JPH1026736A - Original point position detector in solar ray lighting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an original point detector for a solar lighting device detecting the original point position definitely in the form of an electric signal. SOLUTION: In the solar lighting device which is provided with one sheet of a lighting prism 1 or plural sheets of lighting prisms 1 in a lighting part and in which the rotational angle of these lighting prisms 1 is made to be controlled according to the traveling of the sun, an original point magnet 2 is provided at a reference position becoming the original point in the outer peripheral part of a concentric rotary ring 7 which is driven integrally with the lighting prisms 1 and a magnetic sensing means 3 is provided at a prescribed position near the operational path of the outer peripheral part of the rotary ring 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION In a daylighting apparatus for using sunlight for indoor lighting or the like, a built-in daylighting prism is controlled in accordance with the operation of the sun, and its rotation angle always becomes an appropriate value. Like that. Since the rotation angle of the daylighting prism is set with reference to the origin position of the daylighting prism, it is necessary to install a detection device of the origin point in the sunlight daylighting device. The present invention relates to an improvement of an origin position detecting device in a sunlight collecting device used for such an application.

[0002]

2. Description of the Related Art FIG. 3 is a plan view showing the entire structure of a conventional solar lighting apparatus using a rotating ring to which the present invention is applied, and FIGS. 4A to 4C are the origins of the conventional example. It is a principal part enlarged plan view which shows the structure of a position detection apparatus. 3 is a rotary ring 7 provided concentrically with the daylighting prism 1 disposed outside the daylighting prism 1.
Is formed of the same material (polycarbonate or the like) as the lighting prism 1, and, for example, by arranging four holding plates 8a to 8d so as to intersect as shown in the figure, the lighting prism 1 and the rotating ring 7 rotate integrally. It is configured to be.
Although not shown in FIG. 3, a gear (indicated as 7G in FIG. 4) is engraved on the outer periphery of the rotary ring 7, and a torque is applied from a drive gear 9 a of the rotary drive device 9 to rotate the rotary ring 7. 7 rotates. In addition,
S is a support frame for the rotating ring 7. FIG. 4 (A) to (C)
In, the mechanical micro switch 14 is attached to a drive lever (not shown) driven by a spring (not shown) or the like, and the ring position detection roller 11 is attached near the micro switch 14 and is always The outer peripheral side wall 7a of the rotating ring 7 is brought into contact with and rotated. On the other hand, the origin dock 15 is fixed to the rotating ring 7 by screwing or the like.

[0003]

By the way, the prior art has the following problems due to the above configuration. The free end 14b of the spring plate 14a of the microswitch 14 shown in FIG. 4 has a semicircular shape, and the cam portion 15a of the origin dock 15 for operating the spring plate 14a has an arcuate shape. ) To (C), the rotating ring 7
However, as it rotates counterclockwise, for example, as indicated by an arrow,
The cam portion 15a of the origin dock 15 pushes up the free end portion 14b of the spring plate 14a, and the spring plate 14a activates the contact 14s to output a signal of the origin, but the stroke range of the contact 14s and the spring plate If the height of 14a is not accurately adjusted, the switch does not operate even though the lighting prism 1 has rotated and passed the origin position, so that the origin position is not detected. Further, there is a problem that the operation is not smooth due to being hooked to each other, and in the worst case, the rotation of the lighting prism is stopped. Therefore, it was necessary to sufficiently adjust the mounting position of the contact 14s. As described above, in the conventional configuration, it is difficult to always accurately detect the origin position of the daylighting prism, so that the daylighting characteristics of the daylighting device may be unstable. SUMMARY OF THE INVENTION It is an object of the present invention to provide an origin position detecting device in a solar lighting device that solves the above-mentioned problems (problems) of the conventional device.

[0004]

According to a first aspect of the present invention, there is provided a sun light detecting apparatus, comprising: a light collecting unit having one or a plurality of light collecting prisms;
In a solar lighting device in which the rotation angles of these lighting prisms are controlled in accordance with the operation of the sun, a reference position serving as an origin in an outer peripheral portion of a concentric rotating ring driven integrally with the lighting prism. An origin magnet is provided at a predetermined position, and a magnetism detecting means is provided at a predetermined position close to a rotation locus of an outer peripheral portion of the rotating ring. In this case, in place of the above configuration, the lighting prism is configured to be directly driven, and an origin magnet is provided at a reference position serving as the origin of the outer periphery of the lighting prism, and at a predetermined position close to the rotation locus of the outer periphery of the lighting prism. You may comprise so that a magnetic detection means may be provided. In these cases, the magnetic detecting means is configured using a magnetically driven microswitch or a Hall element, and follows the rotation locus of the rotating ring or the lighting prism with respect to the slider mechanism in which these magnetic detecting means are arranged. It is desirable that a ring position detecting roller or a prism position detecting roller that rotates in contact with the apparatus is also arranged.

