Projection lighting system and lamp

Abstract

The utility model provides a projection lighting system and a lamp. The projection illumination system comprises a frame, a projection device, a reflection piece and a light outlet. The projection device is assembled in the frame and is obliquely arranged relative to the horizontal plane. The reflecting piece is assembled on the frame and located in the light emitting direction of the projection device so as to reflect light emitted by the projection device. The light outlet is formed in the side, away from the projection device, of the frame and allows the light reflected by the reflecting piece to be emitted out, and light spots are formed on the ground or the wall face. Wherein at least one of the projection device and the reflecting part is configured to be rotatable, so that the position of the light spot is adjustable. Compared with the prior art, the light emitted by the projection device is reflected to the light outlet through the reflecting piece, so that light spots are formed on the wall surface or the ground, and the light spot effect formed when real sunlight penetrates through a window is simulated. The position of the light spot can be changed by rotating the projection device or the reflecting piece, and then the position of the light spot can be adjusted according to needs, so that the dynamic change of the natural light spot is simulated.

Description

TECHNICAL FIELD

[0001] The utility model relates to lighting technical field especially relates to a projection lighting system and lamps and lanterns. BACKGROUND

[0002] The sky lamp is a kind of flat lamp, and a kind of optical phenomenon of Rayleigh scattering is generated on Rayleigh plate by light source irradiation, blue light can be irradiated to environment when light source is lighted, to simulate the visual effect of blue sky.

[0003] Compared with the existing flat lamp, the sky lamp realizes better lighting effect by Rayleigh scattering, but the existing sky lamp mostly adopts fixed light source and optical system, cannot move like sunlight as the change of sun position, leading to the position and form of light spot keeping unchanged for a long time, lack of dynamic change effect of natural light spot.

[0004] Therefore, it is necessary to provide a projection lighting system and lamps and lanterns to solve the above problems. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a projection lighting system and lamps and lanterns, which can adjust light spot position.

[0006] Therefore, the technical scheme of the utility model provides a projection lighting system, which comprises:

[0007] Frame;

[0008] Projection device, assembled in the frame, and is arranged to be inclined relative to horizontal plane;

[0009] Reflection member, assembled in the frame, and located on the light emitting direction of the projection device, to reflect the light emitted by the projection device;

[0010] Light outlet, arranged on the side of the frame away from the projection device, for the light reflected by the reflection member to emit, to form light spot on ground or wall;

[0011] Wherein, at least one of the projection device and the reflection member is configured to be rotatable, so that the position of the light spot is adjustable.

[0012] Optionally, it further comprises a light blocking member arranged in the frame, and the light blocking member is located between the light outlet and the projection device, to shield the light directly emitted by the projection device.

[0013] Optionally, the reflection member is assembled on the inner side wall of the frame, and the light blocking member is located directly below the projection direction of the reflection member.

[0014] Optionally, the height of the light spot formed on the wall by the projection device is positively correlated with the angle of the projection device relative to the horizontal plane.

[0015] Optionally, the absolute value of the angle of rotation of the projection device is a first angle only when the projection device rotates, and the absolute value of the angle of rotation of the reflector is a second angle only when the reflector rotates, and the first angle is twice the second angle.

[0016] Optionally, the height of the light spot formed on the wall by the projection device is negatively correlated with the angle of forward rotation of the reflector relative to the frame, and the height of the light spot formed on the wall by the projection device is positively correlated with the angle of reverse rotation of the reflector relative to the frame.

[0017] Optionally, the reflector comprises a first end close to the projection device and a second end close to the light outlet, and when the reflector rotates forward relative to the frame, the first end is lower than the second end, and when the reflector rotates reverse relative to the frame, the second end is lower than the first end.

[0018] Optionally, when the angle of inclination of the projection device relative to the horizontal plane becomes smaller and smaller, and the angle of forward rotation of the reflector relative to the frame becomes larger and larger, the height of the light spot formed on the wall by the projection device becomes lower and lower.

[0019] Therefore, the technical scheme of the lamp provided by the utility model also provides a lamp, which comprises a surface light source lighting system and the aforementioned projection lighting system, and the projection lighting system is assembled on the outside of the surface light source lighting system.

[0020] Optionally, the shape of the light spot formed on the wall by the light emitted by the projection lighting system matches the shape of the surface light source emitted by the surface light source lighting system.

[0021] Compared with the prior art, the technical scheme of the embodiment of the utility model has the following beneficial effects:

[0022] The utility model discloses a projection device is set up relative to the horizontal plane is inclined, and the light emitted by it can enter the reflector, and the light emitted by the projection device is reflected to the light outlet by the reflector, so that the light spot can be formed on the wall or the ground, and the light spot effect formed by the real sunlight through the window in the room can be simulated. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is the installation schematic diagram of the lamp in accordance with the preferred embodiment of the utility model;

[0024] Figure 2 It is Figure 1 The structure schematic diagram of the lamp in the embodiment;

[0025] Figure 3 It is Figure 2is a structural schematic view of the lamp from another angle;

[0026] Figure 4 is Figure 2 is a sectional view of the lamp;

[0027] Figure 5 is Figure 2 is an installation explosion view of the lamp;

[0028] Figure 6 is a visual effect diagram of the lamp simulating a blue sky according to the preferred embodiment of the present application;

[0029] Figure 7 is a visual effect diagram of the lamp simulating a blue sky from another angle according to the preferred embodiment of the present application;

[0030] Figure 8 is Figure 6 is a visual effect diagram of the area light source lighting system and the side light emitting lighting system of the lamp simulating white light;

