TWI655390B - Light guiding system for natural light illumination system - Google Patents

Abstract

A light guide device for a natural light lighting system. The light-guiding device of the present invention includes a first dual-rotation shaft actuating device, a reflector, a second dual-rotation shaft actuating device, a sunlight collecting device, and a control device. The control device is used to control the second dual-rotation shaft actuating device to rotate the sunlight collecting device according to the current time and the first look-up table, so that the sunlight is perpendicularly transmitted to the sunlight collecting device and then transmitted to the reflecting mirror. The control device receives a first rotation angle of the sunlight collecting device, and determines a second rotation angle according to the first rotation angle and the second lookup table. The control device controls the first double-rotation axis actuator according to the two rotation angles to rotate the reflecting mirror, so that the reflecting mirror reflects sunlight perpendicularly to the opening of the front-end light transmission tube.

Description

Light guide system for natural light lighting system

The present invention relates to a light guide system, and in particular, to a light guide system for a natural light lighting system.

Most of the existing natural light lighting systems use a collection disk and a reflection disk to reflect sunlight to a metal tube, a light guide tube, and the like. However, after the light is repeatedly reflected in these natural light lighting systems, the light decay is obvious, resulting in a weak light exiting the light exit of the terminal.

Existing natural light lighting systems also use glass or acrylic to make light-collecting plates, which are used to collect the light from a planar light source into point-shaped light, and then guide the light into the room with optical fibers. Although the structure of this natural light lighting system is lightweight, light has undergone more reflections, total reflections, and refractions in this natural light lighting system, and the light attenuation is more serious. In addition, such a natural light illumination system can only guide light to a fixed indoor location, but cannot allow the light guided into the room to be selectively emitted and used at different locations in the room.

The amount of light incident vertically into the front-end light transmission tube of the natural light illumination system will greatly affect the amount of light emitted from the terminal light exit of the natural light illumination system. In order to apply solar energy more efficiently, the Republic of China Patent No. M447952 discloses that the natural light illumination system includes a Fresnel mirror, which is optically coupled to the opening of the front-end light transmission tube, and is installed to illuminate the natural light source. The light to the Fresnel mirror is reflected to enter the opening of the front-end light transmission tube substantially perpendicularly.

However, the previous technology of natural light lighting systems There is no accurate sun-tracking function for light collection and light guide, which leads to room for improvement in the use efficiency of sunlight.

Therefore, one technical problem to be solved by the present invention is to provide a light guide system for a natural light lighting system. In addition, the light guide system of the present invention has an accurate sun-tracking function, which can greatly improve the operating efficiency of sunlight.

The light guide system according to the first preferred embodiment of the present invention is for a natural light lighting system. The natural light illumination system includes a front-end light transmission tube. The light guide system according to the first preferred embodiment of the present invention includes a first dual-rotation axis actuating device, a mirror, a second dual-rotation axis actuating device, a sunlight collecting device, a first angle detecting element, and a control device. The reflecting mirror is fixed on the first double-rotation axis actuator and is optically coupled to the front-end light transmission tube. The sunlight collecting device is fixed on the second double-rotation actuator and is optically coupled to the reflecting mirror. The control device is electrically connected to the first dual-spindle actuator, the second dual-spindle actuator, and the first angle detection element. The control device is used to control the second double-rotation shaft actuating device according to the current time and the first look-up table, so as to rotate the sunlight collecting device, so that the sunlight strikes the sunlight collecting device vertically. Sunlight is transmitted to the mirror by the sunlight collecting device. The first angle detecting element is disposed to detect a first rotation angle of the sunlight collecting device. The control device receives the first rotation angle, and determines the second rotation angle according to the first rotation angle and the second lookup table. The control device controls the first dual-rotation axis actuator according to the second rotation angle to rotate the reflecting mirror, so that the reflecting mirror reflects sunlight perpendicularly to the opening of the front-end light transmission tube.

In a specific embodiment, the sunlight collecting device includes a Fresnel mirror and a convex mirror. Fresnel mirrors have through holes. The sunlight reflected by the Fresnel mirror is reflected by the convex mirror to pass through the through hole, and then hits the mirror.

In another embodiment, the sunlight collecting device includes a Fresnel lens. Focus on the Fresnel lens and focus on the mirror.

In a specific embodiment, the first angle detecting element may be a gyroscope.

