JPH07286758A - Solar light collector - Google Patents

Abstract

PURPOSE:To effectively use solar light and heat by installing a slender light collector at a solar light converging position or along its vicinity via a linear Fresnel lens, and regulating positions of the collector and the lens in response to a solar light incident angle change with lapse of time in season and one day. CONSTITUTION:A slender light collector 2 is installed at a solar light converging position or along its vicinity via a linear Fresnel lens. In this case, a pair of arms 4 are supported rotatably in vertical and lateral directions to a pair of supports, and coupled to both ends of the liner light collector 2 in a lateral direction and both ends of the lens 1 in lateral and vertical directions. The arm 4 is so regulated based on the angle of deflection a from south to north and the angle of deflection beta' from east to west of a solar light incident direction (beta' is an angle of deflection satifying the relation tan beta'= tan beta.cos alphawhere beta is the angle of deflection from the east to the west) as to bring into coincidence with a solar light incident direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sunlight concentrating device which efficiently condenses sunlight by a relatively simple device and uses it.

[0002]

2. Description of the Related Art Various developments have been made on a device that collects sunlight and uses its heat generation, or a technique that collects sunlight to obtain electric energy by photoelectric conversion.
In any case, it is essential that the concave mirror or the lens (including both the Fresnel lens and the ordinary lens) efficiently converge the sunlight and irradiate it on the light receiving surface.

However, the position of the sun not only changes from the east direction to the west direction during the day from sunrise to sunset, but also changes from the south direction to the north direction depending on the season, and these changes cause the incidence of sunlight. The angle is 2
It will change dimensionally.

In response to such a change in the incident angle of the sun's rays, as an example of the conventional technique, the direction toward the sunlight of the condenser lens or condenser reflecting mirror is changed in response to the change of the season and the day. According to a predetermined calculation formula, it was rotated and changed sequentially.

However, when a linear Fresnel lens having a long width or a long width is used to converge the sunlight in a line shape, the direction of the lens toward the sunlight is sequentially rotated according to the incident angle conversion. Change requires a considerable space, and a large rotation moment is required to rotate the lens according to a change in the angle of the day, which is extremely inconvenient to control.

In view of such a situation, in concentrating sunlight by a linear Fresnel lens, as shown in FIG.
There is a configuration in which a plurality of line-shaped light collectors 2 having a V-shaped cross-section on the light-receiving surface of the light collector are arranged to cope with a change in angle due to changes in seasons and time of day.

However, in the configuration shown in FIG. 1, the focal point of the sunlight does not always exist on the light receiving surface 21 of the condenser 2 or in the vicinity thereof, and the sunlight is condensed at a high density, or It is insufficient in that high temperature heat collection is possible, and there is a drawback that the area of the light collecting surface is large and the burden on the economic cost is large.

On the other hand, the applicant filed an application prior to the present application with a structure in which one of the linear Fresnel lens and the condenser is fixed and the condenser is moved in accordance with the change in the incident angle of the sunlight. This is superior to the prior art in that the design cost is lower and the device can be moved in a relatively compact space, but a linear Fresnel lens or a condenser is required. Depending on the condition of the space where the optical device is arranged, there may be a case where a sufficient space for moving only one of the light collector and the linear Fresnel lens cannot be secured.

[0009]

DISCLOSURE OF THE INVENTION The present invention overcomes the problems of the prior art as described above, and collects sunlight in a high density in spite of its relatively simple device, which enables efficient solar heat generation. It is an object of the present invention to provide a device that enables use or use of photoelectric change due to sunlight.

[0010]

In order to solve the above-mentioned problems, the structure of the present invention is such that a condenser having an elongated shape is installed along the sunlight converging position by a linear Fresnel lens or its vicinity, and A solar light concentrating device based on adjusting the positions of the light concentrator and the linear Fresnel lens in response to a change in the incident angle with the change of the season of light and a change in the incident angle with the passage of time of the day. Consists of.

First, the principle of the configuration of the present invention will be described.

FIG. 2B shows a change in incident angle in the north-south direction of solar rays due to a change in season.

