 can control the emission angle of the light, so that the light is emitted at a small angle, with a long projection distance and stronger transparency.

In some other embodiments, the light emitted by the second light-emitting module 310 may also be emitted vertically upward into the light-guiding component 320 , which is not limited in the present application.

As shown in Figure 6, the second light-emitting module 310 includes a second substrate 311 and a light-emitting component 312 installed on a partial area of the second substrate 311. When the light-emitting component 312 on the second light-emitting module 310 emits light outward, the area in the light guide component 320 corresponding to the light-emitting component 312 on the second substrate 311 is in a bright state (i.e., the second light-emitting surface 301 of the side-light-emitting device 300), and the area on the light guide component 320 that does not correspond to the light-emitting component 312 on the second substrate 311 is in a dark state (i.e., the non-light-emitting surface 302 of the side-light-emitting device 300), so as to simulate the effect of illuminating the edge of one side of the window when sunlight shines through the window into the room.

In some other embodiments, the light emitting parts 312 may be installed in all areas of the second substrate 311. By controlling the working state of the light emitting parts 312 in different areas and realizing the change of the light source by lighting different positions, the conversion of the bright area and the dark area on the light emitting part 321 can be realized, simulating the effect of sunlight irradiating the edge of the skylight at different angles at different time periods of the day, and realizing sunrise and sunset. In this embodiment, the frame 620 is made of semi-transparent or translucent material. By controlling the different luminous colors of the light emitting parts 312 in different areas, a rainbow effect can be formed through the frame 620, thereby enhancing the visual experience of the lamp 100.

Preferably, the light guide member 322 and the light output member 321 are made of transparent optical materials such as PMMA and PC.

The light emitted after passing through the light guide member 322 will pass through the light emitting member 321 . The light emitting member 321 can eliminate the granularity of the light emitted by the second light emitting module 310 . Meanwhile, the light emitted after passing through the light emitting member 321 will be more uniform.

A reflective member 323 is attached to a side of the light guide member 322 away from the light emitting member 321 to reflect the light emitted to this area back so that the light is emitted toward the light emitting member 321, thereby improving the light concentration.

The portion of the light emitting member 321 that is not covered by the light guiding member 322 is covered with a shading member 324. The shading member 324 arranged here can prevent light from leaking out of this portion of the light emitting member 321, so as to ensure that this portion of the light emitting member 321 is in a dark state, simulating the effect of real sunlight shining on the edge of a window or a skylight.

In some other embodiments, the shading member 324 can rotate around the light guide member 322. When all areas on the second substrate 311 are installed with light-emitting members 312, the light-shielding member 324 can be rotated to achieve a change in the bright area and the dark area on the light output member 321.

The height of the shading member 324 can be adjusted according to actual conditions by means of an elastic member provided in cooperation with a micro motor.

Embodiment 2

As shown in FIGS. 7-8 , in the present embodiment, the light emission direction of the second light-emitting module 310′ intersects with the light emission direction of the first light-emitting module 210, the side-light-emitting device 300 includes a light-emitting member 321, the light-emitting member 321 is disposed between the frame 620 and the first light-emitting surface 201, and exceeds the first light-emitting surface 201 along the extension direction of the frame 620, the second light-emitting module 310′ is disposed on the side of the light-emitting member 321 facing the frame 620, the second light-emitting module 310′ includes a second annular substrate 311′ and a light-emitting member 312 installed on the inner side of the substrate, the second light-emitting module 310′ emits light in the direction of the light-emitting member 321, and the emitted light is directly incident into the light-emitting member 321 from the side of the light-emitting member 321.

The side-light-emitting device 300' also includes an annular lens 325, which is located between the light-emitting element 321 and the second light-emitting module 310'. The annular lens 325 is connected to the inner side of the second substrate 311' and covers the light-emitting element 312. The light emitted by the light-emitting element 312 is incident on the light incident surface of the annular lens 325, refracted on the light incident surface, enters the annular lens 325 under the condition of satisfying Snell's law, and then refracted on the light-emitting surface. After being emitted from the annular lens 325, it passes through the light-emitting element 321 to achieve uniform emission of the light.

In this embodiment, the second substrate 311' can be made of a flexible printed circuit board (FPC). In other embodiments, the second substrate 311' can also be made of other materials.

Preferably, the light emitting element 321 is made of transparent optical materials such as PMMA and PC.

In some other embodiments, it can also be arranged that the entire area on the second substrate 311' is installed with light-emitting elements 312, and the second substrate 311' is divided into a plurality of light-emitting areas, each light-emitting area includes a plurality of light-emitting elements 312, and each light-emitting area can be individually controlled for lighting. By controlling the working state of different light-emitting areas, the conversion between the bright area and the dark area on the light-emitting element 321 can be realized, simulating the effect of sunlight shining on the edge of the skylight at different angles at different time periods of the day.