Further, the light guiding system according to the first preferred embodiment of the present invention further includes a second angle detecting element. The second angle detecting element is electrically connected to the control device. The second angle detecting element is arranged to detect a second rotation angle of the mirror.

The light guide system according to the second preferred embodiment of the present invention is for a natural light lighting system. The natural light illumination system includes a front-end light transmission tube. The light guide system according to the second preferred embodiment of the present invention includes a dual-spindle actuating device, a mirror, a control device, and a multi-point illumination detection device. The mirror is fixed on the double-rotation actuator and is optically coupled to the front-end light transmission tube. The control device is electrically connected to the dual-spindle actuator. The control device is used to control the dual-spindle actuating device to rotate the reflecting mirror according to a plurality of predetermined times and a reference table, so that the sunlight hitting the reflecting mirror is reflected to the opening of the front-end light transmission tube. The multi-point illuminance detection device is electrically connected to the control device, and is disposed between the reflector and the opening of the front-end light transmission tube. The multi-point illuminance detection device is used to detect a plurality of illuminance values of the sunlight incident on the opening of the front-end light transmission tube. The control device receives a plurality of illuminance values, and controls the dual-spindle actuating device according to the plurality of illuminance values to adjust the rotation angle of the reflector, so that the reflector reflects sunlight perpendicularly to the opening of the front-end light transmission tube.

In a specific embodiment, the multi-point illumination detection device includes a support frame, a ring-shaped member, and a plurality of light detection elements. The ring-shaped member is fixed to the end of the support frame. The plurality of light detecting elements are fixed on the ring member and face the mirror. The plurality of light detecting elements are electrically connected to the control device and are used to detect a plurality of illuminance values.

In a specific embodiment, each light detecting element may be a photodiode.

Further, according to the guidance of the second preferred embodiment of the present invention The light system also includes an angle detection element. The angle detection element is electrically connected to the control device. The angle detecting element is arranged to detect the rotation angle of the reflector.

Different from the prior art, the light guide system for the natural light lighting system of the present invention has an accurate sun-tracking function, which can greatly improve the use efficiency of sunlight.

The advantages and spirit of the present invention can be further understood through the following detailed description of the invention and the accompanying drawings.

1‧‧‧light guide system

10‧‧‧The first double shaft actuating device

11‧‧‧Reflector

12‧‧‧Second double-spindle actuator

13‧‧‧Sunlight collection device

132‧‧ Fresnel mirror

1320‧‧‧through hole

134‧‧‧ convex mirror

136‧‧ Fresnel lens

14‧‧‧First angle detection element

15‧‧‧control device

16‧‧‧Second angle detection element

2‧‧‧ Natural Lighting System

20‧‧‧ front-end optical transmission tube

202‧‧‧ opening

3‧‧‧ sun

4‧‧‧light guide system

40‧‧‧Double shaft actuating device

42‧‧‧Reflector

44‧‧‧Control device

46‧‧‧Multi-point Illumination Detection Device

462‧‧‧Support

464‧‧‧Ring member

466‧‧‧light detection element

48‧‧‧Angle detection element

FIG. 1 is a schematic structural diagram of a light guide system according to a first preferred embodiment of the present invention.

FIG. 2 is another schematic diagram of the light guide system according to the first preferred embodiment of the present invention.

FIG. 3 is a schematic structural diagram of a light guide system according to a second preferred embodiment of the present invention.

FIG. 4 is an appearance view of a multi-point illumination detection device, which is a necessary element of a light guide system according to a second preferred embodiment of the present invention.

Please refer to FIG. 1 and FIG. 2, which schematically depict the light guide system 1 of the first preferred embodiment of the present invention. 1 and 2 are schematic diagrams illustrating the architecture of a light guide system 1 according to a first preferred embodiment of the present invention.

As shown in FIG. 1, a light guide system 1 according to a first preferred embodiment of the present invention is used for a natural light illumination system 2. The natural light illumination system 2 includes a front-end light transmission tube 20. In FIG. 1, only the front-end optical transmission tube is shown. 20 as a representative of the natural light lighting system 2. In practical applications, the front-end light transmission tube 20 is disposed at a fixed orientation and horizontally. For example, in FIG. 1, the front-end light transmission tube 20 is disposed northward and horizontally, but is not limited thereto. For the architecture of the natural light illumination system 2, please refer to the patent No. M447952, but it is not limited to the architecture disclosed in the patent No. M447952. The architecture of the natural light illumination system 2 is not repeated here.

