Projector and control system including the same

Abstract

An object is to provide a projector that enables easier interlocking control with a lighting fixture and a control system including the same. The projector (10a) is a projector that projects an image, and includes a signal input unit (signal terminal block (20)) to which a lighting control signal is input. The lighting control signal is output from a lighting controller (14) and is used to control a lighting fixture.

Description

Technical Field

[0001] The present invention relates to a projector and a control system including the same. Background Art

[0002] As an example of a projector that projects an image, a projector having an input unit and a projection control unit is disclosed in Patent Document 1. The input unit receives an infrared signal transmitted from a remote controller and outputs operation data indicating the operation of the remote controller. The projection control unit performs projection of an image based on the operation data input from the input unit.

[0003] Prior Art Documents

[0004] Patent Documents

[0005] Patent Document 1: Japanese Patent Application Laid-Open No. 2017-173574 Summary of the Invention

[0006] Problems to be Solved by the Invention

[0007] Incidentally, it is desired to construct a projector installed simultaneously with a lighting fixture using the same construction method as that of the lighting fixture. In addition, in order to use multiple projectors simultaneously or to use a projector in conjunction with surrounding lighting fixtures, it is desired to use the projector in the same way as a lighting fixture. There is room for further research in the control method of the projector in order to solve such problems in construction and operation.

[0008] For example, a projector as disclosed in Patent Document 1 may be used together with a lighting fixture or may be controlled in conjunction with a lighting fixture. Conventionally, when a projector is controlled in conjunction with a lighting fixture, it is necessary to install middleware or the like, and it is not easy to control the projector in conjunction with the lighting fixture. In addition, even if the projector and the lighting fixture can be controlled in conjunction with each other using a controller for controlling the projector, it is difficult for a user who only has knowledge of lighting fixtures to operate.

[0009] Therefore, an object of the present invention is to provide a projector and a control system including the same that enable easier interlocking control with a lighting fixture.

[0010] Means for Solving the Problems

[0011] In order to achieve the above object, a technical solution of a projector according to the present invention is a projector that projects an image, and includes a signal input unit to which a lighting control signal is input. The lighting control signal is output from a lighting controller and is used for controlling a lighting fixture.

[0012] Furthermore, in order to achieve the above-mentioned object, a technical solution of a control system according to the present invention includes: the above-mentioned projector; a lighting controller that inputs the above-mentioned lighting control signal to the above-mentioned projector; and a lighting fixture that is controlled by the above-mentioned lighting controller.

[0013] Effects of the Invention

[0014] According to the present invention, a projector that can be easily controlled in conjunction with a lighting fixture and a control system including the projector can be obtained. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a diagram showing a control system according to an embodiment.

[0016] Figure 2 Yes Figure 1 Diagram of the control system of the projector, Figure 2 (a) is a top view, Figure 2 (b) is a side view.

[0017] Figure 3 Yes Figure 2 The III-III line cross-sectional view, Figure 3 (a) indicates that before the first signal line is inserted, Figure 3 (b) shows the state after the first signal line is inserted.

[0018] Figure 4 Yes Figure 1 A diagram showing a control system in which a first signal line is connected to a projector and a lighting controller, and a second signal line is connected to the projector and other projectors.

[0019] Figure 5 Yes Figure 1 Block diagram of the functional structure of the control system.

[0020] Figure 6 Yes Figure 1 A flowchart of an example of the operation of the control unit of the projector in the control system.

[0021] Figure 7 is a diagram showing an example of a lighting control signal. Figure 7 (a) is a diagram showing an example of a PWM (Pulse Width Modulation) signal. Figure 7 (b) is a diagram showing an example of a PFM (Pulse Frequency Modulation) signal.

[0022] Figure 8 Yes Figure 1 FIG. 1 is a diagram showing an example of control of image projection performed by a control unit of a projector in a control system.

[0023] Description of Reference Numerals

[0024] 10a, 10b Projectors

[0025] 12a, 12b, 12c Lighting Fixtures

[0026] 14 Lighting Controller

[0027] 20 Signal Terminal Block

[0028] 30, 36 Positive and Side Terminals

[0029] 32, 38 Negative Terminals

[0030] 40 First Signal Line

[0031] 42 Second Signal Line

[0032] 62 Control Unit

[0033] 64 Storage Unit

[0034] 100 Control System Detailed Implementation Manner

[0035] The following specifically describes the implementation manner with reference to the accompanying drawings. In addition, the implementation manners described below all represent a preferred specific example of the present invention. Therefore, the numerical values, constituent elements, arrangement positions and connection forms of the constituent elements, steps, and the order of steps shown in the following implementation manners are examples and do not limit the meaning of the present invention.

[0036] In addition, each figure is a schematic diagram and is not necessarily drawn precisely. In addition, in each figure, the same reference numerals are given to substantially the same structures, and repeated descriptions are omitted or simplified.

[0037] In addition, in the following description, the X-axis, Y-axis, and Z-axis represent the three axes of a three-dimensional orthogonal coordinate system. The Z-axis direction is set as the vertical direction, and the direction perpendicular to the Z-axis (the direction parallel to the XY plane) is set as the horizontal direction. The X-axis and Y-axis are orthogonal to each other and both orthogonal to the Z-axis.

