JP2008223347A - False window - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a false window which further brings about improved liberal feeling of a room while reducing costs. <P>SOLUTION: The false window 1 is set up by arranging a video display unit 4 for displaying a landscape video, in a wall portion in a room space, and provides an image of a window. The false window is formed of: light window-type illumination devices 6, 6 which are set adjacently to the video display unit 4, and performs surface emission toward the room space; a luminance detecting means 7 for detecting the luminance of the landscape video of the video display unit 4; and a luminance adjusting means 8 for controlling the light window-type illumination devices 6, 6 according to a luminance value detected by the luminance detecting means 7, and adjusting the luminance of light emitting surfaces 6a, 6a of the respective light window-type illumination devices 6, 6 so as to be in harmony with the landscape video. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a pseudo window that can appear as if a window is present.

Windows cannot be installed in offices in underground spaces or in control rooms of nuclear power plants. Therefore, conventionally, a technique for providing a pseudo window on the wall surface of the windowless space as described above has been proposed. The pseudo window is a simulation of a window, and has a structure in which a large display (image display device) for projecting a landscape image and a landscape photograph are fitted in a frame of a window frame attached to a wall surface. According to this simulated window, the scenery projected on a large display or the like looks like a scenery viewed from a window, so that it is possible to eliminate the feeling of blockage and pressure in a windowless space (see, for example, Patent Document 1). ).
JP-A-9-205602

  However, in the above-described conventional pseudo window, even if a large display is used, there is a case where the window is small and the occlusion feeling in the windowless space cannot be sufficiently eliminated. Therefore, in order to obtain a more open feeling, by using an oversized display or installing a plurality of displays side by side, it is possible to form a large area pseudo window, but the cost of the display increases, There is a problem that it is difficult to realize.

  The present invention has been made in consideration of the above-described conventional problems, and an object of the present invention is to provide a pseudo window that can further improve the feeling of opening while suppressing cost.

  The simulated window according to the present invention is a simulated window that displays a landscape image on a wall of an indoor space so that it looks like a window, and is arranged side by side on the image display device and faces toward the indoor space. A light window illumination device that emits light, a luminance detection means for detecting the luminance of a landscape image of the video display device, and controls the light window illumination device according to the luminance value detected by the luminance detection device, And a brightness adjusting means for adjusting the brightness of the light emitting surface of the light window type lighting device so as to harmonize with a landscape image.

  Due to such a feature, it is possible to obtain a feeling that a large-area window such as a continuous window exists by the video display device and the light window illumination device installed side by side. In addition, the brightness of the landscape video on the video display device is detected by the brightness detection means. When a bright image such as a sunny daytime landscape is displayed, the detected luminance value is high. On the other hand, when a dark image such as a night view is displayed, the detected luminance value is low. Then, the light window type illumination device is controlled by the brightness adjusting means according to the brightness value, and the brightness of the light emitting surface is adjusted. When a bright image is displayed and the luminance value is high, the illumination is increased so that the luminance of the light emitting surface is increased. Conversely, when a dark image is displayed and the luminance value is low, the illumination is turned off so that the luminance of the light emitting surface is lowered.

  Further, in the simulated window according to the present invention, the light emitting surface of the light window type lighting device has an upper dark region that makes a shadow of a ridge on the window imagine, and a lower sunlight that makes a direct sunlight irradiate the window surface. The light window type lighting device is controlled according to the time, and the dark region and the light region are adjusted in accordance with the ratio of the shadow portion of the window surface and the direct solar radiation portion at the time. It is preferable that a light / dark ratio adjusting means for adjusting the ratio is provided.

  Thereby, the ratio between the dark area and the bright area of the light emitting surface is adjusted according to the time. In the morning and evening when the solar altitude is low, the shadow of the haze is projected only near the top edge of the window surface, and direct solar radiation is irradiated to the majority of the window surface. In the low time zone, the ratio of the dark area to the bright area is adjusted so that the ratio of the dark area is reduced and the majority is the bright area. On the other hand, at noon when the solar altitude is high, the shadow of the haze projected on the window surface extends toward the lower part of the window surface, and direct solar radiation is irradiated only on the lower end portion of the window surface. As for the surface, the ratio between the dark area and the bright area is adjusted so that the ratio of the bright area is reduced and most of the area becomes the dark area in the time zone when the solar altitude is high.

  The pseudo window according to the present invention controls the light window type lighting device according to time and adjusts the color temperature of the light source of the light window type lighting device according to the color temperature of sunlight at the time. It is preferable that an adjusting means is provided.

