WO2016060086A1

WO2016060086A1 - Illuminating device

Info

Publication number: WO2016060086A1
Application number: PCT/JP2015/078797
Authority: WO
Inventors: 長平小野; 賀来　信行; 一臣金子
Original assignee: 日立マクセル株式会社
Priority date: 2014-10-14
Filing date: 2015-10-09
Publication date: 2016-04-21
Also published as: JP2016081627A

Abstract

Provided is an illuminating device wherein a light source of illuminating light and an image projection unit are more suitably disposed. An illuminating device 10 has an illuminating light source 20 that is disposed in a housing 11, and performs illumination by diffusing illuminating light via a diffusion plate 12 attached to a part of the housing 11, said illuminating light having been emitted from the illuminating light source 20. The illuminating device is configured by disposing, in the housing 11, an image projection unit 30 for projecting and displaying image light on a projection surface, said image projection unit being disposed at a position further than, with respect to the center of the illuminating light, the position where the illuminating light source 20 is disposed.

Description

Lighting device

The present invention relates to a lighting device that is mounted on a ceiling and performs indoor lighting, for example.

The one that is attached to a ceiling or a wall and has a communication function module that can use various functions attached to a ceiling light is already known in Patent Document 1 below. It also includes a video display function with a small projector.

Also, a lighting fixture that can display a video image of a TV after turning off the illumination by providing the lighting fixture with a video display function of a projector or the like is already known from Patent Document 2 below.

Furthermore, an illumination device with an image projection device that enables a space effect combining illumination light and video is already known from Patent Document 3 below.

JP 2003-16831 A JP 2006-86024 A JP 2012-186118 A

However, the illumination device known from the above-described prior art has not sufficiently considered the efficient arrangement of the light source of illumination light and the optical system of the projector.

Accordingly, the present invention has been achieved in view of the above-described problems in the prior art, and provides an illumination device in which a video projection unit such as a light source of illumination light and an optical system of a projector is more suitably arranged. For that purpose.

In order to achieve the above object, according to the present invention, first, a light source is arranged inside a casing of a predetermined shape, and illumination light from the light source is diffused through a diffusion plate attached to a part of the casing. A video projection unit for projecting and displaying video light in the vicinity of the periphery of the light source inside the housing, and the video projection unit projects video to be projected Provided is a lighting device arranged so that the optical axis of light projects toward an area irradiated with illumination light from the lighting device.

According to the present invention described above, it is possible to provide an illuminating device in which an illumination light source and a video projection unit are more suitably arranged.

It is the perspective view which showed the external appearance structure of the illuminating device which becomes one embodiment of this invention with the use environment. In order to show the internal structure of the said illuminating device, it is the figure seen from the lower part, removing a part of diffusion plate. It is a figure which shows the specific example of the light source for illumination in the said illuminating device. It is a side view for showing the internal structure of the said illuminating device. It is a perspective view which shows the other structural example of the video projection unit which comprises the said illuminating device. It is a figure which shows the arrangement configuration inside the illuminating device which becomes a modification of this invention. It is a figure explaining the positional relationship of the video display element (liquid crystal panel) of a video projection unit, and a projection optical system, and the relationship of the projection image obtained by it, and the illumination by an illuminating device. It is a figure explaining the positional relationship of the video display element (liquid crystal panel) of a video projection unit, and a projection optical system, and the relationship of the projection image obtained by it, and the illumination by an illuminating device. It is a figure explaining the positional relationship of the video display element (liquid crystal panel) of a video projection unit, and a projection optical system, and the relationship of the projection image obtained by it, and the illumination by an illuminating device. It is a figure which shows the relationship between arrangement | positioning of the said video projection unit, and a video aspect. It is a figure which shows the relationship between arrangement | positioning of the said video projection unit, and a video aspect. It is a figure explaining the holder for suspending the said illuminating device from a ceiling surface. It is a block diagram which shows the detailed circuit structure inside the video projection unit of the said illuminating device.

