A device for simulating skylight environment with a side-reflecting optical structure

Abstract

The present invention belongs to the technical field of simulated skylights, and discloses a device for simulating a skylight environment with a side-reflecting optical structure, including a light source, an outer cover and a guard frame, wherein four light sources are provided and are respectively fixedly installed at four side edges of the inner side of the guard frame, and the guard frame is fixedly installed at the bottom of the outer cover, and an upper reflector and a side reflector are fixedly installed inside the outer cover. The present invention arranges a light source with an adjustable angle between the light-emitting surface and the horizontal plane inside the light chamber, and each of the four sides of the rectangular light chamber is provided with one light source, and the light emitted by the light source is reflected by the upper reflector and the side reflector, and irradiated on the light-homogenizing plate, so that the light originally unevenly haloed locally is homogenized, and diffusely reflected and scattered through the light-transmitting plate to form a uniform surface light source for ambient lighting, and the angle between the light-emitting surface of the light source and the horizontal plane is adjusted to simulate the distribution of background light intensity at different positions in the sky, thereby improving authenticity.

Description

Technical Field

[0001] The invention belongs to the technical field of simulated skylights, and in particular relates to a device for simulating a skylight environment with a side-reflective optical structure. Background Art

[0002] A simulated skylight is an optical device that imitates the effect of a skylight under natural light. This device can simulate the effect of sunlight shining into a closed room, allowing people to experience the outdoor sunshine, see the white clouds and blue sky in an actual closed room, which helps to soothe and relax people's tense mood.

[0003] Currently, the technology that can simulate sunlight and sky background light is mainly nanoparticle coating scattering technology. Nanoparticle coating is coated on the surface of optical materials to form a nanoparticle coating. The nanoparticle coating is illuminated by a mixed light source, causing the mixed light and nanoparticles to produce Rayleigh scattering to form the sky background blue light. The transmittance of the mixed light is controlled by controlling the thickness of the nanoparticle coating to achieve the sunlight lighting effect. This technology is difficult and costly, and the product production process is complicated.

[0004] The present invention replaces the complex process and technology of Rayleigh scattering with a side-reflecting optical structure, realizes the sky light scattering effect of simulating a skylight through a relatively simple technology, and can actively realize the starry sky background at night based on the simulated sky light. Summary of the invention

[0005] The object of the present invention is to provide a device for simulating a skylight environment with a side-reflective optical structure, so as to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a device for simulating a skylight environment with a side-reflecting optical structure, comprising a light source, an outer cover and a protective frame, wherein a total of four light sources are provided and are respectively fixedly installed at four side edges inside the protective frame, the protective frame is fixedly installed at the bottom of the outer cover, an upper reflector and side reflectors are fixedly installed inside the outer cover, the upper reflector is fixedly installed at the top of the inner cavity of the outer cover, a total of four side reflectors are provided and are respectively fixedly installed on four inner side surfaces of the outer cover, the side reflectors and the upper reflectors together constitute a light chamber, and a light-diffusing plate and a light-transmitting plate are stacked from top to bottom in the middle of the protective frame.

[0007] Preferably, both symmetrical outer sides of the guard frame are equipped with a storage chamber and a stepper motor, and a curtain drum and a rope winding column are movably installed in the two storage chambers respectively, and the surfaces of the curtain drum and the rope winding column are respectively wound with a starry sky curtain and a traction rope, and the starry sky curtain is connected to the traction rope, and the stepper motor is fixedly installed on the outside of the storage chamber and is transmission connected to the curtain drum and the rope winding column in the inner cavity of the storage chamber, and a pressure strip is fixedly installed on the bottom of the guard frame, and the pressure strip presses the starry sky curtain against the bottom surface of the guard frame, and a clamping plate is clamped between the pressure strip and the outer cover.

