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WO2015045154A1 - Appareil d'éclairage, appareil d'affichage, et procédé de commande - Google Patents

Appareil d'éclairage, appareil d'affichage, et procédé de commande Download PDF

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Publication number
WO2015045154A1
WO2015045154A1 PCT/JP2013/076542 JP2013076542W WO2015045154A1 WO 2015045154 A1 WO2015045154 A1 WO 2015045154A1 JP 2013076542 W JP2013076542 W JP 2013076542W WO 2015045154 A1 WO2015045154 A1 WO 2015045154A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
display
guide plate
light guide
wall surface
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2013/076542
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English (en)
Japanese (ja)
Inventor
貴久 開發
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Toshiba Lifestyle Products and Services Corp
Original Assignee
Toshiba Corp
Toshiba Lifestyle Products and Services Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Toshiba Lifestyle Products and Services Corp filed Critical Toshiba Corp
Priority to PCT/JP2013/076542 priority Critical patent/WO2015045154A1/fr
Publication of WO2015045154A1 publication Critical patent/WO2015045154A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/04—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions
    • G09G3/06—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions using controlled light sources
    • G09G3/12—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions using controlled light sources using electroluminescent elements
    • G09G3/14—Semiconductor devices, e.g. diodes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S2/00—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/002—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces
    • G02B6/0021—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces for housing at least a part of the light source, e.g. by forming holes or recesses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
    • G02B6/0068—Arrangements of plural sources, e.g. multi-colour light sources
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0232—Special driving of display border areas
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00—Aspects of the architecture of display systems
    • G09G2360/16—Calculation or use of calculated indices related to luminance levels in display data

Definitions

  • Embodiments described herein relate generally to a lighting device, a display device, and a method for controlling the lighting device.
  • lighting device that has a large number of light sources arranged at the edge of the display and illuminates the wall surface around the display. This type of lighting device is also called an ambient lighting device.
  • the brightness of the light emitted around the display is uneven.
  • light of each color is not sufficiently mixed and color unevenness occurs unless a sufficient distance can be secured between the light source and an illumination target such as a wall surface.
  • the conventional ambient lighting apparatus has uneven luminance and uneven color, and cannot illuminate the periphery of the display with smooth light.
  • the problem to be solved by the present invention is to provide an illuminating device, a display device, and a method for controlling the illuminating device capable of illuminating the periphery of the display with uniform light.
  • a lighting device includes a light guide plate and a plurality of light sources.
  • the light guide plate has a hole portion whose inner wall surface functions as a light collecting surface for collecting light, guides the light collected from the inner wall surface, and radiates it from the outer peripheral edge.
  • the plurality of light sources are arranged along the inner wall surface of the hole portion and irradiate the inner wall surface with light.
  • the disassembled perspective view which shows schematic structure of the ambient illuminating device in one Embodiment.
  • the block diagram which shows the control structure of the ambient illuminating device in one Embodiment.
  • the flowchart of the process which a controller performs in one Embodiment. The figure explaining the modification of an ambient illuminating device.
  • FIG. 1 is an exploded perspective view schematically showing the configuration of the ambient lighting apparatus 1.
  • the ambient illumination device 1 includes a light guide plate 2, a light source unit 3, and reflection sheets 4 and 5 as reflection members.
  • the light guide plate 2 has a rectangular flat plate shape including a front surface 21 and a rear surface 22 intersecting with the thickness direction, and an upper edge surface 23, a lower edge surface 24, a left edge surface 25, and a right edge surface 26 parallel to the thickness direction. Make it.
  • FIG. 2 is a diagram schematically showing a II-II section of the light guide plate 2 in FIG.
  • the light guide plate 2 has a light source hole 20 penetrating from the front surface 21 to the rear surface 22.
  • the light source hole 20 is a perfect circle.
  • the light source unit 3 includes a substrate 30 and a plurality of light sources S mounted on the substrate 30.
  • the light source S includes a red LED (Light Emitting Diode) issued in red (R), a green LED emitting in green (G), and a blue LED emitting in blue (B).
  • R Red
  • G green
  • B blue LED emitting in blue
  • Each light source S is mounted on the substrate 30 such that the light emitting surface of each LED is along a perfect circle having the same diameter as the light source hole 20.
