JP2018028965A - Lightening system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lightening system with an image projection function which is more user-friendly.SOLUTION: A lightening system includes a lightening unit for emitting illumination light, and a projection type image display unit for projecting an image, and can switch a turned-on state of an illumination light source of the lightening unit and a light source of the projection type image display unit at least among (1) both of the illumination light source of the lightening unit and the light source of the projection type image display unit are turned off, (2) the illumination light source of the lightening unit is turned on, and the light source of the projection type image display unit is turned off, and (3) the illumination light source of the lightening unit is turned off, and the light source of the projection type image display unit is turned on.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a lighting device.

  A technique for attaching a communication function module that can be attached to a ceiling or a wall surface and that can use various functions to a ceiling light is disclosed in Patent Document 1 below.

JP 2003-16831 A

  However, Patent Document 1 does not disclose any control of lighting of the projector and light emission by the illumination light source. Therefore, there is no disclosure of projector image projection, which is a video projection function in an illumination device having a video projection function, and control of light emission of an illumination light source in the illumination device having a video projection function. Further, in Patent Document 1, only a block diagram and a simple outer shape of the projector are disclosed, and the optical unit of the projector and the layout of the optical element or the arrangement of the optical system and the optical element in the illumination device are considered. The layout is not disclosed. Therefore, with respect to the video projection by the projector that is the video projection function in the illumination device with the video projection function and the light emission control of the illumination light source in the illumination device with the video projection function, the layout of the optical system of the projector and the optical element in the illumination device or the optical There is no disclosure of control in consideration of the arrangement of systems and optical elements.

  Therefore, in the prior art, consideration has not yet been given to user-friendly control for video projection by the projector that is a video projection function and lighting of the light source for illumination light in a lighting device having a video projection function. .

  Therefore, the present invention has been achieved in view of the above-described problems in the prior art, and an object thereof is to provide an illumination device with a video projection function that is more convenient for the user.

  As an embodiment for achieving the above object, an illumination unit that emits illumination light and a projection-type image display unit that projects an image, the illumination light source of the illumination unit and the projection-type image display unit As for the lighting state of the light source, at least (1) the illumination light source of the illumination unit and the light source of the projection video display unit are both turned off, (2) the illumination light source of the illumination unit is turned on, A state in which the light source of the projection type video display unit is turned off and (3) a state in which the illumination light source of the lighting unit is turned off and the light source of the projection type video display unit is turned on are configured to be switchable. That's fine.

  According to the present invention described above, it is possible to provide an illumination device with a video projection function that is more convenient for the user.

It is the perspective view which showed the external appearance structure of the pendant type illuminating device which is one embodiment of this invention with the use environment. It is the perspective view which showed the external appearance structure of the ceiling type illuminating device which is one embodiment of this invention with the use environment. It is a block diagram which shows an example of the internal structure of the illuminating device which concerns on this invention. It is a side view for defining the vertical installation which is arrangement | positioning of the optical unit in the illuminating device which concerns on this invention. It is a perspective view for defining the vertical installation which is arrangement | positioning of the optical unit in the illuminating device which concerns on this invention. It is a side view for defining horizontal placement which is arrangement of an optical unit in an illuminating device concerning the present invention. It is a perspective view for defining horizontal placement which is arrangement of an optical unit in an illuminating device concerning the present invention. It is the side view and bottom view explaining an example of the layout (array) of the optical unit and the light source for illumination in the housing | casing of the illuminating device which concerns on this invention. It is the side view and bottom view explaining an example of the layout (array) of the optical unit and the light source for illumination in the housing | casing of the illuminating device which concerns on this invention. It is the side view and bottom view explaining an example of the layout (array) of the optical unit and the light source for illumination in the housing | casing of the illuminating device which concerns on this invention. It is the side view and bottom view explaining an example of the layout (array) of the optical unit and the light source for illumination in the housing | casing of the illuminating device which concerns on this invention. It is the side view and bottom view explaining an example of the layout (array) of the optical unit and the light source for illumination in the housing | casing of the illuminating device which concerns on this invention. It is the side view and bottom view explaining an example of the layout (array) of the optical unit and the light source for illumination in the housing | casing of the illuminating device which concerns on this invention. It is a figure explaining an example of the lighting control of the projector unit and illumination unit in the illuminating device which concerns on this invention. It is a figure explaining an example of the lighting state of the image projection of the projector unit in the illuminating device which concerns on this invention, and the light source for illumination light of an illumination unit. It is a figure explaining an example of the process in the case of switching the image projection of a projector unit, and the lighting state of the light source for illumination light of an illumination unit by toggle operation in the illuminating device which concerns on this invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

<Pendant type and ceiling type lighting device with video projection function>
First, attached FIG. 1 and FIG. 2 show an external configuration of a lighting apparatus with a video projection function according to an embodiment of the present invention. FIG. 1 shows an illuminating device with a video projection function in which a so-called pendant type illuminating device attached in a form suspended from a ceiling surface is equipped with a video projection function. FIG. 2 shows an illumination device with a video projection function in which a so-called ceiling-type illumination device attached to a ceiling surface is equipped with a video projection function.

  As is apparent from these drawings, the lighting device 10 with a video projection function is used by being attached to, for example, a kitchen, a dining room, a wall surface constituting a space such as a living room or an office, or a ceiling surface 50. Is done. More specifically, as shown in the drawing, it is integrally installed at a predetermined height or ceiling surface above a table or desk 60 installed indoors. These illumination devices 10 with video projection function illuminate the illumination light 2 onto the upper surface or wall surface of a table or desk, and various images 1 on the upper surface (display surface or projection surface) 61 of the table or desk 60. It is an illuminating device which has both the image projection function which projects and displays. In addition, the code | symbol 40 in FIG. 1 has shown the holder for hold | maintaining the pendant type illuminating device 10 in the state suspended from the ceiling surface in the desired position especially. The opening or transmission window 14 will be described later.