  Thereby, the color temperature of the light source of a light window type illuminating device is adjusted according to time. In the morning and evening when the solar altitude is low, since the color temperature of sunlight is low, the color temperature of the light source of the light window illumination device is adjusted to be low, and yellow-red light is emitted from the light emitting surface. On the other hand, at noon when the solar altitude is high, since the color temperature of sunlight is high, the color temperature of the light source of the light window illumination device is adjusted to be high, and blue-white light is emitted from the light emitting surface.

  In the pseudo window according to the present invention, it is preferable that the luminance detecting unit is a unit that detects the luminance of a landscape video from luminance information included in a video signal transmitted to the video display device.

  Thus, the luminance of the landscape video is detected simply by reading the luminance information included in the video signal and performing a predetermined calculation process.

  In the pseudo window according to the present invention, the luminance detection means is provided in at least one of the display unit of the video display device or the display unit of the luminance detection display device that displays the same landscape video as the video display device. The brightness sensor may be used to detect the brightness of the landscape image.

  Thereby, the brightness of the landscape image is detected only by measuring the brightness with the brightness sensor.

  The pseudo window according to the present invention has a configuration in which the video display device and the light window type lighting device are installed side by side, so it is compared with a case where a plurality of video display devices are installed or an oversized video display device is installed. And cost can be reduced. In addition, since the image display device and the light window type lighting device arranged side by side provide a feeling that there is a large-area opening like a continuous window, the feeling of opening can be further improved. The comfort of the indoor space can be further improved. Further, since the luminance of the light emitting surface of the light window type lighting device is adjusted according to the brightness of the landscape video displayed on the video display device, the naturalness as a continuous window is produced and the uncomfortable feeling is eliminated. In this way, by using a realistic pseudo-window, the effect of the pseudo-window, that is, the effect of eliminating the feeling of occlusion and pressure can be increased, and the comfort of the indoor space can be further improved.

  Hereinafter, first, second, third, and fourth embodiments of a pseudo window according to the present invention will be described with reference to the drawings.

[First Embodiment]
First, the pseudo window 1 in the first embodiment will be described. FIG. 1 is a perspective view showing the pseudo window 1, and FIG. 2 is a schematic view showing the pseudo window 1.

  As shown in FIGS. 1 and 2, the simulated window 1 simulates a window from which an outside landscape can be seen, and the schematic configuration thereof is installed in a state of being fitted in the opening 3 of the wall 2. A large-sized display 4, light window illumination devices 6, 6 installed side by side with the display 4 in the state of being fitted in the opening 3, and a luminance detection device that detects the luminance of a landscape image projected on the display 4 7 and a light window illumination control device 8 for controlling the light window illumination devices 6 and 6.

  The display 4 is a known video display device such as a plasma display or a liquid crystal display, and displays a landscape video by receiving a video signal such as a real-time video or a recorded video shot by a camera (not shown). The display 4 is disposed deeper than the wall surface on the indoor side of the wall portion 2, and the display surface of the display 4 (surface on the indoor side) is surrounded by the inner peripheral surface of the opening 3. Yes. In addition, a window frame 9 is attached to the outer edge of the display 4 to make the display 4 look like a window, and the screen 4 a (display unit) of the display 4 is fitted in the window frame 9. It has become.

  The luminance detection device 7 is a device that detects the luminance of a landscape video displayed on the display 4 from luminance information included in a video signal sent to the display 4. The luminance detection device 7 receives a video signal from a video source 10 that sends the video signal to the display 4. The luminance detection device 7 calculates the average luminance value of the entire screen at that time based on the luminance information in the video signal sent from the video source 10. The calculated average luminance value is output from the luminance detection device 7 and input to the illumination control device 8. The above average luminance value is high when a bright image such as a sunny daytime scene is displayed on the display 4. On the other hand, when a dark image such as a night view is displayed on the display 4, the image becomes lower.

The method for obtaining the above average luminance value will be specifically described.
FIG. 3 is a graph showing a change in the luminance I of the landscape video with respect to time x. F (x) shown in FIG. 3 is a luminance signal at time x. As shown in FIG. 3, since the luminance information in the video signal has the information of the scanning line segments in time series, it is averaged over a time (b−a) that is equal to or longer than the time of scanning the screen 4a of the display 4 once. The average luminance value of the entire screen 4a is obtained. For example, assuming that the average luminance value at time b displayed on the display 4 is I (b), the average luminance value I (b) is expressed by the following equation.

  The light window illumination control device 8 is a device that calculates and outputs an output value for luminance adjustment based on the average luminance value sent from the luminance detection device 7. The output value calculated by the illumination control device 8 is basically higher as the average luminance value is higher and lower as the average luminance value is lower. The output value output from the illumination control device 8 is input to the light window illumination devices 6 and 6.