  • a so-called side view type LED in which the mounting surface and the light emission direction are parallel as the LED constituting the light source S, mounting on the substrate 30 is facilitated.
  • other types of light emitting elements such as LEDs of a type in which the mounting surface and the light emitting direction are perpendicular can be used by devising mounting on the substrate 30.
  • the light source unit 3 is attached to the light guide plate 2 by, for example, attaching the substrate 30 to the rear surface 22 with an adhesive in a state where each light source S is inserted into the light source hole 20.
  • the light emitting surfaces of the LEDs of each light source S are arranged along the inner wall surface 20a.
  • each light source S is arrange
  • a gap may be provided between the light emitting surface of the LED of each light source S and the inner wall surface 20a.
  • the reflection sheet 4 is formed in the same shape as the front surface 21 of the light guide plate 2.
  • the reflection sheet 4 is attached to the front surface 21 through, for example, a transparent adhesive.
  • the reflection sheet 4 reflects light reaching the front surface 21 from the inside of the light guide plate 2 to the inside of the light guide plate 2.
  • the reflection sheet 5 is formed in the same shape as the rear surface 22 of the light guide plate 2.
  • the reflection sheet 5 is attached to the rear surface 22 via, for example, a transparent adhesive.
  • the reflection sheet 5 reflects light reaching the rear surface 22 from the inside of the light guide plate 2 to the inside of the light guide plate 2.
  • FIG. 3 is a view for explaining the light guide by the light guide plate 2.
  • Light emitted from each light source S of the light source unit 3 is taken into the light guide plate 2 from the inner wall surface 20a. That is, the inner wall surface 20a functions as a lighting surface that collects light from each light source S.
  • the light from each light source S propagates toward the end portion in a concentric manner as indicated by a broken-line circle while being totally reflected.
  • the red, green, and blue light from one light source S is mixed before reaching the end of the light guide plate 2.
  • the light from each light source S is mixed before reaching the end of the light guide plate 2.
  • the ambient lighting device 1 is attached to the display 100 by pasting the back surface of the display 100 and the reflection sheet 4 via a double-sided tape 110, for example.
  • adjustment is performed so that the display screen 101 provided on the front surface of the display 100 and the light guide plate 2 are parallel to each other.
  • the light guide plate 2 and the display 100 have substantially the same size.
  • the display 100 for example, various types of displays such as a placement-type television device, a wall-mounted television device, or a signage device that displays various commercial information can be used.
  • a bezelless display as the display 100, the visual effect of the ambient lighting device 1 can be enhanced.
  • the ambient lighting device 1 and the display 100 constitute a display device according to the present embodiment.
  • FIG. 5 is a block diagram showing a configuration relating to control of the ambient lighting device 1.
  • the ambient lighting device 1 includes a controller 6, a light source driver 7, and connection terminals 8 and 9.
  • the connection terminal 8 connects the playback device 200 and the ambient lighting device 1 via the connection cable 300.
  • the playback device 200 is a media drive that reads video data and audio data of content from an optical disc medium that conforms to a standard such as Blu-ray (registered trademark) or DVD, a hard disk drive that stores video data and audio data of content, or Both of these are provided.
  • the content is, for example, a commercial video for a movie or digital signage.
  • the playback device 200 reads content video data and audio data from a media drive or a hard disk drive, and outputs them to the ambient lighting device 1 via the connection cable 300 and the connection terminal 8.
  • the video data and audio data output from the playback device 200 to the ambient lighting device 1 are not limited to data read from an optical disk medium or a hard disk drive.
  • these data may be TV program data that is digitally broadcast or video data that is distributed via a network such as the Internet.
  • connection terminal 9 connects the display 100 and the ambient lighting device 1 via the connection cable 301.
  • Video data and audio data input from the playback device 200 via the connection terminal 8 are output to the display 100 via the connection terminal 9 and the connection cable 301.
  • the display 100 displays an image corresponding to the input video data on the display screen 101 and outputs sound corresponding to the input audio data from a built-in or external speaker.
  • connection terminals 8 and 9 are HDMI (High-Definition Multimedia Interface) terminals
  • connection cables 300 and 301 are HDMI cables.
  • connection terminals 8 and 9 and the connection cables 300 and 301 terminals and cables compliant with various standards can be used.