  There is a high possibility that a horizontal table or desk or the like on which an image is projected by the image projection function is an object to be illuminated by the illumination function when used without using the image projection function. Therefore, it is desirable that at least a part of the area where the video 1 is projected by the video projection function and the illumination range of the illumination light 2 of the illumination function overlap.

  In addition, it is desirable that the illumination device with a video projection function is configured so that illumination light of the illumination function and an image projected by the video projection function can be turned on / off by installing various control units described later.

  In addition, an operation signal is transmitted from an operation panel 70 (wall surface operation input unit) attached to a wall or the like to the various control units of the illumination device with a video projection function by wire or wireless, and is projected with illumination light of the illumination function and the video projection function. You may control ON / OFF of the image | video to perform.

  FIG. 3 is a block diagram illustrating an example of an internal configuration of the illumination device 300 with a video projection function. The illumination device 300 with a video projection function includes a projection type video display unit 100 having a video projection function and an illumination unit 200 having an illumination light irradiation function.

  An operation signal input unit 301 is an operation button or a light receiving unit of a remote controller, and inputs an operation signal from a user. The human sensor 302 is a sensor that uses infrared rays, ultrasonic waves, visible light, or the like to determine the presence or absence of a human in the vicinity of the illumination device 300 with a video projection function or in a room where the illumination device 300 with a video projection function is installed. The human sensor 302 itself may be an existing human sensor unless otherwise specified in the following description. The voice operation input unit 303 collects voice around the lighting device 300 with a video projection function, performs voice recognition processing, and converts the result of the voice recognition processing into an operation signal. The operation signal generated by the audio operation input unit 303 is used for the operation of each unit of the illumination device 300 with a video projection function.

  The operation detection sensor 350 is a camera that captures a range including a video projection area on the display surface 61, and can detect light reflected by the operation object by detecting invisible light such as an infrared light component. In addition, by setting the cut wavelength of the optical filter of the operation detection sensor 350 to the visible light wavelength range (for example, setting in the middle of the red visible light range), some visible light components other than infrared light (that is, display) It is also possible to photograph a projected image on the screen) together with an infrared light component. Input from the operation detection sensor 350 is used for determination processing of a gesture operation of a user's hand near the video projection area.

  The state output unit 304 includes (1) a lighting state such as ON / OFF of illumination light of the illumination unit 200, and (2) a standby state where the illumination unit 200 is not lit but the illumination unit 200 itself is operating. (3) An error state of the illumination unit 200, (4) a lighting state such as ON / OFF of a light source of the projection type video display unit 100, and (5) a light source of the projection type video display unit 100 is not lit but a projection type The video display unit 100 itself is in a standby state in which it is operating, (6) the error state of the projection type video display unit 100, (7) the operational state of the motion sensor 302 (whether it is in operation), or (8) voice operation input The operation state of the unit 303 (whether it is in operation), (9) the operation state of the operation detection sensor 350 (whether it is in operation), or the like is output or displayed.

  The state output unit 304 may be configured to indicate these plural types of states by changing the colors, light emission periods, and the like of the plurality of LED indicators. In addition, the status output unit 304 may be configured to display characters, marks, and the like on these plural types of states on a liquid crystal monitor, an organic EL monitor, a monitor of another method, or the like.

  The operation signal input unit 301, the human sensor 302, the voice operation input unit 303, the operation detection sensor 350, the state output unit 304, and the like described above are the control unit of the projection video display unit 100 and the control of the illumination unit 200, respectively. You may comprise so that information can be transmitted and received with a part. Thereby, inputs from the operation signal input unit 301, the human sensor 302, the voice operation input unit 303, the operation detection sensor 350, and the like can be used for processing in both the projection display unit 100 and the illumination unit 200, respectively. In addition, the status output unit 304 can collectively indicate the status of both the projection video display unit 100 and the illumination unit 200 with the same LED indicator or monitor.

  Next, the configuration of the projection type video display unit 100 will be described. The projection optical system 101 is an optical system that projects an image onto the display surface 61, and includes a lens and / or a mirror. The display element 102 is an element that modulates transmitted light or reflected light to generate an image. For example, a transmissive liquid crystal panel, a reflective liquid crystal panel, a DMD (Digital Micromirror Device: registered trademark) panel, or the like is used. The display element driving unit 103 sends a drive signal corresponding to the video signal to the display element 102.

  The light source 105 generates light for image projection, and uses a high-pressure mercury lamp, a xenon lamp, an LED light source, a laser light source, or the like. The power source 106 converts an AC current input from the outside into a DC current and supplies power to the light source 105. Further, the power source 106 supplies necessary DC currents to the other units.

  The illumination optical system 104 condenses the light generated by the light source 105, makes it more uniform, and irradiates the display element 102 with it. The cooling unit 115 cools each part, such as the light source 105, the power source 106, or the display element 102, which is in a high temperature state, using an air cooling method or a liquid cooling method as necessary. The operation signal input unit 107 is an operation button or a light receiving unit of a remote controller, and inputs an operation signal from a user. The operation signal input unit 107 may receive an infrared signal or a radio signal from the operation panel 70 of FIG. When a signal from the operation signal input unit 301 of the illumination device 300 is input to the projection display unit 100, the operation signal input unit 107 may be omitted.

  The video signal input unit 131 inputs video data by connecting an external video output device. The audio signal input unit 133 inputs an audio data by connecting an external audio output device. The audio output unit 140 can perform audio output based on the audio data input to the audio signal input unit 133. Further, the audio output unit 140 may output a built-in operation sound or an error warning sound. For example, the communication unit 132 is connected to an external information processing apparatus and inputs / outputs various control signals. The communication unit 132 may perform wired communication or wireless communication with the operation panel 70 of FIG.