[0038] (Embodiment)

[0039] Hereinafter, the control system 100 related to the embodiment will be described.

[0040] Figure 1 is a diagram showing the control system 100 related to the embodiment. As Figure 1As shown, the control system 100 includes a plurality of (two in this embodiment) projectors 10a and 10b, a plurality of (three in this embodiment) lighting fixtures 12a, 12b, and 12c, and a lighting controller 14. The control system 100 controls the plurality of projectors 10a and 10b and the plurality of lighting fixtures 12a, 12b, and 12c using lighting control signals output from the lighting controller 14 and generally used to control the lighting fixtures. Each component is described below.

[0041] First, a plurality of projectors 10a and 10b will be described. Projectors 10a and 10b are projectors that project images, and are embedded type (in other words, downlight type) projectors embedded in the ceiling 2 of space 1. Projectors 10a and 10b are arranged adjacent to each other. Space 1 is, for example, a closed space such as a room. The images projected by projectors 10a and 10b are, for example, monochrome images (in other words, grayscale images) of natural objects such as the shadow of a tree (sunlight shining through the leaves). Such images are used, for example, for demonstrations in space 1. In addition, the images here include still images and moving images.

[0042] Figure 2 Yes Figure 1 FIG. 1 shows a control system 100 for a projector 10a. Figure 2 (a) is a top view, Figure 2 (b) is a side view. Figure 2 In (a), the ceiling 2 is omitted to avoid complicating the drawing. Figure 2 In (b), the ceiling 2 is represented by a cross section. Figure 2 As shown, the projector 10 a includes an outer casing 16 , a flange portion 18 , and a signal terminal block 20 .

[0043] The outer contour box body 16 is inserted through a through hole 3 that vertically penetrates the ceiling 2. The through hole 3 is circular when viewed from the vertical direction. The outer contour box body 16 is integrally formed with the protruding edge portion 18 and is fixed to the ceiling 2 by a metal part (not shown) or the like. The outer contour box body 16 protrudes vertically upward (positive side of the Z-axis direction) from the ceiling surface (lower surface) 4 of the ceiling 2 and is buried in the ceiling 2. The ceiling surface 4 of the ceiling 2 is a surface that extends in the horizontal direction. The outer contour box body 16 extends along the vertical direction and is substantially cylindrical. The outer contour box body 16 has an upper surface 22 and an outer side surface 24. The upper surface 22 is a surface parallel to the horizontal direction and is orthogonal to the vertical direction. The upper surface 22 is substantially circular when viewed from the vertical direction. The outer side surface 24 is a surface that extends along the vertical direction and intersects the horizontal direction. The outer side surface 24 extends vertically downward (negative side of the Z-axis direction) from the outer peripheral portion of the upper surface 22. The outer side surface 24 is substantially annular when viewed from the vertical direction. The outer contour box body 16 houses an image element 58 (described later) and the like inside. A detailed description of the image element 58 and the like will be given later.

[0044] The protruding edge portion 18 protrudes outward from the lower end portion of the outer contour box body 16 and is in the shape of a protruding edge. It is substantially annular when viewed from the vertical direction. The protruding edge portion 18 is fixed in contact with the ceiling surface 4 of the ceiling 2 from below.

[0045] The signal terminal block 20 is a part to which a lighting control signal is input and is a part for outputting the lighting control signal input to the signal terminal block 20 to the outside of the projector 10a. This lighting control signal is output from the lighting controller 14 and is used for controlling the lighting fixture. In this embodiment, the signal terminal block 20 corresponds to the signal input part and the signal output part.

[0046] The signal terminal block 20 has a positive side signal line insertion hole 29, a positive side terminal 30, a negative side signal line insertion hole 31, and a negative side terminal 32. The positive side signal line insertion hole 29, the positive side terminal 30, the negative side signal line insertion hole 31, and the negative side terminal 32 are used for inputting the lighting control signal output from the lighting controller 14 to the signal terminal block 20.

[0047] The positive side signal line insertion hole 29 opens in the horizontal direction (positive side of the Y-axis direction), and a signal line can be inserted from the horizontal direction (positive side of the Y-axis direction). Figure 3 is Figure 2 a sectional view taken along line III - III. As Figure 3 shown in (a) of Figure 3As shown in (b) of [Figure 0], the positive-side signal line 44 of the first signal line 40 has a conductive core wire 44a such as a copper wire and an insulating covering member 44b such as resin that covers the core wire 44a. If the positive-side signal line 44 is inserted into the positive-side signal line insertion hole 29, the positive-side terminal 30 presses the positive-side signal line 44 (core wire 44a), the positive-side terminal 30 and the positive-side signal line 44 are electrically connected, and the positive-side signal line 44 is fixed to the signal terminal block 20.