  • the controller 6 is connected to the connection terminals 8 and 9 and the light source driver 7.
  • the controller 6 includes a processor 60 and a memory 61.
  • the processor 60 is, for example, a CPU (Central Processing Unit).
  • the memory 61 is composed of, for example, a ROM (Read Only Memory) and a RAM (Random Access Memory).
  • the memory 61 stores in advance a computer program to be executed by the processor 60, a lookup table (LUT) 62, and the like.
  • the lookup table 62 is setting information for obtaining the lighting brightness of each light source S from the video data. Details of the lookup table 62 will be described later with reference to FIG.
  • the memory 61 also functions as a work area used in the processing of the processor 60.
  • the memory 61 generates drive tables (DT) 63R, 63G, 63B and the like.
  • the drive table 63R is a table for writing the lighting brightness of the red LED in each light source S.
  • the drive table 63G is a table for writing the lighting brightness of the green LED in each light source S.
  • the drive table 63B is a table for writing the lighting brightness of the blue LED in each light source S. Details of the drive tables 63R, 63G, and 63B will be described later with reference to FIG.
  • the processor 60 implements various processes related to the operation of the ambient lighting device 1 by executing a computer program. For example, the processor 60 determines the lighting brightness of each LED of each light source S based on the video data input from the playback device 200, and writes it in the drive tables 63R, 63G, and 63B. Further, the processor 60 outputs the lighting luminance written in the drive tables 63R, 63G, and 63B to the light source driver 7.
  • the light source driver 7 drives each LED of each light source S according to the lighting luminance input from the processor 60.
  • Each light source S is driven by, for example, PWM (Pulse Width Modulation) control.
  • PWM Pulse Width Modulation
  • the light source driver 7 generates a drive signal having a duty ratio corresponding to the lighting luminance, and drives each LED of each light source S.
  • the controller 6 and the light source driver 7 are housed in a dedicated housing, for example, and are connected to the light source unit 3 via a cable. At least one of the controller 6 and the light source driver 7 may be accommodated in the light source hole 20.
  • the ambient lighting apparatus 1 is provided with 20 light sources S1 to S20 as an example.
  • the number of light sources S is not limited to this.
  • the luminance for emitting the red LEDs of the light sources S1 to S20 is called lighting luminance RS1 to RS20, and the luminance for emitting the green LEDs of the light sources S1 to S20 is called lighting luminance GS1 to GS20.
  • Luminances for causing the blue LEDs of the light sources S1 to S20 to emit light are referred to as lighting luminances BS1 to BS20.
  • FIG. 6 is a diagram showing an outline of processing for determining the lighting luminances RS1 to RS20, GS1 to GS20, and BS1 to BS20.
  • a plurality of areas A that are in contact with the end of the display screen 101 are defined.
  • the ambient lighting device 1 uses the red (R) average luminance RA of the pixels included in each area A and the green (G) of the pixels included in each area A.
  • Average luminance GA and the blue (B) average luminance BA of the pixels included in each region A are calculated.
  • the ambient lighting device 1 determines the lighting luminances RS1 to RS20, GS1 to GS20, and BS1 to BS20 based on the obtained average luminances RA, GA, and BA of each region A.
  • 20 regions A1 to A20 are defined in the same manner as the light sources S1 to S20.
  • the number of areas A is not limited to this.
  • Each of the areas A1 to A20 is, for example, a rectangle including the same number of pixels.
  • the average luminance RA of each of the regions A1 to A20 is called RA1 to RA20
  • the average luminance GA of each of the regions A1 to A20 is called GA1 to GA20
  • the average luminance BA of each of the regions A1 to A20 is called BA1 to BA20.
  • the average luminance RA1 to RA20, GA1 to GA20, BA1 to BA20, and the lighting luminance RS1 to RS20, GS1 to GS20, BS1 to BS20 are expressed in 256 gradations (8 bit unsigned integers).
  • the above-described lookup table 62 defines the relationship between the average luminances RA1 to RA20, GA1 to GA20, BA1 to BA20, and the lighting luminances RS1 to RS20, GS1 to GS20, BS1 to BS20.
  • FIG. 8 is a diagram showing an example of the data structure of the lookup table 62.