  The nonvolatile memory 108 stores various data used for the projector function. The data stored in the nonvolatile memory 108 includes data for various operations in the interactive function described later, display icons, calibration data described later, and the like. The memory 109 stores video data to be projected and control data for the apparatus. The control unit 110 controls the operation of each connected unit. In addition, the control unit 110 may input and output information to and from the operation signal input unit 301, the human sensor 302, the voice operation input unit 303, the operation detection sensor 350, and the like, and control them.

  The interactive function unit 120 is a part that performs an interactive operation such as writing a character or a graphic in the video area when the user operates a light-emitting pen or a finger. For this purpose, the infrared image acquired from the operation detection sensor 350 is analyzed to calculate the position of the light-emitting pen or finger (position operated by the user), operation icons can be synthesized in the projected image, And a function for executing an application that can be operated with a light-emitting pen or a finger, such as an application that performs drawing processing based on the application, or an application that operates an image input from an external video output device.

  Here, the imaging range of the operation detection sensor 350 and the range of the image projected on the display surface 61 (an optical image on the display surface 61 of the image area of the display element 102) are unlikely to coincide with each other. Therefore, when calculating the position operated (drawn) by the user, it is necessary to convert the coordinates in the shooting range of the operation detection sensor 350 and the coordinate position in the video projected on the display surface 61. Therefore, the interactive function unit 120 has a function of performing the conversion process and a process for creating conversion table data (calibration data) for the conversion process.

  The image adjustment unit 160 performs image processing on the video data input by the video signal input unit 131. Examples of the image processing include scaling processing for enlarging, reducing, and deforming the image, bright adjustment processing for changing the brightness, contrast adjustment processing for changing the contrast curve of the image, and components obtained by decomposing the image into light components. Retinex processing for changing the weighting for each.

  The storage unit 170 records video, images, audio, various data, and the like. For example, video, image, audio, various data, etc. may be recorded in advance at the time of product shipment, and video, image, audio, various data, etc. acquired from an external device, an external server, etc. via the communication unit 132 may be used. It may be recorded. Video, images, various data, and the like recorded in the storage unit 170 may be output as projection video via the display element 102 and the projection optical system 101. The sound recorded in the storage unit 170 may be output as sound from the sound output unit 140.

  As described above, the projection type video display unit 100 can be provided with various functions. However, the projection display unit 100 does not necessarily have all the above-described configurations. Any configuration may be used as long as it has a function of projecting an image.

  Next, the configuration of the lighting unit 200 will be described.

  The control unit 201 controls each unit to be connected. In addition, the control unit 201 may input and output information with the operation signal input unit 301, the human sensor 302, the voice operation input unit 303, the operation detection sensor 350, and the like, and control them. An operation signal input unit 203 is an operation button or a light receiving unit of a remote controller, and inputs an operation signal from a user. The operation signal input unit 203 may receive an infrared signal or a radio signal from the operation panel 70 of FIG. When a signal from the operation signal input unit 301 of the illumination device 300 is input to the illumination unit 200, the operation signal input unit 203 may be omitted. The nonvolatile memory 204 stores various data used in the lighting unit 200.

  The power source 202 converts an AC current input from the outside into a DC current and supplies power to the light emitting element drivers (210, 220, etc.). Further, the power source 202 supplies necessary DC currents to the other units. The light emitting element drivers (210, 220, etc.) emit light from the light emitting elements (211, 212, 213, 221, 222, 223, etc.) based on the control of the control unit 201 using the power supplied from the power source 202. The light emitting element serves as a light source of illumination light emitted from the illumination unit 200.

  For example, in the example of FIG. 3, the light emitting element driver A 210 collectively drives n light emitting elements A 1, A 2,... An (211, 212, 213, etc.) connected in series. The light emitting element driver A 210 changes the luminance, color, and the like of these light emitting elements based on the control of the control unit 201. Similarly, the light emitting element driver B220 collectively drives m light emitting elements B1, B2,... Bm (221, 222, 223, etc.) connected in series. The light emitting element driver B220 changes the luminance and color of these light emitting elements based on the control of the control unit 201. With this configuration, it is possible to control the luminance and color of a plurality of light emitting elements for each light emitting element driver. In the example of FIG. 3, two examples of a light emitting element driver and a set of a plurality of light emitting elements are shown, but one or three or more sets may be used. What is necessary is just to increase / decrease as needed.

  With the configuration described above, the illumination unit 200 can emit illumination light with variable brightness and / or color.

  Next, an optical unit including the projection optical system 101, the display element 102, the illumination optical system 104, the light source 105, and the like of the projection type video display unit 100 of FIG. Etc.) will be described.

<Definition of projector optical unit arrangement>
Here, in this specification, arrangement | positioning of the optical unit (30) which comprises a projector is defined as follows.

<Vertical installation of optical unit>
As shown in FIGS. 4 and 5, the vertical placement of the optical unit means that the light flux from the display element 32 (corresponding to reference numeral 102 in FIG. 3) constituting the projector is, for example, various optical elements such as a lens. When the light enters the so-called projection optical system 34 (corresponding to reference numeral 101 in FIG. 3), the incident direction of the light beam or the optical axis of the projection optical system 34 on which the light beam is incident A state arranged in a direction substantially perpendicular to a plane perpendicular to the surface) or a state closer to the vertical direction than a direction parallel to the horizontal plane. 4 and 5, the z direction is the vertical direction, that is, the direction perpendicular to the horizontal plane.

  According to such a layout, the optical image of the display element 32 can be formed on the horizontal plane by the light emitted from the projection optical system 34. Although not shown here, there are various layouts in the optical system from the light source (corresponding to reference numeral 105 in FIG. 3) to the display element 32. For example, the display element 32 may be a transmissive type or a reflective type. There are things such as molds. Various types of optical systems are known, such as one having a layout with one display element 32 and one having a plurality of display elements. However, when downsizing the optical unit case in the vertical layout shown in FIGS. 4 and 5, the optical unit is thinned in the z direction in the drawing in consideration of the layout of the display element 32 and the projection optical system (34). It is not easy.