The lateral width direction of the linear Fresnel lens 1 and the line-shaped condenser 2 is set to a direction (east-west direction) orthogonal to the sunlight at the autumn and equinoxes, and the linear Fresnel lens 1 and the condenser 2 are set in a seasonal manner. If the incident direction of sunlight is deviated from the spring equinox and the autumn equinox in the north-south direction by the angle α according to the change, the focal position of the linear Fresnel lens 1 becomes 2 exists on both the linear Fresnel lens 1 and the condenser 2 in the longitudinal direction (this is referred to as the X direction) ΔX ₁₁ , Δ.
When only X _{21 is} moved, it is necessary to satisfy ΔX ₁₁ , ΔX ₂₁ = F sin α (F: focal length of linear Fresnel lens) (note that the linear Fresnel lens 1 in FIG. The center point in the vertical direction is S
_The relative displacement is indicated by moving from position ₀ to S ₁ . However, in FIG.
Since the clockwise direction <direction of the summer solstice> is set as a positive direction, the counterclockwise direction <direction of the winter solstice> is a negative direction, and the magnitude of the above-mentioned ΔX ₁ has both positive and negative values. Can be taken. This also applies to the following mathematical formulas. ).

On the other hand, if the linear Fresnel lens 1 is moved by ΔY ₁₁ and the condenser 2 is moved by ΔY _{21 in} the focal direction of the linear Fresnel lens 1 (this is referred to as the Y direction) by the above movement, the focus is changed. The position is F (1
Since the focal length is reduced by −cos α), ΔY ₁₁ +
It is necessary to satisfy ΔY ₂₁ = F (1-cosα).

In FIG. 2B, the horizontal width direction of the Fresnel lens (in FIG. 2B, the X axis and Y axis). However, this shows the angular direction at noon on each day.

The angle α in FIG. 2B will be described in order to explain the angle change of the sunlight depending on the time change of the day.
The incident light is β in the east-west direction.
FIG. 2 (a) shows a state in which the angle is deviated only by.

However, FIG. 2A shows Y which is orthogonal to the XY plane.
Since it is the Z plane and the incident light of sunlight is deviated from the YZ plane by an angle α, the declination β itself cannot be expressed in FIG. Instead, by projecting this onto the plan view of FIG.
There is no choice but to express it by an argument β ′ that satisfies β ′ = tan β · cos α.

In this case, the change of the focus position in the Z direction is Fs.
Since a Inbeta, when the incident light in the east-west direction is argument by beta, linear Fresnel lens 1 is △ Z _1, if the collector 2 is moved by _{△ Z 2, △ Z 1 +} △ Z 2 =
It is necessary to satisfy Fsinβ.

Here, the change in the focal position in the X and Y directions when the sun ray deviates by β from the noon position will be examined. The focal length of is reduced by cosβ times in FIG.

Therefore, when the incident light of the sun is deviated by α compared with the case of autumnal equinox and spring equinox, and when the incident light of the sun is deviated by β compared with the case of noon, the vertical width ( When the linear Fresnel lens 1 moves by ΔX ₁₂ and the condenser 2 moves by ΔX ₂₂ per (width in the X direction), ΔX
It is necessary to satisfy ₂₁ + ΔX ₂₂ = Fcosβsinα (note that in FIG. 2B, the center point of the longitudinal width of the linear Fresnel lens 1 is from S ₁ to S _2).
To indicate the relative displacement. ).

Similarly, if the moving distances in the Y direction of the linear Fresnel lens 1 and the condenser 2 in the focal direction in the above case are ΔY ₂₁ and ΔY ₂₂ , respectively, ΔY ₂₁ + Δ
It is necessary to satisfy Y ₂₂ = F (1-cos α cos β).

Here, in the case of performing light collection from 8:00 to 16:00, which is the most efficient light collection throughout the year, −60 ° ≦ β ≦ 60 °, and the time t and β are The relationship of

Β = 15 (12-t) (where, t is a variable representing time).