  FIG. 4 is a cross-sectional view illustrating a schematic configuration of the light window illumination device 6. As shown in FIGS. 1, 2, and 4, the light window illuminating device 6 is an illuminating device that emits light toward the indoor space side, and its schematic configuration is arranged with the surface facing the indoor space side. The semi-transparent plate 60 and the backlight 61 that shines light on the back surface of the semi-transparent plate 60. As the translucent plate 60, for example, a milky white plate can be used. Moreover, as the backlight 61 arrange | positioned on the back side of the translucent board 60, it consists of what consists of the structure which arrange | positioned the several incandescent lamps in the matrix form, for example, and the structure which arranged the some fluorescent lamp In addition, a direct-type backlight with a cold cathode tube placed behind the diffuser plate that spreads light, a reflector on the back of the light guide plate made of acrylic, etc. and a diffuser plate on the front of the light guide plate There is a side-edge type backlight having a structure in which a cold cathode tube is disposed at the end of the light guide plate.

  The light window illumination devices 6 and 6 are respectively disposed on both sides of the display 4. The light window illumination devices 6 and 6 and the display 4 are arranged in series, and the light emitting surfaces 6a and 6a (half The surface of the transparent plate 60) is provided substantially flush with the screen 4a of the display 4. Further, the vertical dimension H2 of the light emitting surfaces 6a and 6a of the light window illumination devices 6 and 6 is substantially equal to the vertical dimension H1 of the screen 4a of the display 4, and the light window illumination devices 6 and 6 and the display 4 Are combined together to look like a continuous window.

  The light window illumination device 6 is a dimming illumination device capable of adjusting the brightness of a light source (incandescent lamp, fluorescent lamp, cold cathode tube, etc.), and is sent from the light window illumination control device 8. The brightness of the light source is adjusted in response to the output value for brightness adjustment. If the light source is an incandescent lamp, the brightness of the light source is adjusted by changing the current passed through the filament of the light source based on the output value. When the light source is a fluorescent lamp, the brightness of the light source is adjusted by changing the voltage based on the output value. The light window type lighting device 6 may be a stepped dimming type lighting device that is dimmed in a plurality of steps, or may be a continuously dimming type lighting device that is continuously dimmed. May be.

  By adjusting the brightness of the light source as described above, the brightness of the light emitting surfaces 6a and 6a of the light window illumination devices 6 and 6 is adjusted so as to be in harmony with the landscape image projected on the display 4. For example, when a bright image is displayed on the display 4, the average luminance value is high, the output value for adjusting the luminance is also high, and the brightness of the light sources of the light window illumination devices 6 and 6 is increased. Thereby, the brightness | luminance of the light emission surfaces 6a and 6a of the light window type illuminating devices 6 and 6 becomes high. On the other hand, when a dark image is displayed on the display 4, the average luminance value is low, the output value for adjusting the luminance is also low, and the brightness of the light sources of the light window illumination devices 6 and 6 is lowered. Thereby, the brightness | luminance of the light emission surfaces 6a and 6a of the light window type illuminating devices 6 and 6 becomes low.

  According to the pseudo window 1 having the above-described configuration, since the light window type illumination devices 6 and 6 are respectively installed on both sides of the display 4, when installing a plurality of displays or when installing an oversized display Compared with the cost can be reduced. Further, since the display 4 and the light window type lighting devices 6 and 6 arranged side by side provide a feeling that a large area opening such as a horizontal window exists, the feeling of opening is further improved. It is possible to further improve the comfort of the indoor space. That is, according to the pseudo window 1 having the above-described configuration, it is possible to improve the feeling of opening while suppressing the cost.

  In addition, since the brightness of the light emitting surfaces 6a and 6a of the light window illumination devices 6 and 6 is adjusted according to the brightness of the landscape image displayed on the display 4, the naturalness of the window is produced and the sense of discomfort is eliminated. can do. Thus, by using the realistic pseudo window 1, the effect of eliminating the feeling of blockage and pressure is great, and the comfort of the indoor space in which the pseudo window 1 is installed can be further improved.

  Further, according to the pseudo window 1 having the above-described configuration, since the luminance detection device 7 that detects the luminance of the landscape video from the luminance information included in the video signal transmitted to the display 4 is provided, the pseudo window 1 is displayed on the display 4. The brightness of a landscape image can be easily detected.

[Second Embodiment]
Next, the pseudo window 101 according to the second embodiment will be described. FIG. 5 is a schematic diagram showing the pseudo window 101. In addition, about the structure similar to 1st Embodiment mentioned above, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 5, the light window illumination control device 108 provided in the pseudo window 101 calculates and outputs an output value for brightness adjustment based on the average brightness value sent from the brightness detection device 7, and This is an apparatus that outputs an output value for adjusting the light / dark ratio according to the time. The output value for adjusting the light / dark ratio is an output value for adjusting the ratio between the dark area A and the bright area B of the light emitting surface 106a, which will be described later, and is varied according to the time. It is adjusted according to the ratio of solar radiation.