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

First, attached FIG. 1 shows an external configuration of a lighting device according to an embodiment of the present invention. As is apparent from the drawing, this lighting device 10 is, for example, a kitchen, a dining room, or This is a so-called hanging illumination device that is used by being attached to a wall surface, particularly a ceiling surface 50, constituting a living room or a space such as an office. More specifically, as shown in the figure, the table is installed at a predetermined height above the table or desk 60 installed in the room and irradiates the illumination light onto the table or desk, and the table. Or it has both the function to project and display various images on the upper surface (display surface or projection surface) 61 of the desk 60.

FIG. 2 shows the internal configuration of the lighting device 10 described above. As is apparent from this figure, as an example, a substantially cylindrical or conical main body (for example, formed by synthetic resin mold molding) (Also referred to as a housing) (shade) 11, which will be described in detail below, for example, an illumination light source 20 (here, a broken line) in which a plurality of semiconductor light emitting elements (LEDs) are arranged in a planar shape. And a video projection unit 30 that is a small projector for projecting and displaying various video images. In addition, the code | symbol 12 in a figure is provided so that the lower opening part of the said main body 11 may be covered, and what is called a diffuser plate for diffusing the illumination light from the said light source 20 for illumination and irradiating uniformly downward is provided. Show. In the above description, the outer shape of the main body (shade) 11 has been described as a cylinder or a cone. However, the present invention is not limited to this and may have other shapes, for example, a box shape.

In the illuminating device 10 of the present embodiment, for example, (1) both the illumination light that irradiates the upper surface of the table or desk and the image that is projected onto the display surface 61 of the table or desk 60, (2) the illumination You may comprise so that it can switch and use the state which irradiates only light, (3) the state which projects only an image | video. In addition to these states, (4) a state in which illumination light and an image are projected may be enabled. These switching may be signal switching by a physical switch, and a control unit (not shown) for controlling both the illumination light source 20 and the video projection unit 30 is provided, and each is controlled based on an operation input from a remote controller or the like. It may be configured.

FIG. 3 shows a specific example of the illumination light source 20 described above, and this figure is a bottom view of the illumination device 10 as viewed from below with the diffusion plate 12 removed. As is clear from this figure, for example, a plurality (10 in this example) of semiconductor light emitting elements (LEDs) 22 are provided on the surface of the disk-shaped substrate 21 made of a metal having excellent thermal conductivity. They are arranged and mounted so that substantially uniform irradiation light can be obtained.

In addition, the image projection unit 30 is located at a position outside the region where the semiconductor light emitting element (LED) 22 is provided in a part of the disk-shaped substrate 21, that is, near the outer periphery of the disk-shaped substrate 21. Is provided. Note that the video projection unit 30 is set so that the projected video is located inside the illumination light irradiation area of the illumination device 10 as is apparent from FIG. Further, as will be described later, in order to realize the interactive function of the video projection unit, a camera as a sensor attached to a part thereof may be provided. The camera detects, for example, an infrared light component in an imaging range including the display surface 61. According to this, the user's action is photographed or from an operation article operated by the user. By detecting the reflected light, the user's operation content can be detected.

In this example, as shown also in FIG. 2, the light from the light source 31 (for example, a semiconductor light emitting element (LED)) of the image projection unit 30 is a reflection type image such as DMD (Digital Micromirror Device: registered trademark). The light is modulated into video light by a display unit 32 including a display element (or a transmissive video display element such as a liquid crystal panel), and is projected to the outside via a projection optical system 34 including various lenses. That is, the video projected downward from the video projection unit 30 is displayed in a range where at least a part of the illumination light irradiation area by the lighting device 10 overlaps with the video. The details of the video projection unit 30 will be described later, but prior to this, hereinafter, between the video projection unit 30 and the illumination light source 20 described above, and further, between the diffusion plate 12, The positional relationship within the main body (shade) 11 of the illumination device 10 will be described.

The video projection unit 30 is not limited to the one shown in FIG. 2, and may be one using a transmissive video display element as shown in FIG. It can also be used in configurations.

FIG. 4 is a side view showing the internal configuration of the illumination device 10 according to the present embodiment. As is apparent from the figure, the bottom of the cylindrical main body (shade) 11 (the upper end in the figure) is mounted on the substrate 21 of the illumination light source 20 having a plurality of semiconductor light emitting elements (LEDs) 22. That is, it is arranged in a state of maintaining a sufficient distance from the diffusion plate 12 that diffuses the illumination light.