On the other hand, the average range in Japan of the declination from the spring equinox and autumn equinox to the winter solstice and summer solstice is −23.5 ° ≦ α ≦ 23.5 °.

At the time of 36 ° north latitude, the horizontal direction of the line Fresnel lens 1 is set to the east-west direction, and the focal direction is set to the incident direction of the autumnal and spring equinox sun rays.
When the displacements in the X and Y directions corresponding to the change in angle on the day are obtained, according to the science chronology, the angle of the sunlight with the horizontal plane at noon at 36 ° north latitude is as shown in FIG. It is 65 °.

Therefore, since α = 65 °-(90 ° -36 °) = 11 °, when the case shown in FIG. 3 is applied to the states shown in FIGS. 2A and 2B, Δ X ₂₁ + ΔX ₂₂ = Fsin 11 ° cos (12-
t) 15 ° ΔY ₂₁ + ΔY ₂₂ = F {1-cos 11 ° · cos
(12-t) 15 °} ΔZ ₁ + ΔZ ₂ = Fsin (12-t) 15 °.

In FIG. 3, since the focal direction of the linear Fresnel lens coincides with the incident direction of sunlight at the autumn equinox and the equinox, the focal direction projected on the horizontal plane is the true south direction, and The vertical width direction and the horizontal angle of the linear Fresnel lens 1 coincide with the north latitude (36 °).

However, the angle cannot be set as shown in FIG. 3 depending on the installation conditions. For example, as shown in FIG. 4, the vertical width direction and the horizontal direction of the linear Fresnel lens 1 are set at 36 ° north latitude. When the angle (in the XY plane) is 30 °, and the focal direction of the linear Fresnel lens 1 is projected on the horizontal plane, as shown in FIG. 5, when installed in a state of facing south-southeast. Does not represent the focal direction of the linear Fresnel lens 1 and the sunlight incident direction display at noon in the equinox or autumn equinox.

In such a case, the adjustment distances in the vertical width direction, the horizontal width direction and the focus direction of the linear Fresnel lens 1 must be calculated based on a standard different from the case of FIG.

When the deviation angles α and β of the linear Fresnel lens 1 shown in FIGS. 4 and 5 on August 21 are obtained, α = 65 °-(90 ° -30 °) = 5 ° β = (12−t) × 15 ° −22.5 °, so that when fitted to the state of FIG. 2 (a) and (b), ΔX ₂₁ + ΔX ₂₂ = Fsin5 ° cos {( 12-
t) 15 ° -22.5 °} ΔY ₂₁ + ΔY ₂₂ = F [1-cos 5 ° cos {(1
2-t) 15 ° -22.5 °}] ΔZ ₁ + ΔZ ₂ = 250 sin {(12-t) 15 °-
22.5 °}.

With reference to the above-mentioned general principle and its example, description will be given below in accordance with an embodiment.

[0032]

[Embodiment 1] Embodiment 1 shows a configuration in which the position of the condenser is faithfully adjusted according to changes in the deviation angles α, β of the incident light.

That is, as shown in FIGS. 6A and 6B,
The pair of supporting portions support a pair of arms 4 in a state of being rotatable in the vertical and horizontal directions, and the arms 4 support both ends of the linear collector 2 in the lateral width direction and both ends of the linear Fresnel lens 1. The arms 4 are rotatably coupled in the vertical direction, and the direction of the arm 4 is adjusted to be the same as the incident direction of sunlight in accordance with the changes in the deflection angles α and β (note that in FIG. 6,
The argument β itself cannot be expressed, and tan β ′ = ta
Similar to the case of FIG. 3, the expression must be expressed by β ′ satisfying nβ · cosα. ).

The arrangement of the linear condenser 2 and the linear linear Fresnel lens 1 is designed so that the position of the condenser 2 is the focal length of the linear Fresnel lens 1. By adjusting the angle of the arm 4, the displacement of the condenser is ΔX ₂₁ + ΔX ₂₂ , ΔY ₂₁ + ΔY.
₂₂ and ΔZ ₁ + ΔZ ₂ are satisfied.

