JP2002161611A - Lighting adjustment device and roof lighting device - Google Patents

Abstract

(57) [Summary] [Problem] To provide a lighting adjustment device that can be easily attached to an existing building, and a roof that can reduce the temperature rise in the room and the uneven illuminance of the floor immediately below the lighting unit. A surface lighting device is provided. A daylighting adjusting device (1a) including a daylighting adjusting plate (2) provided with a heat ray reflective layer (4) and a visible light adjusting layer (5) via a transparent plate (3). This daylighting adjusting device 1a constitutes a roofside daylighting device by providing a heat ray reflective layer 4 on the indoor side of a daylighting window provided on a roof surface of a building so as to face the daylighting window.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting control device provided in a building and a roof lighting device using the lighting control device.

[0002]

2. Description of the Related Art As a method of introducing natural light into a building, a wall lighting method and a roof lighting method have long been adopted. In these methods, a lighting window in which a glass plate or a synthetic resin plate is inserted is provided on a wall surface or a roof surface, and natural light is introduced into the interior of a building from the lighting window. Among these lighting methods, in the wall lighting method, the lighting place is limited to the vicinity of the wall surface, and the illuminance is relatively small. On the other hand, the roof surface lighting method is also used for lighting the central part of the building and the illuminance is relatively large.
It is often used in halls with a large building area and multi-story factories.

However, in the above-mentioned roof lighting method,
When a transparent glass plate or a transparent synthetic resin plate is used for the daylighting window, sunlight is directly radiated into the room, and therefore, when the amount of sunlight is large, such as in summer, the room temperature rises significantly. Therefore, it is not suitable for a lighting method in a place where temperature control is required, such as a factory handling precision equipment. Also, sunlight may be directly radiated into the room and reach the floor. In this case, the illuminance of the floor surface at that portion becomes large, and for example, the optical sensor for controlling the device arranged in the factory may malfunction due to the sunlight.

When a low-transparency glass plate such as a frosted glass plate or a synthetic resin plate is used for the daylighting window, the illuminance of sunlight can be reduced to some extent. Alternatively, since the light passes through the synthetic resin plate, it is impossible to prevent a rise in indoor temperature. Further, it is unavoidable that the illuminance of the floor surface directly irradiated becomes larger than the illuminance of the surrounding floor surface.

[0005] In order to prevent heat rays from transmitting indoors, there is also a method in which a heat ray reflecting film is attached to the outdoor side of a glass plate or a synthetic resin plate of a lighting window. However, in this method, the heat ray reflective film is deteriorated by the influence of the weather and the like, and may be peeled off from the glass plate or the synthetic resin plate. In addition, the visible light transmitted through the heat ray reflective film is directly radiated to the floor surface, and the illuminance of the floor surface in that portion is increased.

[0006] Japanese Patent Application Laid-Open No. 58-189441 and Japanese Patent Application Laid-Open No. 62-148775 disclose devices for preventing sunlight from being irradiated indoors in the summer. In these devices, a prism is provided on the roof surface, and the prism totally reflects the sunlight in summer, and the sunlight is introduced into the room at times other than summer. However, these devices still have a problem that the illuminance of the floor surface to which the sunlight taken from the prism is irradiated is larger than the illuminance of the surrounding floor surface. In addition, any of the devices using the above-mentioned prisms are used when a new building is installed, and when they are used for an existing building, the remodeling work is extensive.

[0007]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a lighting adjustment device which can be easily attached to an existing building, and to use the same to reduce the temperature rise in a room and the uneven illuminance on the floor. It is an object of the present invention to provide a roof lighting device that can be reduced in size.

[0008]

The gist of the present invention resides in the following daylighting adjusting device (1) and daylighting device (2).

(1) A lighting adjustment device including a lighting adjustment plate provided with a heat ray reflection layer and a visible light adjustment layer via a transparent plate.

(2) On the indoor side of a daylighting window provided on the roof surface of a building, the daylighting adjusting device described in (1) above is provided with a heat ray reflective layer provided on the roof facing the daylighting window. Surface lighting device.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A lighting adjustment device and a roof lighting device according to the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing an example of the lighting adjustment device of the present invention. In FIG. 1, a lighting adjustment device 1 includes a lighting adjustment plate 2, a sash 6, and a hanging hand 7.

