JPH0610406Y2 - Sunlight tracking lighting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a sunlight tracking and daylighting device that irradiates a house whose sunlight is blocked by a high-rise house with sunlight.

[Background Art] Conventionally, as shown in FIG. 18, a sunlight tracking daylighting device 100 is installed on the roof of a building 106, and the sunlight L is reflected by a reflecting surface 102 of the sunlight tracking daylighting device 100 to receive the sunlight L. Lighting is done in places that are out of reach.

However, as shown in FIG. 19, when the sun S moves and the sun S and the lighting position P are on the same side with respect to the wall surface 108 of the building 106, the sunlight L reflected by the sunlight tracking and lighting device 100 is There is a problem in that the main body 110 of the sunlight tracking daylight collecting apparatus 100 irradiates the daylighting position P, and a shadow of the main body 110 is generated at the daylighting position P.

[Purpose of device]

An object of the present invention is to provide a sunlight tracking daylighting device in which a shadow of the device body does not occur at a daylighting position.

[Disclosure of device]

The sunlight tracking daylighting device of the present invention has a device body installed on the upper end of the wall of a building and a reflecting surface that is rotatably attached to the device body about a horizontal axis and a vertical axis and reflects sunlight on the front surface. A sunlight reflecting device, a drive device for changing the azimuth angle and the altitude angle of the sunlight reflecting device, and a state in which the sun and the daylighting position are located on opposite sides of the wall surface or the sun and the wall surface. It is determined whether the lighting positions are both located on the same side, and when the sun and the lighting position are located on opposite sides of the wall surface, the reflecting surface of the sunlight reflecting device is oriented toward the device body, and the wall surface In contrast, when the sun and the lighting position are both located on the same side, the reflecting surface of the sunlight reflecting device is reversed with a predetermined hysteresis so that the reflecting surface faces in the opposite direction to the device body. Let Reflection surface position determination unit, a calculation unit that calculates the azimuth angle and altitude angle of the normal axis of the reflection surface that can illuminate sunlight to the predetermined lighting position from the position of the sun and the predetermined lighting position, and the calculation A control device including an output unit that outputs a result, and a signal amplification unit that receives an output signal from the control device and drives the driving device to change the angle of the sunlight reflecting device so as to be able to illuminate at the lighting position. It is equipped with and.

According to the configuration of this invention, with respect to the wall surface of the building in which the device body is installed at the upper end, when the sun and the lighting position are located on the opposite sides, the reflecting surface of the sunlight reflecting device is the device body side, When both the sun and the lighting position are located on the same side with respect to the wall surface, a reflection surface position determination unit is provided that sets the reflection surface on the opposite side to the apparatus body. Therefore, when the sun and the lighting position are located on the opposite side, the sunlight reflected by the reflecting surface of the sunlight reflecting device reaches the lighting position without passing through the device body, and the sun and the lighting position are on the same side. In that case, the reflecting surface is oriented toward the device body so that the sunlight reflected by the reflecting surface does not pass through the device body in this case as well. As described above, it is possible to prevent the shadow of the device body from being generated at the lighting position.

Embodiment An embodiment of the present invention will be described with reference to FIGS. 1 to 17. As shown in FIG. 1, the solar tracking daylighting device of this embodiment has a device body 6 installed on the upper end of a wall surface 4 of a building 2 and a device body 6 which is rotatable about horizontal and vertical axes. A sunlight reflecting device 10 having a reflecting surface 10a for reflecting sunlight on the front surface of the mounting, a drive device 12 for changing the azimuth angle and the altitude angle of the sunlight reflecting device 10, and the sun S for the wall surface 4. When the lighting positions P are located on the opposite sides, the reflecting surface 10 of the sunlight reflecting device 10 is
When a is oriented toward the device body 6 and the sun S and the daylighting position P are both located on the same side with respect to the wall surface 4, the reflection surface position determination unit that causes the reflection surface 10a to face the device body 6 in the opposite direction. 14, a calculation unit that calculates the azimuth angle and altitude angle of the normal axis of the reflecting surface 10a that can illuminate the sunlight L at the predetermined lighting position P from the position of the sun S and the predetermined lighting position P, and A control device 16 including an output unit that outputs a calculation result, and an output signal from the control device 16 are received to drive the drive device 12 so that the sunlight reflection device 10 can illuminate at the daylighting position P. The signal amplification unit 18 for changing the angle is provided.

