JPS634502A - Lighting apparatus using solar collector - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention is directed to solar lighting W! The present invention relates to a lighting device using a lamp, and particularly to a lighting device that guides sunlight to the inside and outside of a building to produce a lighting effect.

``Conventional technology'' Conventionally, it is possible to introduce sunlight that has been concentrated elsewhere into places that are not directly exposed to sunlight (for example, underground facilities such as underground malls and basements, or inside houses in densely populated residential areas). 2. Description of the Related Art Providing illumination has been considered, and as an example, a lighting device using a daylighting device as shown in FIGS. 7 and 8 is known.

Since the daylighting device l is installed outdoors in a place without obstacles, it includes a condensing lens (for example, a Fresnel lens) 2 that is installed facing the sun and converges sunlight S toward one point, and Guide sunlight S to the necessary location 1
One end surface of the optical fiber cable 3, that is, the light receiving surface 3a is installed near the convergence position of the sunlight S, and the other end surface (not shown) is installed at a necessary location. It has a general configuration in which the condensing lens 2 follows the movement of the sun and converges sunlight, and the converged sunlight is connected to the sun by an optical fiber cable 3. It is designed to transmit light to areas where it is needed.

``Problems to be Solved by the Invention'' However, in the lighting device using the conventional daylighting device, the following problems existed.

That is, the collected sunlight S is first converged by the condensing lens 2 and then transmitted by the optical fiber cable 3, so if you want to bring about a wide range of illumination effects on the other end faces, you can use the Fresnel lens again. It is necessary to use a diffusing lens such as

However, the problem with the Fresnel lens is that it has a large incident light loss and has a large aperture for practical purposes, making it uneconomical and increasing the cost of the lighting device.

In order to eliminate this problem of 8 points, the condenser lens 2
Also, instead of the optical fiber cable 3, a solar lighting device in which a plurality of mirrors are connected with their reflective surfaces inside has also been considered, or when a mirror corresponding to the condensing lens 2 is made to follow the movement of the sun. In addition, since the sunlight S reflected by the mirror travels over a wide range, the area of the mirror corresponding to the optical fiber cable 3 that guides the sunlight in a certain direction inevitably increases. It has problems and cannot be an effective solution.

"Means for Solving the Problems" The present invention aims to provide a lighting device using a solar lighting device that can effectively solve the above-mentioned conventional problems. Consisting of a device and a light guiding device,
The solar lighting device includes a mirror that is installed facing the sun and bends sunlight in a light guiding direction, a control mechanism that supports the mirror and swings it in both meridian and latitude directions, and the control mechanism. a link mechanism that is provided between the mirror and adjusts the swinging position of the control mechanism to always guide the bent sunlight in a constant direction; , consisting of a plurality of reflectors and a support for supporting them, and each of the three front reflectors is attached to the support so that the light guide direction thereof can be bent freely. It is characterized by

π Embodiment" The present invention will be described in detail below with reference to a preferred embodiment shown in FIGS. 1 to 5.

Figure 1, middle tube No. A, indicates a lighting device (hereinafter abbreviated as lighting device) using the solar lighting device according to this embodiment, so it is a solar lighting device installed on the roof of building B, etc. The device 4 and the light guide device 3 installed above the exterior of the bay window W of building B.
It is composed of 0.

First, to explain the sunlight lighting device 11 in detail, this lighting device 4 is installed facing the sun and
A control mechanism 6 that supports the plane mirror 5 and swings it in both meridian and latitude directions; It is generally constituted by a link mechanism 7 that is provided between the mirrors 5 and 7, and that adjusts the swinging position of the plane mirror 5 to always guide the bent sunlight S in a constant direction.

Next, to explain these details, the control mechanism 6, as shown in FIGS. A frame body 24, a first rotating member 11 rotatably attached to the base lO and the outer frame body 24, and a plane passing through the rotational center line of the first rotating member 11. A second rotating member 12.12 (the second rotating member 12 on the negative side is not shown) is rotatably attached along the axis, and the rotation of the first rotating member 11 is A drive mechanism 13 is provided. Further, the plane mirror 5 is fixed to the second rotation member 12.12 so that its rotation center line is the same, and the plane mirror 5 has a surface opposite to the reflection surface of the sunlight S. A drive mechanism 14 for rotating the plane mirror 5 is attached to the surface. Since the second rotating member 12.12 and the plane mirror 5 are fixed to each other, the plane mirror 5 and the second rotating member 12.12 are rotated together by the driving mechanism 14. becomes.