The incident light of sunlight changes slowly in the north-south direction due to the change of seasons, whereas it changes rapidly in the east-west direction due to the time change of the day.

Therefore, although the angle .alpha. Can be manually adjusted, it is appropriate to change the angle of the arm .beta. By an automatic device (not shown) according to the change of time. .

[0037]

Second Embodiment In the first embodiment, the adjustment is performed by rotating the arm 4 in the lateral width direction of the line-shaped light collector 2 in accordance with the change in the deflection angle β. If the length of the condenser 2 is designed to be large, it is not necessary to adjust the position of the linear Fresnel lens 1 depending on the deviation angle of the incident light of sunlight in one day.

Focusing on this point, in the second embodiment, as shown in FIGS. 7A and 7B, the arm 4 is rotatably supported by a pair of supporting portions, and the arm 4 is linearly fresneled. Both ends of the lens 1 in the lateral width direction and two lateral positions of the linear collector 2 are rotatably coupled to each other,
In order to support the condenser 2 and the linear Fresnel lens 1 in a movable state along the arm, the arm 4 is provided with a long hole 41.

The condenser 2 is designed to be longer than the lateral width direction of the linear Fresnel lens 1, and the arm 4 can be displaced along the deflection angle α, but the angle can be adjusted along the deflection angle β. No (this part is different from that of Example 1).

Instead, the driving cam 5 drives the condenser 2 and the linear Fresnel lens 1 in accordance with the displacement of β, and the sum of ΔY ₁₂ and ΔY _{22 in} the Y direction is F (1-cosαsin).
If it is moved along the long hole 41 of the arm 4 so as to be β), the sum of ΔX ₂₁ and ΔX 22 in the X direction is also F cos β sin α, and the condenser 2 exists at the focal position of sunlight. Will be adjusted.

The drive cam 5 according to the second embodiment is the linear concentrator 2 or the protruding portions at both ends of the linear Fresnel lens 1.
Is provided, and the linear Fresnel lens 1 moves while being supported in the elongated hole 51 according to the change of the deviation angle α.

In the second embodiment as well, although it is possible to manually adjust the angle of the arm according to the deviation angle α of the incident angle of sunlight due to the change of seasons, an automatic device is used for the movement of the drive cam. It is reasonable to use (not shown).

[0043]

[Third Embodiment] In the third embodiment, as shown in FIGS. 8A and 8B, the Z direction of the linear collector 2 is designed to be sufficiently long, and the arm is designed according to the declination α. The point of adjusting the angle and the point of having the drive cam 5 for adjusting the position in the focal direction are the same as those of the second embodiment.

However, the drive cam 5 in the third embodiment is movably installed on the arm 4 as shown in FIG. 8B, and is independent of the arm 4 as in the second embodiment. The drive cam 5 itself is not provided with the elongated hole 51 for moving the linear Fresnel lens 1 and the condenser 2.

The coordinates of the condenser 2 on the XY plane with the origin at an intermediate position between the linear Fresnel lens 1 and the condenser 2 in FIG. 8 are P (F / 2cosβsinα, F / 2c).
osβcosα), and the coordinates of the linear Fresnel lens 1 are Q (-Fcosβsinα, -Fcosβcos).
α).

Therefore, since QP = Fcosβ, in Example 3, the deviation of the incident light of the sunlight of one day along the arm 4 regardless of the value of the deviation angle α (regardless of the change of season). By moving the drive cam in accordance with the angle β, it becomes possible to collect sunlight on the condenser 2 (in this sense, the third embodiment is more driven than the second embodiment. 5
Is easy to control. ).

Also in the third embodiment, the angle of the arm can be manually adjusted according to the deviation angle α, but the drive cam 5 is adjusted by using an automatic device (not shown). Relevance is the same as in the first and second embodiments.

[0048]

Fourth Embodiment In each of the first, second and third embodiments, a linear condenser 2 is used.

