JP5580693B2 - Daylighting equipment - Google Patents

Description

  The present invention relates to a daylighting apparatus that guides light taken from an outdoor daylighting unit to an indoor side through an irradiation unit provided on an indoor ceiling surface.

  Conventionally, there has been proposed a daylighting apparatus that takes in sunlight from a daylighting unit provided outside a building and irradiates indoors with sunlight taken in from an irradiation unit provided on an indoor ceiling surface. In addition, a daylighting apparatus having an outdoor and indoor ventilation function has been proposed.

Japanese Utility Model Publication No. 6-58027 JP-A-6-131904

  However, the sunlight taken from the daylighting unit is guided to the irradiation unit while reflecting the wall surface in the light guide path leading to the irradiation unit provided on the indoor ceiling, but the wall surface unit in the light guide path is a cross. It is often finished and attenuates when reflected by the inner wall surface of the light guide path, and it is difficult to guide enough sunlight indoors.

  Moreover, the sunlight taken in indoors from an irradiation part irradiates only directly under an irradiation part, and the nonuniformity of the indoor brightness by the difference in the irradiation amount of sunlight has arisen with the peripheral part of the irradiation part. In particular, when the outdoor daylighting unit and the indoor irradiating unit are connected by a substantially vertical light guide path, the reflection direction of the sunlight is the light guide path traveling direction in the process of sunlight reflecting the wall surface in the light guide path. Therefore, the indoor brightness unevenness was remarkable.

  In view of the above problems, the present invention takes in sunlight from a daylighting unit provided outside a building, and takes in sunlight taken in from an irradiation unit provided on an indoor ceiling surface. It is an object of the present invention to provide a daylighting apparatus that can be guided without being attenuated and without causing unevenness of brightness, and further, a daylighting apparatus having a ventilation function between the outdoors and indoors.

  The above-described problem is a daylighting apparatus that guides sunlight taken from an outdoor daylighting unit to an indoor side through an irradiation unit provided on an indoor ceiling surface, and is in a light guide path from the daylighting unit to the irradiation unit. This is solved by a daylighting device characterized in that a reflecting material is provided on the wall surface, and a diffusing member for diffusing the guided light into the interior is provided in the irradiating portion.

  In this daylighting device, since the reflecting material is provided on the wall surface in the light guide path from the daylighting section to the irradiation section, the sunlight taken in from the daylighting section is attenuated in the process of reflecting in the light guide path. Without being guided to the irradiation part. In this specification, the fact that sunlight is not attenuated means that not only when the brightness of sunlight is not attenuated but also when the sunlight is reflected on the wall surface, It is used to include cases where the attenuation rate is low.

  In addition, since the irradiating unit is provided with a diffusing member that diffuses the guided light indoors, the sunlight taken from the daylighting unit is guided to the irradiating unit while being reflected by the light guide path on the wall surface. Since the light irradiation direction is converged in the process, the light can be diffused and irradiated indoors through the diffusing member, so that uneven brightness in the indoor can be prevented.

  In the above daylighting apparatus, the diffusing member may be attached to the irradiation unit so as to be substantially flush with the ceiling surface.

  Since the diffusing member is attached to the irradiation section so as to be substantially flush with the ceiling surface, the light guiding path of the daylighting device can be blinded by the diffusing member, and the design of the ceiling surface is made clean. be able to.

  In the above daylighting device, the daylighting unit and the diffusing member can be ventilated and can be ventilated between outdoors and indoors.

  Since the daylighting unit and the diffusing member can be ventilated, it is possible to ventilate between the outdoors and indoors through the light guide path, and it is also possible to ventilate the outdoors and indoors while being a daylighting device that takes sunlight into the indoors. .

  Further, when the diffusing member is a milky white acrylic plate, the captured sunlight can be effectively diffused.

  Since the present invention is as described above, sunlight is taken in from the daylighting unit provided outside the building, and the sunlight taken in from the irradiation unit provided on the indoor ceiling surface is attenuated indoors. In addition, it is possible to provide a daylighting device that can be guided without causing unevenness of brightness, and further, a daylighting device having a ventilation function between the outdoors and indoors.