One drive mechanism 1 that rotates the first rotating member 11
3 is composed of a gear 16 integrally attached to the first rotating part Utt, and an electric motor 17 attached to the outer frame body 24 and meshing with the gear 16 to rotate the gear 16, The other drive mechanism 14 that rotates the plane mirror 5 includes an electric motor 18 that is attached so that its rotation center line is parallel to the plane mirror 5, and an electric motor 18 that rotates the plane mirror 5.
By screwing the drive rod 19, which is the drive shaft of No. 8 and has a threaded portion 19a carved into the tip thereof, with the threaded portion 19a of the drive rod 19, which is attached to the first rotating portion (No. 11), The stay 20 reciprocates the drive rod 19 in its length direction.

The control mechanism 6 having such a configuration is installed so as to be located in a plane passing through the rotation axis or the meridian of the first rotation member 11, and the control mechanism 6 is installed so as to be located within a plane passing through the rotation axis or meridian of the first rotation member 11, and is controlled by the negative drive mechanism 13. By rotating the rotating member 11, the plane mirror 5 is moved along the latitude direction, and the other drive mechanism 14 moves the plane mirror 5 along the meridian direction. It is designed to follow the sun as it moves over time.

Further, as shown in FIG. 2, the link mechanism 7 includes sliders 21 and 21 attached to both ends (the negative side is not shown) of the plane mirror 5, and the slider 21 and the first slider. A pair of links 22.22 rotatably connect the second rotating member 11.12. The link mechanism 7 adjusts the rotational position of the second rotational member 12 so that it always forms a constant angle with respect to the reflective surface of the plane mirror 5, and 12 and the preset light guiding direction (direction of arrow S' in Figure 1)
The rotating position of the plane mirror 5 is adjusted so that the included angle between the plane mirror 5 and the plane mirror 5 is always divided into two equal parts by an imaginary line along the reflecting surface of the plane mirror 5.

Further, in this embodiment, in order to control the operation of the two part movement mechanisms 13, 14 in accordance with the movement of the sun and adjust the rotational position of the plane mirror 5, a sun tracking sensor 25 is used to obtain control information. .26 is provided.

One of the solar tracking sensors 25, 26 is attached to the top of the first rotating member 11 for general adjustment, and the other is attached to the tip of the second rotating member 12 for fine adjustment. There is. These solar tracking sensors 25 and 26 have phototransistors (not shown) attached to their tips, and controls that output drive signals to the two-part movement mechanisms 13 and 14 based on signals from the phototransistors. A unit 27 is attached.

On the other hand, in building B to which the lighting device of this example is applied,
As shown in FIG. 1 and FIG. 3 to FIG.
A light guide device 30 for guiding light into the interior of the bay window W is installed above the outside of the bay window W.

The light guide device 30 includes a plurality of rectangular plane mirrors (reflectors) 3
1.31, and the plane mirror 31.31. It is composed of a frame body (support body) 32 that supports... The plane mirror 31 is provided with mounting shafts 33.33 extending in the length direction of the plane mirror 31 at both ends thereof, and the mounting shafts 33.33 are pivotally supported by the frame 32, so that the mounting It is rotatably supported around a shaft 32.

Further, the plane mirrors 31, 31, . . . are formed into a set of louvers by being arranged parallel to each other,
Further, two sets of plane mirrors 31 and 31 formed in the louver shape
, and are assembled with their axes perpendicular to each other, so that the entire structure is attached to the frame 32 in a grid shape in plan view. With the above configuration, the plane mirror 3
1.31. By adjusting the rotational position of the light guiding device 30, the light guiding direction of the entire light guiding device 30 can be clearly configured. That is, in FIG. 1, the plane mirrors 31, 31, . The moving position has been adjusted.

Here, although the mechanism for adjusting the rotational position of the plane mirror 31.31 is arbitrary, for example, an electric motor for driving the mounting shaft 32 which supports the plane mirror 31 is attached to the mounting shaft 32, All you have to do is adjust the rotation position.

As shown in FIG. 1, the illumination device of this embodiment configured as described above is directed toward a rooftop or the like where sunlight S is directly applied in the light guiding direction (in the forward direction of the force direction of arrow S'). Optical device 3
By installing the daylighting device 4 so that 0 is located, the first and second rotating members are put into use, and the first and second By adjusting the rotational position of the rotational members 11 and 12,
The sunlight S can be guided into the inside of the building B by condensing the sunlight S with the plane mirror 5 and bending its direction to irradiate the light guide device 30 .