  • the lookup table 62 stores coefficients for determining the lighting luminances RS1 to RS20, GS1 to GS20, and BS1 to BS20 of the light sources S1 to S20 for each of the regions A1 to A20. In the present embodiment, the coefficient is determined in the range of 0.0 to 1.0.
  • the look-up table 62 determines the lighting luminances RS1 to RS20 from the average luminances RA1 to RA20, the lighting luminances GS1 to GS20 from the average luminances GA1 to GA20, and the lighting luminances BS1 to BS20 from the average luminances BA1 to BA20. Used in common.
  • the coefficient stored in the lookup table 62 may be determined by evaluating in advance the degree to which lighting of the light sources S1 to S20 contributes to illumination around the areas A1 to A20.
  • the drive tables 63R, 63G, and 63B described above have the same data structure.
  • FIG. 9 in the areas indicated by the matrix of “A1” to “A20” and “S1” to “S20”, the lighting luminances of the light sources S1 to S20 are individually set based on the average luminances RA1 to RA20 of the regions A1 to A20. The calculated result is written.
  • these lighting luminances are referred to as sub lighting luminances.
  • the average luminances RA1 to RA20 of the areas A1 to A20 are written.
  • the “RS” line the total value of the sub lighting luminances in the columns “S1” to “S20” is written. These total values represent the lighting luminances RS1 to RS20, respectively.
  • the sub lighting brightness of the drive table 63R is obtained by multiplying the average brightness RA1 to RA20 and the coefficient stored in the lookup table 62.
  • the average luminance RA1 of the area A1 is “255”.
  • the coefficients of the area A10 are “0.2” for the light source S9, “0.7” for the light source S10, “0.1” for the light source S11, and “0” for the other. In this case, as shown in FIG.
  • the light source S11 becomes 255 ⁇ 0.2 ⁇ “26” (rounded off after the decimal point).
  • the sub-lighting luminance of the red LED for the other areas A1 to A9 and A11 to A20 of the light sources S9 to S11 is “0”. Accordingly, the lighting luminances RS9, RS10, and RS11 of the light sources S1 to S11 are “51”, “179”, and “26”, respectively.
  • the controller 6 acquires one frame of video data from the video data input from the playback device 200 and stores it in the memory 61 (block B1).
  • the controller 6 calculates the average red brightness RA1 to RA20 of the areas A1 to A20 in the video data stored in the block B1 (block B2).
  • the controller 6 writes the calculated average luminances RA1 to RA20 in the drive table 63R.
  • the controller 6 determines the lighting luminances RS1 to RS20 based on the average luminances RA1 to RA20 calculated in the block B2 (block B3). Specifically, the controller 6 calculates the sub-lighting luminances of the red LEDs of the light sources S1 to S20 for each of the regions A1 to A20 by multiplying the average luminances RA1 to RA20 by the coefficients of the lookup table 62, and drives them. Write to table 63R. Further, the controller 6 calculates the lighting luminances RS1 to RS20 by adding the sub lighting luminances written in the driving table 63R for each of the light sources S1 to S20, and writes the lighting luminances RS1 to RS20 in the driving table 63R.
  • the controller 6 calculates green average luminances GA1 to GA20 in the areas A1 to A20 in the video data stored in the block B1 (block B4).
  • the controller 6 writes the calculated average luminance GA1 to GA20 in the drive table 63G.
  • the controller 6 determines the lighting luminances GS1 to GS20 based on the average luminances GA1 to GA20 calculated in the block B4 (block B5). Specifically, the controller 6 calculates the sub-lighting luminances of the green LEDs of the light sources S1 to S20 for each of the regions A1 to A20 by multiplying the average luminances GA1 to GA20 by the coefficients of the lookup table 62, and drives them. Write to table 63G. Further, the controller 6 calculates the lighting luminances GS1 to GS20 by summing the sub lighting luminances written in the driving table 63G for each of the light sources S1 to S20, and writes them in the driving table 63G.
  • the controller 6 calculates blue average luminances BA1 to BA20 of the areas A1 to A20 in the video data stored in the block B1 (block B6).
  • the controller 6 writes the calculated average luminances BA1 to BA20 in the drive table 63B.