[0048] As Figure 2 shown, the negative-side signal line insertion hole 31 is arranged vertically below the positive-side signal line insertion hole 29. The negative-side signal line insertion hole 31 opens in the horizontal direction (positive side of the Y-axis direction), and a signal line can be inserted from the horizontal direction (positive side of the Y-axis direction). The negative-side terminal 32 is a quick-connect terminal that connects the first signal line 40 for inputting the lighting control signal output from the lighting controller 14, and is arranged in the negative-side signal line insertion hole 31. Since the negative-side terminal 32 has the same structure as the positive-side terminal 30, by referring to the description of the positive-side terminal 30 above, the detailed description of the negative-side terminal 32 is omitted. Since the negative-side signal line 46 (described later) of the first signal line 40 has the same structure as the positive-side signal line 44, the detailed description of the negative-side signal line 46 is omitted. If the negative-side signal line 46 is inserted into the negative-side signal line insertion hole 31, the negative-side terminal 32 presses the negative-side signal line 46 (core wire), the negative-side terminal 32 and the negative-side signal line 46 are electrically connected, and the negative-side signal line 46 is fixed to the signal terminal block 20.

[0049] In addition, the positive-side terminal 30 and the negative-side terminal 32 may not be quick-connect terminals. In this embodiment, the positive-side terminal 30 and the negative-side terminal 32 correspond to the first terminals.

[0050] Furthermore, the signal terminal block 20 also has a positive-side signal line insertion hole 35, a positive-side terminal 36, a negative-side signal line insertion hole 37, and a negative-side terminal 38. The positive-side signal line insertion hole 35, the positive-side terminal 36, the negative-side signal line insertion hole 37, and the negative-side terminal 38 are used to output the lighting control signal input to the signal terminal block 20 to the outside of the projector 10a. The positive-side terminal 36 and the negative-side terminal 38 are electrically connected to the positive-side terminal 30 and the negative-side terminal 32, and the lighting control signal input to the signal terminal block 20 is output to the outside via the positive-side terminal 36 and the negative-side terminal 38.

[0051] The positive-side signal line insertion hole 35 is arranged side by side with the positive-side signal line insertion hole 29 in the horizontal direction (X-axis direction). In addition, the positive-side signal line insertion hole 35 opens in the horizontal direction (positive side of the Y-axis direction), and the signal line can be inserted from the horizontal direction (positive side of the Y-axis direction). The positive-side terminal 36 is a quick-connect terminal that connects the second signal line 42 (described later) for outputting the lighting control signal input to the signal terminal block 20 to the outside of the projector 10a, and is arranged in the positive-side signal line insertion hole 35. Since the positive-side terminal 36 has the same structure as the positive-side terminal 30, the detailed description of the positive-side terminal 36 is omitted by referring to the above description of the positive-side terminal 30. Since the positive-side signal line 48 (described later) of the second signal line 42 has the same structure as the positive-side signal line 44 of the first signal line 40, the detailed description of the positive-side signal line 48 is omitted. If the positive-side signal line 48 is inserted into the positive-side signal line insertion hole 35, the positive-side terminal 36 presses the positive-side signal line 48 (core wire), the positive-side terminal 36 and the positive-side signal line 48 are electrically connected, and the positive-side signal line 48 is fixed to the signal terminal block 20.

[0052] The negative-side signal line insertion hole 37 is arranged side by side with the negative-side signal line insertion hole 31 in the horizontal direction (X-axis direction). In addition, the negative-side signal line insertion hole 37 is arranged below the positive-side signal line insertion hole 35 in the vertical direction. The negative-side signal line insertion hole 37 opens in the horizontal direction (positive side of the Y-axis direction), and the signal line can be inserted from the horizontal direction (positive side of the Y-axis direction). The negative-side terminal 38 is a quick-connect terminal that connects the second signal line 42 for outputting the lighting control signal input to the signal terminal block 20 to the outside of the projector 10a, and is arranged in the negative-side signal line insertion hole 37. Since the negative-side terminal 38 has the same structure as the positive-side terminal 30, the detailed description of the negative-side terminal 38 is omitted by referring to the above description of the positive-side terminal 30. Since the negative-side signal line 50 (described later) of the second signal line 42 has the same structure as the positive-side signal line 44 of the first signal line 40, the detailed description of the negative-side signal line 50 is omitted. If the negative-side signal line 50 is inserted into the negative-side signal line insertion hole 37, the negative-side terminal 38 presses the negative-side signal line 50 (core wire), the negative-side terminal 38 and the negative-side signal line 50 are electrically connected, and the negative-side signal line 50 is fixed to the signal terminal block 20.

[0053] In addition, the positive-side terminal 36 and the negative-side terminal 38 may not be quick-connect terminals. In this embodiment, the positive-side terminal 36 and the negative-side terminal 38 correspond to the second terminals.

[0054] As described above, the part (signal input part) for inputting the lighting control signal and the part (signal output part) for outputting the lighting control signal to the outside of the projector 10a have a structure for inserting the signal line and have the same structure as each other.

[0055] Since the projector 10b has the same structure as the projector 10a, the detailed description of the projector 10b is omitted by referring to the description of the projector 10a above.

[0056] Figure 4 It represents Figure 1 a diagram showing the state where a first signal line 40 is connected between the projector 10a and the lighting controller 14 in the control system 100, and a second signal line 42 is connected between the projector 10a and other projectors 10b. As Figure 4 shown, the first signal line 40 is connected between the projector 10a and the lighting controller 14. The first signal line 40 is a signal line for inputting the lighting control signal output from the lighting controller 14 to the projector 10a, and has a positive-side signal line 44 and a negative-side signal line 46. The positive-side signal line 44 electrically connected to the positive-side terminal of the lighting controller 14 is inserted into the positive-side signal line insertion hole 29 of the projector 10a and is electrically connected to the positive-side terminal 30 (refer to Figure 2 ). In addition, the negative-side signal line 46 electrically connected to the negative-side terminal of the lighting controller 14 is inserted into the negative-side signal line insertion hole 31 of the projector 10a and is electrically connected to the negative-side terminal 32 (refer to Figure 2 ). Thus, the lighting control signal output from the lighting controller 14 is input to the projector 10a.