[0031] Figure 9 is Figure 6 is a visual effect diagram of the area light source lighting system and the side light emitting lighting system of the lamp simulating colored light;

[0032] Figure 10 is a structural schematic view of the projection lighting system according to the preferred embodiment of the present application;

[0033] Figure 11 is Figure 10 is an optical path diagram of the projection lighting system;

[0034] Figure 12 is a structural schematic view of the projection device according to the preferred embodiment of the present application;

[0035] Figure 13 is Figure 12 is a structural schematic view of the second lens;

[0036] Figure 14 is Figure 12 is a structural schematic view of the third lens;

[0037] Figure 15 is a size relationship schematic view of the projection device, the reflecting member and the light outlet according to the preferred embodiment of the present application;

[0038] Figure 16 is a relationship schematic view of the installation distance of the lamp, the inclination degree of the projection device and the wall surface light spot size according to the preferred embodiment of the present application;

[0039] Figure 17 is an optical path diagram of the projection device according to the preferred embodiment of the present application;

[0040] Figure 18 is a light path diagram of the third lens according to the preferred embodiment of the present application;

[0041] Figure 19 is a shape diagram of the reflecting member and the light spot according to an embodiment of the present application;

[0042] Figure 20 is a shape diagram of the reflecting member and the light spot according to another embodiment of the present application;

[0043] Figure 21 is a shape diagram of the reflecting member and the light spot according to the preferred embodiment of the present application;

[0044] Figure 22 is a light path diagram of rotating the projection device and the reflecting member in the projection lighting system according to an embodiment of the present application;

[0045] Figure 23 is Figure 22 a simulation structure diagram of the light spot position on the wall corresponding to different inclination angles of the projection device in the projection lighting system;

[0046] Figure 24 is Figure 22 a simulation structure diagram of the light spot position on the wall corresponding to different rotating angles of the reflecting member in the projection lighting system;

[0047] Figure 25 is Figure 22 a simulation structure diagram of the light spot position on the wall corresponding to different rotating angles of the projection device and the reflecting member in the projection lighting system.

[0048] Reference signs:

[0049] frame 1, projection device 2, shell 21, light source module 22, light source 221, light source plate 222, optical module 23, first lens 231, second lens 232, sawtooth structure 2321, third lens 233, base 2331, sub-lens 2332, reflecting member 3, first end 31, second end 32, light outlet 4, light blocking piece 5, light spot 6, projection lighting system 100;

[0050] area light source lighting system 200, main light source plate 201, first multi-color lamp bead 2011, diffusion plate 202, transparent plate 203, main light outlet surface 204;

[0051] side light emitting lighting system 300, auxiliary light source plate 301, second multi-color lamp bead 3011, side light outlet surface 302, virtual image 303;

[0052] lamp 400, lamp shell 401, top wall 4011, frame 4012. DETAILED DESCRIPTION

[0053] In order to make the purpose, technical scheme and advantages of the utility model more clear, the utility model will be described in detail below in combination with the drawings and specific embodiments.

[0054] Here, it needs to be explained that, in order to avoid the utility model from being obscured by unnecessary details, only the structures and / or processing steps closely related to the scheme of the utility model are shown in the drawings, and other details not closely related to the utility model are omitted.

[0055] In addition, it also needs to be explained that the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0056] Please refer to Figures 1 to 25 As shown in the figure, the embodiment of the utility model provides a lamp 400. The lamp 400 includes a projection lighting system 100, a surface light source lighting system 200 and a side light emitting lighting system 300. The surface light source lighting system 200 is configured to simulate sunlight at different times in nature, similar to the sky, various scenes such as blue sky, white clouds and rainbow can be realized. The side light emitting lighting system 300 is arranged outside the surface light source lighting system 200, and the side light emitting lighting system 300 is configured to simulate the effect of sunlight shining on the edge of the skylight. In addition, the side light emitting lighting system 300 can also form a virtual image 303 in the surface light source lighting system 200. The projection lighting system 100 is arranged at the side of the side light emitting lighting system 300 and outside the surface light source lighting system 200, and is configured to form a light spot 6 on the ground or wall.

[0057] Please refer to Figures 1 to 5 As shown in the figure, the lamp 400 includes a lamp housing 401, and the lamp housing 401 includes a top wall 4011 arranged oppositely and a frame 4012 extending away from the top wall 4011. The top wall 4011 is installed on the installation base, and the installation of the lamp 400 is generally completed by fixing the top wall 4011 to the wall or ceiling.

[0058] The surface light source lighting system 200 is installed between the frame 4012 and the top wall 4011. The surface light source lighting system 200 comprises a main light source plate 201, a diffusion plate 202, a transparent plate 203 and a main light exit surface 204 arranged in sequence by height. The main light source plate 201 is installed on the top wall 4011, and a plurality of groups of first multi-color lamp beads 2011 are integrated on the main light source plate 201 to provide a multi-colored surface light source. Specifically, at least two groups of first multi-color lamp beads 2011 are integrated on the main light source plate 201, and the at least two groups of first multi-color lamp beads 2011 can emit light of at least two spectra. The at least two groups of first multi-color lamp beads 2011 are distributed alternately, and adjacent same groups of first multi-color lamp beads 2011 are distributed reversely. Different light effects can be achieved by the first multi-color lamp beads 2011 of different colors, and the alternately distributed different groups of first multi-color lamp beads 2011 and the reversely distributed same groups of first multi-color lamp beads 2011 make the light emitted by the surface light source lighting system 200 more uniform, can simulate the color of sunlight at different times, and achieve the dynamic effect of light. Through the layout and control of the plurality of groups of first multi-color lamp beads 2011 on the main light source plate 201, the surface light source lighting system 200 can accurately simulate and present a plurality of complex surface scenes, such as clouds and blue sky.