On the other hand, the video projection unit 30 is attached to the end portion of the substrate 21 via a substantially “L” -shaped holder 36, and the light emitting opening (that is, the projection lens surface) is formed by the holder 36. The height is set to be almost the same as the diffusion plate 12.

A through-hole (notch) 13 for allowing the projection light from the video projection unit 30 to pass through is formed in a part of the diffusion plate 12. The through hole (notch) 13 does not need to be a spatial hole, and may be a transmission opening window using a transmission material having a high transmittance as long as the projection light from the video projection unit 30 can pass therethrough. The same applies to the case where the through hole (notch) 13 is indicated in the following description. According to the above-described configuration, the size of the through-hole (notch) 13 may be adjusted to the size immediately after exiting from the device, so that the opening size can be reduced.

The video projection unit 30 can display a desired video by projecting video light on the display surface 61, as is apparent from FIGS. At that time, in the video projection unit 30, the optical axis of the projection optical system 34 is offset from the center of the video display element, so that the center of the projection video is perpendicular to the projection surface from the exit of the projection optical system 34. It is preferable that the display is offset in the direction of the center of the illumination area obtained by the illumination device 10 (for example, directly below the illumination device 10). In addition to offsetting the optical axis 34 from the center of the image display element, the projection optical system can be realized as a tilt optical system instead of being designed as a rotationally symmetric optical system).

According to the arrangement of the video projection unit 30, the illumination area by the illumination device 10 and the projection video area of the video projection unit 30 can be further superimposed. Since the user is more likely to arrange the table or desk 60 so as to be better illuminated by the lighting device 10, the larger the illumination area by the lighting device 10 and the projected video area of the video projection unit 30, the more the table. Alternatively, the desk 60 or the like is easy to use as the display surface 61 of the video projection unit 30, and there is an advantage that layout is easy. At this time, if the lighting device 10 is turned off, an image with higher contrast can be obtained.

That is, as apparent from FIGS. 1 and 2, the video projection unit 30 offsets the optical axis of the projection optical system and the center of the video display element or adopts a tilt optical system as the projection optical system. , Adopting a configuration in which the center of the projected image is projected by offsetting in the direction of the center of the illumination area (indicated by “x” in FIG. 1) from the position where the perpendicular is dropped from the exit of the projection optical system to the projection surface. Is desirable.

Further, FIG. 6 shows another embodiment of the present invention related to the positional relationship between the video projection unit 30, the illumination light source 20, and the diffusion plate 12 described above.

In the arrangement configuration (Modification 1) shown in FIG. 6A, the heights of the projection optical system opening (that is, the projection lens surface) of the video projection unit 30, the illumination light source 20, and the diffusion plate 12 are set as follows. Place them close together. According to this arrangement, the size of the through hole (notch) 13 for allowing the projection light from the video projection unit 30 to pass through can be made small as in the above embodiment, and further, the video The shadow of the projection unit 30 can be suitably suppressed.

Further, in the arrangement configuration (Modification 2) shown in FIG. 6B, the light emitting opening (that is, the projection lens surface) of the video projection unit 30 and the illumination light source 20 are arranged close to each other. And the height of the diffusion plate 12 are separated from each other. That is, the difference between the height of the light emission opening of the video projection unit 30 and the height of the illumination light source 20 is the difference between the height of the light emission opening of the video projection unit 30 and the height of the diffusion plate 12 or the height of the illumination light source 20. It is arranged so as to be smaller than the difference between the height and the height of the diffusion plate 12. For example, the height of the light emitting opening (that is, the projection lens surface) of the video projection unit 30 and the illumination light source 20 may be arranged at a substantially central position in the height direction inside the main body (shade) 11. According to this, compared with (Modification 1) shown in FIG. 6 (A), the size of the through-hole (notch) 13 can provide a better diffusion effect of illumination light by the diffusion plate 12. At the same time, the occurrence of shadows in the video projection unit 30 can be suitably suppressed.