  Further, in the vertical layout of the optical unit 30, it is easy to reduce the thickness of the optical unit in the y direction compared to other directions. Therefore, when the size of the optical unit case is reduced in the vertical layout, as shown in the perspective view of FIG. 5, an optical unit that is thinner in the y direction than in the z direction is formed.

  4 and 5, if the relative position setting of the center position of the display element 32 and the optical axis of the projection optical system 34 in the xy plane is changed, the optical image of the display element on the horizontal plane can be changed. The position can be changed. As a result, the position of the projected image on the horizontal plane can be freely set according to the design needs.

<Horizontal installation of optical unit>
As shown in FIGS. 6 and 7, the horizontal placement of the optical unit means that the light flux from the display element 32 (corresponding to reference numeral 102 in FIG. 3) constituting the projector is, for example, various optical elements such as a lens. When the light enters the so-called projection optical system 34 (corresponding to reference numeral 101 in FIG. 3), the incident direction of the light beam or the optical axis of the projection optical system 34 on which the light beam is incident is relative to the horizontal plane. The state arrange | positioned in the substantially parallel direction, or the state arrange | positioned so that it may become a direction closer to the direction parallel to a horizontal surface rather than a perpendicular direction. 6 and 7, the z direction is the vertical direction, that is, the direction perpendicular to the horizontal plane.

  According to such a layout, the light beam of the projection optical system 34 is reflected by the reflection mirror 35 and the like, and an optical image of the display element 32 can be formed on the horizontal plane. Although not shown here, there are various layouts in the optical system from the light source (corresponding to reference numeral 105 in FIG. 3) to the display element 32. For example, the display element 32 may be a transmissive type or a reflective type. There are things such as molds. Various types of optical systems are known, such as one having a layout with one display element 32 and one having a plurality of display elements. However, in the case where the horizontal unit layout shown in FIGS. 6 and 7 is used to reduce the size of the optical unit case, considering the layout of the display element 32 and the projection optical system 34, the optical unit can be thinned in the y direction in the figure. It's not easy.

  However, in the horizontal layout of the optical unit 30, it is easy to reduce the thickness of the optical unit in the z direction compared to other directions. Therefore, when the size of the horizontal layout optical unit case is reduced, an optical unit thinner in the z direction than in the y direction is formed as shown in the perspective view of FIG.

  6 and 7, the position of the optical image of the display element on the horizontal plane can be changed by changing the relative position setting of the center position of the display element 32 and the optical axis of the projection optical system 34 in the xz plane. Can be changed. As a result, the position of the projected image on the horizontal plane after being reflected by the reflecting mirror 35 can be freely set according to design requirements.

  6 and 7, the reflective optical element such as the reflective mirror 35 is disposed after the projection optical system, but may be disposed between optical elements such as a plurality of lenses included in the projection optical system.

  In the examples of FIGS. 6 and 7, the reflection mirror 35 may be considered as a separate body from the optical unit, or may be considered as part of the optical unit.

  Hereinafter, a specific layout (arrangement) of the optical unit 30 and the illumination light source of the illumination device with a video projection function will be described with reference to FIGS. 8 to 13, a plurality of semiconductor light emitting elements (LEDs) 22 correspond to the light emitting elements (211, 212, 213, 221, 222, 223, etc.) in FIG. 3. Further, the entire illumination light source including an assembly of a plurality of semiconductor light emitting elements (LEDs) 22 is described as the illumination light source 20.

  8 to 13, the dotted lines in the side views indicate the diffusion range of the illumination light of the illumination unit 200, and the triangle extending from the optical unit 30 is the projection from the optical unit 30 of the projection type video display unit 100. The irradiation area of the image is seen from the side.

  8 to 13 also show an example in which a stringing type toggle switch described later with reference to FIG. 14 is attached. Each figure shows a string portion 90 (which may be made of a fiber or a metal chain) and a tip portion 91 of a string pull type toggle switch. When attaching the drawstring type toggle switch, as shown in each figure, the tip portion 91 is within the diffusion range of the illumination light of the illumination unit 200, and the projection image from the optical unit 30 of the projection type image display unit 100 is displayed. It is desirable to lay out outside the irradiation area. Since the illuminating device with a video projection function can be miniaturized by attaching the string pull type toggle switch to the lower side of the housing 11, the string portion 90 and the tip portion 91 of the string pull type toggle switch are illuminated by the illumination unit 200. Arrange within the light diffusion range.

  At this time, as shown in FIGS. 8 to 13, when a plurality of semiconductor light emitting elements are used as the light source of the illumination light of the illumination unit 200, the string portion 90 and the tip portion 91 of the string pull type toggle switch emit light from a plurality of directions. Since the shadow is caused by the string portion 90 or the tip portion 91 of the string pulling type toggle switch to the light source of the illumination light of the illumination unit 200, the shadow is diminished by a plurality of light beams having different irradiation angles. The problem is less likely to occur. On the other hand, the light of the projection image from the optical unit 30 is all emitted from the emission port of the optical unit 30. Therefore, when the string portion 90 and the tip portion 91 of the string pull type toggle switch are in the projection image irradiation area from the optical unit 30, the string portion 90 and the tip portion 91 of the string pull type toggle switch correspond to the projection image. The resulting shadow will result in a loss of video, and the quality will be very poor.

  Therefore, when attaching the drawstring type toggle switch to the illumination device with the image projection function, as shown in each drawing, the tip end portion 91 is within the diffusion range of the illumination light of the illumination unit 200, and the projection image display unit 100 It is desirable to lay out so that it is outside the irradiation area of the projected image from the optical unit 30.

<Pendant type lighting device with video projection function>
First, FIGS. 8A and 8B are a side cross-sectional view and a bottom view of a pendant illumination device 10 with a video projection function. In this example, the optical unit 30 is arranged in a vertical layout. A substrate 21 of an illumination light source 20 including a plurality of semiconductor light emitting elements (LEDs) 22 is attached to the bottom surface inside the main body (shade) 11. Furthermore, a diffusion plate 12 is attached to the lower opening surface of the figure so as to cover it.