[0059] In some embodiments, the first multi-color lamp beads 2011 can emit light of the same color. In other embodiments, the diffusion plate 202 is installed on the side of the main light source plate 201 close to the frame 4012, and the two ends of the diffusion plate 202 abut against the frame 4012. Moreover, the diffusion plate 202 is located on the light exit route of the first multi-color lamp beads 2011, and is used to uniformly emit the light emitted by the first multi-color lamp beads 2011 and eliminate the grainy feeling of the light. Preferably, the diffusion plate 202 is provided with scattering particles (not shown), which are nanoscale titanium dioxide particles in this embodiment, so that part of the light emitted by the first multi-color lamp beads 2011 is Rayleigh scattered in the diffusion plate 202, and a blue color like the sky is presented on the main light exit surface 204, as shown in Figure 6 and Figure 7 .

[0060] The transparent plate 203 is arranged on the side of the diffusion plate 202 away from the first multi-color lamp beads 2011, and the side of the transparent plate 203 away from the diffusion plate 202 is a mirror surface. The light emitted by the side light source lighting system 300 is at least partially projected onto the transparent plate 203, is reflected by the transparent plate 203, and forms a virtual image 303 on the mirror surface to simulate the window shadow effect formed on the window when the side of the window is illuminated by sunlight, so that the human eye has a deep and transparent feeling.

[0061] The mirror surface of the transparent plate 203 has a reflectivity greater than a transmittance to light, so that the light from outside can be limited from entering the transparent plate 203 from the light emitting surface. Alternatively, the material of the transparent plate 203 can be inorganic material, which can be quartz glass. The transparent plate 203 can also be made of organic material, which can be organic glass or other polymer transparent material, and the present application does not limit this.

[0062] The side light emitting illumination system 300 is installed on the frame 4012 and surrounds the main light emitting surface 204 of the surface light source illumination system 200. The side light emitting illumination system 300 has a side light emitting surface 302 attached to the frame 4012 near the side of the main light emitting surface 204. The side light emitting illumination system 300 includes an auxiliary light source plate 301 and a diffusion cover (not shown). The auxiliary light source plate 301 is installed in the frame 4012, and the diffusion cover is installed on the side of the auxiliary light source plate 301 close to the side light emitting surface 302. A plurality of groups of second multi-color lamp beads 3011 are integrated on the auxiliary light source plate 301 for emitting multi-color light. The side light emitting illumination system 300 can simulate a window shadow similar to sunlight shining on the window edge through the second multi-color lamp beads 3011. The diffusion cover is located on the light emitting route of the second multi-color lamp beads 3011. The light emitted by the second multi-color lamp beads 3011 is emitted in a direction away from the frame 4012, and after being diffused by the diffusion cover, a color-variable window shadow is formed on the side light emitting surface 302.

[0063] In some embodiments, the side light emitting illumination system 300 can be installed on one side of the frame 4012, and a light shielding member (not shown) is arranged on the other side of the frame 4012. The side light emitting illumination system 300 further includes a non-light emitting surface (not shown) corresponding to the light shielding member, which is arranged away from the frame 4012, and a light / shadow transition area is formed between the non-light emitting surface and the side light emitting surface 302 to simulate the sunlight shining on one side of the window and forming a dark surface on the other side of the window when the sunlight shines from one side, so that the display effect is more realistic. The side light emitting surface 302 and the non-light emitting surface are connected in a ring shape, and together form a ring-shaped surface around the outer periphery of the main light emitting surface 204. The light / shadow transition area is located at the joint of the side light emitting surface 302 and the non-light emitting surface. The light / shadow transition area is a bright / dark boundary area between the side light emitting surface 302 and the non-light emitting surface, which can be a continuous area from bright to dark, or a clear boundary line.

[0064] As shown in Figure 8 In some embodiments, the first multi-color lamp beads 2011 and the second multi-color lamp beads 3011 both emit white light, and the diffusion plate 202 does not have scattering particles, so that the light emitted from the main light emitting surface 204 is white light, and the window shadow generated by the side light emitting illumination system 300 is also white.

[0065] As shown in Figure 9In some embodiments, the first multi-color light bead 2011 and the second multi-color light bead 3011 both emit light of multiple colors, and the diffusion plate 202 is free of scattering particles, so that the light emitted by the main light-emitting surface 204 is colored light, and the window shadow generated by the side light-emitting lighting system 300 is also colored.

[0066] Referring to Figures 10 to 14 As shown, the projection lighting system 100 is assembled on the side light-emitting lighting system 300 and emits light towards one side of the side light-emitting lighting system 300. The projection lighting system 100 includes a frame 1 and a projection device 2, a reflecting member 3 and a light outlet 4 arranged in the frame 1. The projection device 2 is assembled on one side of the frame 1 and is arranged obliquely relative to the horizontal plane for emitting light. The reflecting member 3 is arranged on the inner side wall of the top of the frame 1 and is located in the light-emitting direction of the projection device 2 for reflecting the light emitted by the projection device 2. In this embodiment, the reflecting member 3 is a mirror. The light outlet 4 is arranged on the side wall of the frame 1 and is located on the side of the frame 1 away from the projection device 2, and the light outlet 4 is directed towards the side light-emitting lighting system 300. The projection lighting system 100 is used to simulate the light spot 6, i.e. the shadow of the sun, formed by the sunlight passing through the window. Specifically, the light emitted by the projection device 2 is reflected by the reflecting member 3 and then emitted from the light outlet 4 to form a light spot 6 on the ground or wall surface which matches the shape of the area light emitted by the area light-emitting lighting system 200. Moreover, the position of the light spot 6 and the formation position of the window shadow are located on the same side of the lamp 400.