FIG. 1A is a cross-sectional side view showing a daylighting apparatus according to the first embodiment of the present invention, and FIG. FIG. 1A is a cross-sectional side view showing a daylighting apparatus according to a second embodiment of the present invention, FIG. 2B is a cross-sectional side view showing a diffusing member, and FIG. Fig. (A) is a cross-sectional side view showing the state of refraction of sunlight in the diffusing member, Fig. (B) is a cross-sectional side view showing the state of sunlight intake and air ventilation of the daylighting device, and It is a side view. FIG. 1A is a sectional side view showing a daylighting apparatus according to a third embodiment of the present invention, FIG. 2B is a sectional side view showing a diffusing member, and FIG. Figure (a) is a cross-sectional side view showing the sunlight intake and air ventilation status of the daylighting device. Figure (b) is a partially enlarged cross-sectional side view of the figure (b) showing the sunlight reflection state in the frame. It is.

  Next, embodiments of the present invention will be described with reference to the drawings.

  In the daylighting apparatus 1 according to the first embodiment of the present invention shown in FIG. 1A, 2 is a daylighting unit, 3 is an irradiation unit, 4 is a light guide path, 5 is a reflector, and 6 is a diffusing member.

  For example, the daylighting apparatus 1 is provided between the roof surface 7 of a house and the ceiling surface 8 of a living room or a hallway. The daylighting device 1 is provided on the ceiling surface 8 by taking in sunlight from the daylighting unit 2 provided on the roof surface 7. The sunlight is guided indoors from the irradiation unit 3.

  In FIG. 1, 9 is a roof material, 10 is a roof base material, 11 is a rafter that supports the roof base material, 12 is a frame that supports the daylighting unit, and 13 is a water stop between the frame 12 and the roof surface 7. It is a waterproof sheet for.

  The wall surface 15 constituting the light guide path 4 is fixed to the base material 14, and the indoor ceiling surface 8 is configured by a ceiling surface material 17 fixed to the ceiling surface base material 16.

  In the present embodiment, the roof surface 7 is formed with a gradient so as to incline downward from the ridge to the eaves, and the daylighting unit 2 is also provided on the roof surface 7 with a gradient along with the roof surface 7. The ceiling surface 8 is formed so as to be horizontal in the height direction, and the irradiation unit 3 is also provided on the ceiling surface 8 so as to be horizontal in the height direction together with the ceiling surface 8. As shown in FIG. 1A, the light guide path 4 connecting the daylighting unit 2 and the irradiation unit 3 is formed so that the ridge side wall surface 15a and the eaves side wall surface 15b are in a non-parallel state.

  A reflecting material 5 for reflecting the sunlight taken in from the daylighting unit 2 and guiding it to the irradiation unit 3 is attached to the wall surface 15 constituting the light guide path 4. Here, in order to increase the reflection efficiency, for example, a white highly diffuse reflection film having a reflectance of 90% or more is used.

  In the irradiating unit 3, a diffusing plate as a diffusing member 6, which is a flat plate substantially equal to the opening size of the irradiating unit 3, is arranged on the ceiling surface 8 through the parting material 18 so that the ceiling surface 8 is substantially flush. It is fixed to. In order to sufficiently transmit and diffuse sunlight, for example, a milky white acrylic plate having a transmittance of about 90% is used as the diffusion plate.

  As shown in FIG. 1 (b), the daylighting device 1 is taken in from the daylighting unit 2 because the reflecting material 5 is provided on the wall surface 15 in the light guide path 4 from the daylighting unit 2 to the irradiation unit 3. The sunlight 20 is guided to the irradiation unit 3 without being attenuated in the process of reflecting in the light guide path 4.