The sunlight reflecting device 10 and the driving device 12 will be described with reference to FIGS. 2 to 4. The drive device 12 includes an azimuth angle drive unit 12a and an altitude angle drive unit 12b. The sunlight reflecting device 10 is connected to the azimuth driving device 12a through a support base 26, and the driving reflecting device 2 as a whole.
Make up eight. FIGS. 2, 3, and 4 are a front view, a plan view, and a partially cutaway side view of the driving reflector 28 thus constructed.

The sunlight reflecting device 10 is configured by attaching a reflection mirror 32 made of chemically strengthened glass inside an aluminum frame 30 composed of an outer frame and a middle cross rail, and further covering a back surface with a reflection cover 34 made of an aluminum plate. There is. The reflection mirror 32 serves as a reflection surface.

As shown in FIG. 4, the azimuth angle drive unit 12 a has a pulse motor 38 installed in the main body cover 36, and a rotary shaft 40 rotated by the pulse motor 38 projects from the upper surface of the main body cover 36. In addition, the body cover 36
Is fixed to the gantry 42, and 48 is an azimuth lock unit composed of an induction motor. The azimuth lock unit 48 may be provided with a pawl (not shown) that moves up and down by the forward and reverse rotation of the induction motor, and the pulse motor 38.
The rotation of the rotating shaft 40 is locked by engaging with and disengaging from the gear provided on the rotating shaft. Further, 49 is a terminal box, which is the control device 1.
Connected to 6.

The support base 26 is connected to the upper end of the rotary shaft 40 of the azimuth drive unit 12a and rotates about the vertical axis. Support 26
Is provided with a pair of arms 44 and 46, and the solar reflector 10 is rotatably held by the pair of arms 44 and 46 about a horizontal rotation shaft 56. The rotation of the sunlight reflecting device 10 is performed by the altitude angle drive unit 12b attached to the outer surface of the arm 44. Altitude angle drive unit 12b
As shown in FIG. 2, the rotary shaft 56 is installed in the main body cover 54.
A pulse motor 50 for rotating the motor is installed, and an altitude angle lock unit 52 composed of an induction motor is further provided. Like the azimuth angle lock unit 48, a rotation shaft 56 is provided.
Lock the rotation of.

Next, the operation of this embodiment will be described based on the block diagram of FIG.

In the figure, in the control device 16, an arithmetic unit 74, a data storage unit 75, a tracking control unit 76, an operation / display control unit 77, and a wireless reception unit 78 are provided.

The computing unit 74 computes the position change of the sun by the orbital equation of the sun about once every few seconds, and obtains the altitude angle and azimuth angle of the sun. Further, based on the obtained position of the sun and the lighting position P, the azimuth angle and the altitude angle of the normal axis of the reflecting surface 10a of the sunlight reflecting device 10 for reflecting the sunlight L to the lighting position P are calculated.

The data storage unit 75 stores data such as the latitude and longitude of the installation position of the sunlight tracking and daylighting device necessary for calculating the position of the sun, the declination of the building (tilt angle with respect to the south), and the south direction. Remember.

In the tracking control unit 76, the azimuth angle and altitude angle value of the normal axis calculated by the calculation unit 74 and the current azimuth angle and altitude angle value of the current normal axis detected by the azimuth angle detection unit 79 and the altitude angle detection unit 80 are calculated. Based on the calculated amount of change in the azimuth angle and altitude angle of the normal axis of the sunlight reflecting device 10 necessary for lighting at the lighting position P, and the signal amplification unit 18 via the output unit (not shown). Output.