  Further, in the space formed by the housing 11 and the diffusion plate 12, the optical unit 30 is disposed so as to be located at a substantially central portion of the illumination light beam. In the example of FIG. 8, an opening or a transmission window 14 is provided on the diffusion plate 12 at a position where the projection light is emitted downward from the optical unit 30. If there is a diffusion effect on the entire surface of the diffusing plate 12 without providing an opening or a transmission window, the projection image emitted from the optical unit 30 is diffused, and an image can be formed on the image projection target surface such as a table or a desk. Because it will disappear.

  The opening or the portion of the transmission window 14 may be an opening in which the diffusion plate 12 is cut out, or may be a transmissive substance such as glass having no diffusion effect. In the case of a transmissive window formed of a transmissive material or the like, it can be configured such that dust or the like is less likely to enter the diffusing plate 12, but in order not to affect the projected image emitted from the optical unit 30 as much as possible. In the wavelength range of the projection light emitted from the unit 30, the coating should have a characteristic as flat as possible in the spectral range.

  The periphery of the opening or the transmission window 14 does not need to be directly connected to the diffusion plate 12, and in order to make the shadow of the optical unit 30 on the diffusion plate 12 difficult to see, the opening or the transmission window 14 and the diffusion plate 12. An area such as a decorative board may be provided between the two. In other words, the opening or the transmission window 14 is a passage opening or transmission necessary for emitting image projection light projected from the optical unit 30 arranged in a space formed by the housing 11 and the diffusion plate 12. It is a mouth, and the position thereof may be the diffusion plate 12 or a part of another structure.

  According to such a layout (arrangement), the optical unit 30 can be thinned in a direction parallel to the horizontal plane, so that the shadow formed by the optical unit 30 with respect to the illumination area from the illumination light source 20 to the diffusion plate 12 can be reduced. It becomes possible to reduce the ratio. This suppresses the appearance quality of the lighting device from being deteriorated due to the influence of the shadow of the optical unit 30 formed on the diffusion plate 12 (that is, an uncomfortable feeling as a lighting device due to the shadow on the diffusion plate 12). It becomes possible to do. Moreover, even when the above-described casing 11 is formed of a diffusion plate, the shadow of the optical unit 30 is not noticeable, and it is possible to suppress deterioration in the appearance quality of the illumination device.

  In the example of FIGS. 9A and 9B, the optical units 30 are arranged in a horizontal layout. The optical unit 30 is disposed above the substrate 21 for the illumination light source 20. For example, the optical unit 30 may be attached to the upper surface of the substrate 21 or may be attached to the housing 11. The entire illumination device with a video projection function can be further thinned in the vertical direction to realize a thinner illumination device with a video projection function. In the case of the modification, the diffusion plate 12 attached so as to cover the opening below the illumination light source 20 has an opening or a transparent window for transmitting the image light from the optical unit 30. Compared to that of the above, it is formed with a larger size. Further, an opening (or transmission window) 26 for transmitting the projection light from the optical unit 30 is formed at a part of the diffusion plate 12, that is, at a position where the optical unit 30 is disposed.

  According to such a configuration, it is possible to realize an illumination device with a video projection function having a thinner structure, and the optical unit 30 is disposed on the back side of the substrate 21. Therefore, the illumination light from the illumination light source 20 is provided. The shadow is not formed by shielding the screen. As a result, it is possible to prevent deterioration in the appearance quality of the lighting device (that is, a feeling of strangeness as a lighting device due to a shadow on the diffusion plate 12).

  At this time, the size of the opening (or transmission window) 26 of the substrate 21 can be made as small as possible by making the lower surface of the optical unit 30 substantially coincide with the upper surface of the substrate 21. Thereby, it becomes possible to arrange a plurality of semiconductor light emitting elements (LEDs) 22 on the substrate 21 more efficiently.

  FIGS. 10A and 10B are a side cross-sectional view and a bottom view of the pendant illumination device 10 with a video projection function. In this example, the optical units 30 are arranged in a vertical layout. Further, the optical unit 30 attached to the inside of the casing 11 is arranged so as to be positioned at the end of the illumination light beam.

  According to this layout (arrangement), the optical unit 30 is arranged so as to be positioned at the end of the illumination light beam, and the optical axis of the projection optical system and the position of the center of the display element are set in the optical unit 30 in the horizontal direction. By relatively shifting, the center of the projected image is projected closer to the center of the illumination light beam of the illumination light source 20 with respect to the exit of the projection optical system of the projector.

  Furthermore, according to the arrangement shown in FIG. 10, a so-called stationary projector that is usually used by being placed on a desk can be used as it is. This is because many stationary projectors are already set by shifting the position of the optical axis of the projection optical system and the center of the display element. Therefore, the illumination device with a video projection function in FIG. 10 has a structure suitable for cost reduction. This effect is also the same effect that occurs in other configuration examples in which the optical unit 30 is positioned at the end of the downward illumination light beam.

  Further, in the layouts of FIGS. 10A and 10B, the semiconductor light emitting elements (LEDs) 22 are arranged on both surfaces of the substrate 21 for the illumination light source 20. Thereby, it is possible to irradiate illumination light upward as well as downward. According to such a configuration, it is possible to irradiate illumination light also above the illumination device 10 with a video projection function, and the upper illumination can also illuminate the ceiling or the like, and thus functions as indirect illumination (ceiling-side indirect illumination function). In this example, in addition to the diffusion plate 12 (lower diffusion plate) on the opening surface of the lower surface of the housing (shade) 11, the diffusion plate 12 (upper diffusion plate) so as to cover the opening surface of the upper surface of the housing (shade) 11. ) Is attached.