  • the controller 6 determines the lighting luminances BS1 to BS20 based on the average luminances BA1 to BA20 calculated in the block B6 (block B7). Specifically, the controller 6 calculates the sub-lighting luminance of the blue LEDs of the light sources S1 to S20 for each of the regions A1 to A20 by multiplying the average luminances BA1 to BA20 by the coefficients of the lookup table 62, and drives them. Write to table 63B. Further, the controller 6 calculates the lighting luminances BS1 to BS20 by summing the sub lighting luminances written in the driving table 63B for each of the light sources S1 to S20, and writes the lighting luminances BS1 to BS20 in the driving table 63B.
  • the controller 6 drives the light sources S1 to S20 via the light source driver 7 (block B8). Specifically, the controller 6 outputs the lighting luminances RS1 to RS20, GS1 to GS20, and BS1 to BS20 written in the drive tables 63R, 63G, and 63B to the light source driver 7.
  • the light source driver 7 generates a drive signal having a duty ratio corresponding to the lighting luminances RS1 to RS20, GS1 to GS20, and BS1 to BS20, and drives the LEDs of the respective colors of the light sources S1 to S20.
  • the lighting that the controller 6 outputs to the light source driver 7 is performed.
  • the luminances RS1 to RS20, GS1 to GS20, and BS1 to BS20 may be corrected.
  • the lighting luminances RS1 to RS20, GS1 to GS20, BS1 to BS20 are normally set so that the highest luminance among the lighting luminances RS1 to RS20, GS1 to GS20, and BS1 to BS20 is “255”. Can be adopted.
  • a function for performing such correction may be provided in the light source driver 7 instead of the controller 6.
  • the light interlocked with the image displayed on the display screen 101 is emitted from the ambient lighting device 1 to the periphery of the display 100.
  • the light from the light source S arranged in the light source hole 20 is guided by the light guide plate 2 and emitted from the outer peripheral edge of the light guide plate 2.
  • light from adjacent light sources S is mixed in the light guide plate 2 and functions as a light emitting surface in which the outer peripheral edge of the light guide plate 2 is continuous. Therefore, the light emitted from the outer peripheral edge of the light guide plate 2 has a smooth and natural luminance distribution, and illuminates the surroundings with almost no color unevenness or luminance unevenness.
  • the ambient lighting device 1 controls the light source S based on the video data of the video displayed on the display 100. Therefore, the ambient lighting device 1 can illuminate the surroundings in conjunction with the video.
  • each light source S based on the luminance of the pixels included in the plurality of regions A as in the present embodiment, illumination linked to the luminance of each region A becomes possible.
  • the lighting brightness of the LEDs of each color constituting each light source S is determined based on the average brightness of each color of the pixels included in each area A and the weighted coefficient as shown in FIG. 8 as in this embodiment.
  • the light emitted from the ambient lighting device 1 to the surroundings has the same color as that of the adjacent region A. Therefore, a visual effect is provided to the viewer as if the end of the video displayed on the display 100 is expanded. Thereby, the force of the image displayed on the display 100 is increased, and the feeling of immersion in the image is further enhanced.
  • the ambient lighting device 1 since the ambient lighting device 1 according to the present embodiment includes the reflection sheets 4 and 5, it is possible to increase the efficiency of light guide by the light guide plate 2.
  • the ambient lighting device 1 is connected to the playback device 200 and the display 100 via connection cables 300 and 301 such as HDMI cables.
  • connection cables 300 and 301 such as HDMI cables.
  • the controller 6 may control each light source S based on parameters other than the average brightness of each region A. For example, the controller 6 may control each color LED of each light source S based on the average luminance of each color of the entire video displayed on the display 100.
  • the controller 6 may estimate the chromaticity of the light source (illumination) when the video is shot from the video displayed on the display 100, and control each light source S based on the result.
  • the controller 6 may control each light source S according to a parameter relating to ambient light such as ambient brightness of the ambient lighting device 1.
  • a sensor that detects a parameter related to ambient light is provided in the ambient lighting device 1, and the controller 6 controls each light source S based on the detection result of the sensor.
  • each light source S may be fixed to a specific color and brightness to emit light. In this case, by causing each light source S to emit light with an appropriate color and brightness, an effect of reducing eye strain caused by the difference between the brightness of the display screen 101 and the surrounding brightness can be obtained.