Further, in the arrangement configuration (Modification 3) shown in FIG. 6C, the substrate 21 of the illumination light source 20 is attached close to the upper end portion of the cylindrical main body (shade) 11 and the image projection unit 30 is also provided. It is directly mounted on the substrate 21. According to such a configuration, it is possible to obtain a larger diffusion effect of illumination light from the illumination light source 20 by the diffusion plate 12 than (Modification 1) shown in FIG.

In the following, the positional relationship between the image display element (liquid crystal panel), which is the display unit 32 constituting the image projection unit 30, and the projection optical system 34, the projection image obtained thereby, and the illumination obtained by the illumination device 10 will be described. Will be described.

First, FIG. 7 illustrates a case where the image to be displayed is projected from the exit of the projection optical system 34 of the image projection unit 30 with the center of the image being offset in the direction opposite to the center of the illumination light.

In this case, as also shown in FIG. 7A, the optical axis (in the drawing) of the projection optical system 34 with respect to the center (indicated by a broken line in the drawing) of the video display element (liquid crystal panel) which is the display unit 32. (Shown by a broken line) is offset in the direction opposite to the center of the illumination light. As a result, as shown in FIG. 7B, the image projected from the image projection unit 30 onto the display surface is illuminated with reference to the position of the perpendicular line from the exit of the projection optical system to the projection surface. The display is offset in the direction opposite to the center of the light (see the broken line in the figure) (see the broken line in the figure).
In addition to the above-described configuration in which the optical axis of the projection optical system 34 that employs the center of the image display element and the rotationally symmetric optical system is offset, the above effect can be obtained by employing a tilt optical system for the projection optical system 34. Can also be realized.

Next, FIG. 8 illustrates a case where an image to be displayed is projected directly from the exit of the projection optical system 34 of the image projection unit 30 (that is, not offset).

In this case, as shown in FIG. 8A, the center of the video display element (liquid crystal panel) which is the display unit 32 (shown by a broken line in the figure) and the center of the projection optical system 34 (shown by a broken line in the figure). (Shown) matches. As a result, as shown in FIG. 8B, the video projected from the video projection unit 30 onto the display surface is projected directly from the exit of the video projection unit 30 with no offset.

Furthermore, FIG. 9 illustrates a case where the image to be displayed is projected from the exit of the projection optical system 34 of the image projection unit 30 with the center of the image being offset toward the center of the illumination light.

In this case, as also shown in FIG. 9A, the optical axis (in the drawing) of the projection optical system 34 with respect to the center (indicated by a broken line in the drawing) of the video display element (liquid crystal panel) which is the display unit 32. (Shown by a broken line in FIG. 4) is offset in the direction of the center of the illumination light. As a result, as shown in FIG. 9B, the image projected from the image projection unit 30 onto the display surface is displayed offset in the direction of the center of the illumination light (see the broken line in the figure). (See the broken line in the figure).

When the features of the configuration of FIG. 7, the configuration of FIG. 8, and the configuration of FIG. 9 are compared, in the configuration of FIG. Bigger than. Then, when the user installs the table or desk 60 so as to irradiate the table or desk 60 with illumination light, the table or desk 60 can be easily used as the display surface 61 for the projected image.

In the configuration of FIG. 7, the overlapping area of the projection image and the illumination range of the illumination light is smaller than the other configurations, so when one table or desk 60 shares the image projection surface and the illumination light irradiation surface. Requires a relatively large table or desk 60. However, it is possible to provide the user with a method of using the table or desk 60 as an area of the illumination light irradiation surface for eating or working and projecting an image on the image projection surface.

In addition, if the offset of the projection image is further increased compared to the configuration of FIG. 7 to reduce the overlap region of the illumination light irradiation region and the projection image region, the projection image is less affected by the illumination light. The use in the state where the projection and the illumination light are simultaneously performed can be performed more suitably than other configurations. The configuration of FIG. 8 is well balanced because it is between the features of both the configuration of FIG. 9 and the configuration of FIG.

In addition, the relationship between the arrangement of the video projection units and the video aspect will be described with reference to FIGS.