[0067] In order to prevent the light emitted by the projection device 2 from being directly emitted from the light outlet 4 to form stray light on the light spot 6 and affect the clear cut-off line of the light spot 6, the projection lighting system 100 further includes a light-blocking member 5 arranged in the frame 1, which is located between the light outlet 4 and the projection device 2 and is configured to block the direct light of the projection device 2. The light-blocking plate is black and can absorb the direct light of the projection device 2, effectively avoiding the influence of stray light on the clarity of the light spot 6.

[0068] In some preferred embodiments, the light-blocking member 5 is located directly below the projection direction of the reflecting member 3 to maximize the proportion of the light emitted by the projection device 2 which is reflected by the light-blocking member 5 and then emitted from the light outlet 4. The light-blocking member 5 can effectively prevent direct light from being emitted from the light outlet 4, thereby playing a role of light cutting, filtering stray light beyond the set area and ensuring the clear cut-off line of the light spot 6.

[0069] The inner surface of the frame 1 tends to reflect light, producing stray light. Further, in order to prevent the stray light generated inside the frame 1 from being emitted from the light outlet 4, thereby affecting the clear cutoff line of the light spot 6, the inner surface of the frame 1 is black. Specifically: the frame 1 can be made of black material, or the inner surface of the frame 1 can be covered with a black light-absorbing film layer, or the inner surface of the frame 1 can be sprayed with a black coating (not shown), and the light-absorbing film layer / black coating does not cover the reflecting member 3, so as to ensure that the reflecting member 3 normally reflects light. The light-absorbing film layer / black coating absorbs the reflected light of the inner surface of the frame 1, so that only the light reflected by the reflecting member 3 can be emitted from the light outlet 4, effectively filtering stray light, so as to form a clear light spot 6 on the ground or wall, so that the light spot 6 has a more distinct and clear cutoff line.

[0070] Specifically, the projection device 2 includes a housing 21 and a light source module 22 assembled in the housing 21. The light source module 22 includes a light source plate 222 and a light source 221 fixed on the light source plate 222. In this embodiment, the light source plate 222 is an aluminum substrate, and the light source 221 is an LED. The light source 221 is used to emit light, part of which is absorbed by the light-blocking piece 5; part of which is reflected by the reflecting member 3 to the light outlet 4.

[0071] The projection device 2 further includes an optical module 23 assembled in the housing 21, and the optical module 23 is arranged opposite to the light source module 22. The optical module 23 includes a first lens 231, a second lens 232 and a third lens 233 arranged in sequence in the light outlet direction of the light source module 22. The first lens 231 is assembled to the light source plate 222 and covers the outside of the light source 221, and the first lens 231 is configured to compress the light outlet angle of the light source module 22. The side of the first lens 231 away from the light source 221 (i.e. the light outlet surface) is a convex structure, which can refract the light emitted by the light source 221. The convex structure can be a hemispherical structure or an ellipsoidal structure, so that the light emitted by the light source 221 can be refracted twice through the light inlet surface and the light outlet surface of the first lens 231, achieving the purpose of compressing the light outlet angle of the light. That is, the light source 221 focuses the beam shaping through the first lens 231 to converge the light. Preferably, the light outlet angle of the light emitted by the light source 221 is usually 105° to 135°, but the light outlet angle of the light emitted after the first lens 231 is 35° to 55°, effectively improving the utilization rate of the light, and more light can be emitted into the second lens 232.

[0072] In some embodiments, the light source 221 is a lamp bead. Since the lamp bead generates high heat when working, and the first lens 231 is close to the light source 221, the first lens 231 needs to have good temperature resistance. In order to meet this requirement, the first lens 231 is made of high-temperature-resistant materials such as silica gel or glass. In this way, the first lens 231 remains stable in a high-temperature working environment, ensuring the converging function of the first lens 231 and protecting the light-emitting angle of the light source 221.

[0073] Preferably, when the light source 221 is a high-power LED, the light source module 22 further comprises a heat sink (not shown) for rapid heat dissipation to ensure the normal work of the light source 221.

[0074] The second lens 232 is configured to collimate the light emitted by the first lens 231 to simulate parallel sunlight. In this embodiment, the second lens 232 is a Fresnel lens, and the light-emitting surface of the Fresnel lens is a sawtooth structure 2321, as shown in FIG. 2B. Figure 13 The light emitted by the first lens 231 enters the Fresnel lens and is collimated from the sawtooth structure 2321.

[0075] The sawtooth structure 2321 includes a plurality of arranged sawteeth. In some embodiments, the tooth height of each sawtooth is equal, the width of the sawtooth closer to the center of the light-emitting surface of the second lens 232 is larger, and the interval between the adjacent two sawteeth is also larger. Correspondingly, the width of the sawtooth closer to the end of the second lens 232 is smaller, and the interval between the adjacent two sawteeth is also smaller.

[0076] In other embodiments, the width of each sawtooth is equal, and the tooth height of the sawtooth closer to the center of the light-emitting surface is smaller. Correspondingly, the tooth height of the sawtooth closer to the end of the second lens 232 is larger.

[0077] Further, the second lens 232 is fixed above the first lens 231 and maintains a certain distance from the first lens 231, providing a certain installation and manufacturing tolerance. In some embodiments, the focal length of the second lens 232 is defined as f, and the distance between the second lens 232 and the first lens 231 is f±10mm.