The lighting adjustment plate 2 includes a flat transparent plate 3 made of glass or synthetic resin, a heat ray reflective layer 4 attached to the upper surface of the transparent plate 3, and a visible light attached to the lower surface of the transparent plate 3. And a light adjusting layer 5.

The transparent plate 3 holds the heat ray reflection layer 4 and the visible light adjusting layer 5 and also has the heat ray reflection layer 4 described below.
Has the role of transmitting visible light that has passed through. For example, a net-like holder may be used as long as it simply holds the heat ray reflective layer 4 and the visible light adjusting layer 5. However, in this case, the transmitted visible light is irradiated in a net-like manner, and, for example, the illuminance of the irradiated floor surface becomes non-uniform.

Further, if only visible light is transmitted, the transparent plate 3 may not be provided between the heat ray reflective layer 4 and the visible light adjusting layer 5 and may be held with an air layer interposed therebetween. Good. However, in this case, there is a problem in durability since the heat ray reflective layer 4 and the visible light adjusting layer 5 are bent and deformed during use.

The heat ray reflecting layer 4 is a layer for transmitting most of the visible rays having a wavelength of about 1 μm or less and reflecting most of the heat rays having a wavelength of about 1 μm or more out of the sunlight. A film having a transmittance of about 60% or more and a transmittance of heat rays of about 40% or less is preferable. As such a heat ray reflective layer 4, for example, a dielectric film made of a coating of a metal oxide such as tin oxide can be used.

The visible light adjusting layer 5 is a layer for reflecting a part of the visible light transmitted through the heat ray reflective layer 4 to adjust the amount of visible light transmitted.
It is composed of a film having a half mirror effect of about 60%.

Sashes 6 are provided on both sides of the lighting adjustment plate 2 to support the lighting adjustment plate 2. The hanging hand 7 is for attaching the lighting adjustment device 1 to, for example, a roof surface.
A plurality of sashes 6 are provided in the longitudinal direction.

When the sunlight is radiated from the heat ray reflection layer 4 side, the daylighting adjustment device 1 causes the heat ray reflection layer 4 to reflect most of the radiated sunlight and part of the visible light, A part of the visible light transmitted through the heat ray reflective layer 4 is reflected by the visible light adjusting layer 5. Therefore, most of the sunlight is removed from the sunlight passing through the lighting adjustment device 1,
And the amount of visible light is adjusted.

FIGS. 2 to 5 are front views showing other examples of the lighting adjustment plate constituting the lighting adjustment device 1 shown in FIG.
The lighting adjustment plate 2a shown in FIG. 2 includes flat transparent plates 3, 3a, 3b made of glass or synthetic resin, a heat ray reflective layer 4 provided between the transparent plates 3 and 3a, The visible light adjusting layer 5 is provided between the transparent plate 3 and the transparent plate 3b.

The daylighting adjustment plate 2b shown in FIG. 3 has a flat transparent plate 3 made of glass or synthetic resin having a heat ray reflection layer 4 adhered on the upper surface, and a flat transparent plate 3 having a visible light adjustment layer 5 adhered on the upper surface. The transparent plate 3b is formed by laminating the transparent plate 3 and the transparent plate 3b with the visible light adjusting layer 5 interposed therebetween.

The daylighting adjustment plate 2c shown in FIG. 4 has a flat transparent plate 3 made of glass or synthetic resin having a heat ray reflection layer 4 adhered on its upper surface, and a flat transparent plate 3 having a visible light adjustment layer 5 adhered on its lower surface. The transparent plate 3c is formed by directly overlapping the transparent plate 3 and the transparent plate 3c.

The daylighting adjustment plate 2d shown in FIG. 5 has a flat transparent plate 3a made of glass or synthetic resin with a heat ray reflection layer 4 stuck on the lower surface, and a flat transparent plate 3a with a visible light adjustment layer 5 stuck on the lower surface. The transparent plate 3 and the transparent plate 3a are overlapped with the heat ray reflective layer 4 interposed therebetween.

