JP2010281138A - Blind device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a blind device which can protect privacy by blocking visual lines from outdoors even at night. <P>SOLUTION: A window is provided in the outer wall of a building, and a screen device 20 is provided on the indoor side of the window. The screen device 20 includes a sheet-like screen 21, a winding pipe 22 for winding up the screen 21, and a weight bar 26 inserted into a cylindrical portion at the bottom of the screen 21. On the screen 21, a flat surface is formed along the vertical direction by the self-weight of the weight bar 26. The weight bar 26 incorporates a plurality of radiation portions 30 consisting of LEDs along the longitudinal direction. The weight bar 26 and the cylindrical portion of the screen 21 are provided with light openings, communicating the inside and outside of the weight bar 26, above the radiation portions 30. Light emitted from the radiation portions 30 is radiated upward through the light openings to shine on the screen 21. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a blind device.

  Conventionally, in a building such as a house, there is a case where a shutter device is provided in an opening portion such as a window portion mainly for crime prevention. The shutter device includes a shutter curtain including a plurality of slats, and the opening is shielded by the shutter curtain. As this type of shutter device, a device having a slat opening / closing function for opening / closing each slat has been put into practical use. In such a shutter device, since the slat can be opened with the shutter curtain closed, it is possible to obtain ventilation and lighting while ensuring crime prevention.

  However, in the shutter device having the slat opening / closing function, when the slat is opened in the closed state of the shutter curtain, there is a possibility that the indoor side can be seen from the outdoor side, and there is a problem in securing privacy. In order to solve this problem, a technique has been proposed in which a plurality of LEDs are provided on the inner surface of each slat and light is emitted from the plurality of LEDs toward the outdoor side when the slat is opened (for example, Patent Documents). 1). According to this, since the whole shutter curtain is brightly illuminated when the slat is opened, it is possible to make it difficult to see the interior from the outdoor side.

JP 2007-146395 A

  Incidentally, as a shielding means for shielding the opening, there is, for example, a roll screen device in addition to the shutter device. The roll screen device covers sunlight and the line of sight from the outside by covering the opening with a screen. Here, the screen is generally formed of a sheet member made of cloth or the like woven in a mesh shape, and can easily transmit a line of sight from the outside as compared to the slats of the shutter device. Therefore, at night, even if the screen is in a closed state, there is a possibility that the inside of the room can be seen through the screen through the screen.

  Further, the technique of Patent Document 1 is applicable only to a slat opening / closing type shutter apparatus, and cannot be applied to a roll screen apparatus that shields an opening by a single screen. Therefore, the roll screen device still has problems in terms of privacy protection when used at night.

  Such a problem is a problem that may occur not only in the roll screen device but also in the entire blind device that covers the opening with a sheet member made of cloth or the like woven in a mesh shape.

  The present invention has been made in view of the above circumstances, and has as its main object to provide a blind device capable of protecting privacy by blocking the line of sight from the outdoor side even at night. .

  In order to solve the above-mentioned problems, a blind device according to a first aspect of the present invention includes a seat member that is suspended from a building opening provided on an outer wall of a building and is disposed on the indoor side of the building opening, and the seat A blind device that shields the building opening by a member, wherein at least one of an upper end portion and a lower end portion of the sheet member is provided with irradiation means for irradiating the sheet member with light. Features.

  Since the sheet member is suspended and arranged in the blind device, the sheet surface is formed relatively flat along the vertical direction. Therefore, in the present invention, paying attention to that point, irradiation means is provided on at least one of the upper end portion and the lower end portion of the sheet member, and the sheet member is irradiated with light from above or below the sheet member. . In this case, it is possible to avoid as much as possible that the progress of the light emitted from the irradiating means is obstructed by the undulations generated in the sheet member, so that the light from the irradiating means can be spread all over the sheet member in the vertical direction. In other words, since the entire sheet member can be illuminated brightly, it is possible to block the line of sight from the outdoor side at night, and thus to protect privacy. Moreover, compared with the prior art which provided several LED for every slat, there also exists an advantage which can reduce the number of the light sources as an irradiation means significantly.

  The blind device of the second invention is characterized in that, in the first invention, a weight member is provided at a lower end portion of the sheet member.

  According to the present invention, since the weight member is provided at the lower end portion of the sheet member, the sheet member is disposed depending on the weight member's own weight, specifically, the sheet member is disposed in a state where the sheet member is pulled up and down. Is done. Therefore, it is possible to further prevent the progress of the light emitted from the irradiating means from being obstructed by the undulation generated in the sheet member, and as a result, the light from the irradiating means can be easily spread over the entire vertical direction of the sheet member. be able to.

  The blind device according to a third aspect of the present invention is the blind apparatus according to the second aspect, wherein the sheet member includes a roll screen, and a weight bar as the weight member is provided at a lower end portion of the roll screen. The weight bar is provided.