[0008] Preferably, the light sources are all arranged between the light-emitting plate and the side reflector on their corresponding sides, and the angle θ between the light-emitting surfaces of the four light sources and the horizontal plane is adjustable. The normal perpendicular to the light-emitting surface of the light source is defined as 0°, the clockwise direction is +90°, and the counterclockwise direction is -90°. By adjusting the angle θ between the light source and the horizontal plane, the illumination distribution on the light-emitting plate can be changed. The light source adopts but is not limited to the scattered light RG, the second light trap B, the initial light W, and the LE fourth light trap D of the four-color chip.

[0009] Preferably, the light source emits an initial light W which is reflected by the upper reflector or the side reflector for the first time to form a primary reflected light F, and the primary reflected light F is reflected by the upper reflector or the side reflector to form a secondary reflected light T. Any light in the light chamber is emitted to the external environment through the light homogenizing plate and the light-transmitting plate to form a scattered light R. Fig.11 The corresponding Fig.10 The distribution curve of the luminous intensity at the luminous angle of the light source in the middle. The horizontal axis of the curve is the luminous angle of the light source, from -90° to +90°; the vertical axis of the curve is the luminous intensity value, which is based on the maximum luminous intensity of 100%. From this curve, it can be seen that the relationship between the luminous angle of the light source and the luminous flux is:

[0010]

[0011] Φ is the luminous flux of the light source; I is the luminous intensity of the light source; α is the angle between the initial light W and the normal.

[0012] The above formula shows that the relationship between luminous flux and luminous angle is a cosine curve relationship. The closer the luminous angle is to 0°, the greater the luminous flux. The greater the luminous flux, the stronger the irradiated light, the stronger the light falling on the reflector or homogenizer, and the brighter the reflector or homogenizer in this area.

[0013] Preferably, the areas where the four light sources are located are shielded by the light source body to form the first light trap A, the second light trap B, the third light trap C and the fourth light trap D which cannot reflect light. The light emitted by the light source may shine into any light trap area after being reflected by the upper reflector or the side reflector. The light entering the light trap area is absorbed and is no longer reflected outward.

[0014] Preferably, a strip groove is provided at the bottom of the inner side of the storage room for the starry sky curtain or the traction rope to pass through, and the length of the strip groove is adapted to the width of the starry sky curtain.

[0015] Preferably, the edge pressing strip presses the starry sky curtain in a posture parallel to the extension direction of the starry sky curtain, and the traction rope is located between the edge pressing strip and the guard frame. The edge pressing strip presses the starry sky curtain mainly for the posture of the starry sky curtain, preventing wrinkles on the surface of the starry sky curtain and ensuring the light transmission quality.

[0016] Preferably, the front end of the edge pressing strip is provided with a downwardly bent lower edge end, and the starry sky curtain is inserted between the edge pressing strip and the guard frame through the lower edge end. The lower edge end is to ensure that the starry sky curtain can be inserted between the pallet and the guard frame smoothly. The tail end of the edge pressing strip is provided with a through hole for the traction rope to pass through. On the one hand, the through hole facilitates the passage of the traction rope during the transmission process, and on the other hand, it can stabilize the posture of the traction rope to prevent it from deflecting.

[0017] Preferably, the outer shape of the card plate is "["-shaped, and the card plate is clamped on the rear side of the lower edge of the edge strip. Since the fixing part of the edge strip and the guard frame is at the tail end of the edge strip, the length of the edge strip is relatively long, which will cause the lower edge of the edge strip to fall due to gravity, resulting in insufficient pressure applied by its lower edge and front part on the edge strip. Therefore, the pressure on the card plate is compensated by clamping the card plate on the lower edge of the edge strip.