[0078] In some preferred embodiments, the distance between the second lens 232 and the first lens 231 is f±7mm, which can minimize the loss of light in the transmission process and make the light compressed by the first lens 231 collimate from the second lens 232. That is, the light is emitted in the form of nearly parallel light, simulating the effect of sunlight. Because the distance between the sun and the earth is very far, the light irradiated to the ground is approximately parallel light.

[0079] In some preferred embodiments, the second lens 232 can be made of transparent optical materials such as PMMC, PC, and silica gel, without limitation.

[0080] The third lens 233 is used to shape the light emitted by the second lens 232, so as to form a light spot 6 with a preset shape. In order to ensure the visual effect, the shape of the light spot 6 needs to be adapted to the shape of the surface light source lighting system 200. In the present embodiment, the third lens 233 is a compound eye lens, which includes a base body 2331 and a plurality of sub-lenses 2332 arranged in an array on one side of the base body 2331, as shown in Figure 14 Each sub-lens 2332 can independently adjust the light, thereby achieving accurate control of the light as a whole. Moreover, the cross-sectional shape of the sub-lens 2332 in the horizontal direction is the same as the shape of the light spot 6 formed. This characteristic enables the third lens 233 to shape the light into various light spots 6 with preset shapes as needed, thereby meeting the needs of the surface light source lighting system 200 for different shapes of light spots 6. Therefore, by selecting a corresponding compound eye lens, a light spot 6 with a shape adapted to the surface light source lighting system 200 can be emitted. Preferably, the shape of the light spot 6 formed on the wall by the light emitted by the projection lighting system 100 matches the shape of the surface light source emitted by the surface light source lighting system 200. For example, the light spot 6 of the square lamp 400 is square, and the light spot 6 of the circular lamp 400 is circular.

[0081] Please refer to Figure 15 to explore the correlation between the size of the projection device 2, the size of the reflecting member 3, and the size of the light outlet 4. Define the height of the projection device 2 as H, the width of the projection device 2 as L, the height of the frame 1 as HH, the width of the frame 1 as LL, the width of the reflecting member 3 as LW, the angle of inclination of the projection device 2 relative to the horizontal plane as θ, i.e. the angle of inclination of the installation of the projection device 2 as θ, the light outlet angle of the compound eye lens as β, the shortest distance between the top surface of the frame 1 and the projection device 2 as a; on the extension line of a, the distance between the optical module 23 and the bottom surface of the frame 1 is c; a, b, and c are collinear on the same height line, the distance between a and c is b, and the sum of a, b, and c is the height inside the frame 1, the distance between the light rays emitted by the projection device 2 farthest from the bottom surface of the frame 1 and the parallel light axis of the light rays emitted by the projection device 2 farthest from the bottom surface of the frame 1 passing through the compound eye lens and the reflecting member 3 is δLL, the distance between the light rays emitted by the projection device 2 closest to the bottom surface of the frame 1 and the parallel light rays emitted by the projection device 2 closest to the bottom surface of the frame 1 passing through the compound eye lens and the reflecting member 3 is δLR, in actual application, δLR>δLL; the distance between the parallel light axis of the light rays emitted by the projection device 2 farthest from the bottom surface of the frame 1 and the parallel light axis of the light rays emitted by the projection device 2 closest to the bottom surface of the frame 1 passing through the reflecting member 3 is L1, the distance between the light blocking member 5 and the reflecting member 3 in height is H1; then:

[0082] c = H * cos θ;

[0083] b = L * sin θ;

[0084] a = H - b - c = H - L * sin θ - H * cos θ;

[0085] δLL = H - L * sin θ - H * cos θ * tan θ - tan θ - β;

[0086] L1 = L / cos θ;

[0087] δLR = H - H * cos θ * tan θ + β - tan θ;

[0088] Therefore, the width of the reflecting member 3 is: LW = δLL + L1 + δLR = H - L * sin θ - H * cos θ * tan θ - tan θ - β + L / cos θ + H - H * cos θ * tan θ + β - tan θ.

[0089] From the above formula, it can be seen that the width of the reflecting member 3 is only related to the height H of the frame 1, the width L of the projection device 2, the light-emitting angle β of the compound eye lens, and the inclination angle θ of the installation of the projection device 2.

[0090] H1 = LW / (sin (θ + β) / cos (θ + β) + sin (β - θ) / cos (β - θ));

[0091] Therefore, the height of the light barrier is: HH - H1 = HH - LW / (sin (θ + β) / cos (θ + β) + sin (β - θ) / cos (β - θ)) = HH - H - L * sin θ - H * cos θ * tan θ - tan θ - β + L / cos θ + H - H * cos θ * tan θ + β - tan θ / (sin (θ + β) / cos (θ + β) + sin (β - θ) / cos (β - θ)).

[0092] Therefore, the height of the light barrier is only related to the height H of the frame 1, the width L of the projection device 2, the light-emitting angle β of the compound eye lens, and the inclination angle θ of the installation of the projection device 2.

[0093] In some embodiments, the height of the light barrier 5 can be lower than the height of the light-emitting port 4, and at this time, part of the stray light will be emitted from the light-emitting port 4, affecting the clarity of the light spot 6.