  The light window illumination device 106 is a dimming illumination device capable of adjusting the brightness of the light source. The brightness of the light source of the light window illumination device 106 is adjusted in response to the output value for brightness adjustment sent from the illumination light control device 108, as in the light window illumination device 6 of the first embodiment. The

  Further, the light window type lighting device 106 has a light emitting surface 106a divided into a dark region A in which a shadow of a ridge on the window is imagined and a bright region B in which direct sunlight is irradiated on the window surface. It is a lighting device. The dark area A is an area that occupies the upper part of the light emitting surface 106a. The dark area A is a dark area as compared with the bright area B, and does not receive light from the backlight 161 illustrated in FIG. 6 and does not emit light toward the indoor space side. On the other hand, the bright region B is a region that occupies the lower portion of the light surface 106a and is formed below the dark region A. The bright region B is irradiated with light from the backlight 161 shown in FIG. 6 and emits light toward the indoor space.

  The light window illumination device 106 is an illumination device capable of adjusting the ratio of the dark area A and the bright area B described above. The vertical dimension H3 of the dark area A and the vertical dimension H4 of the bright area B are as follows. It can be changed appropriately.

  FIG. 6A is a cross-sectional view illustrating a schematic configuration of the light window illumination device 106 in which the ratio of the dark area A to the bright area B can be adjusted. As shown in FIG. 6 (a), the backlight 161 of the light window type illumination device 106 has a plurality of light sources 161a extending in the horizontal direction arranged in parallel in the vertical direction, and between the adjacent light sources 161a and 161a. Further, the light shielding plate 161b is provided. According to the light window illumination device 106 provided with the backlight 161, by turning off the light sources 161a on the upper side and turning off the light, the upper part of the light emitting surface 106a facing the light sources 161a does not emit light and darkens. The area A is formed, and the lower light sources 161a are turned on to emit light, so that the lower part of the light emitting surface 106a facing the light sources 161a emits light and the bright area B is formed. The plurality of light sources 161a can be switched on and off separately, and the ratio of the dark area A and the bright area B is adjusted by appropriately switching the plurality of light sources 161a on and off. . That is, the dark area A can be increased by increasing the number of light sources 161a to be turned off, and conversely, the bright area B can be increased by reducing the number of light sources 161a to be turned off.

  Note that the backlight 161 illustrated in FIG. 6A is not limited to the above-described backlight 161, and for example, the backlight 161 'illustrated in FIG. 6B may be used. That is, in the backlight 161 ′ provided in the light window illumination device 106, a light source 161a ′ extending in the horizontal direction is provided below the light window illumination device 106, and a light shielding plate 161b ′ is disposed above the light source 161a ′. May be configured to be rotatable around a horizontal axis. According to the light window illumination device 106 provided with the backlight 161 ′, the light from the light source 161a ′ strikes the lower part of the translucent plate 60, thereby forming the bright region B below the light emitting surface 106a and the light shielding plate 161b. The dark region A is formed in the upper part of the light emitting surface 106a by blocking the light of the light source 161a 'that hits the upper part of the translucent plate 60 by'. Then, the ratio between the dark area A and the bright area B is adjusted by rotating the light shielding plate 161b '. That is, the dark area A can be enlarged and the bright area B can be reduced by tilting the light shielding plate 161b ′, and conversely, the dark area A can be reduced by raising the light shielding plate 161b ′. The bright area B can be enlarged.

  Further, the ratio adjustment between the dark area A and the bright area B described above will be specifically described. First, the solar altitude is calculated from the time. Next, based on the calculated solar altitude, the length and mounting height of the virtual cocoon, and the orientation of the simulated window 101, it is calculated to which part of the window surface the shadow of the cocoon is projected and which part is exposed to direct solar radiation. To do. Based on the calculated result, the vertical dimension H3 of the dark area A and the vertical dimension H4 of the bright area B are determined, and the ratio between the dark area A and the bright area B is adjusted.

  FIG. 7 is a graph showing a time-series change of the portion of the window surface that is exposed to direct solar radiation, and shows the height of the portion of the window surface that receives direct solar radiation. As shown in FIG. 7, the height of the portion of the window that is exposed to direct solar radiation is high in the morning (sunrise) and evening (sunset) times when the solar altitude is low, and is low during the daytime when the solar altitude is high. Become. Accordingly, in the morning and evening time zones when the solar altitude is low, the vertical dimension H3 of the dark area A is reduced and the vertical dimension H4 of the bright area B is increased as shown in FIG. In the daytime period when the solar altitude is high, the vertical dimension H3 ′ of the dark area A is increased and the vertical dimension H4 ′ of the bright area B is decreased as shown in FIG.