  According to the present invention, since the irradiation means is installed on the weight bar provided at the lower end portion of the roll screen, unlike the case where the irradiation means is provided on the winding pipe provided at the upper end portion of the roll screen and winding the screen. The irradiation means does not rotate when the roll screen is taken up and pulled out. For this reason, even if the roll screen has not been lowered to a predetermined position, the direction of the light emitted from the irradiation means does not change, so that the roll screen can be illuminated. Further, unlike the case where the irradiation means is installed on the winding pipe, there is an advantage that the irradiation means can be prevented from becoming an obstacle when the roll screen is wound.

  The blind device according to a fourth aspect of the present invention is the blind device according to the third aspect, wherein the weight bar has a cylindrical shape, a light source serving as the irradiation means is provided inside the weight bar, and light that emits light from the light source in the weight bar. The discharge position is variable.

  According to the present invention, the emission position of light emitted from the light source provided inside the cylindrical weight bar is variable. Thus, for example, the indoor side of the roll screen is illuminated by emitting light from the indoor position of the roll screen, the outdoor side of the roll screen is illuminated by emitting light from the outdoor side position of the roll screen, etc. It is possible to illuminate the roll screen in various ways.

  A blind device according to a fifth aspect of the present invention is based on any one of the first to fifth aspects of the invention, based on the outdoor light detection means for detecting outdoor brightness and the outdoor brightness detected by the outdoor light detection means. Control means for controlling light irradiation by the irradiation means.

According to the present invention, since the irradiation of light by the irradiation means is controlled based on the outdoor brightness,
For example, when the outdoors become dark at night, that is, when it is a time zone in which the interior illuminated by illumination can be seen from the outdoor side, the sheet member can be automatically illuminated. Thereby, the convenience can be improved in blocking the line of sight from the outdoor side.

  A blind device according to a sixth aspect of the present invention is the blind device according to the fifth aspect, further comprising indoor light detection means for detecting the brightness of the living room provided with the sheet member, wherein the control means is detected by the indoor light detection means. When the brightness of the living room is larger than the outdoor brightness detected by the outdoor light detection means, light irradiation by the irradiation means is performed.

  According to the present invention, when the brightness of the living room provided with the sheet member is larger than the outdoor brightness, the light is irradiated to the shielding means by the irradiation means. Therefore, for example, when the living room becomes brighter than the outside due to lighting in the living room at night, for example, when it is possible to see the indoor from the outdoor side, the shielding means is automatically Since it is illuminated, it is possible to improve convenience in blocking the line of sight from the outdoor side. In addition, when the living room is not illuminated even at night, light irradiation by the irradiation means is not performed, so that unnecessary irradiation can be prevented.

  In the blind device according to a seventh aspect based on the sixth aspect, the indoor light detection means detects the brightness on the indoor side of the seat member and the brightness on the outdoor side of the seat member. And adjusting the amount of light emitted from the irradiating means so that the brightness on the outdoor side of the sheet member exceeds the brightness on the indoor side of the sheet member. .

  ADVANTAGE OF THE INVENTION According to this invention, the outdoor side of a sheet | seat member can be made brighter than the indoor side of a sheet | seat member in a living room by adjusting the quantity of the light irradiated with respect to a sheet | seat member from an irradiation means. Thereby, the effect which blocks the eyes | visual_axis from the outdoor side can be improved further.

  According to an eighth aspect of the present invention, there is provided a blind device according to the seventh aspect of the present invention, in which the human detection means for detecting the presence of a person in the vicinity of the building opening outdoors, and the person detection means And irradiation mode changing means for changing the irradiation mode by the irradiation means when the presence is detected.

  According to the present invention, when a person approaches a building opening outdoors, the irradiation mode by the irradiation means is changed. Therefore, for example, the light emitted from the irradiating means blinks and the shielding means blinks to threaten a suspicious person approaching the building opening, or the amount of light emitted from the irradiating means is increased to make the shielding means brighter. Illuminating can enhance the effect of blocking the line of sight of people approaching the building opening.

  In addition, when the person detecting means detects that a person is present around the building opening in the outdoors for a predetermined time or longer, the irradiation mode by the irradiation means may be changed. In this case, since it is not detected about the resident etc. who pass just near the building opening part, false detection prevention can be aimed at.

The side view which shows a screen apparatus periphery. The perspective view which shows a screen apparatus. The longitudinal cross-sectional view which shows the structure around a weight bar. The figure which shows the electric constitution of a control system. The flowchart which shows an irradiation control process. The longitudinal cross-sectional view which shows the structure of the weight bar periphery in another example. The perspective view which shows a vertical blind.

  Hereinafter, an embodiment embodying the present invention will be described with reference to the drawings. In the present embodiment, a roll screen device (hereinafter referred to as a screen device for short) is embodied as a blind device installed on the indoor side of a building opening such as a window provided in a building such as a house. Yes. FIG. 1 is a side view showing the periphery of the screen device.