10A and 10B, the video projection unit 30 is arranged offset in the X direction in the figure, and the aspect of the display video P obtained by the projection is set in the Y direction (that is, the offset of the video projection unit). The direction perpendicular to the direction) is the longitudinal direction, while the X direction (that is, the offset direction of the video projection unit) is the short direction. 10A is a view of the lighting device 10 as viewed from below, and FIG. 10B is a view of the lighting device 10 as viewed from the side.

11 (A) and 11 (B), the video projection unit 30 is arranged offset in the X direction of the figure, and the aspect of the display video P obtained by the projection is the Y direction as the short direction, The case where the X direction is the longitudinal direction is shown. Note that FIG. 11A is a view of the illumination device 10 as viewed from below, and FIG. 11B is a view of the illumination device 10 as viewed from the side.

Compare the configuration of FIG. 10 with the configuration of FIG. Here, as shown in FIG. 5, the projection optical system 34 projects the optical image on the display surface 61 as a projected image using the image display element 32 as an object. Then, the image display element 32 and the projected image are symmetrical in the vertical and horizontal directions, but the relationship between the longitudinal direction and the short direction of the aspect is maintained. Then, as shown in FIG. 10 and FIG. 11, when the image projection unit 30 is arranged offset from the illumination light source arrangement region at a position away from the center position of the illumination light, as shown in FIG. In addition, the offset direction (X direction in the figure) of the arrangement of the video projection unit 30 is the short direction of the aspect of the projected picture, and the vertical direction (Y direction in the figure) is the longitudinal direction of the aspect of the projected picture. Is desirable.

By doing so, in the aspect ratio of the video display element 32 arranged in the video projection unit 30, the X direction can be the short direction and the Y direction can be the long direction. The size design of the various optical systems of the video projection unit 30 is affected by the longitudinal direction and the short direction of the aspect ratio of the video display element 32 having the same area. Therefore, as shown in FIG. In the aspect ratio, when the X direction is the short direction and the Y direction is the long direction, the thickness of the video projection unit 30 in the X direction can be reduced. In the layouts of FIGS. 10 and 11, it is obvious that the shadow of illumination light caused by the video projection unit 30 can be suppressed more by reducing the thickness of the video projection unit 30 in the X direction.

Therefore, when the video projection unit 30 is arranged offset in the X direction with respect to the center position of the illumination light, the aspect ratio of the projected video is set in the short direction in the X direction and in the long direction in the Y direction as shown in FIG. It is desirable to lay out in order because the generation of shadows of illumination light caused by the video projection unit 30 can be relatively suppressed.

As described above, with reference to FIGS. 7 to 11, various layouts have been described in the case where the video projection unit 30 is arranged offset from the illumination light source arrangement region at a position away from the center position of the illumination light. The layouts of FIGS. 7 to 9 and the layouts of FIGS. 10 and 11 may be combined.

However, the user prepares a table or desk 60 of a limited size, and the table or desk 60 is suitably illuminated by the lighting device 10, and the table or desk 60 is displayed on the display surface of the video projection unit 30. In the case of using as a combination of the most space-efficient layout, the relationship between the offset of the center of the illumination light and the arrangement of the video projection unit 30 and the projection optical system of the video projection unit 30 and the projected video is shown in FIG. The layout of FIG. 10 is preferably adopted for the relationship between the center of the illumination light, the offset direction of the arrangement of the video projection unit 30, and the short side direction and the long side direction in the aspect ratio of the projected video. With this layout, the user can efficiently irradiate the table or desk 60 with illumination light, perform space-efficient projection as an image display surface, and reduce the generation of illumination light shadow caused by the image projection unit 30. Can do.

Subsequently, as shown in FIG. 1, a holding tool 40 for holding the main body 11 of the lighting device 10 in a suspended state from the ceiling surface is fixed on the upper surface of the lighting device 10. However, the holder 40 will be described below with reference to the attached FIG.

That is, one end (lower end) of the holder 40 is fixed to the bottom surface (upper end surface) constituting the main body 11 of the lighting device 10, and the holder 40 is attached to the ceiling surface at the other end (upper end). A disk-shaped mounting tool 45 for fixing is provided, and is fixed firmly to the ceiling surface by, for example, screws 46 and screw holes 47.