[0018] The beneficial effects of the present invention are as follows:

[0019] 1. The present invention arranges a light source with an adjustable angle between the light-emitting surface and the horizontal plane inside the light chamber, and each of the four sides of the rectangular light chamber is provided with one light source. The light emitted by the light source is reflected by the upper reflector and the side reflector, and irradiated on the light-homogenizing plate, so that the originally locally uneven light is evened out, and diffusely reflected and scattered through the light-transmitting plate to form a uniform surface light source for ambient lighting. The angle between the light-emitting surface of the light source and the horizontal plane is adjusted to simulate the distribution of background light intensity at different positions in the sky, thereby improving authenticity. The present invention replaces the complex process technology and expensive cost of traditional Rayleigh scattering with the above-mentioned side-reflecting optical structure, effectively simulates the sky light effect, reduces the processing difficulty and cost, and has obvious economic benefits.

[0020] 2. The present invention starts two stepper motors to operate synchronously. The curtain drum and the rope winding column release the starry sky curtain and gather the traction rope respectively. The traction rope pulls the starry sky curtain to release and cover the storage room. The light source is controlled to emit white light, and the light finally shines on the surface of the starry sky curtain. The surface of the translucent sheet distributed on the surface of the starry sky curtain is colored, and the colored light scattered by the translucent sheet simulates the effect of the starry sky. This set of devices is low-cost, easy to implement, and has a stable effect. It improves the night background function of the sky window and helps to improve user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the appearance of the present invention;

[0022] Figure 2 This is a half-covered bottom view of the starry sky curtain of the present invention;

[0023] Figure 3 This is a schematic diagram of the disassembly of the storage chamber and the protective frame of the present invention;

[0024] Figure 4 It is a schematic diagram of the traction rope of the present invention pulling the starry sky curtain;

[0025] Figure 5 It is a schematic diagram of the composition structure of the light chamber of the present invention;

[0026] Figure 6 A top view showing the distribution of light sources in the light room of the present invention;

[0027] Figure 7 It is a cross-sectional view of the optical chamber structure of the present invention;

[0028] Figure 8 The light path diagram of the light room of the present invention;

[0029] Fig. 9 It is a schematic diagram of the intensity of light irradiated on the light homogenizing plate of the present invention;

[0030] Fig.10 is a schematic diagram of the light emitting angle of the light source of the present invention;

[0031] Fig.11 It is a distribution curve diagram of the light emitting angle and light intensity of the light source of the present invention.

[0032] In the figure: 1, light source; 2, homogenizing plate; 3, light-transmitting plate; 4, upper reflector; 5, light chamber; 6, side reflector; 7, outer cover; 8, guard frame; 9, storage and release chamber; 10, stepping motor; 11, curtain drum; 12, starry sky curtain; 13, rope winding column; 14, edge pressure strip; 15, cardboard; 16, traction rope A, first light trap; B, second light trap; C, third light trap; D, fourth light trap; W, initial light; F, first reflected light; T, second reflected light; R, scattered light. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] like Figures 1 to 11 As shown, in an embodiment of the present invention, a device for simulating a skylight environment with a side-reflecting optical structure includes a light source 1, an outer cover 7 and a protective frame 8, wherein four light sources 1 are provided and are respectively fixedly installed at four side edges inside the protective frame 8, the protective frame 8 is fixedly installed at the bottom of the outer cover 7, an upper reflector 4 and a side reflector 6 are fixedly installed inside the outer cover 7, the upper reflector 4 is fixedly installed at the top of the inner cavity of the outer cover 7, four side reflectors 6 are provided and are respectively fixedly installed on four inner side surfaces of the outer cover 7, the side reflectors 6 and the upper reflector 4 together constitute a light chamber 5, and a light homogenizing plate 2 and a light-transmitting plate 3 are stacked from top to bottom in the middle of the protective frame 8.