  • the controller 6 may selectively switch the control method of the light source S based on the above average brightness or ambient brightness according to a user instruction or the like.
  • the switching instruction may be input from the playback device 200 or the display 100 via the connection terminals 8 and 9, or may be input via an operation unit such as a button provided in the ambient lighting device 1. Also good.
  • the controller 6 may perform gamma correction on the lighting luminances RS1 to RS20, GS1 to GS20, and BS1 to BS20, and control each light source S based on the corrected lighting luminance.
  • the user may arbitrarily specify a gamma value used for gamma correction.
  • the gamma value may be specified from the playback device 200 or the display 100 via the connection terminals 8 and 9, or specified via an operation unit such as a button provided on the ambient lighting device 1. Also good.
  • the lookup table 62 that stores the coefficients related to all the light sources S and the region A. For example, if a look-up table 62 in which coefficients indicating the relationship between the continuous light sources S of 1/2 or 1/4 and the area A corresponding to these light sources S is prepared, all the light sources S are turned on. The luminance can be calculated using the coefficient stored in the lookup table 6.
  • the light emitting element of the light source S is not limited to the LED, and may be a light emitting element such as an organic EL (ElectroLuminescence).
  • the light source S may include light emitting elements of colors other than red, green, and blue.
  • the number of light emitting elements included in the light source S is not limited to three, but may be one or two, or may be four or more.
  • the control method of each light source S may be appropriately modified. For example, when the light source S includes only a single color light emitting element, the controller 6 calculates one average luminance for each region A without distinguishing red, green, and blue, and sets each light source S based on this average luminance. You may control.
  • the method for attaching the ambient lighting device 1 is not limited to the method using the double-sided tape 110.
  • the ambient lighting device 1 may be attached to the display 100 via a screw or the like.
  • the display 100 is of a type that is hung on a wall surface via a dedicated metal fitting and a plurality of female screws for attachment to the metal fitting are provided on the back surface of the display 100, ambient lighting using the female screw and the metal fitting is used.
  • the device 1 can also be attached to the display 100. Specifically, a through hole corresponding to the plurality of female screws is provided in the light guide plate 2, a male screw for fixing the display 100 and the metal fitting is passed through the through hole, and the ambient lighting device 1 is interposed.
  • the display 100 is fixed to the metal fitting. If attached in this way, the ambient illumination device 1 is attached to the display 100 without providing a special structure for attaching the ambient illumination device 1 to the display 100 and without using a special tool such as the double-sided tape 110. Can do.
  • the ambient lighting device 1 may be incorporated in the display 100 instead of being attached to the back surface of the display 100.
  • the light source hole 20 may be covered with a black absorbing sheet that absorbs light from each light source (S).
  • a black absorbing sheet that absorbs light from each light source (S).
  • Such an absorbent sheet may be provided so as to cover the front surface 21 side of the light source hole 20 when the light source unit 3 is inserted and attached from the rear surface 22 side of the light guide plate 2 as shown in FIG.
  • the light guide plate 2 may emit light from at least one of the front surface 21 and the rear surface 22 as well as the outer peripheral edge.
  • This modification will be described with reference to the schematic diagram of FIG.
  • the light guide plate 2 according to the modification has a shape larger than the shape of the display 100 viewed from the same direction when viewed from the front direction of the display screen 101.
  • the light guide plate 2 scatters the light guided by the light guide plate 2 to the portion 27 protruding from the display 100 when viewed from the front direction of the display screen 101 and radiates it to the front side of the display screen 101 and the opposite side thereof.
  • the scattering mark is a dot pattern formed of, for example, a white pigment.
  • the reflection sheets 4 and 5 are sized so as not to cover the portion 27.
  • a scattering mark is provided on the rear surface 22 side of the portion 27, light scattered by the scattering mark is emitted from the front surface 21 side as indicated by an arrow D1.
  • the scattering mark is provided on the front surface 21 side of the portion 27, the light scattered by the scattering mark is emitted from the rear surface 22 side as indicated by an arrow D2.
  • An arrow D3 indicates light emitted from the outer peripheral edge of the light guide plate 2.
  • the light guide plate 2 may have a scattering mark on only one of the front surface 21 side and the rear surface 22 side.