The lighting adjustment plates 2a, 2a shown in FIGS.
b, 2c and 2d are provided in place of the lighting adjustment plate 2 of the lighting adjustment device 1 shown in FIG. 1 and constitute the lighting adjustment device 1 together with the sash 6 and the hanging hand 7.

FIG. 6 is a perspective view showing another example of the lighting adjustment device of the present invention. In the figure, the lighting adjustment device 1a
Is composed of a lighting adjustment plate 2, a sash 6, a hanging hand 7, and an upper sash 8.

The lighting adjustment device 1a shown in FIG. 1 includes two lighting adjustment plates 2 having the same structure as the lighting adjustment plate 2 shown in FIG.
It is supported by the two sashes 6 and the upper sash 8 in a substantially "F" shape. A plurality of suspenders 7 are provided in the longitudinal direction of the sash 6. This lighting adjustment device 1a prepares two pieces of the lighting adjustment device 1 shown in FIG. 1 from which one side sash 6 and the hanging hand 7 are removed, and replaces the removed one side sash 6 with one common upper sash 8. Can be assembled using

FIG. 7 is a perspective view showing another example of the lighting adjustment device of the present invention. In the figure, the lighting adjustment device 1b
Is composed of a lighting adjustment plate 2e, a sash 6, and a hanging hand 7. The daylighting adjustment plate 2e includes a curved transparent plate 3e made of glass or synthetic resin, a heat ray reflection layer 4 attached to a convex surface of the transparent plate 3e, and a visible light adjustment layer attached to a concave surface of the transparent plate 3e. 5 Since the lighting adjustment device 1b is the same as the lighting adjustment device 1 shown in FIG. 1 except that the transparent plate 3e is curved, detailed description is omitted.

In the daylighting adjusting device 1b,
The lighting adjustment plate 2e shown in FIGS.
a, 2b, 2c, 2d flat transparent plates 3, 3a, 3b,
Instead of 3c, a lighting adjustment plate formed of a curved transparent plate can be used.

FIG. 8 is a schematic view showing an example of the roof lighting device of the present invention. In FIG. 1, a lighting window 12 having a width W and a predetermined pitch A is formed on a roof surface 11. The lighting window 12 is supported on the roof surface 11 by support beams 13 provided on both sides thereof. Under the support beam 13, a receiving beam 14 is provided.
Are provided in the longitudinal direction of the lighting window 12.

The daylighting adjusting device 1a is provided with each daylighting window 1
2 is supported by the receiving beam 14 via a suspender 15 by the suspender 7 with the heat ray reflective layer 4 facing the
Are provided in the longitudinal direction. In addition, one roof lighting device 10 is configured by the one lighting window 12 and the plurality of lighting adjustment devices 1 a arranged to face the lighting window 12.

The size and inclination angle β of the two lighting adjustment plates 2 of the lighting adjustment device 1a constituting the roof lighting device 10
In order that the sunlight S emitted from the daylighting window 12 may not be directly emitted into the room, and the visible light reflected by the daylighting adjustment plate 2 may be almost uniformly emitted on the indoor side of the roof surface. , The incident angle α of the sunlight S radiated from the lighting window 12, the width W of the lighting window 12, the arrangement interval B between the lighting window 12 and the lighting adjustment plate 2, and the like.

In particular, in order to equalize the indoor illuminance in summer when the sunlight S is strong, the size of the lighting adjustment plate 2 of the lighting adjustment device 1a is determined based on the incident angle α of the sunlight S to the lighting window 12 in summer. It is preferable to determine the height and the inclination angle β. In the case where a plurality of roof lighting devices 10 are provided, the lighting adjustment plates are so arranged that the visible light rays reflected by the lighting adjustment plates 2 of the adjacent lighting adjustment devices 1a are substantially evenly distributed on the indoor side of the roof surface. 2, the arrangement pitch of the lighting windows 12 and the arrangement interval between the lighting window 12 and the lighting adjustment plate 2 are preferably set.