  According to the pseudo window 101 having the above-described configuration, a dark region A that makes the shadow of the cocoon on the window imagine the light emitting surface 106a of the light window type illumination device 106 is formed. Since it extends or shrinks according to the time like a shadow, the naturalness of the window can be produced and the realistic pseudo-window 101 can be obtained. As a result, the effect as the pseudo-window 101 is enhanced, and the indoor space is increased. The comfort of further increases.

  In the second embodiment described above, the dark region A is formed by preventing light from the light source 161a from being applied to the upper part of the light emitting surface 106a. However, in the present invention, the upper part of the light emitting surface 106a is formed. It is also possible to form the dark region A by irradiating with light darker than other portions. That is, the configuration may be such that the dark area A emits light with a lower luminance than the bright area B.

  In addition, since the solar altitude fluctuates every year, the solar altitude may vary depending on the date even at the same time. Further, since the solar altitude varies depending on the location of the target location, the solar altitude may vary depending on the latitude and longitude of the target location even at the same time. Therefore, the light window type lighting device 106 is controlled according to not only the time but also the latitude / longitude and / or date of the target location, and the shadow portion and the direct solar radiation portion in the latitude / longitude, date and time of the target location. The ratio between the dark area A and the bright area B may be adjusted in accordance with the ratio. For example, the solar altitude may be calculated from the latitude / longitude, date and time of the target location. Thereby, the ratio of the dark area A and the bright area B can be further approximated to the ratio of the actual shadow part and the direct solar radiation part, and the pseudo-window 101 with more reality can be realized.

[Third Embodiment]
Next, the pseudo window 201 according to the third embodiment will be described. FIG. 9 is a schematic diagram showing the pseudo window 201. In addition, about the structure similar to 1st Embodiment mentioned above, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  As illustrated in FIG. 9, the luminance detection device 207 provided in the pseudo window 201 uses the luminance sensor 217 provided on the screen 4 a (display unit) of the display 4 to display the luminance of the landscape image displayed on the display 4. Is a device for detecting As the brightness sensor 217, a known brightness sensor can be used. The luminance at the installation position of the luminance sensor 217 is measured by the luminance sensor 217, and a representative luminance value on the screen 4a of the display 4 is obtained. The luminance value obtained by the luminance sensor 217 is input to the illumination control device 8.

The luminance sensor 217 described above can be installed at an arbitrary position on the screen 4a of the display 4, but is preferably arranged at the end of the screen 4a so as not to stand out.
Moreover, it is preferable to arrange | position the luminance sensor 217 in the position showing the brightness of a landscape within the range of the screen 4a. The position representing the brightness of the landscape is a position where, for example, the sky is displayed.
In the case of a landscape video, the upper range of the screen 4a is often a portion representing the brightness of the landscape. Therefore, the luminance sensor 217 is preferably arranged in the upper range of the screen 4a. On the contrary, in the lower part of the screen 4a, the ground, vegetation, and the like are displayed and often darker than the brightness of the landscape. For this reason, if the luminance sensor 217 is disposed in the lower range of the screen 4a, the luminance value detected by the luminance sensor 217 may be low even if the image actually displayed is a clear landscape. In this case, the luminance of the light emitting surface 6a of the light window type lighting device 6 becomes dark, and the brightness of the landscape image is uncomfortable.

  According to the pseudo window 201 having the above-described configuration, the luminance detection device 207 that detects the luminance of the landscape image displayed on the screen 4a of the display 4 using the luminance sensor 217 provided on the screen 4a of the display 4 is provided. Therefore, it is possible to easily detect the luminance of the landscape image only by measuring with the luminance sensor 217. Further, since the luminance sensor 217 can be installed at an arbitrary position, the luminance can be detected at a position optimal for measurement, and the brightness of the landscape can be detected accurately.

  In the third embodiment described above, only one luminance sensor 217 is installed on the screen 4a of the display 4. However, in the present invention, a plurality of luminance sensors 217 are installed on the screen 4a of the display 4. May be. When a plurality of luminance sensors 217 are installed, an average value of a plurality of luminance values respectively measured by the plurality of luminance sensors 217 may be calculated and output, or a plurality of values measured by the plurality of luminance sensors 217 may be calculated. One of the brightness values may be output, or the brightness value may be output by performing other calculations.