  • the direction of the outer peripheral edge changes greatly at the four corners of the light guide plate 2, so that the light emitted from the outer peripheral edge has an unnatural luminance distribution. There is a fear. Therefore, the four corners of the light guide plate 2 may be chamfered.
  • This modification will be described with reference to the schematic diagram of FIG.
  • the light guide plate 2 shown in the figure has four corners rounded and chamfered with a radius R1.
  • a specific value of the radius R1 may be determined as appropriate so that light emitted from the outer peripheral edge of the light guide plate 2 has a natural luminance distribution and the periphery of the display 100 is favorably illuminated.
  • FIG. 12 shows an example in which the angles formed by the front surface 21 and the rear surface 22, and the upper edge surface 23, the lower edge surface 24, the left edge surface 25, and the right edge surface 26 are rounded and chamfered with a radius R2.
  • the light source hole 20 is not limited to a perfect circle, and may be another shape such as an ellipse or a polygon. A modification of the shape of the light source hole 20 will be described with reference to FIG.
  • the light source hole 20 shown in the figure is an ellipse having a major axis L1 and a minor axis L2.
  • the major axis L1 and the minor axis L2 may be determined so that the ratio thereof is substantially the same as the aspect ratio of the display screen 101, for example.
  • Each light source S is arranged in an elliptical shape along the inner wall surface 20 a of the light source hole 20.
  • (Appendix 1) It has a hole portion (20) in which the inner wall surface (20a) functions as a light collecting surface for collecting light, and guides light collected from the inner wall surface (20a) to provide outer peripheral edges (23, 24, 25, 26). And a plurality of light sources (S) arranged along the inner wall surface (20a) of the hole portion (20) and irradiating the inner wall surface (20a) with light. apparatus.
  • Appendix 2 The illumination device according to appendix 1, further comprising a control unit (6) that controls the plurality of light sources (S) based on video data displayed on the display (100).
  • the light source (S) includes a plurality of light emitting elements that emit light of different colors, and the control unit (6) determines the luminance of the light emitting elements included in the plurality of light sources (S) based on the data.
  • the lighting device according to appendix 2 wherein the light emitting element emits light with the determined luminance.
  • the control unit (6) calculates an average value of luminance of pixels of the video indicated by the data for each of the plurality of regions (A) defined on the display screen (101) of the display (100).
  • the illumination device according to appendix 2 wherein brightness of the plurality of light sources (S) is determined based on the average value, and the plurality of light sources (S) emit light with the determined brightness.
  • the controller controls the plurality of light sources (S) based on setting information (62) defining a relationship between the average value for each of the plurality of regions (A) and the luminance of the plurality of light sources (S).
  • the lighting device according to appendix 4, wherein brightness is determined and the plurality of light sources (S) emit light with the determined brightness.
  • Appendix 7 The lighting device according to appendix 1, wherein the light guide plate (2) has a rectangular flat plate shape with four corners chamfered.
  • the light guide plate (2) is attached to the back surface of the display (100), and the shape of the light guide plate (2) viewed from the front direction of the display screen (101) of the display (100) is viewed from the direction.
  • the light guide plate (2) is larger than the shape of the display (100), and the light guide plate (2) is guided by the light guide plate (2) to a portion (27) protruding from the display (100) when viewed from the direction.
  • appendix 9 The illuminating device according to appendix 1, further comprising an absorption sheet that covers the light source hole (20) and absorbs light from the plurality of light sources (S).
  • the light source hole (20) has a regular circular shape or an elliptical shape in which the ratio of the major axis (L1) to the minor axis (L2) is substantially the same as the aspect ratio of the display screen (101) of the display (100).
  • a display device comprising a display (100) for displaying an image and any one of the illumination devices according to attachments 1 to 11.
  • (Appendix 13) It has a hole portion (20) in which the inner wall surface (20a) functions as a light collecting surface for collecting light, and guides light collected from the inner wall surface (20a) to provide outer peripheral edges (23, 24, 25, 26). And a plurality of light sources (S) arranged along the inner wall surface (20a) of the hole portion (20) and irradiating the inner wall surface (20a) with light.
  • a control method for an apparatus comprising: acquiring video data displayed on a display (100); and controlling the plurality of light sources (S) based on the acquired data.