[0005] In the origin position detecting device in the sunlight collecting device of the present invention, the magnetic force generated by the origin magnet provided on the outer periphery of the rotating ring or the lighting prism is detected by the magnetic detecting means, and the origin is contactlessly contacted. The position is detected accurately. In this case, when the magnetic detection of the origin magnet is detected by a magnetically actuated microswitch or Hall element, the origin position is detected in the form of an electric signal, respectively, which is convenient for storing the origin position.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be specifically described based on first and second embodiments of the present invention shown in FIGS. First Embodiment: In the first embodiment, the present invention is applied to a sunlight collecting device of a type in which a lighting prism whose entire configuration is shown in FIG. 3 is indirectly driven via a rotating ring. The configuration will be described with reference to FIGS. 1 (A) and 1 (B). In FIGS. 7A and 7B, a recess is formed at a reference position serving as an origin on the upper surface of a rotating ring 7 connected to the daylighting prism 1 via holders 1H ₁ , 1H _2. The origin magnet 2 is stored and placed in the recess. Note that the rotary ring 7 is driven by providing a rotary drive (not shown) similar to the conventional one shown in FIG. Reference numeral 4 denotes a slider mechanism having a substantially U-shaped cross section. The slider mechanism 4 is disposed at a position opposed to the rotary ring 7.
As shown in the drawing, the magnetic detecting means 3 is fixed to the position opposing with a small gap with a screw N, and the lower piece 4 of the slider mechanism 4 is fixed.
A ring position detecting roller 11 is provided on the upper surface of the rotary member b, and the ring position detecting roller 11 is arranged so as to rotate with the outer periphery of the rotating ring 7 in contact therewith. Reference numeral 6 denotes a spring for elastically supporting the vertical piece 4c of the slider mechanism 4 with respect to the fixed portion 5. The magnetic detecting means 3 may be constituted by a magnetically actuated microswitch or a Hall element.

In the above arrangement, the magnetic detecting means 3 disposed on the slider mechanism 4 detects the magnetic force generated by the origin magnet 2 disposed at the reference position of the rotating ring 7,
Since the origin position detection signal is output, it may be stored in a storage operation means (not shown) such as a microcomputer (CPU) for the lighting prism control device. In this case, if the magnetic detecting means is constituted by a magnetically actuated microswitch, the microswitch is actuated by detecting the magnetic force of the origin magnet 2 of the rotating ring 7 to output an origin position detection signal. When the magnetic detecting means is constituted by the above, a circuit for applying a voltage to the Hall element in advance is formed, a current is supplied to the Hall element,
By reaching the origin by the rotation of, the magnetic force generated by the origin magnet 2 is applied to the Hall element, and the origin is detected using the property that the current flowing through the Hall element changes due to the Hall effect.

FIG. 2 is a perspective view and FIG. 2B is a perspective view and FIG. 2B is a vertical sectional view of a solar lighting apparatus in which a lighting prism is directly driven. It is a front view. The difference from the first embodiment is that, instead of having the origin magnet 2 provided on the rotating ring 7, the present embodiment employs a daylighting prism as shown in FIGS. A concave portion is provided at a reference position, which is the origin of the outer peripheral portion of 1.
While storing and disposing the origin magnet 2 in this recess,
The point is that a slider mechanism 4A having the following configuration is provided at a predetermined position close to the rotation locus of the outer peripheral portion of the lighting prism 1. That is, a slider mechanism 4A similar to the slider mechanism 4 of the first embodiment is provided, and the slider mechanism 4A is located at a position close to the rotation locus of the outer peripheral portion of the lighting prism 1 with respect to the lower surface of the upper piece 4a '. A magnetic detecting means 3 for detecting a magnetic force generated by an origin magnet 2 provided and outputting an origin detection signal is provided, and a lower piece 4b 'of a slider mechanism 4A.
On the upper surface of the prism position detecting roller 11a, following the rotation locus of the daylighting prism 1, comes into contact with the outer periphery and rotates.
Was arranged. Also in this case, the magnetic detection means 3
What is necessary is just to comprise with a micro switch or Hall element of a magnetic operation. The slider mechanism 4A is provided with a spring 6
Thus, the fixing portion 5 is elastically supported. Although not shown, a gear is formed on the outer peripheral portion of the daylighting prism 1, and it is assumed that a driving gear for applying a torque to the gear and a rotation driving means such as a motor are separately provided. Also in the present embodiment, the magnetic detection means 3 disposed on the slider mechanism 4A detects the magnetic force generated by the origin magnet 2 disposed at the reference position of the lighting prism 1, and converts the origin position detection signal into an electric signal. Since this detection signal is output in the form of a microcomputer (CP
U) or the like may be stored in a storage operation means (not shown). In this case, when the magnetic detecting means is constituted by a magnetically actuated microswitch, the microswitch is actuated by detecting the magnetic force of the origin magnet 2 of the daylighting prism 1 to generate an origin position detection signal. When the detection means is configured, a circuit for applying a voltage to the Hall element in advance is formed, a current is applied to the Hall element, and the rotation of the lighting prism 1 reaches the origin position, and the magnetic force generated by the origin magnet 2 is generated. By applying the current to the Hall element, the origin position is detected using the property that the current flowing through the Hall element changes due to the Hall effect.