[0035] Among them, the two symmetrical outer sides of the guard frame 8 are equipped with a storage chamber 9 and a stepper motor 10, and the two storage chambers 9 are respectively movably installed with a curtain drum 11 and a rope winding column 13, and the surfaces of the curtain drum 11 and the rope winding column 13 are respectively wound with a starry sky curtain 12 and a traction rope 16, and the starry sky curtain 12 is connected with the traction rope 16. The stepper motor 10 is fixedly installed on the outside of the storage chamber 9 and is transmission-connected with the curtain drum 11 and the rope winding column 13 in the inner cavity of the storage chamber 9. A pressure strip 14 is fixedly installed on the bottom of the guard frame 8, and the pressure strip 14 presses the starry sky curtain 12 against the bottom surface of the guard frame 8, and a clamping plate 15 is clamped between the pressure strip 14 and the outer cover 7.

[0036] Among them, the light sources 1 are all arranged between the light-emitting plate 2 and the side reflector 6 on their corresponding sides. The angle θ between the light-emitting surfaces of the four light sources 1 and the horizontal plane is adjustable. The normal perpendicular to the light-emitting surface of the light source 1 is defined as 0°, the clockwise direction is +90°, and the counterclockwise direction is -90°. By adjusting the angle θ between the light source and the horizontal plane, the illumination distribution on the light-emitting plate 2 can be changed. The light source 1 adopts but is not limited to the scattered light RG, the second light trap B, the initial light W, and the LE fourth light trap D of the four-color chip.

[0037] The initial light W emitted by the light source 1 is reflected by the upper reflector 4 or the side reflector 6 for the first time to form a primary reflected light F, and the primary reflected light F is reflected by the upper reflector 4 or the side reflector 6 to form a secondary reflected light T. Any light in the light chamber 5 is emitted to the external environment through the light homogenizing plate 2 and the light-transmitting plate 3 to form a scattered light R. Fig.11 The corresponding Fig.10The distribution curve of the luminous intensity at the luminous angle of the light source in the middle. The horizontal axis of the curve is the luminous angle of the light source, from -90° to +90°; the vertical axis of the curve is the luminous intensity value, which is based on the maximum luminous intensity of 100%. From this curve, it can be seen that the relationship between the luminous angle of the light source and the luminous flux is:

[0038]

[0039] Φ is the luminous flux of the light source; I is the luminous intensity of the light source; α is the angle between the initial light W and the normal.

[0040] The above formula shows that the relationship between luminous flux and luminous angle is a cosine curve relationship. The closer the luminous angle is to 0°, the greater the luminous flux. The greater the luminous flux, the stronger the irradiated light, the stronger the light falling on the reflector or homogenizer, and the brighter the reflector or homogenizer in this area.

[0041] Among them, the areas where the four light sources 1 are located are blocked by the light source 1 body to form the first light trap A, the second light trap B, the third light trap C and the fourth light trap D which cannot reflect light. The light emitted by the light source 1 may shine into any light trap area after being reflected by the upper reflector 4 or the side reflector 6. The light entering the light trap area is absorbed and no longer reflected outward.

[0042] Among them, the bottom of the inner side of the storage chamber 9 is provided with a strip groove for the starry sky curtain 12 or the traction rope 16 to pass through, and the length of the strip groove is adapted to the width of the starry sky curtain 12.

[0043] Among them, the edge pressing strip 14 presses the starry sky curtain 12 in a posture parallel to the extension direction of the starry sky curtain 12, and the traction rope 16 is located between the edge pressing strip 14 and the guard frame 8. The edge pressing strip 14 presses the starry sky curtain 12 mainly for the posture of the starry sky curtain 12, to prevent the starry sky curtain 12 from having wrinkles on the surface, and to ensure the light transmission quality.

[0044] Among them, the front end of the edge pressing strip 14 is provided with a downwardly bent lower edge end, and the starry sky curtain 12 is inserted between the edge pressing strip 14 and the guard frame 8 through the lower edge end. The lower edge end is to ensure that the starry sky curtain 12 can be inserted smoothly between the clamping plate 15 and the guard frame 8. A through hole is provided at the tail end of the edge pressing strip 14 for the traction rope 16 to pass through. On the one hand, the through hole facilitates the passage of the traction rope 16 during the transmission process, and on the other hand, it can stabilize the posture of the traction rope 16 to prevent it from being skewed.