  In addition, by adopting a configuration having an illumination function having a plurality of irradiation directions with different directions and a video projection function, switching of the irradiation combination mode between the plurality of irradiation lights and the projected video can be realized. . For example, a mode in which only the projected image is irradiated downward, a mode in which irradiation light is irradiated downward and no image is projected, a mode in which irradiation light is irradiated and no image is projected, and irradiation light is irradiated upward and downward You may perform control which switches the mode etc. which project a projection image | video.

  In FIG. 10, the optical unit 30 is arranged at the end of the illumination light beam of the downward illumination light, but the optical unit 30 is arranged at the center of the illumination light beam of the downward illumination light. May be.

  In the example of FIGS. 11A and 11B, the optical unit 30 is arranged in a horizontal layout. In addition, the end portion of the substrate 21 for the illumination light source 20 is formed in a cylindrical shape by extending in the vertical direction, and further, the flange portion is formed by extending in the horizontal direction. Further, a plurality of semiconductor light emitting elements (LEDs) 22 are attached to the upper and lower surfaces of the substrate 21, the outer peripheral surface of the cylindrical portion, and the lower surface of the collar portion. Also in this example, the optical unit 30 is disposed so as to be positioned substantially at the center of the downward illumination light beam. Note that the arrangement of the optical unit 30 may not be the substantially central portion of the illumination light beam of the downward illumination light. You may arrange | position near the edge side of the illumination light beam of the downward illumination light, ie, the side surface of a cylinder.

  In addition to the diffusion plate 12 (lower diffusion plate) on the lower surface of the housing 11, the diffusion plate 12 (upper circumferential diffusion plate) covers the upper surface of the housing 11 and a part of the outer periphery (upper portion). Is attached. According to such a configuration, in addition to the above-described effect, it is possible to irradiate the illumination light to the surroundings without including the upper surface and the side of the illumination device 10 with the video projection function. Can also be used as an indirect lighting (ceiling side indirect lighting function + wide range lighting function).

  In addition, by adopting a configuration having an illumination function having a plurality of irradiation directions with different directions and a video projection function, switching of the irradiation combination mode between the plurality of irradiation lights and the projected video can be realized. . For example, a mode in which only the projected image is irradiated downward, a mode in which irradiation light is irradiated downward and no image is projected, a mode in which irradiation light is irradiated sideways and no image is projected, and irradiation light is irradiated downward and sideways. You may perform control which switches the mode etc. which project a projection image | video in the downward direction while irradiating irradiation light to the side which does not project an image | video.

<Ceiling type lighting device with video projection function>
First, FIGS. 12A and 12B are a side cross-sectional view and a bottom view of a ceiling type lighting apparatus 10 with a video projection function. In this example, the optical unit 30 is arranged in a horizontal layout. Further, a substrate 21 of an illumination light source 20 having a plurality of semiconductor light emitting elements (LEDs) 22 is attached to the bottom surface inside the housing 11 which is a main body, and this is covered on the lower opening surface side of the figure. As described above, the diffusing plate 12 is attached, and the optical unit 30 is disposed inside the diffusing plate 12 so as to be positioned at a substantially central portion of the illumination light beam.

  According to such a layout (arrangement), it is possible to realize an illuminating device with a video projection function that is thin as a whole in the vertical direction as an illuminating device with a video projection function, that is, a thin structure.

  In general, a general ceiling-type lighting device having no image projection function is thinly and widely configured on the ceiling surface. Therefore, even a lighting device with a video projection function can be easily replaced with a conventional general ceiling type lighting device by realizing a thin structure as shown in FIGS. 12 (A) and 12 (B). Value can be increased.

  Furthermore, in the example of the ceiling-type lighting device with a video projection function 10 shown in FIGS. 13A and 13B, the optical unit 30 is arranged in a horizontal layout. Further, the end of the substrate 21 for the illumination light source 20 is formed in a cylindrical shape by extending in the vertical direction, a plurality of semiconductor light emitting elements (LEDs) 22 are attached to the bottom surface, and the outer periphery of the cylindrical substrate 21 is attached. In this example, a plurality of semiconductor light emitting elements (LEDs) 22 are attached to the surface. Thereby, it is possible to irradiate the illumination light to the side in addition to the lower side.

  In this example, the optical unit 30 is arranged so as to be positioned at a substantially central portion of the downward illumination light beam. Note that the arrangement of the optical unit 30 may not be the substantially central portion of the illumination light beam of the downward illumination light. You may arrange | position near the edge side of the illumination light beam of the downward illumination light, ie, the side surface of a cylinder. In addition to the diffusion plate 12 (lower diffusion plate) on the opening surface of the lower surface of the housing 11, a diffusion plate 12 (side diffusion plate) is attached to the outer periphery of the housing 11. According to such a configuration, in addition to the above-described effect of horizontally placing the optical unit, it is possible to irradiate illumination light to the side of the illumination device 10 with a video projection function (a wide range of illumination functions).

  According to such a layout (arrangement), it is possible to realize a thin illumination device with a video projection function that is thin in the vertical direction as an illumination device with a video projection function, and also illuminate the side of the illumination device 10. Can irradiate light (a wide range of lighting functions).

  In the example of FIG. 13, as in FIG. 10 or FIG. 11, the illumination function has a plurality of irradiation directions with different directions. Therefore, as described in FIG. 10 or FIG. Switching control of a plurality of modes may be performed for the projection video of the video projection function.

  Next, the projection of the illumination light source of the illumination unit (reference numeral 200 in FIG. 3) and the projection type video display unit (reference numeral 100 in FIG. 3) in the illumination device with an image projection function (reference numeral 300 in FIG. 3) having the above-described configuration. An example of lighting control of the image light source will be described with reference to FIG. In the following description and drawings, “PJ unit” is an abbreviation for a projector unit, that is, a projection type video display unit.

  In FIG. 14, the lighting control example in the illuminating device with a video projection function of one Example of this invention is enumerated. “Operation hardware” in the table in FIG. 14 indicates a configuration in which a user performs an operation. “Configuration and control” indicates the configuration of each “operation hardware” and its control example. The illumination device with a video projection function according to an embodiment of the present invention may be equipped with any one of the functions of a plurality of lighting control examples illustrated in FIG. Or you may mount the function of the some lighting control example among the lighting control examples in a table | surface.