  Further, the irradiating unit 3 is provided with a diffusion plate as a diffusion member 6 for diffusing the guided light indoors, and the guided light is incident on the diffusion plate and emitted from the diffusion plate. Since light is refracted by the diffusing plate, the light irradiation direction is converged in the process in which the sunlight 20 taken in from the daylighting unit 2 is guided to the irradiation unit 3 side while being reflected by the wall surface 15 of the light guide path 4. Since the light can be diffused and irradiated indoors through the diffusion plate, uneven brightness in the indoor can be prevented.

  Furthermore, since the diffusion plate as the diffusion member 6 is attached to the irradiation unit 3 so as to be substantially flush with the ceiling surface 8, the light guide path 4 of the daylighting device 1 can be blinded by the diffusion plate, The design of the ceiling surface 8 can be made clean.

  In the daylighting apparatus 25 according to the second embodiment of the present invention shown in FIG. 2 (a), 26 is a diffusing member. In addition, the same code | symbol is attached | subjected to the element which is common in 1st Embodiment.

  As shown in FIGS. 2B and 2C, the diffusing member 26 includes a plurality of circular cylindrical diffusing rods 27 having a circular cross section, the length direction of which is horizontal, and the diffusing members 26 are arranged in parallel at intervals. ing. Reference numeral 28 denotes a frame for fixing the plurality of cylindrical diffusion rods 27... To the irradiation unit 3 on the ceiling surface 8. The cross-sectional shapes of the respective cylindrical diffusion rods 27 are not necessarily the same, but here, the cylindrical diffusion rods having the same cross-sectional shape are employed. The intervals between the cylindrical diffusion rods 27 are not necessarily the same, but here, all the intervals are the same, and the intervals are approximately the same as the circular cross section of the cylindrical diffusion rods 27. For the cylindrical diffusion rod 27, for example, a milky white cylindrical acrylic rod having a transmittance of about 90% is used in order to sufficiently transmit and diffuse sunlight.

  As shown in FIG. 3A, the sunlight 20 taken in from the daylighting unit 2 and guided through the light guide path 4 is incident on the cylindrical diffuser rod 27 and emitted from the cylindrical diffuser rod 27. Since the sunlight 20 is sometimes refracted by the cylindrical diffusion rod 27, the sunlight 20 is diffused by the diffusing member 26 constituted by the cylindrical diffusion rod 27 and is irradiated indoors, so that uneven brightness in the indoor can be prevented. Can do.

  Further, as shown in FIGS. 3B and 3C, the diffusion member 26 has a plurality of cylindrical diffusion rods 27 arranged at intervals, so that the cylindrical diffusion rods 27. Since the air can be ventilated through the gap, the air 28 can be ventilated through the diffusion member 26 and the daylighting unit 2 can be opened and closed, so that the light guide path between the daylighting unit 2 and the irradiation unit 3 can be opened. 4, the outdoor and indoor ventilation can be performed, and the daylighting device 25 can not only capture the sunlight 20 from the outside but also perform ventilation. In the figure, 28 indicates the flow of air.

  In the daylighting apparatus 35 according to the third embodiment of the present invention shown in FIG. 4 (a), 36 is a diffusing member. In addition, the same code | symbol is attached | subjected to the element which is common in 1st Embodiment.

  As shown in FIGS. 4B and 4C, the diffusing member 36 is formed by a flat plate-shaped diffusing plate 37 slightly smaller than the opening size of the irradiating section 3 and a frame 38 surrounding the periphery thereof. The planar shape of the diffusing member 36 including 38 is set to be slightly larger than the opening size of the irradiation unit 3. The upper surface of the frame 38 has an inclined surface 39 that is inclined downward toward the outside, and the inclined surface 39 can reflect sunlight with high efficiency. Therefore, for example, the inclined surface 39 may be formed of a high-efficiency reflecting plate, or a high-efficiency reflecting film may be attached to the base material of the inclined surface 39. As shown in FIG. 4A, the diffusion member 36 is attached to the lower surface of the irradiation unit 3 so that a gap is formed between the diffusion member 36 and the ceiling surface 8. For example, the frame body 38 of the diffusing member 36 may be suspended by the wires 40 hanging from the ceiling surface 8. For the diffusion plate 37, for example, a milky white acrylic plate having a transmittance of about 90% is used in order to sufficiently transmit and diffuse sunlight.