[0094] In a preferred embodiment, the height of the light blocking member 5 is equal to the height of the light exit 4, which can maximize the light blocking effect of the light blocking member 5, effectively block the light directly emitted from the projection device 2 through the light exit 4, significantly reduce the influence of stray light on the light spot 6, and thus form a clearly defined light spot 6 on the ground or wall. Similarly, it can be obtained that the height H3 of the light exit 4 is only related to the height HH of the frame 1, the width L of the projection device 2, the light exit angle β of the fly-eye lens, and the inclination angle θ of the projection device 2.

[0095] Please refer to Figures 16-17 As shown, define the installation distance as La, the lens light exit angle as β, the angle of inclination of the projection device 2 relative to the horizontal plane as θ, define the angle between the optical axis and the horizontal plane as γ, and, θ and γ are complementary angles, θ + γ = 90°.

[0096] The height of the light spot 6 on the wall is W, the projection length of the wall light spot 6 in the direction perpendicular to the optical axis is Wa, the optical path is Lb, the distance between the intersection point of the light spot 6 and the optical axis and the virtual image 303 is Lc, and the width of the projection device 2 is L.

[0097] Wa = W * cosγ; ①

[0098] Lb = La / cosγ; ②

[0099] Lc = Lb - 0.5 * W * sinγ; ③

[0100] Wa = L + 2 * Lc * tanβ; ④ <0​​​​​​​​​​​​​​​​​​​​​Formula ⑧ illustrates the relationship between the installation distance La, the light emission angle β of the compound eye lens, and the height W of the light spot 6 on the wall. Therefore, the design and installation must satisfy this relationship. The remaining unknown term can be calculated from any two of the installation distance La, the light emission angle β of the compound eye lens, and the height W of the light spot 6 on the wall, to guide the installation. For example, the required installation distance La can be calculated based on the light emission angle β of the compound eye lens and the height W of the light spot 6 on the wall.

[0109] From formula ⑧, we know that: β=Atn((W*sinθ) / (2*La / sinθ-0.5*W*cosθ)).

[0110] Please see Figure 17 As shown, the angle of light after passing through the compound eye lens is defined as β. Given the width W of the light spot 6 to be illuminated, the installation distance La of the lamp 400, and the tilt angle θ of the projection device 2, the exit angle β of the projection device 2 after passing through the compound eye lens can be calculated (before passing through the compound eye lens, the light is approximately parallel).

[0111] Similarly, based on the installation conditions and the size requirements of the light spot 6, the angle of the light emitted from the projection device 2 in any direction after passing through the compound eye lens can be calculated. Please refer to [link / reference]. Figure 16 As shown, where β is the angle of the ray after passing through the compound eye lens; n is the refractive index of the compound eye lens, and n' is the refractive index of air; u and u' are the angle of incidence and the angle of exit, respectively. Therefore, according to Snell's theorem,

[0112] n*sinu=n'*sinu';

[0113] u' = u + β;

[0114] From the above formula, we can obtain: n*sinu=n'*sinu+β.

[0115] Given β, n, and n', u can be calculated. The surface shape of the sub-lens 2332 in the compound eye lens can be obtained through iterative algorithm. Then, the compound eye lens can be obtained by arranging them.

[0116] In some embodiments, the compound eye lens may not be provided, and the shape of the light spot 6 may be changed by altering the shape of the reflector 3. For example, when the projection device 2 forms a trapezoidal light spot 6, the shape of the light spot 6 can be adjusted from a trapezoid to a rectangle by assembling an inverted trapezoidal reflector 3.

[0117] Please see Figure 19 As shown, when the projection of the reflector 3 onto the horizontal plane is rectangular, the light spot 6 projected by the projection lighting system 100 is an inverted trapezoid.

[0118] Please see Figure 20As shown in the figure, the projection of the reflector 3 on the horizontal plane is isosceles trapezoid, and when the two inner angles of the isosceles trapezoid are between 92.5-95°, the light spot 6 projected by the projection lighting system 100 is trapezoidal.

[0119] As shown in the figure, the projection of the reflector 3 on the horizontal plane is isosceles trapezoid, and when the two inner angles of the isosceles trapezoid are between 92.5-95°, the light spot 6 projected by the projection lighting system 100 is trapezoidal. Figure 19 As shown in the figure, the projection of the reflector 3 on the horizontal plane is isosceles trapezoid, and when the two inner angles of the isosceles trapezoid are between 92.5-95°, the light spot 6 projected by the projection lighting system 100 is trapezoidal.

[0120] The angle of sunlight at different times relative to the window is different, that is, the position of the light spot 6 on the wall or the ground changes through the window, so the designed light spot 6 needs to change with time. In order to simulate the light spot 6 formed by the sun at different times, the lamp 400 is also provided with a driving device, which rotates the projection device 2 or the reflector 3 within a certain angle through the driving device to adjust the position of the light spot 6 on the ground or the wall.

[0121] The driving device of the embodiment is not shown in the figure, and the driving device can be composed of a motor and a connecting rod. The motor drives the connecting rod to rotate, and the output end of the connecting rod is connected with the projection device 2 or the reflector 3, so that the connecting rod drives the projection device 2 or the reflector 3 to rotate. The driving device is not limited to the structure disclosed in the utility model, and the connecting rod driving structure can be modified according to different use scenarios.

[0122] As shown in the figure, the projection of the reflector 3 on the horizontal plane is isosceles trapezoid, and when the two inner angles of the isosceles trapezoid are between 92.5-95°, the light spot 6 projected by the projection lighting system 100 is trapezoidal. Figure 22 As shown in the figure, the projection of the reflector 3 on the horizontal plane is isosceles trapezoid, and when the two inner angles of the isosceles trapezoid are between 92.5-95°, the light spot 6 projected by the projection lighting system 100 is trapezoidal.