As shown in FIG. 1, a light guide system 1 according to a first preferred embodiment of the present invention includes a first dual-rotation axis actuator 10, a reflector 11, a second dual-rotation axis actuator 12, and a sunlight collection device 13. , The first angle detecting element 14 and the control device 15.

The reflecting mirror 11 is fixed on the first double-rotation axis actuator 10 and is optically coupled to the front-end light transmission tube 20. The sunlight collecting device 13 is fixed on the second double-rotation shaft actuating device 12 and is optically coupled to the reflecting mirror 11. The control device 15 is electrically connected to the first dual-spindle actuator device 10, the second dual-spindle actuator device 12, and the first angle detection element 14, respectively.

The control device 15 is configured to control the second dual-rotation shaft actuating device 12 according to the current time and the first look-up table to rotate the sunlight collecting device 13, so that the sunlight emitted by the sun 3 is vertically emitted to the sunlight collecting device 13.

In a specific implementation, the first comparison table is established according to the solar calendar, that is, the azimuth sun position is used to calculate the azimuth and elevation angles to track the sun position, or the track of the sun is tracked, and the earth rotates 15 ° per hour, The earth axis moves back and forth ± 23.5 ° a year to design the parameters to track the position of the sun. The first comparison table is amended according to the geographical location and altitude where the natural light lighting system 2 is located.

As also shown in FIG. 1, sunlight is transmitted to the reflecting mirror 11 by the sunlight collecting device 13. The first angle detecting element 14 is disposed to detect a first rotation angle (Φ _T , θ _T ) of the sunlight collecting device 13. The control device 15 receives the first rotation angle (Φ _T , θ _T ) detected by the first angle detection element 14, and determines the second rotation based on the first rotation angle (Φ _T , θ _T ) and the second comparison table. Angle (Φ _M , θ _M ). The control device 15 controls the first double-rotation axis actuator 10 to rotate the reflecting mirror 11 according to the second rotation angle (Φ _M , θ _M ), so that the reflecting mirror 11 reflects sunlight perpendicularly to the opening 202 of the front-end light transmission tube 20. Obviously, unlike the prior art, the light guide system 1 according to the first preferred embodiment of the present invention has four degrees of freedom of rotation and can actively chase the sun. Thereby, the light guide system 1 according to the first preferred embodiment of the present invention can greatly improve the operating efficiency of sunlight.

In a specific embodiment, the second comparison table is based on the relative position of the reflector 11 and the sunlight collection device 13, the relative position of the reflector 11 and the opening 202 of the front-end light transmission tube 20, and the second rotation angle (Φ _M , θ _M ). Alternatively, the light beam is vertically emitted to the sunlight collecting device 13 at different first rotation angles (Φ _T , θ _T ), and a photodiode is set at the center of the opening 202 of the front-end light transmission tube 20, and the second rotation is adjusted Angles (Φ _M , θ _M ) so that the light-sensitive diode receives the light beam reflected by the reflector 11 and incident perpendicularly, thereby establishing a second comparison table.

In an example, as shown in FIG. 1, the front-end light transmission tube 20 is disposed northward and horizontally, Φ _T and Φ _M are east-west angle values, 0 degrees in the east and 180 degrees in the west. θ _M and θ _T are north-south angle values, and the north is 0 degrees and the south is 180 degrees.

In a specific embodiment, as shown in FIG. 1, the sunlight collecting device 13 includes a Fresnel mirror 132 and a convex mirror 134. The Fresnel mirror 132 has a through hole 1320. The sunlight reflected by the Fresnel mirror 132 is reflected by the convex mirror 134 to pass through the through-hole 1320 and then to the mirror 11.

In another embodiment, as shown in FIG. 2, the sunlight collecting device 13 includes a Fresnel lens 136. The Fresnel lens 136 is focused on the mirror 11. Elements in FIG. 2 that have the same reference numerals as those in FIG. 1 have the same or similar structures and functions, and will not be repeated here.

In a specific embodiment, the first angle detection element 14 may It's a gyroscope.

Further, as shown in FIGS. 1 and 2, the light guide system 1 according to the first preferred embodiment of the present invention further includes a second angle detection element 16. The second angle detecting element 16 is electrically connected to the control device 15. The second angle detecting element 16 is disposed to detect a second rotation angle (Φ _M , θ _M ) of the mirror 11.