  As shown in FIG. 1, in a building 10 such as a house, a living room 15 such as a living room is provided as a space in the building. A window portion 12 as a building opening is provided in the outer wall portion 11 that partitions the living room 15 and the outdoor space. A glass door 13 that opens and closes the window portion 12 is disposed in the window portion 12, and a roll-up screen device 20 is provided on the indoor side of the glass door 13.

  The screen device 20 includes a screen 21 (corresponding to a sheet member and a roll screen) formed in a sheet shape by a cloth woven in a mesh shape, a winding pipe 22 for winding the screen 21, and the like. It is attached above the glass door 13 via a bracket 29. When the screen 21 is pulled out (lowered) from the winding pipe 22, the window portion 12 is closed, and when the screen 21 is wound (raised) by the winding pipe 22, the window portion 12 is exposed. . And in the closed state (hanging state) of the screen 21, the gaze and sunlight from the outdoors can be blocked by the screen 21.

  Next, the configuration of the screen device 20 will be described in a little more detail with reference to FIG. FIG. 2 is a perspective view showing the screen device.

  As shown in FIG. 2, the screen device 20 includes a set frame 24 formed in a long shape, and a pair of side plates 25 attached to both ends in the longitudinal direction of the set frame 24. On the back side of the set frame 24, the bracket 29 for attaching the screen device 20 to the upper side of the glass door 13 is provided.

  The winding pipe 22 is provided between the pair of side plates 25 and is rotatably supported by the side plates 25. One end (upper end) of the screen 21 is connected to the winding pipe 22, and the screen 21 is wound or sent out by rotating the winding pipe 22 in the forward direction or the reverse direction. ing. An operation chain 27 is attached to one end portion of the winding pipe 22 in the longitudinal direction. By pulling down the front part (indoor side part) or the back side part (outdoor side part) of the chain 27, the winding pipe 22 can be rotated in the forward direction or the reverse direction. That is, the screen 21 can be wound and pulled out by operating the chain 27.

  A weight bar 26 made of acrylic resin or the like is provided at the other end (lower end) of the screen 21. The weight bar 26 is a weight member formed in a long and cylindrical shape, and the screen 21 is suspended by its own weight. Specifically, the weight bar 26 has a length that is slightly longer than the horizontal width of the screen 21, and a cylindrical portion 21 a (see FIG. 3) formed at the lower end of the screen 21 with both ends protruding. ) Is inserted. End caps 28 are attached to the protruding portions of the weight bar 26, respectively, and the end cap 28 prevents the weight bar 26 from coming out of the cylindrical portion 21a. Here, since the lower end of the screen 21 is pulled downward by the weight of the weight bar 26 while the upper end of the screen 21 is fixed to the winding pipe 22, a flat surface is formed on the screen 21 along the vertical direction. Is done.

  By the way, since the screen 21 used for the screen device 20 is formed in a sheet shape with a mesh-like cloth or the like as described above, it can block the line of sight and sunlight from the outdoor side in the daytime. There is a possibility that the illumination light in the living room 15 is transmitted to the outdoor side and the inside of the living room 15 is seen through the screen 21 from the outdoor side. Therefore, in the present embodiment, the screen device 20 includes an irradiation unit that irradiates light to the screen 21, and the screen 21 is illuminated brightly by the irradiation unit, thereby blocking the line of sight from the outdoor side at night. The details will be described below with reference to FIG. 3 in addition to FIG. FIG. 3 is a longitudinal sectional view showing the configuration around the weight bar 26.

  As shown in FIG. 2, the weight bar 26 of the screen device 20 is provided with an irradiation unit 30 as irradiation means. The irradiation part 30 irradiates light with respect to the screen 21, for example, is comprised by LED (light emitting diode). The irradiation unit 30 is built in the weight bar 26, and a plurality of irradiation units 30 are provided at predetermined intervals over the entire length direction of the weight bar 26. In addition, the irradiation part 30 does not necessarily need to be comprised with LED, and may be comprised with other irradiation means, such as a fluorescent lamp and an incandescent bulb.

  As shown in FIG. 3, each irradiation unit 30 is disposed closer to the indoor side (the side opposite to the outdoor side) than the screen 21 inside the weight bar 26. In the cylindrical portion 21a of the weight bar 26 and the screen 21, light openings 33 and 34 are provided above the respective irradiation portions 30 respectively. Each of the light openings 33 and 34 is provided in a portion on the indoor side with respect to the screen 21 and is provided in a corresponding positional relationship. Therefore, the inside and outside of the weight bar 26 communicate with each other through the light openings 33 and 34. The light emitted from the irradiation unit 30 is irradiated upward through the light openings 33 and 34, and thereby the indoor side surface of the screen 21 (in other words, the surface facing the living room 15) is illuminated. Moreover, since the irradiation part 30 is provided with two or more along the longitudinal direction of the weight bar 26 as mentioned above, the whole screen 21 is illuminated by these each irradiation part 30 with substantially uniform illumination intensity. Further, each irradiation unit 30 is dimmable, and the brightness (illuminance) of the screen 21 can be changed by adjusting the amount of light emitted from the irradiation unit 30.