The operation / display control unit 77 receives a signal of data such as on / off operation of the operation unit 72, lighting position, lighting time, etc., or indicates the operating state of the device, the sun altitude,
Data signals such as azimuth, wind speed, and lighting position are output to the display unit 70.

The wireless reception unit 78 receives a signal from the wireless operation unit 8 via the antenna 96 so that the device can be remotely operated.

Here, the flow of the operation of this embodiment will be described with reference to FIG.

As shown in FIG. 7, the installation position δ of the sunlight reflecting device 10 indicates the angle between the wall surface 4 of the building 2 and the south, and is stored in the data storage unit 75.

As shown in FIG. 8, the sun position (HA) is the azimuth angle H from the south of the sun S and the altitude angle A from the horizontal plane at the installation position of the solar reflective device 10, and the calculation unit 74 Is calculated sequentially.

The lighting position data is each data of the lighting position and the lighting time, and is stored in the data storage unit 75.

Based on each of these data, the computing unit 74 computes the normal axis direction (φ, θ) of the reflecting surface 10a for lighting at the lighting position. That is, as shown in FIG. 9, the reflecting surface 10a
The azimuth angle φ from the south of the normal axis Q and the altitude angle θ are calculated from the horizontal plane. Note that the azimuth angle φ and the altitude angle θ of the normal axis Q are sequentially calculated according to the position of the sun S, which changes sequentially.

When the normal axis direction (φ, θ) of the reflecting surface 10a is calculated, the hysteresis is next determined. This hysteresis determination will be described later. After the hysteresis judgment is completed, the position of the reflecting surface is judged next and the normal axis direction (F,
Calculate T). The reflection surface position determination means whether the sun S and the daylighting position P are opposite to each other with respect to the wall surface 4 of the building 2 as shown in FIG. 10, or the wall surface 4 as shown in FIG. On the other hand, it is determined whether the sun S and the lighting position P are located on the same side, and when they are located on the opposite sides (FIG. 10), the reflecting surface 10a of the sunlight reflecting device 10 is set to the device. When they are located on the same side as the main body 6 side (FIG. 11), the reflection surface 10a is oriented in the opposite direction to the apparatus main body 6 side, and the reflection surface position determination unit 14 (the fifth surface). (Fig.) As described above, depending on the positional relationship between the sun S and the lighting position P with respect to the wall surface 4, the reflecting surface 10
The actual reflecting surface 1 obtained by reversing the direction of a
The normal axis direction (F, T) of 0a is calculated. As shown in FIG. 12, the normal axis direction (F, T) indicates the azimuth angle F from the south of the normal axis Q ′ and the altitude angle T from the horizontal plane. Note that the altitude angle T is 0 degree when the reflecting surface 10a faces the horizontal direction opposite to the apparatus body 6 as shown in FIG.

FIG. 14 shows the flow of the judgment of the position of the reflecting surface and the calculation of the direction (F, T) of the normal axis Q'of the reflecting surface after the judgment. First, in the determination I, it is determined whether the position of the sun S is on the daylighting side or the building side with respect to the wall surface 4. In this judgment I, the direction of the building 2 to the south (building declination: δ) is stored in the data storage unit in advance, and the judgment is made from the value. More specifically, depending on the value of the building declination δ, the following three cases are determined separately.

As shown in FIG. 20, in the case of −90 ° ≦ δ ≦ 90 °: If δ−90 ° ≦ φ ≦ 90 ° + δ is satisfied, the sun S is located on the daylighting side.

As shown in FIG. 21, in the case of −180 ° <δ <−90 °: If −180 ° ≦ φ ≦ 90 ° + δ and 270 ° + δ ≦ φ ≦ 180 ° are satisfied, the sun S is located on the daylighting side. ing.

As shown in FIG. 22, in the case of 90 ° <δ ≦ 180 °: If −180 ° <φ ≦ δ−270 ° and δ−90 ° ≦ φ ≦ 180 ° are satisfied, the sun S is located on the daylighting side. ing.