  As shown in FIG. 5 (a), the sunlight 20 taken from the daylighting unit 2 and guided through the light guide path 4 can be diffused by the diffusion member 36 and irradiated indoors. Unevenness of brightness can be prevented.

  Further, as shown in FIG. 5 (a), in the daylighting device 35, since it is attached to the lower surface of the irradiation unit 3 so as to form a gap between the diffusion member 36 and the ceiling surface 8, the diffusion member 36 and Ventilation can be performed between the ceiling surfaces 8 through a gap, and the daylighting unit 2 can be opened and closed, so that the outdoor side of the daylighting unit 2 and the irradiation unit 3 can be opened via the light guide path 4. The daylighting device 35 can ventilate not only the sunlight 20 from the outside but also ventilate. In the figure, 28 indicates the flow of air.

  Further, as shown in FIG. 5 (b), a part of the sunlight 20 taken in from the daylighting unit 2 and guided through the light guide path 4 is reflected by the inclined surface 39 of the frame 38 of the diffusing member 36. In addition, since the ceiling surface 8 around the irradiation unit 3 is irradiated, the sunlight 20 can be reflected also to the ceiling surface 8, and the sunlight 20 can be taken into the room indoors with a soft impression as indirect light. Further, since the inclination of the frame body 38 is inclined downward toward the outside, when the diffusion member 36 is viewed from the indoor side, the thickness of the diffusion member 36 can be suppressed by the inclination of the frame body 38, It can be set as a daylighting device that looks clean.

  Although the embodiment of the present invention has been described above, the present invention is not limited to this, and various modifications can be made without departing from the spirit of the invention. For example, in the above-described embodiment, the case where there is an irradiating part immediately below the daylighting part on the roof surface is shown. However, the irradiating part is not limited to just below the daylighting part, and may be at a different position in the horizontal direction. The light guide path from the daylighting unit to the irradiating unit does not have to be a straight line, and may be bent in the middle, such as an L shape or a U shape. Moreover, it is not limited to the inclined roof surface about the attachment position of a lighting part, You may provide in a flat roof and may provide in the wall surface of a building perpendicular direction.

  Moreover, there is no limitation on the shape of the diffusion plate as the diffusion member, and it may be a diffusion plate with an irregular cross section having different cross-sectional thicknesses at the center portion and the end portion, or even if unevenness is formed on the surface portion of the diffusion plate. In short, what is necessary is that incident sunlight is diffused and emitted by refraction.

DESCRIPTION OF SYMBOLS 1,25,35 ... Daylighting device 2 ... Daylighting part 3 ... Irradiation part 4 ... Light guide path 5 ... Reflector plate 6 ... Diffusing plate (diffusion member)
7 ... Roof surface 8 ... Ceiling surface

Claims (2)

Irradiation unit provided on the indoor ceiling surface with sunlight taken from an outdoor daylighting unit provided with a gradient in addition to the roof surface formed with a gradient so as to incline downward from the ridge to the eaves A daylighting device that leads indoors through
The inner wall surface of the light guide path from the daylighting section to the irradiation section is formed such that the ridge side wall surface and the eaves side wall surface are in a non-parallel state, and the light guide path inner wall surface is provided with a reflective material,
The irradiation unit is provided with a diffusion member that diffuses the guided light indoors ,
The diffusing member is formed by a flat plate-shaped diffusing plate slightly smaller than the opening size of the irradiating portion and a frame body having an inclined surface in which an upper surface surrounding the diffusing member is inclined downward toward the outside,
The diffusion member is attached to the lower surface of the irradiation unit so as to form a gap between the diffusion member and the ceiling surface,
A daylighting apparatus, wherein the daylighting unit and the diffusing member can be ventilated, and can be ventilated between outdoors and indoors . The daylighting apparatus according to claim 1 , wherein the diffusion member is a milky white acrylic plate.

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