  In the third embodiment described above, the luminance sensor 217 is provided on the screen 4a of the display 4. However, the present invention has a luminance different from that of the pseudo display 4 as shown in FIG. A detection display 204 may be provided, and a luminance sensor 217 may be provided on the screen 204 a of the luminance detection display 204. More specifically, a video source 10 that sends a video signal to the pseudo display 4 and a luminance detection display 204 are connected to the luminance detection display 204 from the video source 10 in the same manner as the pseudo display 4. Send video signal. As a result, the same landscape image as the pseudo display 4 is displayed on the screen 204a of the luminance detection display 204. Then, the luminance is measured at an arbitrary position by the luminance sensor 217 provided on the screen 204 a of the luminance detection display 204, and the measured luminance value is sent to the illumination control device 8. Thus, by providing the brightness sensor 217 on the screen 204a of the brightness detection display 204, the brightness sensor 217 need not be installed on the screen 4a of the pseudo display 4. Further, in the case of the display 204 for detecting the luminance, there is no problem even if the luminance sensor 217 is arranged at the middle position of the screen 204a, so that the selection range of the installation position of the luminance sensor 217 can be widened. The luminance sensor 217 may be provided on the screen 4a of the pseudo display 4 and on the screen 204a of the luminance detection display 204, respectively.

  Further, the present invention replaces the light window illumination device 6 and the light window illumination control device 8 in the third embodiment described above with the light window illumination device 106 and the light window illumination control according to the second embodiment. Device 108 may be used. That is, in the configuration of the above-described third embodiment provided with the luminance sensor 217, similarly to the second embodiment, the light window illumination device 106 is controlled according to the time, and the window surface at those times is controlled. It is also possible to adopt a configuration in which the ratio of the dark area A and the bright area B is adjusted in accordance with the ratio of the shadow portion and the direct solar radiation portion.

[Fourth Embodiment]
Next, a pseudo window 301 according to the fourth embodiment will be described. FIG. 11 is a schematic diagram showing the pseudo window 301. In addition, about the structure similar to 1st Embodiment mentioned above, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 11, the light window illumination control device 308 provided in the pseudo window 301 calculates and outputs a brightness adjustment output value based on the average brightness value sent from the brightness detection device 7, and , An apparatus for outputting an output value for adjusting color temperature according to time. The output value for color temperature adjustment output from the light window illumination control device 308 is basically low in the morning (sunrise) and evening (sunset) times when the solar altitude is low, and the daytime when the solar altitude is high. The belt becomes higher. The luminance adjustment output value and the color temperature adjustment output value output from the light window illumination control device 308 are input to the light window illumination device 306, respectively.

  The light window type illumination device 306 is a dimming-color temperature variable type illumination device capable of adjusting the brightness and color temperature of the light source. The brightness of the light source of the light window illumination device 306 is adjusted by receiving the brightness adjustment output value sent from the light window illumination control device 308, as in the light window illumination device 6 of the first embodiment. Is done. Further, the color temperature of the light source of the light window illumination device 306 is adjusted according to time. The color temperature adjustment of the light source can be performed using, for example, a color temperature conversion filter, and may be a step-type color temperature adjustment that is variable in a plurality of steps, or may be a continuously variable color temperature adjustment. A stepwise color temperature adjustment may be used.

Here, the adjustment of the color temperature of the light source of the light window illumination device 306 will be described in detail.
FIG. 12 is a time-series color temperature control schematic diagram, and is a graph showing the color temperature of the light source with respect to time.
As shown in FIG. 12, the color temperature of the light source of the light window illumination device 306 is varied according to the time and adjusted according to the color temperature of the sunlight at the time. Specifically, at the sunrise time (Tr), the color temperature of the light source is assumed to be the solar radiation color temperature (K ₁ ) at the time of sunrise. If the time from the sunrise time (Tr) until the solar altitude reaches a certain point is defined as the change time (c), the color of the light source from the sunrise (Tr) to the time when the solar altitude reaches a certain point (Tr + c). The temperature is gradually increased, and the color temperature of the light source is set to the daytime maximum color temperature (K ₂ ) at the time when the solar altitude reaches a certain point (Tr + c). Thereafter, the color temperature of the light source is made constant at the maximum color temperature (K ₂ ) in a time zone where the solar altitude exceeds a certain level. The maximum color temperature (K ₂ ) is, for example, about 6000K. The color temperature (K) is gradually decreased from the time when the solar altitude starts to fall below a certain level (Ts-c) to the sunset time (Ts), and the color temperature of the light source is increased at sunrise time (Ts). Let it be the solar radiation temperature (K ₁ ) at sunset.

  The color temperature Y of the light source from the sunrise time (Tr) to the time when the solar altitude reaches a certain point (Tr + c) is expressed by the following equation.

  The color temperature Y of the light source from the time when the solar altitude reaches a certain point (Tr + c) to the time when the solar altitude starts to fall below a certain level (Ts−c) is expressed by the following equation.

  The color temperature Y of the light source from the time when the solar altitude starts to fall below a certain level (Ts-c) to the sunset time (Ts) is expressed by the following equation.