[0057] In addition, the second signal line 42 is connected between the projector 10a and other projectors 10b. The second signal line 42 is a signal line for outputting the lighting control signal input to the signal terminal block 20 from the lighting controller 14 to the outside of the projector 10a, and has a positive-side signal line 48 and a negative-side signal line 50. The positive-side signal line 48 inserted into the positive-side signal line insertion hole 35 of the projector 10a and electrically connected to the positive-side terminal 36 (refer to Figure 2 ) is inserted into the positive-side signal line insertion hole 29 of the projector 10b and is electrically connected to the positive-side terminal 30 (refer to Figure 2 ). In addition, the negative-side signal line 50 inserted into the negative-side signal line insertion hole 37 of the projector 10a and electrically connected to the negative-side terminal 38 (refer to Figure 2 ) is inserted into the negative-side signal line insertion hole 31 of the projector 10b and is electrically connected to the negative-side terminal 32 (refer to Figure 2 ). Thus, the lighting control signal input to the projector 10a from the lighting controller 14 is output to the outside of the projector 10a and is input to other projectors 10b.

[0058] Next, a description will be given of the plurality of lighting fixtures 12a, 12b, 12c. As Figure 1As shown, the multiple lighting fixtures 12a, 12b, and 12c are lighting fixtures that illuminate the space 1 respectively, and are fixed to the ceiling 2 of the space 1. Specifically, the multiple lighting fixtures 12a, 12b, and 12c are recessed (in other words, downlight type) lighting fixtures that are recessed into the ceiling 2 of the space 1. The multiple lighting fixtures 12a, 12b, and 12c are arranged adjacent to each other. In addition, the specific form of the lighting fixtures 12a, 12b, and 12c is not particularly limited. For example, the lighting fixtures 12a, 12b, and 12c may also be ceiling lights, downlights, chandeliers, spotlights, wall lights, etc.

[0059] Next, the lighting controller 14 will be described. As Figure 1 shown, the lighting controller 14 is a controller for controlling the multiple projectors 10a, 10b and the multiple lighting fixtures 12a, 12b, 12c, and is provided on the wall of the space 1. In addition, the lighting controller 14 may not be provided on the wall of the space 1, but may be arranged at a place where the user can operate. The lighting controller 14 has a touch panel (not shown) or hardware buttons (not shown), etc., and accepts the user's operation through the touch panel or hardware buttons, etc. The lighting controller 14 outputs a lighting control signal corresponding to the user's operation.

[0060] Figure 5 is a block diagram showing Figure 1 the functional structure of the control system 100. Refer to Figure 5 to describe the functional structure of the control system 100.

[0061] As Figure 5 shown, the projector 10a also has a power supply unit 52, a light source drive unit 54, a light source 56, an image element 58, a projection lens 60, a control unit 62, and a storage unit 64. The power supply unit 52, the light source drive unit 54, the light source 56, the image element 58, the projection lens 60, the control unit 62, and the storage unit 64 are housed inside the outer contour box 16.

[0062] The power supply unit 52 is a power conversion circuit that converts the AC power supplied from the AC power supply outside the projector 10a into DC power.

[0063] The light source drive unit 54 is a circuit for adjusting the brightness of the light source 56 using the power supplied from the power supply unit 52. The light source drive unit 54 operates based on the control signal output from the control unit 62.

[0064] The light source 56 is a light source that emits white light. Specifically, the light source 56 is implemented by a light emitting diode (LED), but may also be implemented by a semiconductor laser, organic EL (electroluminescence), inorganic EL, etc.

[0065] The image element 58 emits an image by modulating the light emitted from the light source 56. Specifically, the image element 58 is a light-transmissive image element such as a transmissive liquid crystal panel, but may also be a reflective image element such as a micro mirror array or a reflective liquid crystal panel.

[0066] The projection lens 60 is an optical element that projects the image emitted from the image element 58 onto a projection surface such as the ground.