However, in the fourth embodiment, as shown in FIG.
As shown in (a) and (b), the light receiving surface 21 of the condenser 2 is shown.
The cross-sectional view of the plane in the XY direction is substantially V-shaped, the angle of the substantially V-shaped is (180 ° -α °), and the angle of the light-receiving surface 21 with respect to the vertical width direction of the linear Fresnel lens 1 is α /. In the case of 2, if the position of the linear Fresnel lens 1 having a V-shaped cross section is adjusted in the Y direction according to the deflection angle β, the focus of sunlight is automatically focused to a substantially V-shaped cross section. It exists on the surface of the container 2.

This point is that, in the XY plan view shown in FIG. 9B, if the central portion P of the cross section of the light collector 2 having a substantially V-shaped cross section is at the position (0, F / 2 cos β). The sunlight rays incident due to the deflection angle α have a light receiving surface 2 having a substantially V-shaped cross section.
The position R of the coordinates intersecting with 1 is (F / 2 cos β sin α,
F / 2cosβcosα), which is exactly ΔX ₁₂ = −F / 2cos in the X direction of the linear Fresnel lens 1.
Displaced by β sin α and ΔY ₁₂ = −F / 2 in the Y direction
When it is displaced by (1-cosβcosα), the condenser 2 is displaced by ΔX ₂₂ = F / 2cosβsinα in the X direction and ΔY ₁₂ = F / 2 (1-cosβco in the Y direction.
It will be clear from the fact that it is nothing but the position displaced by sα).

That is, in the fourth embodiment, if the angle of the light receiving surface 21 having a substantially V-shaped cross section is manually changed according to the seasonal deviation angle α, the deviation angle β due to the change of time of day is obtained. On the other hand, it becomes possible to focus the sun rays on the light receiving surface at the focal position of the Fresnel lens only by adjusting the condenser 2 and the linear Fresnel lens 1 in the Y direction.

[0052]

Fifth Embodiment In the fifth embodiment, although the adjustment is performed based on the deviation angle (α) of the incident light due to the change of the season, the adjustment is not performed based on the deviation angle (β) of the incident light due to the time change of the day. An example is shown.

The light receiving surface of the light collector is designed in the lateral direction as shown in FIG. 10 (a) so as to have an arc shape in which the linear Fresnel 1 side is recessed, and as shown in FIG. 10 (b). The light receiving surface 21 of the light collector 2 is designed to be wide in the vertical direction.

In this case, what is designed on the circular arc is shown in FIG.
As shown in (a), the focus is closest to the Lini Fresnel lens at sunrise and sunset, and the farthest position at noon, so it should be as close to the focus at each time as possible. This is because the light receiving surface is designed.

The size of the diameter of the arc is not particularly specified, but as shown in FIG. 10 (a), the east and west end portions where the sunlight converges at 9:00 am and 3:00 pm and the east and west directions. When it is determined by the three positions of the central position where the sunlight converges at noon, it is possible to position the light receiving surface 21 in the vicinity of the focal point of the sunlight for almost all day.

In the fifth embodiment, it is impossible to design the light receiving surface 21 to be wide in the vertical direction so that all the light receiving surfaces 21 are in the focal position at each time, and In the case of deviation, it is based on the fact that sunlight illuminates the light receiving surface with a constant vertical width.

Also in the fifth embodiment, a pair of arms 4 are rotatably supported by the pair of support portions in the longitudinal width direction of the linear Fresnel lens, and the arm 4 is supported by the linear Fresnel lens 1.
Is connected to both ends in the horizontal width direction and the condenser 2 in a freely rotatable state in the vertical width direction.

The arrangement relationship between the linear Fresnel lens 1 and the condenser 2 is designed so that the position of the condenser 2 is approximately the focal length of the linear Fresnel lens 1 (from the original, the deviation angle β Since the position of the condenser is not adjusted in accordance with the above, and the condenser itself has an arc shape as described above, even if the distance from the coupling portion with the linear Fresnel lens 1 is exactly matched with the focal length, It doesn't mean much.)

In the above structure, by shifting the angle of the arm in the vertical direction in accordance with the angle of deviation (α) due to the seasonal variation, it is possible to collect sunlight with good efficiency.