In FIG. 8, a receiving beam 14 is attached to a supporting beam 13 which supports a lighting window 12 which is a part of a structure of a building.
It can be attached by welding, high tension bolts or the like. For this reason, by attaching the receiving beam 14 to the support beam 13 from the indoor side of the existing daylighting window 12 and attaching the hanging hand 7 of the daylighting adjustment device 1a to the receiving beam 14 via the hanging member 15, the existing building Even so, the roof lighting device of the present invention can be configured.

The roof lighting device 1 configured as described above
In the case of 0, when the sunlight is irradiated from the lighting window 12, most of the sunlight is first reflected by the heat ray reflection layer 4 of the lighting adjustment device 1a, so that the temperature rise in the room is prevented. The visible light transmitted through the heat ray reflective layer 4 and the transparent plate 3 is partially reflected by the visible light adjusting layer 5 toward the roof surface, so that the illuminance of the floor surface to which the visible light directly reaches and the surrounding floor surface The difference from the illuminance is reduced. In addition, since visible light reflected on the indoor side of the roof surface acts as indirect illumination, unevenness in illuminance on the floor surface is further reduced.

In the roof lighting device 10 shown in FIG.
Although the lighting adjustment device 1a shown in FIG. 7 was used, a lighting adjustment device 1b shown in FIG. 7 may be used. In this case, the radius of curvature and the size of the curved transparent plate 3e are set to be equal to the angle of incidence α of the sunlight S to the building and the distribution of the lighting window 12 as in the case of using the lighting adjustment device 1a shown in FIG. What is necessary is just to determine by setting pitch A and the space | interval B of the lighting window 12 and the transparent plate 3e. Since the lighting adjustment device 1b includes the curved transparent plate 3e, the weight of the device can be reduced as compared with the flat transparent plate 3 shown in FIG.

In the daylighting adjusting device 1a shown in FIG.
The angle formed by the two lighting adjustment plates 2 is set according to the shape of the upper sash 8, and two sets of the lighting adjustment device 1 shown in FIG. 1 from which the hanging hand 7 provided on one sash 6 is removed are prepared. Then, the sash 6 on the side from which the hanging hand has been removed can be connected by a hinge to form a lighting adjustment device in which the angle formed by the two lighting adjustment plates 2 can be adjusted.

[0036]

According to the lighting adjustment device of the present invention, it can be easily attached to an existing building. In addition, according to the roof lighting device using this lighting device, most of the solar rays directly irradiated from the lighting portion are reflected and the visible light is dispersed, so that the indoor temperature rise and the lighting portion It is possible to reduce the unevenness of the illuminance generated on the floor immediately below.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of a lighting adjustment device of the present invention.

FIG. 2 is a front view illustrating another example of a lighting adjustment plate included in the lighting adjustment device illustrated in FIG. 1;

FIG. 3 is a front view illustrating another example of a lighting adjustment plate included in the lighting adjustment device illustrated in FIG. 1;

FIG. 4 is a front view showing another example of the lighting adjustment plate included in the lighting adjustment device shown in FIG.

FIG. 5 is a front view showing another example of a lighting adjustment plate included in the lighting adjustment device shown in FIG. 1;

FIG. 6 is a perspective view showing another example of the lighting adjustment device of the present invention.

FIG. 7 is a perspective view showing another example of the lighting adjustment device of the present invention.

FIG. 8 is a front view showing an example of a roof lighting device of the present invention.

[Explanation of symbols]

 1, 1a, 1b: lighting adjustment device, 2, 2a, 2b, 2c, 2d, 2e: lighting adjustment plate, 3, 3a, 3b, 3c, 3e: transparent plate, 4: heat ray reflective layer, 5: visible light adjustment Layer: 6: sash, 7: hanging hand, 8: upper sash, 10: roof lighting device, 11: roof surface, 12: lighting window, 13: support beam, 14: receiving beam, 15: hanging tool.

Claims (2)

[Claims] 1. A lighting adjustment device comprising a lighting adjustment plate provided with a heat ray reflection layer and a visible light adjustment layer via a transparent plate. 2. The lighting adjustment device according to claim 1, wherein the heat ray reflective layer is provided on the indoor side of the lighting window provided on the roof surface of the building so as to face the lighting window. And a roof lighting device.