[0067] The control unit 62 is a control device that controls the light source 56 (more specifically, the light source drive unit 54) and the image element 58. For example, the control unit 62 controls the light source 56 (more specifically, the light source drive unit 54) and the image element 58 based on the lighting control signal input to the signal terminal block 20, and controls the projection of the image. Specifically, as the control of the projection of the image, the control unit 62 performs at least one of selection of the projected image, turning on and off of the projection, change of the brightness of the projected image, change of the contrast of the projected image, change of the color temperature of the projected image, change of the zoom ratio of the projected image, change of the focus position of the projected image, and scheduling operation. The lighting control signal described here is a signal generally used for controlling lighting fixtures. For example, the lighting control signal is a signal standardized for controlling lighting fixtures, such as a dimming signal used for dimming lighting fixtures or a color mixing signal used for color mixing of lighting fixtures. Specifically, the lighting control signal is a PWM signal or a PFM signal used for dimming lighting fixtures, etc. In addition, the lighting fixture mentioned here, for example, like the lighting fixture 12a (12b, 12c), is a lighting fixture that does not have an image element, is fixed to the ceiling, etc., and is used to illuminate the interior. In the control system 100, by inputting one lighting control signal output from the lighting controller 14 to the projector 10a and inputting other lighting control signals output from the lighting controller 14 to the lighting fixtures 12a (12b, 12c), the projector 10a and the lighting fixtures 12a (12b, 12c) can be interlocked. The control unit 62 controls not only the light source 56 but also the image element 58 based on the lighting control signal as described above, and controls the projection of the image. In addition, the dimming described here includes turning on and off the light source. In addition, the dimming described here also includes changing the brightness of the light source in the state where the light source is lit. The control unit 62 operates by the power supplied from the power supply unit 52. Specifically, the control unit 62 is implemented by a microcomputer, but may also be implemented by a processor or a dedicated circuit.

[0068] In the storage unit 64, image information of each of a plurality of types of images (in other words, a plurality of contents) projected by the projector 10a is stored. In addition, in the storage unit 64, a control program of the projector 10a executed by the control unit 62 and the like are also stored. Specifically, the storage unit 64 is implemented by a semiconductor memory or the like.

[0069] Since the projector 10b has the same structure as the projector 10a, the detailed description of the projector 10b is omitted by referring to the description of the projector 10a above. As described above, the signal terminal block 20 of the projector 10b and the signal terminal block 20 of the projector 10a are electrically connected via the second signal line 42, and the lighting control signal input to the projector 10a is input to the projector 10b via the second signal line 42.

[0070] The lighting controller 14 is electrically connected to the signal terminal block 20 of the projector 10a and the plurality of lighting fixtures 12a, 12b, 12c. The lighting controller 14 outputs a lighting control signal corresponding to the user's operation, and this lighting control signal is input to the projector 10a and the plurality of lighting fixtures 12a, 12b, 12c. For example, when the user uses the lighting controller 14 to perform a dimming operation on the plurality of lighting fixtures 12a, 12b, 12c, the lighting controller 14 outputs a lighting control signal (dimming signal) corresponding to this dimming operation, and this lighting control signal is input to the projector 10a and the plurality of lighting fixtures 12a, 12b, 12c. In addition, for example, when the user uses the lighting controller 14 to perform a color adjustment operation on the plurality of lighting fixtures 12a, 12b, 12c, the lighting controller 14 outputs a lighting control signal (color adjustment signal) corresponding to this color adjustment operation, and this lighting control signal is input to the projector 10a and the plurality of lighting fixtures 12a, 12b, 12c.

[0071] The lighting fixture 12a includes a light source 66 and a control unit 68. In addition, the lighting fixture 12a does not have an imaging element that functions like the imaging element 58 of the projector 10a.

[0072] The light source 66 is a light source that emits white light. Specifically, the light source 66 is implemented by a light-emitting diode (LED), but it can also be implemented by a semiconductor laser, organic EL, inorganic EL, or the like.

[0073] The control unit 68 controls the light source 66 based on the lighting control signal output from the lighting controller 14. Specifically, the control unit 68 is implemented by a microcomputer, but it can also be implemented by a processor or a dedicated circuit.

[0074] Since the lighting fixtures 12b and 12c have the same structure as the lighting fixture 12a, the detailed descriptions of the lighting fixtures 12b and 12c are omitted by referring to the description of the lighting fixture 12a above.

[0075] Next, the operation of the control system 100 configured as described above will be described. Figure 6 It represents Figure 1 An example of the operation of the control unit 62 of the projector 10a of the control system 100.Figure 7 This is a diagram showing an example of an illumination control signal. Figure 7 (a) of this is a diagram showing an example of a PWM signal. Figure 7 (b) of this is a diagram showing an example of a PFM signal. Figure 8 This is a diagram showing an example of the control of the projection of an image performed by the control unit 62. Refer to Figures 6 to 8 this, and an example of the operation of the control unit 62 of the projector 10a will be described.

[0076] As Figure 6 shown, by operating the illumination controller 14 by the user, the illumination control signal from the illumination controller 14 is input into the projector 10a (signal terminal block 20), and the control unit 62 acquires this illumination control signal ( Figure 6 S1 in this).

[0077] Based on the acquired illumination control signal, the control unit 62 performs the control of the projection of an image ( Figure 6 S2 in this). For example, a case where the illumination control signal is a dimming signal that is usually used for dimming of a lighting fixture and this dimming signal is a PWM signal will be described. As Figure 7 shown in (a) of this, the PWM signal has a constant period during which the voltage is turned on (refer to Figure 7 T in (a) of this), and the time during which the voltage is turned on is not constant (refer to Figure 7 τ1 and τ2 in (a) of this). The duty ratio of the PWM signal is calculated by (time during which the voltage is turned on) / (period during which the voltage is turned on). The frequency of the PWM signal is, for example, 1 kHz, and the value of the voltage of the PWM signal is, for example, 12V. When the dimming signal is a PWM signal, the control unit 62, for example, based on the duty ratio of the PWM signal, performs Figure 8 the control of the projection of an image as shown in this.