  In the winding pipe 22, a power feeding unit 31 that supplies power to the irradiation unit 30 is provided. The power feeding unit 31 and the irradiation unit 30 are connected by a wiring 32, and power is supplied from the power feeding unit 31 to the irradiation unit 30 through the wiring 32. The wiring 32 extends along the side end portion of the screen 21, and one end portion thereof enters the winding pipe 22 and is connected to the power feeding portion 31, and the other end portion enters the weight bar 26 and the irradiation portion 30. It is connected to the. The wiring 32 is wound or pulled out integrally with the screen 21.

  Returning to the description of FIG. 1, the living room 15 is provided with a lighting fixture 16 for illuminating the living room 15. The lighting fixture 16 includes a fluorescent lamp, an incandescent lamp, and the like, and is installed on the ceiling side of the living room 15. The lighting fixture 16 can be dimmed, and the amount of light emitted from the lighting fixture 16 to the screen 21 can be adjusted.

  The living room 15 is provided with a room illuminance sensor 37 as an indoor light detection means and a screen illuminance sensor 38. The room illuminance sensor 37 is a sensor that detects the illuminance of the room 15 on the indoor side of the screen 21 (the side opposite to the outdoor side) (hereinafter, abbreviated as “screen indoor side of the room 15 in some cases”). The room illuminance sensor 37 is provided, for example, on the wall surface of the room 15. The screen illuminance sensor 38 is a sensor that detects the illuminance of the living room 15 on the outdoor side of the screen 21 (hereinafter, abbreviated as “screen outdoor side of the living room 15” in some cases). That is, the screen illuminance sensor 38 detects the illuminance between the screen 21 and the glass door 13 in the living room 15, and is provided on the side surface of the living room 15 of the glass door 13, for example.

  The building 10 is provided with an outdoor illuminance sensor 39 as outdoor light detection means. The outdoor illuminance sensor 39 is a sensor that detects outdoor illuminance, and is provided, for example, on the outdoor side surface of the outer wall portion 11.

  The building 10 is provided with a human detection sensor 36 as human detection means. The human detection sensor 36 is a sensor that detects the presence of a person around the window portion 12 outdoors, and is installed on the outdoor side surface of the outer wall portion 11, for example.

  Next, an electrical configuration of a control system that performs irradiation control of the irradiation unit 30 in the screen device 20 will be described with reference to FIG.

  As shown in FIG. 4, the building 10 is provided with a controller 35 as control means. The controller 35 is mainly composed of a known microcomputer having a CPU or the like, and is provided on the wall surface of the living room 15, for example.

  A human detection sensor 36 as a human detection unit is connected to the input side of the controller 35. Sequential detection results are input from the human detection sensor 36 to the controller 35.

  Three illuminance sensors 37 to 39 are connected to the input side of the controller 35. Illuminance information is sequentially input to the controller 35 from each of the illuminance sensors 37 to 39.

  Each irradiation unit 30 is connected to the output side of the controller 35. The controller 35 outputs an irradiation signal to each irradiation unit 30 based on detection results from the human detection sensor 36 and the illuminance sensors 37 to 39. Thereby, light is irradiated from the irradiation unit 30 to the screen 21. Further, the controller 35 adjusts the output level of the irradiation signal output to the irradiation unit 30 based on the detection results from the room illuminance sensor 37 and the screen illuminance sensor 38. Thereby, the amount of light emitted from the irradiation unit 30 to the screen 21 is adjusted.

  Next, the irradiation control process executed by the controller 35 will be described with reference to FIG. This process is triggered by the screen 21 being pulled out (lowered) by the resident. Specifically, the screen device 20 is provided with a drawer detection sensor that detects that the screen 21 has been pulled out, and this processing is started based on the detection result input from the sensor to the controller 35. . This process is repeatedly executed at a predetermined cycle.

  First, in step S11, it is determined whether or not the living room 15 (specifically, the screen indoor side) is brighter than the outdoors. Specifically, based on the illuminance information from the room illuminance sensor 37 and the outdoor illuminance sensor 39, it is determined whether or not the illuminance on the screen indoor side of the living room 15 is larger than the outdoor illuminance. When the screen indoor side of the living room 15 is brighter than the outdoors, for example, when the living room 15 is illuminated by the lighting fixture 16 at night, the process proceeds to step S12 and an irradiation process is executed. In the irradiation process, an irradiation signal is output to each irradiation unit 30. Thereby, light is irradiated from each irradiation part 30, and the screen 21 is illuminated brightly by the light. If the irradiation process has already been executed at this time, the irradiation process is continued as it is.