In some other embodiments, when the entire area of the second substrate 311' is installed with the light emitting member 312, a light shielding member 324 may be attached to a partial area of the light emitting member 321 to prevent light from leaking out of the partial area of the light emitting member 321, so that the partial area of the light emitting member 321 is in a dark state, simulating the effect of real sunlight shining on the edge of a window or skylight. The light shielding plate can be rotated, and the light shielding member 324 is rotated to change the bright light area on the light emitting member 321, simulating the effect of sunrise and sunset.

The overall structure of the side-light emitting device 300 in this embodiment is simpler, and the second light-emitting module 310' surrounds the outer side of the light-emitting member 321, making assembly more convenient and quick.

Embodiment 3

In this embodiment, the structure of the side light emitting device 300 is basically the same as that of the first embodiment. The side light emitting device 300 emits light only to the side away from the frame 620. The light guide assembly 320 includes a light emitting member 321 and a light guide member 322. The second light emitting module 310 is fixedly connected to one end of the light emitting member 321. The light guide member 322 is arranged around the outside of the light emitting member 321. The upper end surface of the light guide member 322 covers the light emitting member 312 on the second light emitting module 310. The difference is that, as shown in FIG. 9, the light guide member 322 in this embodiment is provided with a V-prism fine structure 3221. The V-prism fine structure 322 21 is located in the area of the light guide 322 far away from the second light-emitting module 310, and the light output member 321 is an inverted V-prism microstructure. After the light is emitted from the light-emitting member 312, the V-prism microstructure 3211 on the light guide 322 destroys its total reflection, so that the light is emitted from the area on the light guide 322 where the V-prism microstructure 3221 is provided at a large angle. The light emitted from the light guide 322 enters the light output member 321 of the inverted V-prism microstructure, and the inverted V-prism microstructure 3221 is utilized to allow part of the light to be emitted at a small angle to the transparent plate 240, and then to form a transparent virtual image 303 through reflection.

Among them, the angles of the backlight surface and the light-facing surface of the V-prism microstructure 3221 at the bottom of the light guide 322 are both less than 6 degrees. At the same time, the angle changes with the distance between the light-emitting component 312 and the light-entering side of the light guide 322, and the depth of the V-groove also changes. For the light-facing surface with an angle of less than 6 degrees, after the light enters from the light-entering side, the angle from the light-emitting surface is in the direction of 165 degrees to 175 degrees. The V-prism microstructure 3221 on the light-emitting side compresses the light to within 30 degrees toward the center. The light of 165 degrees to 175 degrees that comes out can be emitted at a small angle through the inverted V prism on the light-emitting component 321, and the angle is less than 10 degrees. The uniformity of the light-emitting surface of the light guide 322 can be adjusted by adjusting the angles of the light-facing surface and the backlight surface and the depth of the V-groove.

Preferably, the angles of the backlight surface and the frontlight surface of the V-prism in the light guide 322 are both between 0.25 degrees and 0.75 degrees, and the vertex angle of the inverted V-prism in the light output element 321 is between 55 degrees and 70 degrees.

A reflective member 323 is covered on one side of the light guide member 322 away from the light output member 321 to reflect the light emitted to the area inside the light guide member 322 so that the light in the light guide member 322 is emitted toward the light output member 321 .

The lamp 100 also includes a projection system 400, which is disposed between the frame 620 and the side light-emitting device 300 and is at least partially exposed from the frame 620. The projection system 400 is configured to project simulated sunlight spots on a wall or the ground, including circular spots, elliptical spots, or quadrilateral light panels, similar to the projection produced by sunlight passing through a window.

The projection system 400 includes a plurality of projection devices 410 . In the present embodiment, two projection devices 410 are provided. The two projection devices 410 are each movably connected to the frame 620 of the lamp 100 via a connecting piece. The projection devices 410 can rotate relative to the frame 620 .

As shown in FIGS. 10-11 , the projection device 410 includes a light emitting assembly 420, a lens barrel assembly 450 and a lens assembly 430. The light emitting assembly 420 is fixedly connected to the light emitting member 321. The light emitting assembly 420 includes an aluminum substrate 421 and a lamp bead 422 mounted on the aluminum substrate 421. An aperture 440 is disposed on the outer cover of the lamp bead 422. The aperture 440 abuts against the aluminum substrate 421. The aperture 440 is configured to control the intensity and shape of the light beam emitted by the lamp bead 422. A first lens 431 is connected to one end of the aperture 440 away from the lamp bead 422. The first lens 431 is configured to form a light spot. A first lens barrel 451 is sleeved on the outer side of 40 and the first lens 431, the second lens barrel 452 is screwed to one end of the first lens barrel 451 away from the first lens 431, the second lens barrel 432 is embedded in one side of the second lens barrel 452 close to the first lens barrel 451, the end of the second lens barrel 452 away from the first lens barrel 451 is screwed to the third lens barrel 453, and the third lens 433 is embedded in one end of the third lens barrel 453 away from the second lens barrel 452, the second lens 432 and the third lens 433 are configured to perform imaging, and the focal length is adjusted by using the first lens barrel 451, the second lens barrel 452 and the third lens barrel 453.

The first lens 431 and the second lens 432 are plastic lenses, and the third lens 433 is a glass lens. The plastic lens is lighter, which is beneficial to the lightweight of the overall structure, while the glass lens can ensure a higher light transmittance.