[0123] Further, at the same light spot 6 position, only when the projection device 2 rotates, the absolute value of the rotation angle of the projection device 2 is a first angle, and only when the reflector 3 rotates, the absolute value of the rotation angle of the reflector 3 is a second angle, and the first angle is twice the second angle.

[0124] In some embodiments, the reflector 3 remains stationary, typically by placing the reflector 3 flat. The position of the light spot 6 on the ground or wall is adjusted by rotating the projection device 2 and controlling the angle of inclination of the projection device 2 relative to the horizontal plane to be an acute angle.

[0125] Please see Figure 23 As shown, when the projection device 2 is tilted at an angle of 70° relative to the horizontal plane, the wall spot 6 formed by the projection lighting system 100 is located at the top of the wall. When the projection device 2 is tilted at an angle of 60° relative to the horizontal plane, the wall spot 6 formed by the projection lighting system 100 is located in the middle of the wall. When the projection device 2 is tilted at an angle of 50° relative to the horizontal plane, the wall spot 6 formed by the projection lighting system 100 is located at the bottom of the wall. According to the simulation results of the movement of the wall spot 6, the height of the wall spot 6 formed by the projection device 2 is positively correlated with the tilt angle of the projection device 2 relative to the horizontal plane. Similarly, it can be concluded that the distance between the wall spot 6 formed by the projection device 2 on the ground and the projection device 2 is negatively correlated with the tilt angle of the projection device 2 relative to the horizontal plane.

[0126] Please see Figure 23 As shown in the simulation results of the wall light spot 6's position movement, it can be seen that as the angle θ decreases, the wall light spot 6 moves downwards, similar to the sun's gradual change from morning to near noon. When θ = 70°, light spot 6 resembles the sun's light spot 6 at 7 AM; when θ = 60°, light spot 6 resembles the sun's light spot 6 at 9 AM; and when θ = 50°, light spot 6 resembles the sun's light spot 6 at 11 AM. Similarly, rotating the projection device 2 in the opposite direction increases the angle θ, causing the wall light spot 6 to move upwards, similar to the change in light spot 6 as the sun gradually changes from noon to near dusk. Therefore, the position of light spot 6 can be adjusted by rotating the reflector 3 to simulate the light spot 6 produced by natural light at different times. The lamp 400 is equipped with a control system that can control the rotation angle of the reflector 3 according to biological rhythms to obtain the light spot 6 at the corresponding time.

[0127] In some embodiments, the control system can automatically adjust the rotation angle of the reflector 3 or the projection device 2 according to biological rhythms, thereby precisely controlling the position of the light spot 6, so that the light spot 6 generated by the projection lighting system 100 is highly similar to the light spot 6 generated by outdoor sunlight, creating a realistic and natural light environment experience for users.

[0128] In some other embodiments, the user can also select the visual effect of the light spot 6 at different time through the program, and the control system drives the reflecting member 3 or the projection device 2 to rotate to the corresponding angle to project the light spot 6. In addition, the control system can also control the power of the light source module 22, so that the user can adjust the position or brightness of the light spot 6 according to personal preferences or needs to meet diversified use requirements. In this way, the user can enjoy the visual effect of the natural light spot 6 at different time in the room.

[0129] In some other embodiments, the projection device 2 maintains the same inclination angle, and the position of the light spot 6 on the ground or the wall is adjusted by rotating the reflecting member 3 through the driving device.

[0130] Preferably, the reflecting member 3 is rotated forward or backward around the center of the reflecting member 3 as the rotation axis, and the angle of the reflecting member 3 relative to the frame 1 is an acute angle. The distance between the reflecting member 3 and the top surface of the frame 1 is 20 mm. The reflecting member 3 includes a first end 31 close to the projection device 2 and a second end 32 close to the light outlet 4. When the reflecting member 3 is rotated forward relative to the frame 1, the first end 31 is lower than the second end 32, and when the reflecting member 3 is rotated backward relative to the frame 1, the second end 32 is lower than the first end 31.

[0131] Please refer to Figure 24 As shown in the figure, when the reflecting member 3 is placed flat, the wall light spot 6 formed by the projection lighting system 100 can be seen to be in the middle of the wall. When the reflecting member 3 is rotated forward by 5° relative to the frame 1, i.e. α = 5°, the wall light spot 6 formed by the projection lighting system 100 can be seen to be at the bottom of the wall. According to the simulation results of the position movement of the wall light spot 6, the height of the light spot 6 formed on the wall by the projection device 2 is negatively correlated with the angle of the reflecting member 3 rotated forward relative to the frame 1.

[0132] Please refer to Figure 24 As shown in the figure, when the reflecting member 3 is placed flat, the wall light spot 6 formed by the projection lighting system 100 can be seen to be in the middle of the wall. When the reflecting member 3 is rotated backward by 5° relative to the frame 1, i.e. α = -5°, the wall light spot 6 formed by the projection lighting system 100 can be seen to be at the top of the wall. According to the simulation results of the position movement of the wall light spot 6, the height of the light spot 6 formed on the wall by the projection device 2 is positively correlated with the angle of the reflecting member 3 rotated backward relative to the frame 1.