  The lighting control example 1 includes a lighting unit ON / OFF operation button and a PJ unit ON / OFF operation button in any one or each of the operation input unit 301, the wall surface operation input unit, and the remote controller. This is an example in which lighting of each unit can be arbitrarily switched ON / OFF.

  In the lighting control example 2, the operation input unit 301 or the wall surface operation input unit is configured by a touch sensor, and a touch sensing area for each of the illumination unit and the PJ unit is provided. In this example, each lighting can be turned on / off.

  In the lighting control example 3, the operation input unit 301 or the wall surface operation input unit is configured by a touch sensor, and the touch sensing area related to lighting unit lighting and the touch sensing area related to the PJ unit are shared, and according to the number of touch detections in the area, This is an example in which a plurality of lighting states including lighting ON / OFF of the lighting unit and lighting ON / OFF of the PJ unit can be switched by a toggle operation.

  The lighting control example 4 includes a rotation switch in the operation input unit 301 or the wall surface operation input unit, and includes a plurality of lighting units ON / OFF and PJ unit lighting ON / OFF according to the rotation angle or position of the rotation switch. It is the example comprised so that the lighting state of could be switched.

  In the lighting control example 5, the operation input unit 301 is configured by a string pulling type toggle switch, and includes lighting ON / OFF of the lighting unit and lighting ON / OFF of the PJ unit according to the number of string pulls by the string pulling type toggle switch. In this example, a plurality of lighting states can be switched by a toggle operation.

  In the configuration of the lighting control example 2, the lighting control example 3, the lighting control example 4, and the lighting control example 5, the configuration of the operation means close to a conventional lighting device having no video projection function, such as a touch sensor, a string-type toggle switch, and a rotation switch. Can be used to switch on / off the PJ unit. Therefore, there is an effect that the user does not need to newly learn a special operation and can intuitively understand the operation even when using it for the first time.

  The lighting control example 6 is an example in which the wall operation input unit has one ON / OFF switch and the remote controller is provided with buttons for both lighting ON / OFF of the lighting unit and lighting ON / OFF of the PJ unit. In this case, only the lighting unit is turned ON by the ON operation from the wall operation input unit, and the PJON / OFF operation and the illumination OFF / ON operation from the remote controller can be performed while the wall operation input unit is ON, and then the wall operation input unit The lighting unit and the PJ unit can be controlled to be turned off (turned off) by an OFF operation. In this case, if the configuration of the wall surface operation input unit is simplified and only the wall surface operation input unit is used, it can be handled in the same manner as a conventional lighting fixture without a video projection function, and operation compatibility with conventional devices is high. Easy to handle for users.

  The lighting device with a video projection function according to an embodiment of the present invention can switch a plurality of lighting states including lighting ON / OFF of the lighting unit and lighting ON / OFF of the PJ unit by the lighting control described with reference to FIG. . Next, a specific example of the plurality of lighting states will be described with reference to FIG. In the table of FIG. 15, “illumination unit” ON / OFF means the illumination light source of the illumination unit is turned on / off, and “PJ unit” is ON / OFF means the image projection light source of the projection type video display unit. Indicates that the LED is on / off. In the “variation example” column, there is an explanation when there are a plurality of types in the “ON” or “OFF” state.

  The lighting states switched by the illumination device with a video projection function according to the embodiment of the present invention include, for example, lighting states 1, 2, 3, 4 and the like in the table of FIG. Here, the lighting state 1 is a state in which both the illumination light source of the illumination unit and the image projection light source of the projection type video display unit are OFF. The lighting state 2 is a state in which the illumination light source of the illumination unit is ON and the image projection light source of the projection display unit is OFF. The lighting state 4 is a state in which the illumination light source of the illumination unit is OFF and the image projection light source of the projection type video display unit is ON. It is desirable that the lighting device with a video projection function can be switched between the above lighting states 1, 2, and 4. Furthermore, the illumination device with a video projection function may include a lighting state 3 in which both the illumination light source of the illumination unit and the video projection light source of the projection type video display unit are ON.

  There are various modes in the lighting state 3. For example, (1) In the lighting state 3, the illumination light source of the lighting unit is set to the lighting state of the lighting state 2, and the light source for image projection of the projection type video display unit is set to the lighting state of the lighting state 4, Good.

  Further, (2) lighting of the illumination light source of the lighting unit in the lighting state 3 may reduce the light amount (decreasing the luminance) as compared with lighting of the illumination light source of the lighting unit in the lighting state 2. This is to make it easy to see the projected image of the projection-type image display unit. The light quantity changing process can be performed by the control unit 201 of the illumination unit 200 in FIG. 3 controlling the light emitting element driver.

  Further, (3) lighting of the illumination light source of the lighting unit in the lighting state 3 may change the number of light emitting elements to be turned on rather than lighting of the illumination light source of the lighting unit in the lighting state 2 (the number of lighting light emitting elements). Decrease). This is also for making it easy to see the projected image of the projection-type image display unit. The changing process of the number of light emitting elements can be performed by the control unit 201 of the illumination unit 200 in FIG. 3 controlling the light emitting element drivers and changing the number of light emitting element drivers to be driven. For example, some of the light emitting element drivers may be driven and some of the light emitting element drivers may not be driven.

  Further, (4) lighting of the illumination light source of the illumination unit in the lighting state 3 may be switched to a light distribution characteristic different from the light distribution characteristic in lighting of the illumination light source of the lighting unit in the lighting state 2. Here, the switching of the light distribution characteristics is the illumination light with a plurality of illumination directions when illumination light can be emitted in a plurality of directions in the illumination device with a video projection function having the layout shown in FIGS. It is to change each light quantity. For example, in the lighting state 2, in addition to the irradiation light in the downward direction, illumination light in the peripheral direction and the ceiling direction is emitted simultaneously. In the lighting state 3, the illumination light in the peripheral direction and the ceiling direction is left as it is or the amount of light is reduced. Only the downward irradiation light may be turned off.