  In step S13, it is determined whether the screen indoor side of the living room 15 is brighter than the screen outdoor side. Specifically, based on the illuminance information from the room illuminance sensor 37 and the screen illuminance sensor 38, it is determined whether or not the illuminance on the screen indoor side of the living room 15 is larger than the illuminance on the screen outdoor side. When the screen indoor side of the living room 15 is darker than the screen outdoor side, the process proceeds to step 15. When the screen indoor side of the living room 15 is brighter than the screen outdoor side, the process proceeds to step S14.

  In step S <b> 14, the amount of light emitted from the irradiation unit 30 is increased by increasing the output level of the irradiation signal output to each irradiation unit 30. Specifically, based on the illuminance information from the room illuminance sensor 37 and the screen illuminance sensor 38, the light emitted from the irradiation unit 30 until the illuminance on the screen outdoor side of the room 15 becomes larger than the illuminance on the screen indoor side. Increase the amount. Thereby, in the living room 15, the screen outdoor side is illuminated brighter than the screen indoor side.

  In continuing step S15, based on the detection result from the human detection sensor 36, it is determined whether the person exists around the window part 12 in the outdoors. Specifically, it is determined whether or not a person exists around the window 12 for a predetermined time (for example, 3 minutes) or longer. If no person is present around the window 12, this process ends. If there is a person around the window 12, the process proceeds to step S <b> 16 and a blinking signal is output to each irradiation unit 30. Thereby, since the light irradiated from the irradiation part 30 blinks and the screen 21 blinks, the suspicious person who wanders around the window part 12 outdoors can be threatened. Thereafter, this process is terminated. The blinking of light by the irradiation unit 30 is switched to the irradiation process in step S12 when the person is not detected by the human detection sensor 36.

  In step S11 described above, when the living room 15 is darker than the outdoors, the process proceeds to step S17, and the output of the irradiation signal to the irradiation unit 30 is stopped. Thereby, the irradiation of the light by the irradiation part 30 stops. At this time, if the irradiation by the irradiation unit 30 has already stopped, the stopped state is continued as it is. Thereafter, this process is terminated.

  As mentioned above, according to the structure of this embodiment explained in full detail, the following outstanding effects are acquired.

  In the screen device 20, the screen 21 is disposed so as to hang down due to the weight of the weight bar 26 in the closed state (suspended state), so that the screen surface is formed flat along the vertical direction. Therefore, in the above embodiment, the irradiation unit 30 is provided on the weight bar 26 provided at the lower end of the screen 21, and the screen 21 is irradiated with light by the irradiation unit 30. In this case, it is possible to avoid as much as possible the wave of light emitted from the irradiation unit 30 from being obstructed by the undulations generated on the screen 21, so that the light from the irradiation unit 30 can be spread all over the screen 21. That is, since the entire screen 21 can be illuminated brightly, even when the living room 15 is illuminated by the lighting fixture 16 at night, it is possible to block the line of sight from the outdoor side and thus protect privacy.

  Moreover, compared with the prior art which provided several LED for every slat, there also exists an advantage which can reduce the number of light sources (equivalent to the irradiation part 30) significantly.

  Further, when the window 12 side (screen 21 side) is darker than the wall or ceiling surrounding the living room 15 and there is a difference in illuminance in the living room 15, the illuminance applied by illuminating the screen 21 by the irradiation unit 30 There is also an advantage that the difference can be eliminated.

  By the way, even if the irradiation unit 30 is installed at a position away from the screen device 20 (for example, the ceiling or wall of the living room 15) and the screen 21 is irradiated with light from the position away from the screen device 20, the above effect can be obtained. If an object is placed between the screen device 20 and the irradiation unit 30 or a person passes through, the screen 21 may not be sufficiently illuminated. In that respect, according to the above-described configuration in which the irradiation unit 30 is provided on the weight bar 26, the above-described effects can be obtained while avoiding such inconvenience.

  Since the irradiation unit 30 is installed on the weight bar 26, unlike the case where the irradiation unit 30 is installed on the winding pipe 22, the irradiation unit 30 does not rotate when the screen 21 is wound or pulled out. Therefore, even if the screen 21 is not lowered, the screen 21 can be illuminated because the direction of the light emitted from the irradiation unit 30 does not change.

  Since a plurality of the irradiation units 30 are installed along the longitudinal direction of the weight bar 26, the screen 21 can be illuminated without much as compared with the case where only one is installed. As a result, it is possible to avoid as much as possible the situation where the indoor side can be seen from the outdoor side through the dark part of the screen 21 where the light from the irradiation unit 30 does not reach.