When the sun S is located on the building side, the sun S and the daylighting position P are located on the opposite sides of the wall surface 4, and the process II is proceeded to. Azimuth F of the normal axis Q'of the reflecting surface 10a in process II
And the altitude angle T is determined by the following equation.

F = 180 ° + φ T = − (180 ° + | θ |) When the sun S is located on the daylighting side, the wall surface 4
The sun S and the daylighting position P are on the same side with respect to
Proceed to III. In process III, the azimuth angle F and the altitude angle T of the normal axis Q'are determined by the following equations.

F = φ T = θ When the actual normal axis directions (F, T) are calculated as described above, they are sent to the control device 16 as control data.

Here, the above-mentioned hysteresis determination will be described. This hysteresis determination is based on the calculation error in the reflection surface position determination unit 14 (actually includes a calculation error of φ−0.001 ≦ φ ≦ φ + 0.001), and when φ is close to δ, The orientation can be either of the states of FIG. 10 and FIG. If such a state continues, the sunlight reflecting device 10 will repeat the reversing operation.
Therefore, in order to solve this problem, processing as shown in FIG. 15 is performed. The MODZ = 1 in the judgment IV in the figure refers to the state in which the sun S and the daylighting position P are located on the opposite sides, as shown in FIG. In this state, in the process V, δ = δ−5 · is calculated to obtain a value of δ of 5
It has a degree of hysteresis. In the state of FIG. 11, the process proceeds to step IV and δ is kept as it is.

Further, in FIG. 5, the signal amplifying unit 18 is composed of an altitude axis motor amplifying unit 83 and an azimuth axis motor amplifying unit 84, which amplifies an output signal from the control device 16 and sends it to the driving device 12 for driving. The device 12 receives and drives these amplified signals.

In addition, an instantaneous wind speed detection unit 85 and an average wind speed detection unit 86 are provided between the three cup wind speed unit 88 and the control device 16, and stop the device when the wind speed abnormally increases.

According to the sunlight tracking daylighting device configured in this way, as shown in FIG. 10, when the sun S and the daylighting position P are located on the opposite side of the wall surface 4, the reflecting surface 10a has the device body. The sunlight L that faces the 6 side and is reflected by the reflecting surface 10a reaches the lighting position P without passing through the device body 6. Further, as shown in FIG. 11, when the sunlight S and the daylighting position P are located on the same side with respect to the wall surface 4, the reflecting surface 10 a has the reflecting surface 10 a.
On the other hand, the sunlight L reflected by the reflecting surface 10a faces the opposite side and reaches the lighting position P without passing through the device body 6.
Therefore, it is possible to prevent the shadow of the device body 6 from being generated at the lighting position P.

In addition, the hysteresis determination can prevent the sunlight reflecting device 10 from repeating the reversing operation.

Furthermore, since the sunlight reflecting device 10 is rotatable about the horizontal axis and the vertical axis with respect to the device body 6, as shown in FIG. 16, the device body 6 is provided on the south side of the building 2 as shown in FIG. It can also be installed on the north side of the building 2 as shown.

[Effect of device]

According to the sunlight tracking daylighting device of the present invention, the reflection surface position determination unit allows the sun and the daylighting position to be opposite to each other with respect to the wall surface of the building where the device body is installed at the upper end, or the sun with respect to the wall surface. And the lighting position are both located on the same side, and when the sun and the lighting position are on opposite sides of the wall surface, the reflection surface of the sunlight reflecting device is oriented toward the device body and When the sun and the lighting position are both on the same side, the reflection surface of the sunlight reflecting device has a predetermined hysteresis so that the reflection surface of the sunlight reflecting device faces the opposite direction to the device body. Reverse operation.