[0078] Specifically, the control unit 62 turns the projection on and off based on the duty ratio of the PWM signal. For example, when in a state where there is no projected image on the projection surface (a state where the projection is turned off), if the duty ratio of the acquired PWM signal is larger than a specified value, the control unit 62 turns on the projection of the image and projects the image onto the projection surface. In addition, when in a state where an image is projected on the projection surface (a state where the projection is turned on), if the duty ratio of the acquired PWM signal is smaller than a specified value, the control unit 62 turns off the projection of the image and does not project the image onto the projection surface.

[0079] In addition, the control unit 62 selects the image to be projected based on the duty ratio of the PWM signal. For example, the duty ratio of the PWM signal is associated with the image information stored in the storage unit 64, and the control unit 62 selects the image information corresponding to the acquired duty ratio of the PWM signal to select the image to be projected onto the projection surface.

[0080] In addition, the control unit 62 changes the brightness of the projected image based on the duty ratio of the PWM signal. For example, the larger the duty ratio of the PWM signal obtained by the control unit 62, the brighter the image projected on the projection surface, and the smaller the duty ratio of the PWM signal obtained, the darker the image projected on the projection surface.

[0081] In addition, the control unit 62 changes the contrast of the projected image based on the duty ratio of the PWM signal. For example, the larger the duty ratio of the PWM signal obtained by the control unit 62, the higher the contrast of the image projected on the projection surface, and the smaller the duty ratio of the PWM signal obtained, the lower the contrast of the image projected on the projection surface.

[0082] In addition, the control unit 62 changes the color temperature of the projected image based on the duty ratio of the PWM signal. For example, the larger the duty ratio of the PWM signal obtained by the control unit 62, the higher the color temperature of the image projected on the projection surface, and the smaller the duty ratio of the PWM signal obtained, the lower the color temperature of the image projected on the projection surface.

[0083] In addition, the control unit 62 changes the zoom ratio of the projected image based on the duty ratio of the PWM signal. For example, the larger the duty ratio of the PWM signal obtained by the control unit 62, the larger the zoom ratio of the image projected on the projection surface, and the smaller the duty ratio of the PWM signal obtained, the smaller the zoom ratio of the image projected on the projection surface. Additionally, if the zoom ratio is increased, the image projected on the projection surface is enlarged, and if the zoom ratio is decreased, the image projected on the projection surface is reduced.

[0084] In addition, the control unit 62 changes the focus position of the projected image based on the duty ratio of the PWM signal. For example, the larger the duty ratio of the PWM signal obtained by the control unit 62, the more the focus position is changed toward the far - distance side, and the smaller the duty ratio of the PWM signal obtained, the more the focus position is changed toward the near - distance side. For example, when the focus of the image projected on the projection surface is not in focus, by changing the focus position of the projected image, the focus of the image projected on the projection surface can be brought into focus.

[0085] In addition, the control unit 62 performs scheduling operation based on the duty ratio of the PWM signal. For example, as a scheduling operation, the control unit 62 projects images in a manner that changes according to time onto the projection surface. In addition, for example, as a scheduling operation, the control unit 62 projects images in a manner that changes according to the day of the week onto the projection surface. In addition, for example, as a scheduling operation, the control unit 62 projects images in a manner that changes according to the season onto the projection surface. In this case, data for performing each scheduling operation is stored in the storage unit 64, and each data is associated with the duty ratio of the PWM signal. And the control unit 62 selects the data corresponding to the duty ratio of the obtained PWM signal and uses this data to perform the scheduling operation. For example, if the data contains a plurality of image information, etc., the control unit 62 projects the plurality of images onto the projection surface in sequence based on the plurality of image information according to time, etc.

[0086] As described above, the control unit 62 uses the dimming signal that is usually used for dimming of lighting fixtures to not only perform dimming of the projector 10a but also perform control other than dimming of the projector 10a.

[0087] Above, the case where the dimming signal is a PWM signal has been described. However, for example, the dimming signal can also be a pulse signal such as a PFM signal. As Figure 7 shown in (b) of, the PFM signal is a signal in which the period during which the voltage is turned on is not constant (refer to T1 and T2 in (b) of Figure 7 ), and the time during which the voltage is turned on is constant (refer to τ in (b) of Figure 7 ). When the dimming signal is a PFM signal, the control unit 62 can, for example, also perform control of projecting the image as described above based on the value calculated by (time during which the voltage is turned on) / (period during which the voltage is turned on).