  Since the irradiation unit 30 is provided for the weight bar 26 that is normally installed in the screen device 20, the irradiation unit 30 can be installed without preparing a dedicated member for installing the irradiation unit 30 separately.

  When the illuminance in the room 15 detected by the room illuminance sensor 37 is larger than the outdoor illuminance detected by the outdoor illuminance sensor 39, the irradiation unit 30 performs light irradiation. Therefore, when the room 15 is illuminated by the lighting fixture 16 at night and the inside of the room 15 becomes brighter than the outside, that is, when the room 15 can be seen from the outdoor side, the screen 21 is automatically displayed. Since it is illuminated, it is possible to improve convenience in blocking the line of sight from the outdoor side. In addition, when the room 15 is not illuminated by the lighting fixture 16 even at night, light irradiation by the irradiation unit 30 is not performed, so that unnecessary irradiation can be prevented.

  The amount of light emitted from the irradiation unit 30 is set so that the illuminance on the screen outdoor side of the living room 15 detected by the screen illuminance sensor 38 is larger than the illuminance on the indoor side of the screen of the living room 15 detected by the room illuminance sensor 37. It was decided to adjust. In this case, since the outdoor side of the screen 21 is illuminated brighter than the indoor side of the screen 21 in the living room 15, the effect of blocking the line of sight from the outdoor side can be further enhanced. Further, even when the amount of light from the lighting fixture 16 increases due to the dimming of the lighting fixture 16, the amount of light from the irradiation unit 30 is adjusted according to the increase in the amount of light, so that convenience is improved. be able to.

  When the presence of a person around the window 12 outdoors is detected by the human detection sensor 36, the light emitted from the irradiation unit 30 is blinked. In this case, since the screen 21 blinks, a suspicious person approaching the window portion 12 can be threatened. Specifically, when it is detected that a person is present around the window 12 for a predetermined time or longer, the irradiation unit 30 blinks, so that a resident who passes only around the window 12 is detected. Can be avoided.

  The present invention is not limited to the above embodiment, and may be implemented as follows, for example.

  (1) In the above embodiment, the irradiation process is performed when the illuminance of the living room 15 (specifically, the indoor side of the screen) is larger than the outdoor illuminance, but the illuminance between the illuminance of the living room 15 and the outdoor illuminance. The irradiation process may be executed when the difference becomes larger than a predetermined value. By doing so, for example, when the illuminance of the living room 15 is slightly larger than the outdoor illuminance, that is, when the line of sight from the outside can be blocked without performing the irradiation process, the irradiation process can be avoided. Useless irradiation can be prevented.

  Further, the irradiation process may be executed when the outdoor illuminance is smaller than a predetermined value. In this case, for example, if the predetermined value is set to the illuminance after sunset (for example, 30 lux), when the outdoors becomes dim in the evening, that is, when the inside of the living room 15 can be seen from the outdoor side. Since the screen 21 is automatically illuminated, it is possible to improve convenience in blocking the line of sight from the outdoor side.

  Further, an operation unit that is operated by a resident may be provided on the wall surface of the living room 15 and the light irradiation by the irradiation unit 30 may be executed based on the operation of the operation unit. If it does so, the line of sight from the outdoors can be interrupted according to a resident's need. Further, if the irradiation unit 30 performs light irradiation based on the operation of the operation unit while the living room 15 is not illuminated by the lighting device 16 at night, only the periphery of the screen 21 in the living room 15 can be illuminated brightly. it can. In this case, since the interior of the living room 15 can be indirectly illuminated by the reflected light from the screen 21, a feeling of relaxation can be produced in the living room 15.

  (2) When the human detection sensor 36 detects that there is a person around the window portion 12 outdoors, the irradiation unit 30 may perform light irradiation. In this case, since the screen 21 is illuminated when a suspicious person or the like approaches the window portion 12, the line of sight from the outdoor side can be blocked and the suspicious person approaching the window portion 12 can be threatened. In addition, if it is detected that there is a person around the window 12 for a predetermined period of time, if the light irradiation by the irradiation unit 30 is performed, a resident or the like passing only around the window 12 is detected. Can be avoided.

  (3) A human detection sensor that detects the presence of a person in the living room 15 may be provided, and light irradiation by the irradiation unit 30 may be performed when the human detection sensor detects the presence of a person. Thereby, when a resident etc. exists in the living room 15, since the screen 21 is brightly illuminated, it can prevent seeing the figure of a resident etc. from the outdoor side.

  (4) In the above embodiment, the irradiation unit 30 is installed on the weight bar 26 provided at the lower end of the screen 21. However, the irradiation unit 30 is not necessarily provided at the lower end of the screen 21. You may provide in the upper end part. For example, it is conceivable to install the irradiation unit 30 on the winding pipe 22 provided at the upper end of the screen 21. Specifically, the irradiation unit 30 is installed inside the winding pipe 22, and a light opening is provided below the irradiation unit 30 in the winding pipe 22. In this case, since light is irradiated to the screen 21 from the upper end of the screen 21 downward, the irradiated light is allowed to spread over the entire vertical direction of the screen 21 without being disturbed by the waviness of the sheet or the like. Can do. Therefore, also in this case, the screen 21 can be brightly illuminated, and the line of sight from the outdoor side can be blocked at night.