In this embodiment, the lamp bead 422 is an LED lamp bead. In other embodiments, it can also be other types of lamp beads, and this application does not limit this.

As shown in FIG12 , the projection direction of the projection system 400 is consistent with the direction of the second light emitting surface 301 , and a light spot is projected on the wall on one side of the partial area to simulate the projection of the real sunlight through the window on the wall.

The lamp 100 further includes a control system, which controls the operation of the surface light-emitting device 200, the side light-emitting device 300 and the projection system 400 to achieve lighting effects for various scenes.

The mounting system 500 includes a mounting bracket, which is fixedly connected to the bottom wall 610, and the lamp 100 is fixedly connected to the mounting surface through the mounting bracket. In this embodiment, the mounting system 500 is a rack-type structure, and in other embodiments, it can also be a quick-connect structure, which is not limited in this application.

In summary, the surface light-emitting device 200 in the lamp 100 of the present application can simulate the effects of the blue sky, sunset, morning light and blue sky and white clouds, and the side light-emitting device 300 simulates the effect of sunlight shining on the edge of the window, making the lighting effect of the lamp 100 more realistic. The side light-emitting device 300 can also form a virtual image on the transparent plate 240 arranged therein, producing a window shadow effect similar to sunlight shining on the edge of the window or skylight, thereby forming a sense of space, depth and layering, and the projection system 400 can provide a light spot similar to sunlight projected onto the ground or wall through a window or skylight, and the shape of the light spot changes according to the overall shape of the lamp 100, which can realize multi-scene applications.

The above embodiments are only used to illustrate the technical solution of the present application and are not intended to limit it. Although the present application has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present application.

Claims (10)

A lamp, comprising: The housing (600) comprises a bottom wall (610) and a frame (620) extending from the bottom wall (610) in a direction away from the bottom wall (610); A surface light-emitting device (200) is arranged on the bottom wall (610) and surrounded by the frame (620), and has a first light-emitting surface (201), wherein the first light-emitting surface (201) simulates sunlight; The projection system (400) comprises at least one projection device (410), wherein the projection device (410) is installed in the frame (620), and the projection device (410) is configured to project a light spot, wherein the shape of the light spot is consistent with the shape of the first light emitting surface (201). The lamp according to claim 1, wherein the spectrum of the surface light-emitting device (200) is similar to the spectrum of sunlight, so that the first light-emitting surface (201) imitates the light of sunlight, or the spectrum of the surface light-emitting device (200) is a white light spectrum, and the surface light-emitting device (200) further includes a diffusion structure (220), wherein the diffusion structure (220) includes nanoparticles to form Rayleigh scattering, so that the first light-emitting surface (201) imitates the light of the blue sky. The lamp according to claim 2, wherein the projection device (410) comprises a light-emitting component (420), a lens barrel component (450) fixedly connected to the light-emitting component (420), and a lens component (430) arranged inside the lens barrel component (450), the lens component (430) being arranged on a light-emitting path of the light-emitting component (420) and configured to adjust a light-emitting angle of the light-emitting component (420), the frame (620) having an opening, and a side of the lens barrel component (450) away from the light-emitting component (420) being exposed to the frame (620) through the opening. The lamp according to claim 3, wherein the lens barrel assembly (450) comprises at least two detachably connected lens barrels, and a lens is correspondingly arranged in each lens barrel. The lamp according to claim 4, wherein the lens barrel assembly (450) comprises a first lens barrel (451), a second lens barrel (452) and a third lens barrel (453) which are detachably connected in sequence, the first lens barrel (451) is connected to the light-emitting assembly (420), the third lens barrel (453) is at least partially exposed outside the frame (620), and the lens assembly (430) comprises a first lens (431) arranged in the first lens barrel (451), a second lens (432) arranged in the second lens barrel (452) and a third lens (433) arranged in the third lens barrel (453). The lamp according to claim 5, wherein the projection device (410) further comprises an aperture (440), wherein the aperture (440) is disposed between the light-emitting component (420) and the first lens (431), and is configured to control the intensity and shape of the light beam projected by the lamp bead (422). The lamp according to claim 1, wherein the projection system (400) comprises a plurality of projection devices (410), and the direction of the output light beam of each projection device (410) in the plurality of projection devices (410) is different. According to the lamp of claim 1, the projection device (410) is movably connected to the frame (620) via a connecting piece, and the projection device (410) can rotate relative to the frame (620) so that the projection device (410) forms a simulated sun spot of a preset shape on the wall or the ground in different directions. The lamp according to claim 8, wherein the preset shape of the simulated sun spot includes at least one of a circular spot, an elliptical spot or a quadrilateral light panel. According to the lamp of claim 1, the surface light-emitting device (200) comprises a first light-emitting module (210), the light emitted by the first light-emitting module (210) is emitted through the first light-emitting surface (201) to form light simulating sunlight, and the simulated sunlight spots formed by the illumination of the light-emitting component (420) in the projection device (410) are distributed on the outer side of the light simulating sunlight formed by the first light-emitting module (210).