In the example of the color temperature control shown in FIG. 12, the time from the time when the solar altitude starts to fall below a certain level to the sunset time (Ts) (hereinafter referred to as change time) is the sunrise time (Tr The change time (c) is the same as the time until the solar altitude reaches a certain point, but the change times may be different.
In the example of the color temperature control shown in FIG. 12 described above, the solar color temperature (K ₁ ) at the sunrise sunset is the same color temperature, but the solar color temperature at sunrise and the solar color temperature at sunset are different. May be different.

The color temperature control of the light source shown in FIG. 12 is an example, and other color temperature control may be used.
For example, as shown in FIG. 13, there may be no time zone in which the color temperature of the light source is constant.
In the color temperature control shown in FIG. 13, the color temperature Y of the light source from the sunrise time (Tr) to the time when the solar altitude is highest ((Tr + Ts) / 2) is expressed by the following equation.

  The color temperature Y of the light source from the time when the solar altitude is highest ((Tr + Ts) / 2) to the sunset time (Ts) is expressed by the following equation.

Further, the color temperature control of the light source may be changed in a curved manner as shown in FIG. 14 instead of changing linearly.
In the color temperature control shown in FIG. 14, the color temperature Y of the light source is expressed by the following equation.

  However, d, e, and f in the above formula are derived from the following matrix.

  According to the pseudo window 301 having the above-described configuration, the light window illumination device 306 is controlled according to the time, and the color temperature of the light source of the light window illumination device 306 is adjusted according to the color temperature of sunlight at the time. Therefore, the color temperature of the sunshine that fluctuates in the daily cycle is expressed, and the pseudo window 301 can be made more realistic. Thereby, the effect as the pseudo window 301 is great, and the comfort of the indoor space in which the pseudo window 301 is installed can be further improved.

  In the fourth embodiment described above, as in the first embodiment, a luminance detection device that detects the luminance of a landscape video displayed on the display 4 from luminance information included in a video signal sent to the display 4. However, in the present invention, the luminance detection device 207 described in the third embodiment may be used instead of the luminance detection device 7 in the fourth embodiment. That is, in the configuration of the fourth embodiment described above, it is also possible to detect the luminance of the landscape image displayed on the display 4 using the luminance sensor 217, as in the third embodiment.

  In the present invention, the configuration described in the second embodiment may be added to the configuration described in the fourth embodiment. That is, the color temperature of the light source of the light window illumination device 306 is adjusted according to the time, and the ratio of the dark region A to the light region B on the light emitting surface 306a of the light window illumination device 306 is adjusted according to the time. A configuration is also possible.

  In the fourth embodiment described above, the light window illumination device 306 is controlled according to the time, and the color temperature of the light source of the light window illumination device 306 is adjusted according to the color temperature of sunlight at the time. Although the light window type lighting device 306 is controlled not only according to the time but also according to the latitude / longitude and / or date of the target area, it is adjusted to the color temperature of the sunlight at the latitude / longitude, date and time of the target area. The color temperature of the light source of the light window illumination device 306 may be adjusted. For example, since the sunrise time (Tr) and the sunset time (Ts) fluctuate in a yearly cycle, they may be set by calling them from date information. Further, since the sunrise time (Tr) and the sunset time (Ts) vary depending on the location of the target location, they may be corrected by the latitude and longitude of the target location. Thereby, the color temperature of the light source of the light window type illumination device 306 can be further approximated to the color temperature of actual sunlight, and a more realistic pseudo window 301 can be realized.

Although the embodiment of the pseudo window according to the present invention has been described above, the present invention is not limited to the above-described embodiment, and can be appropriately changed without departing from the scope of the present invention.
For example, in the first to fourth embodiments described above, the light window illumination devices 6, 106, and 306 are disposed on the sides of the display 4, and the display 4 and the light window illumination devices 6, 106, 306, However, according to the present invention, the light window type lighting devices 6, 106, and 306 may be provided on both or above or below the display 4. Thus, the light window type illumination devices 6, 106, 306 and the display 4 give the appearance of a vertical continuous window. In addition, the window illumination devices 6, 106, and 306 are disposed on the side of the display 4, and the light window illumination devices 6, 106, and 306 are disposed on both or above or below the display 4. May be.

  In the first to fourth embodiments described above, the light window illumination devices 6, 106, and 306 are disposed on both sides of the display 4, respectively, but the display 4 and the light window illumination devices 6, 106 are provided. , 306 can be appropriately changed. For example, the light window illumination devices 6, 106, and 306 may be disposed only on one side of the display 4, or the display 4 and the light window illumination devices 6, 106, and 306 are alternately arranged. The configuration may be provided.