  Or, in the lighting state 2, in addition to the irradiation light in the downward direction, the illumination light in the peripheral direction and the ceiling direction is emitted simultaneously. In the lighting state 3, the illumination light in the peripheral direction and the ceiling direction also reduces the light amount. The amount of light emitted from the downward direction may be reduced at a higher rate than the illumination light from the surrounding direction or the ceiling direction. Alternatively, in the lighting state 2, the downward irradiation light may be irradiated, and in the lighting state 3, the downward irradiation light may be turned off and the illumination light in the peripheral direction or the ceiling direction may be turned on. In either case, the ratio of the downward illumination light to the total illumination light amount of the illumination light in the peripheral direction and the ceiling direction and the illumination light in the downward direction is lowered in the lighting state 3 than in the lighting state 2, thereby projecting. It is possible to make the projection image of the type image display unit easier to see.

  In the lighting unit 200 in FIG. 3, the lighting unit 200 in FIG. 3 changes the light emitting element sets controlled by a plurality of light emitting element drivers in different light distribution directions, and the control unit 201 controls the lighting state 2 and the lighting state. 3 is possible by controlling the brightness and the number of light emitting elements of each light emitting element driver.

  In addition, when changing from the lighting state 2 to the lighting state 3, when changing a light quantity or a light distribution characteristic, you may make it switch instantaneously, but you may make it switch gradually. There is a possibility that the user will recognize that the quality of operation as a product is higher when switching gradually.

  Next, a specific example in the case of switching a plurality of lighting states by a toggle operation in the lighting control example in the lighting device with a video projection function in FIG. 14 will be described.

  FIG. 16A shows a first toggle operation example. About each lighting state demonstrated in FIG. 15, you may comprise so that it may return to lighting state 1-> lighting state 2-> lighting state 4-> lighting state 1 and it may be repeated.

  FIG. 16B shows a second toggle operation example. Each lighting state described with reference to FIG. 15 may be configured so as to return to lighting state 1 → lighting state 2 → lighting state 3 → lighting state 4 → lighting state 1 and repeat.

  FIG. 16C shows a third toggle operation example. The lighting state 3 in the second toggle operation example may be divided into a plurality of lighting states (pattern 1 and pattern 2) having different light amounts, the number of lighting light emitting elements, and light distribution characteristics, and switching may be performed. In the third toggle operation example, when the lighting state 3 is divided into a plurality of lighting states having different amounts of light, number of lighting light emitting elements, and light distribution characteristics, the illumination light superimposed on the PJ light immediately before the switch is switched. If it is set to be equal to or less than this state, the change in the amount of illumination light is naturally connected to the lighting state 4 in which the illumination light is turned off, so that there is little discomfort to the user.

  As described above, according to the configuration and control of the illumination device with the image projection function according to the embodiment of the present invention described with reference to FIGS. 14 to 16, the illumination light source of the illumination unit and the image projection light source of the projection image display unit It is possible to switch between lighting / extinguishing suitably, which is convenient for the user.

<Various modifications>
In addition, you may use the following modifications as an Example of the illuminating device with a video projection function of this invention demonstrated above.

  In the configuration of FIG. 3, the illumination unit 200 and the projection type video display unit 100 are each provided with a power source having an AC / DC conversion function, but the AC / DC conversion function is provided within the illumination device 300 with a video projection function. Only one power source may be provided, and the DC power source may be distributed thereafter. One AC power cable is connected to the illumination device 300 with a video projection function, which is convenient for the user.

  -You may consider the detection result of the human sensor 302 of FIG. 3 to the lighting control demonstrated in FIGS. For example, when a motion object is detected by the human sensor 302, the light source of the illumination unit 200 may be turned on. Further, for example, when the moving object is detected by the human sensor 302, the light source of the illumination unit 200 may be turned on. Further, the human sensor 302 determines the distance between the moving object and the lighting device with the video projection function, and when the moving object is at a long distance, the light source of the lighting unit 200 is turned on, and the moving object gets closer to the short distance. In this case, in addition to the lighting of the light source of the illumination unit 200, the light source of the projection display unit 100 may be turned on.

  In the lighting state of FIG. 15, the image processing in the image adjustment unit 160 of FIG. 3 may be changed between the lighting state 2 and the lighting state 3. For example, in the lighting state 3, image processing such as brightness adjustment, contrast adjustment, and retinex processing may be changed so that the video looks brighter than in the lighting state 2.

  In the above, the illuminating device with a video projection function which becomes various Example of this invention was described. However, the present invention is not limited to the above-described embodiments, and includes various modifications. For example, the above-described embodiments are described in detail for the entire system in order to explain the present invention in an easy-to-understand manner, and are not necessarily limited to those having all the configurations described. Further, a part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment. Further, it is possible to add, delete, and replace other configurations for a part of the configuration of each embodiment.

DESCRIPTION OF SYMBOLS 10 ... Illuminating device, 11 ... Main body (shade) (shade), 12 ... Diffuser, 20 ... Light source for illumination, 22 ... Semiconductor light emitting element (LED), 30 ... Optical unit, 32 ... Display element, 34 ... Projection optical system 35 ... Reflective mirror.

Claims (1)

An illumination unit that emits illumination light;
A projection-type image display unit that projects images; and
With
About the lighting state of the illumination light source of the illumination unit and the light source of the projection video display unit, at least,
(1) The illumination light source of the illumination unit and the light source of the projection type video display unit are both turned off.
(2) The illumination light source of the illumination unit is turned on, and the light source of the projection display unit is turned off.
(3) The illumination light source of the illumination unit is turned off, and the light source of the projection display unit is turned on.
It is possible to switch the lighting device.

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