Here, according to the examination by the inventor, in the lighting device 10 capable of projecting and displaying an image on the table or desk as well as irradiating the illumination light on the upper surface of the table or desk. It has been found that when the main body 11 of the lighting device 10 is shaken or rotated, a situation in which the function of the display device cannot be sufficiently achieved due to the shake of the projected image. Therefore, in the present invention, the above-described holder 40 is preferably formed of a rigid member such as a hollow metal tube such as aluminum. In this case, as shown in FIG. 6, power is supplied to the light source 20 composed of the semiconductor light emitting element (LED) and the video projection unit 30 inside the tube constituting the holder 40. By storing the power cord 48 for supplying, and also the cable for supplying the video signal, it is not necessary to squeeze the power cord or cable outside, and the illumination is excellent in design. It can be a device.

In addition, the lower end of the tubular body constituting the holder 40 is open to the internal space of the main body 11 of the lighting device 10, that is, the air inside the main body 11 of the lighting device 10 enters the tubular body of the holding device 40. According to the configuration so as to be able to flow in, the heat generated from the light source 20 and the image projection unit 30 housed inside the main body is guided to the tubular body by a so-called chimney effect, and is formed in a slit shape formed on the upper portion of the tubular body. It becomes possible to discharge | release outside through the opening part 49 of this (refer the white arrow in a figure). According to this, it becomes possible to contribute to more efficient cooling of the illuminating device 10.

Furthermore, although not shown here, as the tube constituting the holder 40, a plurality of slidable tubes (pipes) having different diameters are concentrically combined, and a fixing portion is provided in a part thereof. Therefore, it is also possible to use a tubular body whose overall length can be adjusted. According to this, since the height of the lighting device 10 suspended from the ceiling surface 50 can be freely adjusted, it is possible to realize a lighting device with further excellent usability.

Subsequently, FIG. 13 is a block diagram showing an example of a detailed circuit configuration inside the video projection unit 30 described above, that is, the projection type video display device 100.

Projection optical system 101 (reference numeral 34 in FIG. 2) is an optical system that projects an image onto display surface 61, and includes a lens and / or a mirror. The display element 102 (reference numeral 32 in FIG. 2) generates an image to be projected, and uses a transmissive liquid crystal panel, a reflective liquid crystal panel, a DMD (Digital Micromirror Device: registered trademark) panel, or the like. The display element driving unit 103 sends a drive signal corresponding to the video signal to the display element 102. The light source 105 (reference numeral 31 in FIG. 2) generates projection illumination light, 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 supplies power to the light source 105. The illumination optical system 104 condenses the illumination light generated by the light source 105, makes it more uniform, and irradiates the display element 102. The cooling unit 115 cools each part that is in a high temperature state, such as the light source 105, the power source 106, or the display element 102, using an air cooling method or a liquid cooling method as necessary.

The operation signal input unit 107 is an operation button on the apparatus body or a light receiving unit of a remote controller, and inputs an operation signal from the user. The video input unit 131 inputs video data by connecting an external video output device. The audio input unit 133 connects an external video output device and inputs audio data. The audio output unit 140 can perform audio output based on the audio data input to the audio 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 nonvolatile memory 108 stores data for various operations in the interactive function, display icons, calibration data to be described later, and other data used for the projector function. The memory 109 stores video data to be projected and control data for the apparatus. The control unit 110 controls the operation of each unit in the apparatus. Particularly, the interactive function is executed by controlling the sensor 150 and the interactive function unit 120.

The sensor 150 is a camera that captures a range that overlaps the video projection area on the display surface 61, and can detect reflected light from the operation article by detecting an infrared light component. In addition, by setting the cut wavelength of the optical filter of the sensor 150 to the visible light wavelength region (for example, setting in the middle of the red visible light region), some visible light components other than infrared light (that is, the display screen) It is also possible to photograph a projected image) together with an infrared light component.