[0133] Please refer to Figure 24 As shown in the figure, the position of the light spot 6 on the ground or the wall is adjusted by rotating the reflecting member 3. From Figure 22As can be seen from the figure, the angle a gradually increases from a negative angle to a positive angle, and the wall light spot 6 moves downward. It is similar to the slow change of the sun from the morning to near noon. When a = -5°, the light spot 6 is similar to the light spot 6 irradiated by the sun at 7 o'clock in the morning; when a = 0°, the light spot 6 is similar to the light spot 6 irradiated by the sun at 9 o'clock in the morning; and when a = 5°, the light spot 6 is similar to the light spot 6 irradiated by the sun at 11 o'clock in the morning. Therefore, the position of the light spot 6 can be adjusted by rotating the reflecting member 3 to simulate the light spot 6 generated by natural light at different times. The lamp 400 is provided with a control system, which can control the rotation angle of the reflecting member 3 according to the biological rhythm to obtain the light spot 6 at the corresponding time.

[0134] In some embodiments, referring to Figure 25 As shown, the position of the light spot 6 on the ground or the wall is adjusted by simultaneously rotating the reflecting member 3 and the projection device 2. In this way, the required rotation angle range of the reflecting member 3 and the projection device 2 is small, thereby reducing the overall size of the projection device 2. From Figure 23 As can be seen from the figure, the light spot 6 simulates the slow change of the sun from the morning to near noon. When θ = 65° and a = -2.5°, the light spot 6 is similar to the light spot 6 irradiated by the sun at 7 o'clock in the morning; when θ = 62° and a = 1°, the light spot 6 is similar to the light spot 6 irradiated by the sun at 9 o'clock in the morning; and when θ = 55° and a = 2.5°, the light spot 6 is similar to the light spot 6 irradiated by the sun at 11 o'clock in the morning. As can be seen, when the angle of the projection device 2 relative to the horizontal plane becomes smaller and smaller, and the angle of the reflecting member 3 relative to the frame 1 becomes larger and larger, the height of the light spot 6 formed on the wall by the projection device 2 becomes lower and lower. Therefore, the position of the light spot 6 can be adjusted by rotating the reflecting member 3 and the projection device 2 to simulate the light spot 6 formed on the wall or the ground by the sun passing through the window at different times. The lamp 400 is provided with a control system, which can control the rotation angle of the reflecting member 3 according to the biological rhythm to obtain the light spot 6 at the corresponding time.

[0135] In summary, the projection device 2 is arranged to be inclined relative to the horizontal plane, so that the light emitted thereby can enter the reflecting member 3, and the light emitted by the projection device 2 is reflected by the reflecting member 3 to the light outlet 4, so that a light spot can be formed on the wall or the ground, simulating the light spot effect formed by the real sunlight passing through the window in the room. In addition, rotating at least one of the projection device 2 and the reflecting member 3 can change the position of the light spot 6, and then the position of the light spot 6 can be adjusted as needed, so that the dynamic change of the natural light spot with the change of the sun position can be simulated.

[0136] The above examples are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. A projection lighting system, characterized in that, include: Framework (1); The projection device (2) is assembled inside the frame (1) and is inclined relative to the horizontal plane; A reflector (3) is assembled on the frame (1) and located in the light-emitting direction of the projection device (2) to reflect the light emitted by the projection device (2); The light outlet (4) is located on the side of the frame (1) away from the projection device (2) so that the light reflected by the reflector (3) can be emitted to form a light spot (6) on the ground or wall. At least one of the projection device (2) and the reflector (3) is configured to be rotatable, so that the position of the light spot (6) is adjustable.

2. The projection lighting system according to claim 1, characterized in that, It also includes a light-blocking member (5) disposed within the frame (1), the light-blocking member (5) being located between the light outlet (4) and the projection device (2) to block the light emitted directly from the projection device (2).

3. The projection lighting system according to claim 2, characterized in that, The reflector (3) is mounted on the inner wall of the frame (1), and the light-blocking member (5) is located directly below the projection direction of the reflector (3).

4. The projection lighting system according to claim 1, characterized in that, The height of the light spot (6) formed by the projection device (2) on the wall is positively correlated with the angle of inclination of the projection device (2) relative to the horizontal plane.

5. The projection lighting system according to claim 1, characterized in that, At the same spot (6) position, when only the projection device (2) rotates, the absolute value of the angle of rotation of the projection device (2) is the first angle, and when only the reflector (3) rotates, the absolute value of the angle of rotation of the reflector (3) is the second angle, and the first angle is twice the second angle.

6. The projection lighting system according to claim 1, characterized in that, The height of the light spot (6) formed by the projection device (2) on the wall is negatively correlated with the angle of positive rotation of the reflector (3) relative to the frame (1), and the height of the light spot (6) formed by the projection device (2) on the wall is positively correlated with the angle of reverse rotation of the reflector (3) relative to the frame (1).

7. The projection lighting system according to claim 6, characterized in that, The reflector (3) includes a first end (31) near the projection device (2) and a second end (32) near the light outlet (4). When the reflector (3) rotates forward relative to the frame (1), the first end (31) is lower than the second end (32). When the reflector (3) rotates in the opposite direction relative to the frame (1), the second end (32) is lower than the first end (31).

8. The projection lighting system according to claim 1, characterized in that, As the angle of inclination of the projection device (2) relative to the horizontal plane becomes smaller and smaller, and the angle of positive rotation of the reflector (3) relative to the frame (1) becomes larger and larger, the height of the light spot (6) formed by the projection device (2) on the wall becomes lower and lower.

9. A lamp, characterized in that, It includes a surface light source illumination system (200) and a projection illumination system (100) as described in any one of claims 1 to 8, wherein the projection illumination system (100) is mounted on the outside of the surface light source illumination system (200).

10. The lamp according to claim 9, characterized in that, The shape of the light spot (6) formed on the wall by the light emitted by the projection lighting system (100) matches the shape of the surface light source emitted by the surface light source lighting system (200).

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