[0060]

Sixth Embodiment In each of the above embodiments, the linear Fresnel lens 1 adjusts its position in the front-rear direction and the lateral width direction while maintaining the parallel state with the condenser 2.

However, when the sun rays enter the linear Fresnel lens in an oblique direction, the luminous flux condensed by the linear Fresnel lens is smaller than that in the case where the linear Fresnel lenses are orthogonal to each other, and the aberration of the light at the focal point is also. It has the disadvantage of being large.

In order to solve this point, conventionally, a structure has been implemented in which a linear Fresnel lens is revolved around a condenser.

However, revolving a linear Fresnel lens having a considerable width in the lateral direction requires a large space and requires a complicated apparatus.

In the sixth embodiment, the linear Fresnel lens itself is arranged so that the surface of the linear Fresnel lens is orthogonal to the incident light ray in accordance with the change of the incident angle of sunlight, the change of the time of day, or the passage of time of one day or both. Figure 11 (a),
As shown in (b), a configuration is adopted in which it rotates in response to a change in the incident angle (note that FIG. 11 shows a case in which the incident angle changes in one day, and in FIG. The following shows the case in accordance with the change of.

The structure for rotating the linear Fresnel lens can be performed simultaneously with the movement of the linear Fresnel lens in the front-back direction and the lateral width direction as shown in Examples 1 to 5, and can be used in combination with each of the above-mentioned examples. It is a composition.

[0066]

Seventh Embodiment A seventh embodiment is different from the sixth embodiment in that the linear Fresnel lens is rotated, and the light receiving surface of the light receiver is rotated according to the change of the incident angle of sunlight.

Generally, in photoelectric conversion, when the light receiving surface is at or near the focal point, the temperature of the light receiving surface becomes too high, and the efficiency of the material undergoing photoelectric conversion decreases.

In order to avoid this, the light-receiving surface is intentionally shifted from the focal length, or the uneven surface of the linear Fresnel lens is designed so that two focal points are produced, as shown in FIGS. However, it is conceivable that the light receiving surface is arranged at a portion where both ends intersect (indicated by a point Q in FIGS. 12A and 12B).

In such a case, when the width of the light receiving surface in the lateral direction has a certain limit, when the light is obliquely directed to the sunlight, the collected sunlight is received as shown in FIG. Loss will be caused by not irradiating the surface.

On the other hand, when the light receiving surface is oriented in a direction perpendicular to the incident sunlight due to rotation,
As shown in (a), the loss area becomes narrow.

Furthermore, when the linear Fresnel lens and the light-receiving surface are both designed to be orthogonal to the incident sunlight by applying the technique of Example 6, the loss area is further reduced, and The light flux to be condensed also increases.

[0072]

As described above, according to the present invention, not one of the linear Fresnel lens and the condenser is moved, but both of them are moved. Therefore, the required moving space for each is small, Moreover, it is possible to design the sunlight to converge on the surface of the light collector or in the vicinity thereof, and thus it becomes possible to efficiently collect the sunlight.

Moreover, the present invention has various advantages over the prior art, and its value is immense.

[Brief description of drawings]

FIG. 1 is a perspective view showing a concentrator used in a conventional solar collector using a linear Fresnel lens.

FIG. 2A is a side view showing the displacement of the linear Fresnel lens in the lateral width direction and the focal direction according to the time change of the day.

[FIG. 2 (B)] Side view FIG. 2B shows the displacement in the vertical direction and the focal direction of the linear Fresnel lens at the position of the focal point of sunlight according to the seasonal variation.

[Fig. 3] Cross-sectional view The declination α on August 21 is shown at a point of 36 ° north latitude.

[Fig. 4]

FIG. 5 is a cross-sectional view of the linear Fresnel lens at a latitude of 36 ° north latitude, which has an inclination of 30 ° to the horizon with respect to the north-south direction, and the angle of the focal direction projected on the horizontal plane is south-southeast (22.5 ° from the south). August 21 when installed on the east side)
The declination angles α and β of the day are shown.

[Fig. 6 (a)],

FIG. 6 (b)] A longitudinal width direction side sectional view and a lateral width direction side sectional view showing the constitution of Example 1.