[0088] In addition, the lighting control signal may also be a color adjustment signal that is typically used for color adjustment of lighting fixtures. For example, when the color adjustment signal is a PWM signal, the control unit 62 may also control the projection of the image as described above based on the duty ratio of the PWM signal. In addition, for example, the control unit 62 may also control the projection of the image as described above according to the color temperature represented by the color adjustment signal. Specifically, the control unit 62 may turn on the projection of the image if the color temperature represented by the acquired color adjustment signal is higher than a specified color temperature, and turn off the projection of the image if the color temperature represented by the acquired color adjustment signal is lower than the specified color temperature. In addition, the color temperature represented by the color adjustment signal may be associated with the image information, and the control unit 62 may select an image according to the color temperature represented by the acquired color adjustment signal. In addition, the higher the color temperature represented by the acquired color adjustment signal, the brighter the brightness, higher the contrast, higher the color temperature, or larger the zoom ratio of the image projected on the projection surface by the control unit 62. In addition, the lower the color temperature represented by the acquired color adjustment signal, the darker the brightness, lower the contrast, lower the color temperature, or smaller the zoom ratio of the image projected on the projection surface by the control unit 62. In addition, the higher the color temperature represented by the acquired color adjustment signal, the more the focus position is changed to the far side, and the lower the color temperature represented by the acquired color adjustment signal, the more the focus position is changed to the near side. In addition, the control unit 62 may also perform the scheduling operation as described above according to the color temperature represented by the acquired color adjustment signal.

[0089] As described above, the control unit 62 uses a color adjustment signal that is typically used for color adjustment of lighting fixtures to not only perform color adjustment of the projector 10a, but also perform control other than color adjustment of the projector 10a.

[0090] In addition, the lighting control signal may also be a signal based on a communication standard such as DALI (Digital Addressable Lighting Interface) or DMX (Digital Multiplex).

[0091] The projector 10b performs the same operation as the projector 10a based on, for example, the lighting control signal from the projector 10a.

[0092] The projector 10a as described above is a projector that projects an image, and includes a signal input unit (signal terminal block 20) to which a lighting control signal is input. The lighting control signal is output from the lighting controller 14 and is used for controlling lighting fixtures.

[0093] This allows the lighting control signal output from the lighting controller 14 and used to control the lighting fixtures to be input to the projector 10a. This allows the projector 10a and the lighting fixtures 12a, 12b, and 12c to be easily controlled in conjunction with each other using the lighting control signal.

[0094] Furthermore, the projector 10 a as described above further includes a control unit 62 that controls image projection based on an illumination control signal input to the signal input unit (signal terminal block 20 ).

[0095] Thus, the control unit 62 can control image projection based on the lighting control signal input to the signal terminal block 20 , and thus can more easily control the projector 10 a and the lighting fixtures 12 a , 12 b , and 12 c in conjunction with each other using the lighting control signal.

[0096] In addition, in the projector 10a as described above, the control unit 62 controls the projection of the image and performs at least one of the following operations: selecting the projected image, turning the projection on and off, changing the brightness of the projected image, changing the contrast of the projected image, changing the color temperature of the projected image, changing the zoom factor of the projected image, changing the focus position of the projected image, and scheduling operations.

[0097] Thus, for example, the projection of the image by the projector 10a can be turned on and off in accordance with the on and off of the lighting fixtures 12a, 12b, and 12c. This makes it possible to easily control the projection of the image by the projector 10a in accordance with the operation of the lighting fixtures 12a, 12b, and 12c, and to more easily perform interlocking control with the lighting fixtures 12a, 12b, and 12c.

[0098] Furthermore, the projector 10 a as described above further includes a storage unit 64 for storing image information of a projected image.

[0099] Thus, since the image information of the projected image is stored in the storage unit 64 , selection of the image to be projected and the like can be easily performed, and interlocking control with the lighting fixtures 12 a , 12 b , and 12 c can be more easily performed.

[0100] In the projector 10 a described above, the lighting control signal is a dimming signal used for dimming the lighting fixture or a color adjustment signal used for adjusting the color of the lighting fixture.

[0101] Thus, image projection by the projector 10a can be controlled based on a dimming signal used for dimming the lighting fixture or a color adjustment signal used for color adjustment of the lighting fixture, so the projector 10a and the lighting fixtures 12a, 12b, and 12c can be easily controlled in conjunction.

[0102] In the projector 10 a as described above, the illumination control signal is a dimming signal, and the dimming signal is a PWM signal.

[0103] Thus, the projection of an image by the projector 10 a can be controlled based on the PWM signal used for controlling the lighting fixture, and thus the projector 10 a and the lighting fixtures 12 a , 12 b , and 12 c can be easily controlled in conjunction with each other.

[0104] Furthermore, in the projector 10 a as described above, the control unit 62 controls the projection of an image based on the duty ratio of the PWM signal.

[0105] Thus, image projection by the projector 10a can be controlled based on the duty ratio of the PWM signal also used for controlling the lighting fixtures. Therefore, the projector 10a and the lighting fixtures 12a, 12b, and 12c can be easily controlled in conjunction with each other.

[0106] Furthermore, in the projector 10 a described above, the signal input section (signal terminal block 20 ) includes the positive terminal 30 and the negative terminal 32 to which the first signal line 40 for inputting the lighting control signal from the lighting controller 14 is connected.

[0107] This allows the first signal line 40 for inputting the lighting control signal from the lighting controller 14 to be connected to the projector 10 a , and the lighting control signal from the lighting controller 14 can be easily input to the projector 10 a .

[0108] Furthermore, the projector 10 a as described above further includes a signal output unit (signal terminal block 20 ) for outputting the illumination control signal input to the signal input unit (signal terminal block 20 ) to the outside of the projector 10 a .

[0109] This allows the lighting control signal input to the projector 10a to be transmitted to the other projector 10b, thereby making it possible to easily control the other projector 10b and the lighting fixtures 12a, 12b, and 12c in conjunction with each other.