  • the light source (S) includes a plurality of light emitting elements that emit light of different colors, and the controlling determines brightness of the light emitting elements respectively included in the plurality of light sources (S) based on the data.
  • the controlling includes calculating an average value of luminance of pixels of the video indicated by the data for each of the plurality of areas (A) defined on the display screen (101) of the display (100).
  • the control method according to appendix 13, comprising: determining the luminance of the plurality of light sources (S) based on the average value determined; and causing the plurality of light sources (S) to emit light at the determined luminance. .
  • S DESCRIPTION OF SYMBOLS
  • S Light source, 1 ... Ambient illumination device, 2 ... Light guide plate, 3 ... Light source part, 4, 5 ... Reflection sheet, 6 ... Controller, 7 ... Light source driver, 8, 9 ... Connection terminal, 20 ... Light source hole, 20a ... Inner wall surface, 30 ... substrate, 62 ... look-up table, 63R, 63G, 63B ... drive table, 100 ... display, 101 ... display screen, 200 ... playback device.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • Planar Illumination Modules (AREA)

Abstract

Selon un mode de réalisation de la présente invention, un appareil d'éclairage est équipé d'une plaque de guidage de lumière, et d'une pluralité de sources de lumière. La plaque de guidage de lumière comporte un trou, sa surface de paroi interne fonctionnant en tant que surface de capture de lumière qui capture de la lumière, et la plaque de guidage de lumière guide la lumière capturée au moyen de la surface de paroi interne, et émet la lumière à partir d'une extrémité circonférentielle externe. Les sources de lumière sont disposées le long de la surface de paroi interne du trou, et émettent la lumière vers la surface de paroi interne.
PCT/JP2013/076542 2013-09-30 2013-09-30 Appareil d'éclairage, appareil d'affichage, et procédé de commande Ceased WO2015045154A1 (fr)

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CN105116610A (zh) * 2015-09-22 2015-12-02 深圳市华星光电技术有限公司 一种背光模组

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JPH11345691A (ja) * 1998-06-04 1999-12-14 Matsushita Electric Ind Co Ltd 照明環境調整方法、照明環境調整システムおよび照明器具
JP2007242508A (ja) * 2006-03-10 2007-09-20 Yamaha Livingtec Corp 照明パネルユニット
JP2009520334A (ja) * 2005-12-20 2009-05-21 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ 周囲照明を与える層状光導波路
WO2011043002A1 (fr) * 2009-10-07 2011-04-14 シャープ株式会社 Module de source de lumière et appareil électronique le comportant
JP2011171261A (ja) * 2010-02-22 2011-09-01 Mabuchi Shomei Seisakusho:Kk ポール型ライト
JP2012505585A (ja) * 2008-10-09 2012-03-01 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ ディスプレイデバイス、ディスプレイデバイスの発光ダイオードアレイを制御する方法、及び、コンピュータプログラム製品

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Publication number Priority date Publication date Assignee Title
JPS55118582U (fr) * 1979-02-13 1980-08-21
JPH11345691A (ja) * 1998-06-04 1999-12-14 Matsushita Electric Ind Co Ltd 照明環境調整方法、照明環境調整システムおよび照明器具
JP2009520334A (ja) * 2005-12-20 2009-05-21 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ 周囲照明を与える層状光導波路
JP2007242508A (ja) * 2006-03-10 2007-09-20 Yamaha Livingtec Corp 照明パネルユニット
JP2012505585A (ja) * 2008-10-09 2012-03-01 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ ディスプレイデバイス、ディスプレイデバイスの発光ダイオードアレイを制御する方法、及び、コンピュータプログラム製品
WO2011043002A1 (fr) * 2009-10-07 2011-04-14 シャープ株式会社 Module de source de lumière et appareil électronique le comportant
JP2011171261A (ja) * 2010-02-22 2011-09-01 Mabuchi Shomei Seisakusho:Kk ポール型ライト

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105116610A (zh) * 2015-09-22 2015-12-02 深圳市华星光电技术有限公司 一种背光模组
WO2017049604A1 (fr) * 2015-09-22 2017-03-30 深圳市华星光电技术有限公司 Module de rétroéclairage
US9841627B2 (en) 2015-09-22 2017-12-12 Shenzhen China Star Optoelectronics Technology Co., Ltd Backlight module

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