  Moreover, you may install the irradiation part 30 in both the upper end part of the screen 21, and a lower end part. For example, in addition to installing the irradiation unit 30 on the weight bar 26, it may be installed on the winding pipe 22. If it does so, since light is irradiated with respect to the screen 21 from the up-and-down both ends of the screen 21, the whole screen 21 can be illuminated by more uniform illumination intensity. Therefore, it is possible to prevent the outdoor side from being seen through the portion of the screen 21 where the illuminance is small (for example, the portion relatively distant from the irradiation unit 30).

  Note that it is not always necessary to install a plurality of irradiation units 30, and only one irradiation unit 30 may be installed. For example, when the irradiation unit 30 is constituted by a long fluorescent lamp or the like, if only one irradiation unit 30 is installed along the longitudinal direction of the weight bar 26, the entire area of the screen 21 is tried and illuminated uniformly. Can do.

  (5) The emission position of the light emitted from the irradiation unit 30 may be variable. For example, there is provided an opening switching means for selectively switching the opening position of the light opening communicating between the inside and outside of the weight bar between the indoor side and the outdoor side of the screen, and the light emission position is set to the indoor side of the screen by the opening switching means. Switching to the outdoor side can be considered. A specific example will be described below with reference to FIG. As shown in FIG. 6, light openings 45 and 46 are provided in the weight bar 41 and the cylindrical portion 42 a of the screen 42, respectively. The inside and outside of the weight bar 41 are communicated with each other by the light openings 45 and 46. The light openings 45 and 46 are provided on the indoor side and the outdoor side of the screen 42, respectively, and are provided near the boundary between the flat portion of the screen 21 and the cylindrical portion 42a. A plurality of indoor side light openings 45a, 46a and outdoor side light openings 45b, 46b are provided at predetermined intervals along the longitudinal direction of the weight bar 41 so that they face each other across the flat part of the screen 21. Is arranged. An opening switching member 43 extending along the longitudinal direction of the weight bar 41 is provided on the inner peripheral side of the weight bar 41. The opening switching member 43 is formed in a cylindrical shape and has an outer diameter that is substantially the same as the inner diameter of the weight bar 41. The opening switching member 43 is provided with a plurality of openings 43a along the longitudinal direction, and the openings 43a are provided at portions corresponding to the light openings 45 and 46, respectively. The opening switching member 43 is rotatable along the inner circumference of the weight bar 41, and the position of the opening 43a can be changed by rotating. Specifically, the opening switching member 43 includes an indoor position where the opening 43a is continuous with the indoor side light openings 45a and 46a (see FIG. 6A), and the opening 43a is the outdoor side light openings 45b and 46b. And a continuous outdoor position (see FIG. 6B). Therefore, when the opening switching member 43 is in the indoor position, the inside and outside of the weight bar 41 are communicated with each other through the indoor side light openings 45a and 46a (and the opening 43a), while the outdoor side light openings 45b and 46b The communication is blocked by the opening switching member 43. When the opening switching member 43 is in the outdoor position, the inside and outside of the weight bar 41 are communicated with each other through the outdoor side light openings 45b and 46b (and the opening 43a), while the indoor side light openings 45a and 46a are open. The communication is blocked by the switching member 43.

  An irradiation unit 30 is provided below each of the light openings 45 and 46. In this embodiment, the emission position of the light emitted from the irradiation unit 30 can be changed by switching the position of the opening switching member 43 between the indoor position and the outdoor position. Specifically, when the opening switching member 43 is set at the indoor position, the light emitted from the irradiation unit 30 is irradiated upward through the indoor side light openings 45a and 46a, and the indoor side surface of the screen 42 is illuminated. . On the other hand, when the opening switching member 43 is set to the outdoor position, the light emitted from the irradiation unit 30 is irradiated upward through the outdoor side light openings 45b and 46b, and the outdoor side surface of the screen 42 is illuminated. Therefore, in the above configuration, by switching the position of the opening switching member 43 between the indoor position and the outdoor position, the irradiation surface of the screen 42 irradiated with light by the irradiation unit 30 can be switched between the indoor side surface and the outdoor side surface. It is like that.

  Thus, when it is desired to indirectly illuminate the interior of the living room 15 with the light reflected on the screen 21, the light is applied to the indoor side surface of the screen 42, or the outdoor side of the screen 21 is illuminated from the outdoor side. When it is desired to block the line of sight, the outdoor side surface of the screen 42 can be irradiated with light. That is, in this case, the way of illuminating can be changed according to the needs of residents.