The origin position detecting device in the sunlight collecting device of the present invention is not limited to the above embodiments. For example, in the above-described embodiment, the origin magnet 2 is disposed on the upper surface of the rotating ring 7 or the peripheral portion of the lighting prism 1, and in response to this, the magnetic detecting means 3 is provided with the upper piece of the slider mechanism 4 or 4A. However, instead of this, the origin magnet 2 is arranged on the lower surface side of the outer periphery of the rotating ring 7 or the lighting prism 1, and the magnetic detecting means 3 is arranged on the slider mechanism 4 or It is also possible to detect the origin position by inverting the upper piece 4a of 4A and providing it at a position facing the origin magnet 2 on the rotating ring 7 or the lower surface of the daylighting prism 1. Note that, in each of the above embodiments, the case where the number of the daylighting prism constituting the daylighting daylighting device is one has been described. However, the present invention can be applied to a daylighting daylighting device provided with two or more daylighting prisms. In such a case, an origin position detecting device including an origin magnet and magnetic detecting means may be provided for each lighting prism.

[0010]

The origin position detecting device in the sunlight collecting device according to the present invention has the following excellent effects since it is configured as described above. Since the detection of the origin position is performed by detecting the magnetic force, the operation of the magnetic detection means at the time of detection of the origin position does not cause a situation such as an increase in the rotational torque of the lighting prism or the rotating ring. The origin position detecting device may be configured by a slider mechanism provided with an origin magnet and a magnetic detecting means, so that the configuration is simplified and the cost can be reduced as compared with the conventional one. Unlike the conventional one, it is not necessary to adjust the mounting position of the origin switch, so that the assembling work is easy and the workability is improved. In addition, even when using a magnetically driven microswitch or using a Hall element as the magnetic detection means, the origin position detection signal required for controlling the sunlight collecting device can be appropriately output in the form of an electric signal, This is convenient for storage by a CPU or the like.

[Brief description of the drawings]

FIGS. 1A and 1B show a daylighting prism indirectly-driven solar daylighting device via a rotating ring according to a first embodiment of the present invention, wherein FIG. 1A is a perspective view and FIG. Is a vertical sectional front view.

FIG. 2 shows a daylighting prism direct-drive type solar daylighting device according to a second embodiment of the present invention.
1 is a perspective view, and FIG. 1B is a longitudinal sectional front view.

FIG. 3 is a plan view showing the overall configuration of a conventional daylighting prism indirectly driven solar lighting device.

FIG. 4 is a plan view of a main part of a portion of a conventional sunlight collecting device in which a micro switch of an origin position detecting device is disposed, and FIG. 4A shows a state before the micro switch is operated, and FIG. ) Indicates the active state of the microswitch,
FIG. 3C shows the state after the operation of the microswitch.

[Explanation of symbols]

 1: Daylighting prism 2: Origin magnet 3: Magnetic detection means 4, 4A: Slider mechanism 5: Fixed part (daylighting device main body) 6: Spring 7: Rotating ring 11: Ring position detecting roller 11a: Prism position detecting roller

Claims (6)

[Claims] 1. A solar lighting device comprising one or more lighting prisms in a lighting unit, wherein the rotation angle of these lighting prisms is controlled in accordance with the operation of the sun. That the reference magnet which is the origin in the outer peripheral portion of the concentric rotating ring that is to be driven is provided, and the magnetic detecting means is provided at a predetermined position close to the rotation locus of the outer peripheral portion of the rotating ring. Characteristic origin position detection device in sunlight lighting device. 2. A solar lighting device comprising one or more lighting prisms in a lighting unit, wherein the rotation angles of these lighting prisms are controlled in accordance with the operation of the sun. An origin magnet is provided at a reference position serving as an origin of the portion, and a magnetic detection unit is provided at a predetermined position close to a rotation locus of an outer peripheral portion of the lighting prism. . 3. An origin position detecting device according to claim 1, wherein said magnetic detecting means comprises a magnetically actuated microswitch. 4. The origin position detecting device according to claim 1, wherein said magnetic detecting means is constituted by a Hall element. 5. A slider mechanism is disposed at a position facing the rotating ring, and the magnetic detecting means is disposed on the slider mechanism, and the slider mechanism follows the rotation locus of the rotating ring and contacts the outer periphery thereof. 5. The origin position detecting device according to claim 1, wherein a rotating ring position detecting roller is also arranged. 6. A slider mechanism is disposed at a position opposed to said lighting prism, said magnetic detecting means is arranged on said slider mechanism, and follows the rotation locus of said lighting prism and contacts with the outer periphery thereof to rotate therewith. 5. The origin position detecting device according to claim 1, wherein a prism position detecting roller is provided.