[Fig. 7 (a)],

FIG. 7B is a vertical width direction side sectional view and a horizontal width direction side sectional view showing the configuration of the second embodiment.

[Fig. 8 (a)],

FIG. 8B is a vertical width direction side sectional view and a horizontal width direction side sectional view showing the configuration of the third embodiment.

[Fig. 9 (a)],

FIG. 9B is a vertical width direction side sectional view and a horizontal width direction side sectional view showing the configuration of Example 4.

[Fig. 10 (a)],

FIG. 10B is a vertical width direction side sectional view and a horizontal width direction side sectional view showing the configuration of the fifth embodiment.

[Figure 11 (a)]

FIG. 11B is a vertical cross-sectional view and a horizontal cross-sectional view showing the configuration of the sixth embodiment.

[Fig. 12 (a)],

FIG. 12 (B)] A lateral cross-sectional view showing the structure of Example 7

[Explanation of symbols]

 1: Linear Fresnel lens 2: Condenser 21: Light receiving surface 3: Incident light ray 4: Arm 41: Long hole of arm 5: Drive cam 51: Long hole of drive cam

Claims (9)

[Claims] 1. An elongated concentrator is installed along or near the converging position of sunlight by a linear Fresnel lens having a line of concavo-convex stripes in the lateral direction, and the incident angle according to the seasonal change of sunlight. A solar light concentrating device that adjusts the positions of the light collector and the linear Fresnel lens in response to the change and the change in the incident angle with the passage of time of one day. 2. A pair of arms rotatably supported in a vertical and horizontal direction on a pair of supporting portions are provided at both ends of the linear Fresnel lens in the lateral width direction and at two positions in the lateral width direction of the linear condenser. Each of them is rotatably coupled in the up, down, left, and right directions so that the focus of the linear Fresnel lens exists at the position of the condenser, and the positions of the condenser and the linear Fresnel lens are adjusted by this. The sunlight condensing device according to claim 1, wherein 3. A pair of arms are supported by a pair of supporting portions in a rotatable state in the vertical width direction of the linear Fresnel lens,
The arm is movably supported at both ends of the linear Fresnel lens in the widthwise direction and at two positions in the widthwise direction of the line-shaped concentrator, respectively, and the incident angle of the sun light with the passage of time 2. The position of the condenser and the linear Fresnel lens is adjusted by providing a drive cam for moving the condenser and the linear Fresnel lens according to the change of 1. The described solar concentrator. 4. The light receiving surface of the concentrator is designed to be substantially V-shaped on the sunlight side, and the concentrator and the linear Fresnel are responded to as the incident angle of the sunlight changes with time. The lens position is adjusted in the focal direction, and the size of the angle at the center of the V-shaped light receiving surface is adjusted according to the change in the incident angle due to the change of the season of the sun. The sunlight concentrating device according to claim 1. 5. The surface of the concentrator is designed to have an arc shape that is recessed toward the linear Fresnel lens side, and is designed to have a width in the vertical direction, and a pair of arms is arranged in the vertical width direction by a pair of supporting portions. It is rotatably supported, and the arm is coupled to both ends of the linear Fresnel lens in the widthwise direction and two positions in the widthwise direction of the light collector in a freely rotatable manner in the lengthwise direction, and incident with the change of the season of sunlight. The sunlight concentrating device according to claim 1, wherein the rotation angle of the arm in the vertical width direction is adjusted according to the change in the angle. 6. The sunlight concentrating device according to claim 1, wherein the linear Fresnel lens is rotated in accordance with the incident angle of sunlight. 7. The sunlight concentrating device according to claim 1, wherein the light receiving surface of the concentrator is rotated about the incident angle of the sunlight. 8. The sunlight concentrating device according to claim 1, wherein the position of the sunlight is adjusted by using an automatic device in response to a change in incident angle of sunlight with a change over time in one day. 9. The sunlight concentrating device according to claim 1, wherein the position is manually adjusted with respect to a change in incident angle of sunlight due to a change in season.