[0045] Among them, the shape of the card plate 15 is "[" shape, and the card plate 15 is clamped on the rear side of the lower edge of the edge strip 14. Since the fixing part of the edge strip 14 and the guard frame 8 are at the tail end of the edge strip 14, the length of the edge strip 14 is relatively long, which will cause the lower edge of the edge strip 14 to fall due to gravity, resulting in insufficient pressure applied by its lower edge and front part on the edge strip 14. Therefore, the card plate 15 is clamped on the lower edge of the edge strip 14 to compensate for the pressure of the card plate 15.

[0046] Working principle and usage process:

[0047] like Figure 8 As shown, when the light angle α is on the right side of the normal line, α>0, and on the left side, α<0; when the light source is tilted at an angle of θ;

[0048] When the light angle α satisfies 0<α<δ, the light from the light source is reflected by the side reflector 6 onto the light homogenizing plate, forming scattered light on the light homogenizing plate 2 and projected out through the light-transmitting plate;

[0049] When the light angle α satisfies α>δ, the light from the light source is reflected by the side reflector 6 to the upper reflector 4, and then reflected again by the upper reflector 4 to the light homogenizing plate 2;

[0050] When the light angle α satisfies γ<α<0, the light from the light source is reflected by the side reflector 6, and then reflected by the side reflector 6 into the first light trap A, and then absorbed;

[0051] When the light angle α satisfies β+γ<α<0, the light from the light source is reflected by the upper reflector 4 to the side reflector 6 , and then reflected again by the side reflector 6 to the light homogenizing plate 2 .

[0052]

[0053] E is the illuminance; S is the light receiving area. Combining the light source luminous angle-illuminance formula, it can be concluded that the illuminance covered by the left area on the homogenizing plate 2 is stronger, and the illuminance covered by the right area is weaker, such as Fig. 9 As shown, based on the above description, when the first light trap A side is illuminated by a light source, the light distribution on the light homogenizing plate is as shown in the first figure, when the second light trap B side is illuminated by a light source, the light distribution on the light homogenizing plate is as shown in the second figure, and when there are light sources all around, the light distribution on the light homogenizing plate is as shown in the third figure.

[0054] It can be obtained from the above that the light source at the second light trap B is opposite to the light source at the first light trap A to the light homogenizing plate 2. Therefore, the light source at the second light trap B covers a stronger illuminance on the right area of ​​the light homogenizing plate 2, and a weaker illuminance on the left area. Similarly, the light sources at the third light trap C and the fourth light trap D cover a stronger illuminance on the area of ​​the light homogenizing plate 2 near the light source, and a weaker illuminance on the area of ​​the light homogenizing plate 2 far from the light source. The light is irradiated on the light homogenizing plate 2 and homogenized by the light homogenizing plate, so that the local non-uniform light is uniformized and projected through the light-transmitting plate 3 to form a surface light source for ambient lighting. By adjusting the angle θ between the light source and the horizontal plane, the sizes of β, γ, α, and δ can be changed, thereby changing the illuminance distribution on the light homogenizing plate 2, and simulating the distribution of background light intensity at different positions of the sky, thereby simulating the dynamic sky background light environment such as sunrise, sunset, and cloud covering the sun.

[0055] And at night, by starting the two stepper motors 10 for synchronous operation, the starry sky curtain 12 can be pulled out through the traction rope 16 to cover the storage room 9. The surface of the starry sky curtain 12 is black and dotted with light-transmitting sheets that can cast light. The light-transmitting sheets are arranged with a gorgeous starry sky background. White light is emitted through the light source 1, and the light finally shines on the surface of the starry sky curtain 12. The surface of the light-transmitting sheet is colored, and the colored light scattered by the light-transmitting sheet simulates the effect of the starry sky.

[0056] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including 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 device.