And by inverting the reflecting surface of the sunlight reflecting device according to the positional relationship between the sun and the lighting position on the wall surface, no matter what the positional relationship between the sun and the lighting position on the wall surface is, It is possible to prevent the main body of the device to which the sunlight reflecting device is attached from entering the optical path from the sun to the predetermined lighting position via the reflecting surface. That is, when the sun and the lighting position are located on the opposite side, the sunlight reflected by the reflecting surface of the sunlight reflecting device reaches the lighting position without passing through the device body, and the sun and the lighting position are on the same side. In such a case, the reflecting surface faces the device body in the opposite direction, and in this case also, the sunlight reflected by the reflecting surface does not pass through the device body. Therefore, it is possible to prevent the shadow of the main body of the apparatus from always appearing in a predetermined lighting position, and it is possible to effectively collect light.

Moreover, since the reversing operation of the reflecting surface has a hysteresis, when the positional relationship between the sun and the lighting position with respect to the wall surface is near the critical point at which the reflecting surface of the sunlight reflecting device is reversed, the solar reflecting device It is possible to stabilize the reversing operation of the reflecting surface of the sunlight reflecting device without meaninglessly repeating the reversing operation of the reflecting surface.

[Brief description of drawings]

FIG. 1 is a schematic view of an embodiment of the present invention, FIG. 2 is a front view of the driving reflector, FIG. 3 is a plan view of the driving reflector, and FIG. 4 is a partially broken side view of the driving reflector. Figure, fifth
Figure is its block diagram, Figure 6 is a flow chart showing the flow of its operation, Figure 7 is a plan view showing its solar reflector installation position, Figure 8 is a perspective view showing its sun position, and Figure 9 is Perspective views showing the normal axis direction of the reflecting surface, FIG. 10 and FIG.
The figure is a side view showing the positional relationship between the sun and the daylighting position with respect to the wall surface, FIG. 12 is a perspective view showing the direction of the normal axis of the actual reflecting surface, and FIG. 13 is the reference line of the altitude angle of the normal axis. FIG. 14 is a side view, FIG. 14 is a flow chart showing the operation of the reflection surface position determination unit, and FIG.
16 and 17 are side views showing the installation position of the apparatus main body, FIG. 18 is a side view of a conventional example, FIG. 19 is a plan view showing its defects, and FIGS. 20 to 22 show this invention. It is explanatory drawing which shows the specific example of the judgment I of one Example. 2 ... Building, 4 ... Wall surface, 6 ... Device main body, 10 ... Solar reflective device, 10a ... Reflective surface, 12 ... Driving device, 14 ... Lighting condition setting unit, 16 ... Control device, 18 ... Signal amplifying unit, L ... Sunlight, P ... Daylighting position, S ... Sunlight

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-51-148439 (JP, A) JP-A-51-100740 (JP, A) Actual opening 60-154911 (JP, U) Actual opening 61- 148025 (JP, U) Actually opened Sho 62-104208 (JP, U) Japanese Patent Sho 55-6822 (JP, B2)

Claims (1)

[Scope of utility model registration request] 1. A device main body installed on an upper end of a wall surface of a building, and a solar reflective device having a reflecting surface for reflecting sunlight on a front surface of the device main body, which is rotatably mounted around a horizontal axis and a vertical axis. A driving device for changing the azimuth angle and the altitude angle of the sunlight reflecting device, and a state in which the sun and the lighting position are opposite to each other on the wall surface or the sun and the lighting position are the same on the wall surface. It is determined whether or not it is in a state of being located on the side, and the sun and the lighting position on the wall surface are located on opposite sides of each other, the reflecting surface of the sunlight reflecting device is oriented toward the device main body, and the sun is on the wall surface. Reflection surface position determination for reversing the reflection surface of the solar light reflection device in a state with a predetermined hysteresis so that the reflection surface faces in the opposite direction with respect to the apparatus main body when both lighting positions are located on the same side. Department and A calculation unit that calculates the azimuth angle and altitude angle of the normal axis of the reflective surface that can illuminate sunlight from the position of the sun and the predetermined lighting position to the predetermined lighting position, and an output unit that outputs the calculation result. And a signal amplifier that receives an output signal from the controller and drives the driving device to change the angle of the sunlight reflecting device so that the sunlight can be collected at the lighting position. Daylighting device.