Please refer to FIG. 3 and FIG. 4, which schematically depict the light guide system 4 of the second preferred embodiment of the present invention. FIG. 3 schematically illustrates the architecture of a light guide system 4 according to a second preferred embodiment of the present invention. FIG. 4 is a schematic diagram illustrating an external view of a multi-point illumination detection device 46, which is a necessary element of a light guide system 4 according to a second preferred embodiment of the present invention.

As shown in FIG. 3, the light guide system 4 according to the second preferred embodiment of the present invention is used for the natural light illumination system 2. Similarly, the natural light illumination system 2 includes a front-end light transmission tube 20. Similarly, in FIG. 3, only the front-end light transmission tube 20 is shown as a representative of the natural light illumination system 2. In practical applications, the front-end light transmission tube 20 is disposed at a fixed orientation and horizontally. For example, in FIG. 3, the front-end light transmission tube 20 is disposed northward and horizontally, but is not limited thereto. For the architecture of the natural light illumination system 2, please refer to the patent No. M447952, but it is not limited to the architecture disclosed in the patent No. M447952. The architecture of the natural light illumination system 2 is not repeated here.

As shown in FIG. 3, the light guide system 4 according to the second preferred embodiment of the present invention includes a dual-rotation axis actuating device 40, a reflecting mirror 42, a control device 44, and a multi-point illumination detection device 46.

The reflecting mirror 42 is fixed on the double-rotation axis actuator 40 and is optically coupled to the front-end light transmission tube 20.

The control device 44 is electrically connected to the dual-spindle actuating device 40. The control device 44 is configured to control the double-rotation shaft actuating device 40 to rotate the reflecting mirror 42 according to a plurality of predetermined times and a look-up table, so that the sunlight incident on the reflecting mirror 42 is reflected. To the opening 202 of the front-end light transmission tube 20. In practical applications, the plurality of predetermined times may include 6 am, 12 noon, and 5 pm.

In a specific embodiment, the comparison table record stored in the control device 44 is the same as the second rotation angle (Φ _M , θ _M ) of the corresponding time in the second comparison table above, and according to where the natural light illumination system 2 is erected Location and altitude.

As also shown in FIG. 3, the multi-point illuminance detection device 46 is electrically connected to the control device 44 and is disposed between the reflecting mirror 42 and the opening 202 of the front-end light transmission tube 20. After the control device 44 is used to control the dual-spindle actuating device 40 according to a plurality of predetermined times and a look-up table to initially rotate the reflecting mirror 42 so that the sunlight hitting the reflecting mirror 42 is reflected toward the opening 202 of the front-end light transmission tube 20, The multi-point illuminance detecting device 46 is configured to detect a plurality of illuminance values of the sunlight incident on the opening 202 of the front-end light transmission tube 20.

The control device 44 receives a plurality of illuminance values, and controls the dual-spindle actuator device 40 according to the plurality of illuminance values to adjust the rotation angle (Φ _M , θ _M ) of the reflecting mirror 42, so that the reflecting mirror 42 reflects sunlight perpendicularly to the front-end light transmission tube. 20 的 孔 202。 The opening 202 of 20. That is, the control device 44 calculates the angular deviation value according to the difference between the multiple illuminance values, and then controls the dual-rotation axis actuator 40 to adjust the rotation angle (Φ _M , θ _M ) of the mirror 42 according to the angular deviation value. .

Unlike the prior art, the light guide system 4 according to the second preferred embodiment of the present invention utilizes a multi-point illumination detection device 46 to passively track the sun. Thereby, the light guide system 4 according to the second preferred embodiment of the present invention can greatly improve the utilization efficiency of sunlight.

In a specific embodiment, as shown in FIG. 4, the multi-point illuminance detection device 46 includes a support frame 462, a ring-shaped member 464, and a plurality of light detection elements 466. The ring-shaped member 464 is fixed to the end of the support frame 462. The plurality of light detecting elements 466 are fixed on the ring-shaped member 464 and face the mirror 42. The plurality of light detecting elements 464 are electrically connected to the control device 44 and are used for detecting Measure multiple illumination values. In the example shown in FIG. 4, the plurality of light detection elements 466 are four light detection elements 466 and are fixed to the ring-shaped member 464 at the same interval.

In a specific embodiment, each light detecting element 466 may be a photodiode.