[0110] In addition, in the projector 10 as described above, the signal output unit (signal terminal block 20) has a positive side terminal 36 and a negative side terminal 38 connected to the second signal line 42 for outputting the lighting control signal input into the signal input unit (signal terminal block 20) to the outside of the projector 10a.

[0111] Thus, the second signal line 42 for outputting the lighting control signal input into the signal input section (signal terminal block 20) to the outside can be connected to the projector 10a, and the lighting control signal input into the signal input section (signal terminal block 20) can be easily output to the outside.

[0112] In addition, a control system 100 as described above includes the projector 10a, the lighting controller 14 that inputs a lighting control signal to the projector 10a, and the lighting fixtures 12a, 12b, 12c controlled by the lighting controller 14.

[0113] Thereby, the projector 10a and the lighting fixtures 12a, 12b, 12c can be easily controlled in conjunction with each other using the lighting controller 14.

[0114] (Other embodiments, etc.)

[0115] As described above, the projector and the like according to the present invention have been described based on the embodiments, but the present invention is not limited to these embodiments.

[0116] In the above-described embodiment, the case where the control system 100 includes two projectors 10a, 10b and three lighting fixtures 12a, 12b, 12c has been described, but it is not limited thereto. For example, the control system may include one projector, or may include three or more projectors. In addition, the control system may include one or two lighting fixtures, or may include four or more lighting fixtures.

[0117] In the above-described embodiment, the case where the projectors 10a, 10b are recessed projectors has been described, but it is not limited thereto. For example, the projector may be a projector used by being placed on a table or the like.

[0118] In the above-described embodiment, the case where the signal terminal block 20 is disposed on the outer side surface 24 of the outer contour box 16 has been described, but it is not limited thereto. For example, the signal terminal block may be disposed on the upper surface 22 of the outer contour box 16.

[0119] In the above-described embodiment, the case where the first signal line 40 is connected to the signal input unit (signal terminal block 20) has been described, but it is not limited thereto. For example, the first signal line may not be connected to the signal input unit, and the lighting control signal may be input to the signal input unit wirelessly.

[0120] In the above-described embodiment, the case where the second signal line 42 is connected to the signal output unit (signal terminal block 20) has been described, but it is not limited thereto. For example, the second signal line may not be connected to the signal output unit, and the lighting control signal may be output from the signal output unit to the outside wirelessly.

[0121] In addition to the above, forms obtained by various modifications conceived by those skilled in the art for the above-described embodiments, or forms realized by arbitrarily combining the constituent elements and functions of the embodiments without departing from the gist of the present invention are also included in the present invention.

Claims

1. A projector that projects an image, characterized in that: It comprises: A signal input unit to which a lighting control signal is input, the lighting control signal being output from a lighting controller and used for the control of a lighting fixture; and A control unit that, if the above-mentioned lighting control signal is input into the above-mentioned signal input unit, during the projection of the above-mentioned image, executes a second control different from the first control indicated by the above-mentioned lighting control signal instead of the first control. The first control is for the control of the above-mentioned lighting fixture, and the second control is for the control of the above-mentioned projector. The above-mentioned lighting control signal is a PWM, i.e., a pulse width modulation signal. The above-mentioned control unit executes the above-mentioned second control instead of the first control by reading the duty cycle of the above-mentioned PWM signal and replacing it with the parameters of the above-mentioned second control. The above-mentioned second control includes at least one of the selection of the image to be projected based on the above-mentioned duty cycle and the scheduling operation based on the above-mentioned duty cycle.

2. The projector according to claim 1, characterized in that: As the above-mentioned second control, the above-mentioned control unit performs at least one of the opening and closing of projection, the change of the brightness of the image to be projected, the change of the contrast of the image to be projected, the change of the color temperature of the image to be projected, the change of the zoom ratio of the image to be projected, and the change of the focus position of the image to be projected.

3. The projector according to claim 2, characterized in that: It further comprises a storage unit for storing the image information of the image to be projected.

4. The projector according to any one of claims 1 to 3, characterized in that: The above-mentioned lighting control signal is a dimming signal used for the dimming of the above-mentioned lighting fixture or a color mixing signal used for the color mixing of the above-mentioned lighting fixture.

5. The projector according to claim 4, characterized in that: The above-mentioned lighting control signal is the above-mentioned dimming signal.

6. The projector according to any one of claims 1 to 3, characterized in that: The above-mentioned signal input unit has a first terminal connected to a first signal line for inputting the above-mentioned lighting control signal from the above-mentioned lighting controller.

7. The projector according to any one of claims 1 to 3, characterized in that: It further comprises a signal output unit for outputting the above-mentioned lighting control signal input into the above-mentioned signal input unit to the outside of the above-mentioned projector.

8. The projector according to claim 7, characterized in that: The above-mentioned signal output unit has a second terminal connected to a second signal line for outputting the above-mentioned lighting control signal input into the above-mentioned signal input unit to the outside of the above-mentioned projector.

9. A control system, characterized in that: It comprises: The projector according to any one of claims 1 to 3; A lighting controller for inputting the above-mentioned lighting control signal to the above-mentioned projector; and A lighting fixture controlled by the above-mentioned lighting controller.

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