[0057] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for simulating a skylight environment with a side-reflecting optical structure, comprising a light source (1), an outer cover (7) and a protective frame (8), characterized in that: The light sources (1) are provided with four in total and are respectively fixedly mounted on four side edges of the inner side of the protective frame (8); the protective frame (8) is fixedly mounted on the bottom of the outer cover (7); an upper reflector (4) and a side reflector (6) are fixedly mounted inside the outer cover (7); the upper reflector (4) is fixedly mounted on the top of the inner cavity of the outer cover (7); the side reflectors (6) are provided with four in total and are respectively fixedly mounted on four inner side surfaces of the outer cover (7); the side reflectors (6) and the upper reflector (4) are fixedly mounted on the inner side of the outer cover (7); ) together form a light chamber (5); a light homogenizing plate (2) and a light-transmitting plate (3) are stacked from top to bottom in the middle of the guard frame (8); the light sources (1) are all arranged between the light homogenizing plate (2) and the side reflector (6) on their corresponding sides; the angle θ between the light-emitting surfaces of the four light sources (1) and the horizontal plane is adjustable; the areas where the four light sources (1) are located are shielded by the light source (1) body to form a first light trap A, a second light trap B, a third light trap C and a fourth light trap D that cannot reflect light.

2. The device for simulating a skylight environment with a side-reflective optical structure according to claim 1, characterized in that: The two symmetrical outer sides of the guard frame (8) are both equipped with a storage chamber (9) and a stepper motor (10), and the two storage chambers (9) are respectively movably equipped with a curtain drum (11) and a rope winding column (13), and the surfaces of the curtain drum (11) and the rope winding column (13) are respectively wound with a starry sky curtain (12) and a traction rope (16), and the starry sky curtain (12) is connected to the traction rope (16). The stepper motor (10) is fixedly installed on the outer side of the storage chamber (9) and is transmission-connected with the curtain drum (11) and the rope winding column (13) in the inner cavity of the storage chamber (9). A pressure strip (14) is fixedly installed on the bottom of the guard frame (8), and the pressure strip (14) presses the starry sky curtain (12) against the bottom surface of the guard frame (8), and a clamping plate (15) is clamped between the pressure strip (14) and the outer cover (7).

3. The device for simulating a skylight environment with a side-reflective optical structure according to claim 2, characterized in that: The light source (1) emits an initial light beam W which is reflected for the first time by an upper reflector (4) or a side reflector (6) to form a primary reflected light beam F. The primary reflected light beam F is then reflected by the upper reflector (4) or the side reflector (6) to form a secondary reflected light beam T. Any light beam is emitted to the external environment through a light homogenizing plate (2) and a light-transmitting plate (3) to form a scattered light beam R.

4. The device for simulating a skylight environment with a side-reflective optical structure according to claim 2, characterized in that: The bottom of the inner side of the storage chamber (9) is provided with a strip groove for the starry sky curtain (12) or the traction rope (16) to pass through, and the length of the strip groove is adapted to the width of the starry sky curtain (12).

5. The device for simulating a skylight environment with a side-reflective optical structure according to claim 2, characterized in that: The edge pressing strip (14) presses the starry sky curtain (12) in a manner parallel to the extension direction of the starry sky curtain (12), and the traction rope (16) is located between the edge pressing strip (14) and the guard frame (8).

6. The device for simulating a skylight environment with a side-reflective optical structure according to claim 5, characterized in that: The front end of the edge pressing strip (14) is provided with a downwardly bent lower edge end, and the starry sky curtain (12) is inserted between the edge pressing strip (14) and the guard frame (8) through the lower edge end. The rear end of the edge pressing strip (14) is provided with a through hole for the traction rope (16) to pass through.

7. The device for simulating a skylight environment with a side-reflective optical structure according to claim 2, characterized in that: The outer shape of the clamping plate (15) is in the shape of a "["; the clamping plate (15) is clamped on the rear side of the lower edge of the edge pressing strip (14).

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