The interactive function unit 120 is a part that performs an interactive operation such as writing a character or a figure in the video area when the user operates a light emitting pen or a finger. For this purpose, the infrared image acquired from the sensor 150 is analyzed to calculate the position of the light-emitting pen or finger (the position operated by the user), the operation icon is synthesized in the projected video, or based on the user's operation. It has a function of executing an application that can be operated with a light-emitting pen or a finger, such as an application that performs drawing processing or the like, or an application that operates an image input from an external video output device.

Here, the imaging range of the sensor 150 and the range of an 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 imaging range of the sensor 150 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 video input unit 131 connects an external video output device and inputs video data. The audio input unit 133 connects an external video output device and inputs audio data. For example, the communication unit 132 is connected to an external information processing apparatus and inputs / outputs various control signals.

In addition, this invention is not limited to the above-mentioned Example, Various modifications are included. 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 ... Video projection unit, 31 ... Light source, 32 ... Display part ( Image display element), 34... Projection optical system.

Claims

An illumination device that illuminates by diffusing illumination light from the light source through a diffuser plate attached to a part of the housing, with a light source disposed inside the housing,
An illumination device, wherein an image projection unit for projecting and displaying image light on a projection surface is disposed at a position farther than the position of the light source with respect to the center of the illumination light inside the housing.
The lighting device according to claim 1.
The video projection unit has an image in which the center of the projection video is offset in a direction toward an area irradiated with illumination light from the illumination device, rather than a position where the center of the projection video is perpendicular to the display surface from the projection opening of the video projection unit. Projecting the lighting device.
The lighting device according to claim 1.
The video projection unit displays the video so that the center of the projected video is directed toward the center of the area irradiated with the illumination light from the illumination device, rather than the position where the vertical line is lowered from the projection opening of the video projection unit to the display surface. Projection, lighting device.
The lighting device according to claim 1,
In the video projection unit, the center of the projected video is in a direction opposite to the center of the region irradiated with the illumination light from the illumination device, rather than the position where the center of the projected video is perpendicular to the display surface from the projection opening of the video projection unit. An illuminating device that projects images to face.
The lighting device according to claim 1.
The video projection unit projects the video so that the center of the projected video is at a position perpendicular to the display surface from the projection opening of the video projection unit.
The lighting device according to claim 1.
The lighting device is a hanging type lighting device that is attached to a ceiling surface that constitutes a space.
The lighting device according to claim 1.
The projection optical system of the video projection unit enlarges and projects the video display element included in the video projection unit, and the center of the video display element and the optical axis position of the projection optical system are arranged offset. Lighting device.
The lighting device according to claim 1.
The light source is an illumination device configured by arranging one or more semiconductor light emitting elements (LEDs) on a surface of a substrate.
The lighting device according to claim 1.
A lighting device, wherein a part of the diffusion plate is formed with a through hole or a transmission opening window for allowing the image light from the image projection unit to pass therethrough.
The lighting device according to claim 1 is provided.
The lighting device further includes a holder for attaching the casing of the lighting device to the ceiling, and the holder is formed of a rigid member.
The lighting device according to claim 10.
The holder formed of the rigid member is a lighting device having a cylindrical shape.
The lighting device according to claim 11,
A lighting device in which a slit-shaped opening is formed on an outer periphery of a cylindrical holder formed of the rigid member.
The lighting device according to claim 1.
The video projection unit is arranged in the casing to be offset in a predetermined direction with respect to the center of the illumination light, and the video projection unit has a short direction as the offset direction, An illuminating device installed so as to obtain a projection image having a longitudinal direction as a direction perpendicular to an offset direction.
The lighting device according to claim 1.
The video projection unit is disposed in the casing so as to be offset in a predetermined direction with respect to the center of the illumination light, and the video projection unit has the offset direction as a longitudinal direction, and the offset An illuminating device installed so as to obtain a projected image having a short direction in a direction perpendicular to the direction.
The lighting device according to claim 1.
An illumination device in which at least a part of a projection image overlaps an illumination area illuminated by the illumination light on the projection surface.
The lighting device according to claim 1.
The illumination state of the illumination light by the light source and the projection state of the projection image by the video projection unit are (1) both are OFF, (2) only illumination light is irradiated, and (3) only projection image is projected A lighting device that can be used by switching between them.