Further, the light guide system 4 according to the second preferred embodiment of the present invention further includes an angle detecting element 48. The angle detecting element 48 is electrically connected to the control device 44. The angle detecting element 48 is disposed to detect the rotation angle of the reflector 42. The control device 44 receives the rotation angle detected by the angle detection element 48 to control the dual-spindle actuating device 40 to adjust the rotation angle of the mirror 42.

Through the detailed description of the above preferred embodiments, it can be clearly understood that the light guide system for the natural light lighting system of the present invention has an accurate sun-tracking function, and can greatly improve the efficiency of using sunlight.

With the above detailed description of the preferred embodiments, it is hoped that the features and spirit of the present invention may be more clearly described, rather than limiting the aspects of the present invention with the preferred embodiments disclosed above. On the contrary, the intention is to cover various changes and equivalent arrangements within the scope of the patent scope of the present invention. Therefore, the aspect of the patent scope of the present invention should be explained in the broadest sense according to the above description, so that it covers all possible changes and equal arrangements.

Claims (9)

A light guide system is provided for a natural light illumination system. The natural light illumination system includes a front-end light transmission tube. The front-end light transmission tube is arranged in a fixed orientation and horizontally. The light guide system includes: a first Double-spindle actuating device; a reflector fixed on the first double-spindle actuating device and optically coupled to the front-end light transmission tube; a second double-spindle actuating device; a sunlight collecting device, fixed on A second double-rotation axis actuating device and optically coupled to the mirror; a first angle detecting element; and a control device respectively electrically connected to the first double-rotation axis actuating device and the second double-axis actuation device Moving device and the first angle detecting element, and used to control the second dual-rotation shaft actuating device to rotate the sunlight collecting device according to a current time and a first look-up table, so that a sunlight strikes the sunlight vertically A collecting device, the sunlight is transmitted to the reflecting mirror by the sunlight collecting device; wherein the first angle detecting element is arranged to detect a first rotation angle about the sunlight collecting device The control device receives the first rotation angle and determines a second rotation angle according to the first rotation angle and a second look-up table. The control device controls the first dual-rotation axis actuator to rotate the first rotation angle according to the second rotation angle. The reflecting mirror causes the reflecting mirror to reflect the sunlight perpendicularly into an opening of the front-end light transmission tube. The light guiding system according to claim 1, wherein the sunlight collecting device includes a Fresnel mirror and a convex mirror, the Fresnel mirror has a through hole, and the sunlight passing through the Fresnel mirror reflects The convex mirror reflects to pass through the through hole and then hits the reflecting mirror. The light guiding system according to claim 1, wherein the sunlight collecting device includes a Fresnel lens, and the Fresnel lens is focused on the reflector. The light guiding system according to claim 1, wherein the first angle detecting element is a gyroscope. The light guiding system according to claim 1, further comprising a second angle detection element electrically connected to the control device, and the second angle detection element is arranged to detect the second rotation about the reflector angle. A light guide system is provided for a natural light illumination system. The natural light illumination system includes a front-end light transmission tube, and the front-end light transmission tube is arranged in a fixed orientation and horizontally. The light guide system includes: a double shaft An actuating device; a reflecting mirror, which is fixed on the double-spindle actuating device and is optically coupled to the front-end light transmission tube; a control device, which is electrically connected to the double-spindle actuating device, and is used for Time and a look-up table to control the dual-rotation axis actuating device to rotate the mirror, so that a piece of sunlight hitting the mirror is reflected to an opening of the front-end light transmission tube; and a multi-point illumination detection device, which is an electric system Connected to the control device and disposed between the reflector and the opening of the front-end light transmission tube, the multi-point illuminance detection device is used to detect a plurality of illuminance values regarding the sunlight that hits the opening; The control device receives the plurality of illuminance values and controls the dual-rotation axis actuator according to the plurality of illuminance values to adjust a rotation angle of the reflecting mirror, so that the reflecting mirror reflects the sunlight vertically into The light-transmitting distal end of the tube opening. The light guide system according to claim 6, wherein the multi-point illuminance detection device includes a support frame, a ring-shaped member, and a plurality of light detection elements, and the ring-shaped member is fixed at one end of the support frame, the A plurality of light detection elements are fixed on the ring-shaped member and face the reflector. The plurality of light detection elements are electrically connected to the control device and used to detect the multiple illuminance values. The light guiding system according to claim 6, wherein each light detecting element is a photosensitive diode. The light guiding system according to claim 6, further comprising an angle detection element electrically connected to the control device, and the angle detection element is arranged to detect the rotation angle of the reflector.