In the present invention, a curtain or a blind can be installed on the indoor side of the light window illumination devices 6, 106, and 306. As a result, the pseudo windows 1, 101, 201, 301 look more like windows, and the effect as the pseudo windows 1, 101, 201, 301 can be further improved.
In the present invention, a transparent or translucent glass plate can be fitted into the window frame 9, and the glass plate can be arranged oppositely in front of the display 4 (inside the room). As a result, the pseudo windows 1, 101, 201, 301 look more like windows, and the effect as the pseudo windows 1, 101, 201, 301 can be further improved.
Moreover, it is also possible to install a window frame in the same manner as the window frame 9 of the display 4 along the outer peripheral edge of the light emitting surfaces 6a, 106a, 306a of the light window illumination devices 6, 106, 306. Thereby, the light window type illuminating devices 6, 106, and 306 look more like windows, and the effect as the pseudo windows 1, 101, 201, and 301 can be further improved.

  In addition, in the range which does not deviate from the main point of this invention, it is possible to replace suitably the component in above-mentioned embodiment with a well-known component, and you may combine the above-mentioned modification suitably.

It is a perspective view showing a pseudo window for explaining a 1st embodiment concerning the present invention. It is a mimetic diagram showing composition of a pseudo window for explaining a 1st embodiment concerning the present invention. It is a graph showing the change of the brightness | luminance of the landscape image with respect to the time for demonstrating 1st Embodiment based on this invention. It is sectional drawing showing the structure of the optical window type illuminating device for demonstrating 1st Embodiment based on this invention. It is a schematic diagram showing the structure of the pseudo | simulation window for demonstrating 2nd Embodiment based on this invention. It is sectional drawing showing the structure of the optical window type illuminating device for describing 2nd Embodiment based on this invention. It is a graph showing the height of the part which the direct solar radiation hits with respect to the time for demonstrating 2nd Embodiment which concerns on this invention. It is a schematic diagram showing the structure of the pseudo | simulation window for demonstrating 2nd Embodiment based on this invention. It is a mimetic diagram showing composition of a pseudo window for explaining a 3rd embodiment concerning the present invention. It is a schematic diagram showing the structure of the pseudo window for demonstrating other embodiment which concerns on this invention. It is a schematic diagram showing the structure of the pseudo window for describing 4th Embodiment based on this invention. It is a graph showing an example of the color temperature control of the light source with respect to the time for demonstrating 4th Embodiment which concerns on this invention. It is a graph showing the other example of color temperature control of the light source with respect to time for describing 4th Embodiment which concerns on this invention. It is a graph showing the other example of the color temperature control of the light source with respect to the time for demonstrating the 4th Embodiment which concerns on this invention.

Explanation of symbols

1, 101, 201, 301 Pseudo window 2 Wall 4 Display (Video display device)
4a screen (display section)
6, 106, 306 Light window illumination devices 6a, 106a, 306a Light emitting surface 7, 207 Luminance detection device (luminance detection means)
8 Light window illumination control device (luminance adjustment means)
108 Light window illumination control device (luminance adjustment means, light / dark ratio adjustment means)
204 Luminance detection display (luminance detection display device)
204a screen (display unit)
217 Luminance sensor 308 Illumination control device (luminance adjustment means, color temperature adjustment means)

Claims (5)

In a pseudo-window that displays a video display device that displays a landscape video on the wall of an indoor space and looks like a window,
A light window illumination device that is installed side by side on the video display device and emits light toward the indoor space side;
Luminance detection means for detecting the luminance of the landscape video of the video display device;
Brightness adjusting means for controlling the light window illuminating device according to the brightness value detected by the brightness detecting means, and adjusting the brightness of the light emitting surface of the light window illuminating device so as to harmonize with the landscape image;
A pseudo-window characterized by being provided with. The pseudo-window according to claim 1,
The light emitting surface of the light window type lighting device is divided into an upper dark region that makes a shadow of a fence on a window imagine and a lower bright region that makes a direct sunlight irradiate the window surface,
Light / dark ratio adjusting means for controlling the light window illumination device according to time and adjusting the ratio of the dark area to the bright area in accordance with the ratio of the shaded portion and the direct solar radiation portion of the window surface at the time A pseudo-window characterized by being provided with. The pseudo window according to any one of claims 1 and 2,
Color temperature adjusting means is provided for controlling the light window illumination device according to time and adjusting the color temperature of the light source of the light window illumination device according to the color temperature of sunlight at the time. A pseudo-window. In the pseudo window as described in any one of Claim 1 to 3,
The pseudo-window, wherein the brightness detecting means is means for detecting the brightness of a landscape video from brightness information included in a video signal sent to the video display device. In the pseudo window as described in any one of Claim 1 to 3,
The luminance detection means uses a luminance sensor provided in at least one of the display unit of the video display device or the display unit of the luminance detection display device that displays the same landscape video as the video display device to A pseudo-window characterized by being a means for detecting.

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