  (6) In the above embodiment, when the human detection sensor 36 detects that there is a person around the window 12 outdoors, the screen 21 is blinked by blinking the light emitted by the irradiation unit 30. However, by changing this, the amount of light irradiated by the irradiation unit 30 may be increased so that the screen 21 is illuminated more brightly. Also in this case, the suspicious person who approached the window part 12 etc. can be threatened like the said embodiment. Moreover, when the amount of light irradiated by the irradiation unit 30 is increased to illuminate the screen 21 more brightly, it is possible to enhance the effect of blocking the line of sight from the outdoor side.

  (7) Although the case where the present invention is applied to the screen device 20 has been described in the above embodiment, the present invention may be applied to other blind devices. For example, it is conceivable to apply the present invention to a vertical blind having a plurality of slats extending vertically. As shown in FIG. 7, the vertical blind 50 includes a head rail 51 that extends in the lateral direction and a plurality of slats 52 (corresponding to seat members) that are suspended and supported by the head rail 51. Are arranged so as to partially overlap in the lateral direction, so that the window portion 12 is closed. The slats 52 are made of cloth and are formed to extend in the vertical direction. A bag-like folded portion 53 is formed at the lower end of each slat 52, and a balance weight (corresponding to a weight member) is accommodated inside the folded portion 53. Therefore, each slat 52 is in a state where it hangs down due to its own weight of the balance weight, and therefore the slat surface is formed relatively flat along the vertical direction.

  An opening (not shown) that communicates the inside and outside of the folded portion 53 is provided at the upper end of the folded portion 53 of the slat 52. An irradiation unit 55 is provided inside the folded portion 53 at a position below the opening, and light emitted from the irradiation unit 55 is irradiated upward through the opening. In addition, the irradiation part 55 is provided in the inside of the folding | returning part 53, without interfering with a balance weight and the progress of light being prevented by the balance weight. In this case, since it is possible to avoid the progress of the light emitted from the irradiation unit 55 from being disturbed by the undulation generated in the slat 52, the light from the irradiation unit 55 can be spread over the entire vertical direction of the slat 52. it can. Thereby, since each slat 52 can be illuminated brightly, the line of sight from the outdoor side can be blocked even at night, and privacy can be protected.

  DESCRIPTION OF SYMBOLS 10 ... Building, 11 ... Outer wall part, 12 ... Window part as building opening part, 15 ... Living room, 20 ... Screen apparatus as blind apparatus, 21 ... Screen as sheet member and roll screen, 26 ... Weight as weight member Bar, 30 ... Irradiation unit as irradiation means, 35 ... Controller as control means and irradiation mode changing means, 36 ... Human detection sensor as person detection means, 37 ... Room illuminance sensor as indoor light detection means, 38 ... Screen Illuminance sensor, 39: Outdoor illuminance sensor as outdoor light detection means, 50: Vertical blind as a blind device.

Claims (8)

A blind device that includes a seat member that is suspended and arranged on the indoor side of the building opening in the building opening provided on the outer wall of the building, and that shields the building opening by the sheet member,
A blind device, wherein at least one of an upper end portion and a lower end portion of the sheet member is provided with irradiation means for irradiating the sheet member with light.   The blind device according to claim 1, wherein a weight member is provided at a lower end portion of the sheet member. The sheet member includes a roll screen,
A weight bar as the weight member is provided at the lower end of the roll screen,
The blind device according to claim 2, wherein the irradiation unit is provided on the weight bar.   4. The weight bar according to claim 3, wherein the weight bar has a cylindrical shape, and a light source as the irradiating means is provided on the inside of the weight bar, and a light emission position for emitting light from the light source is variable in the weight bar. The blind device described. Outdoor light detection means for detecting outdoor brightness;
Control means for controlling light irradiation by the irradiation means based on the outdoor brightness detected by the outdoor light detection means;
The blind device according to any one of claims 1 to 4, further comprising: An indoor light detection means for detecting the brightness of the living room provided with the sheet member;
The control means performs light irradiation by the irradiation means when the brightness of the living room detected by the indoor light detection means is larger than the outdoor brightness detected by the outdoor light detection means. The blind device according to claim 5. The indoor light detection means includes means for detecting the brightness on the indoor side of the sheet member, and means for detecting the brightness on the outdoor side of the sheet member,
The blind according to claim 6, wherein the amount of light irradiated from the irradiation unit is adjusted so that the brightness on the outdoor side of the sheet member exceeds the brightness on the indoor side of the sheet member. apparatus. A person detecting means for detecting the presence of a person around the opening of the building outdoors;
When the presence of a person is detected around the building opening by the human detection means, an irradiation mode changing means for changing the irradiation mode by the irradiation means,
The blind device according to any one of claims 1 to 7, further comprising:

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