During such lighting operation, the sunlight S is bent in the light guide direction by the plane mirror 5, and the light guide device 30
Since the light is guided into the building B through the light beam, there is no incident light loss associated with light transmission as in the conventional method, and thereby the lighting efficiency can be improved. In particular, the light guiding device 30
is its light guiding direction force (as it is configured to be bendable,
By adjusting the rotational position of the plane mirrors 31, 31,...
It is possible to freely diffuse and aperture the sunlight S' bent by the light guide device 30 and guide the light toward an arbitrary position, and there is no need to use a diffusion lens as in the prior art. Therefore, since no diffusion lens is used, the cost of the entire lighting device can be kept low.

The plane mirror 5 is maintained by the action of the link mechanism 7 so that a virtual line along the reflection surface of the plane mirror 5 always bisects the included angle between the incident direction and the light guide direction of the sunlight S. Therefore, even if the incident angle of sunlight S changes over time, the direction of the reflected light is kept constant in the light guiding direction. Therefore, the positional relationship of the light guiding device 30 with respect to the daylighting device 4 is uniquely determined, the number of movable parts required to follow the movement of the sun is reduced, and the optical transmission system is simplified accordingly. At the same time, the optical transmission path is fixed as much as possible, and reliable optical transmission can be obtained.

Furthermore, in this embodiment, the position of the plane mirror 5 is automatically adjusted by the action of the sun tracking sensor 25.

Further, FIG. 6 is a diagram showing a modified embodiment of the present invention. In the illumination device of the above embodiment, if the rotational position of the plane mirrors 31 and 31 of the light guide device 30 is adjusted appropriately, the building B can be It is possible to irradiate sunlight S to an outdoor area that is not easily exposed to sunlight, such as a garden facing the north side.

Note that the shapes and dimensions of each component shown in the above embodiments are merely examples, and can be variously changed based on the installation location, type of facility, design requirements, etc.

"Effects of the Invention" As explained in detail above, a lighting device using a solar lighting device according to the present invention includes a solar lighting device and a light guiding device, and the solar lighting device faces toward the sun. A mirror installed to bend sunlight in a light guiding direction, a control mechanism that supports the mirror and swings it in both meridian and latitude directions, and a control mechanism provided between the control mechanism and the mirror. , a link mechanism that always guides the bent sunlight in a constant direction by adjusting the swinging position of the mirror, and the light guide device includes a plurality of reflectors and supporting them. Each of the reflectors is attached to the support so that the light guide direction thereof can be bent, and the sunlight is reflected by the mirror. Since the light is bent in the light guiding direction and sent to the subsequent light guiding device, it is possible to reduce the large optical loss that accompanies optical transmission, thereby greatly improving the lighting efficiency. By the action of the link mechanism, the imaginary line along the mirror's reflective surface is
The included angle between the direction of incidence of sunlight and the direction of light guide is always 2.
By keeping the sunlight divided into equal parts, even if the incident angle of sunlight changes over time, the guiding direction of the reflected light can be maintained in a constant direction. By fixing the positional relationship of Reliable optical transmission can be obtained, and furthermore,
Since the light guiding device is capable of bending sunlight to any position, a diffusing lens such as a Fresnel lens used in conventional sunlight lighting devices becomes unnecessary, making the lighting device more compact. Moreover, it has excellent effects such as being able to be constructed at low cost.

[Brief explanation of the drawing]

Figures 1 to 5 show one embodiment of the present invention.
The figure is a schematic diagram of a building to which one embodiment is applied, Figure 2 is a general front view of a solar lighting device, Figure 3 is a plan view of a light guiding device, Figure 4 is a front view of the same, and Figure 5. 6 shows a modified embodiment of the present invention, and is a schematic diagram of a building to which the modified embodiment is applied. FIGS. 7 and 8 are schematic diagrams showing an example of a conventional lighting device. In the figures, FIG. 6 is a schematic diagram for explaining the lighting effect, and FIG. 7 is a schematic diagram for explaining the state of light entering the optical fiber cable. S: sunlight, 4: daylighting device, 5: plane mirror (mirror), 6:
...Control mechanism, 7...Link mechanism, 30...
・・Light guide device, 31・・・Plane mirror (reflector), 32・
...Frame (support).

Claims (1)

[Claims] A solar lighting device that always guides sunlight in a fixed direction, and a semiconductor device that is installed in the light guiding direction of the sunlight lighting device and bends the guided sunlight toward a predetermined position. The sunlight lighting device includes a mirror that is installed facing the sun and bends sunlight in a light guide direction, and a control that supports the mirror and swings it in both meridian and latitude directions. and a link mechanism that is provided between the control mechanism and the mirror and that adjusts the swinging position of the control mechanism to always guide the bent sunlight in a constant direction. Further, the light guide device is composed of a plurality of reflectors and a support that supports them, and each of the reflectors is attached to the support so that the light guide direction thereof can be bent. A lighting device using a solar lighting device characterized by: