CN109147562B - Display device and control method thereof - Google Patents
Display device and control method thereof Download PDFInfo
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- CN109147562B CN109147562B CN201811112989.XA CN201811112989A CN109147562B CN 109147562 B CN109147562 B CN 109147562B CN 201811112989 A CN201811112989 A CN 201811112989A CN 109147562 B CN109147562 B CN 109147562B
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- light
- guide plate
- light guide
- light source
- display device
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V19/00—Fastening of light sources or lamp holders
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
- F21V29/71—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks using a combination of separate elements interconnected by heat-conducting means, e.g. with heat pipes or thermally conductive bars between separate heat-sink elements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V33/00—Structural combinations of lighting devices with other articles, not otherwise provided for
- F21V33/0004—Personal or domestic articles
- F21V33/0052—Audio or video equipment, e.g. televisions, telephones, cameras or computers; Remote control devices therefor
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- 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
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- 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
- G02B6/0073—Light emitting diode [LED]
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- 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
- G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
- G02B6/0085—Means for removing heat created by the light source from the package
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- 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
- G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
- G02B6/0086—Positioning aspects
- G02B6/0088—Positioning aspects of the light guide or other optical sheets in the package
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- General Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Theoretical Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
Abstract
The application discloses display device and control method thereof, the display device comprises a shell, a first light source and a first light guide plate are fixedly connected to the shell, and the first light guide plate is used for guiding light rays emitted by the first light source to obliquely diffuse and emit to the periphery of the rear side of the shell. Above-mentioned scheme, the light of first light source to the peripheral slope of casing rear side scatter the outgoing, makes the light intensity reduce from display device to the periphery gradually, has formed comparatively soft background light, has lightened the burden of people's eye.
Description
Technical Field
The present invention relates generally to the field of display technologies, and more particularly, to a display device and a control method thereof.
Background
Television is an important tool for information acquisition and entertainment. With the progress of display technology, the size of the television is larger, but in the household, the size of the room is limited, the viewing distance is not improved much, and in addition, the image quality of the television is higher and higher, the color is brighter and more gorgeous, and the visual fatigue is easy to cause for people who watch the television for a long time.
Especially when the ambient light is weakened, such as watching in the case of turning off the light at night, the television picture switching flicker further increases the burden on the human eyes. It is conventional practice to turn on a light source, such as a wall light, or a ceiling light, to increase the intensity of ambient light to reduce this burden. However, in the two light sources, the spot light is used for decoration, the strong light area of the light beam is obviously irradiated on the television, and the top light is used for illumination at ordinary times, and the top light is irradiated on the television to have a certain reflection, so that the two light sources affect the watching. Meanwhile, both are light sources with fixed brightness, and the brightness of the environment is gradually changed, so that if the environment is only used for opening and relieving fatigue when watching television, the power consumption is also quite large.
Disclosure of Invention
In view of the above-mentioned drawbacks and deficiencies of the prior art, it is desirable to provide a display device and a control method thereof for supplementing light according to the brightness of the environment to reduce or eliminate the visual fatigue caused by the flicker of the switching of the image.
In a first aspect, the present invention provides a display device, which includes a housing, wherein a first light source and a first light guide plate are fixedly connected to the housing, and the first light guide plate is configured to guide light emitted from the first light source to obliquely diverge and exit to a periphery of a rear side of the housing.
Further, the first light source is fixedly arranged in the shell, a through groove is formed in the shell, and the first light guide plate is installed in the through groove in an inosculating mode.
Further, all be provided with around the casing first light guide plate, the light incident face of first light guide plate all just is provided with first light source.
Furthermore, the light incident surface is provided with a transparent bulge.
Further, the protrusion and the first light guide plate are of an integral structure.
Further, along the direction from inside to outside of the shell, the arrangement density of the bulges is reduced in sequence, the volume of the bulges is increased in sequence, and the heights of the bulges are the same.
Furthermore, a reflecting film, a second light guide plate, an optical module and a display assembly are sequentially arranged in the shell from back to front; a lamp group is arranged at a position opposite to the second light guide plate, the lamp group comprises a mounting part, a second light source and the first light source, the second light source and the first light source are respectively arranged at two sides of the mounting part, and the second light source is opposite to the second light guide plate; fixedly connected with glues the frame in the casing, the rear end of installed part with the reflective membrane overlap joint, the front end of installed part with glue frame top and stop the cooperation.
Furthermore, the mounting part is a heat conducting strip with a section in a corner-cut rectangular shape, and first LED lamps are uniformly distributed on the long side surface of the heat conducting strip along the length direction of the heat conducting strip; second LED lamps are uniformly distributed on the corner cutting surface of the heat conducting strip along the length direction of the heat conducting strip, first power wires connected with the first LED lamps are arranged on the long side surface, and second power wires connected with the second LED lamps are arranged on the corner cutting surface; alternatively, the first and second electrodes may be,
the mounting part is a heat conduction strip with a rectangular cut angle in cross section, a first PCB is arranged on the long side face of the heat conduction strip, first LED lamps are evenly arranged on the first PCB along the length direction of the heat conduction strip, each first LED lamp is connected with a first printed power line on the first PCB, a second PCB is arranged on the cut angle face of the heat conduction strip, a second LED lamp is evenly arranged on the second PCB along the length direction of the heat conduction strip, and each second LED lamp is connected with a second printed power line on the second PCB.
Further, the angle of the chamfer is between 20-70 degrees.
In another aspect, the present invention provides a method for controlling the display device, including:
acquiring a current brightness value in an environment;
and judging whether the brightness value is smaller than a fill-in light threshold value, if so, adjusting the first light source to the corresponding fill-in light brightness according to the corresponding relation between the brightness value and the fill-in light brightness.
According to the above technical scheme of this application, the light of first light source to the peripheral slope of casing rear side scatter the outgoing, makes the light intensity reduce from display device to the periphery gradually, has formed comparatively soft background light, has alleviateed the burden of people's eye.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
fig. 1 is a state diagram of a display device according to an embodiment of the present invention;
fig. 2 is a partial view of a display device according to an embodiment of the present invention;
FIG. 3 is a schematic view of a first light guide plate according to an embodiment of the invention;
FIG. 4 is an elevation view of a light entrance face of an embodiment of the present invention;
FIG. 5 is a front view of a lamp set of an embodiment of the present invention;
FIG. 6 is a bottom view of FIG. 5;
FIG. 7 is a left side view of FIG. 5;
FIG. 8 is a cross-sectional view of a lamp stack in another configuration in accordance with an embodiment of the present invention;
fig. 9 is a flowchart of a control method of a display device according to an embodiment of the present invention;
fig. 10 is a diagram illustrating a correspondence relationship between luminance values and fill-in luminance.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1-3, an embodiment of the invention provides a display device, which includes a housing 12, a first light source 6 and a first light guide plate 5 are fixedly connected to the housing 12, and the first light guide plate 5 is used for guiding light emitted from the first light source 6 to obliquely diverge and emit the light toward the periphery of the rear side of the housing 12.
The display device may be a television, a computer display, or the like.
The first light source 6 may be, but is not limited to, a stripe light source. The first light guide plate 5 may be a stripe-shaped light guide plate matched with the first light source 6.
The width of the first light guide plate 5 on the light incident side may be smaller than that on the light emitting side, so that the light is emitted in a divergent manner, forming a larger illumination area 2. Further, the first light guide plate 5 is disposed obliquely toward the periphery of the case 12 so that the exit light exits toward the periphery, i.e., the outside, of the case 12.
By adopting the structure, the light of the first light source 6 is obliquely emitted to the periphery of the rear side of the shell 12, gradually weakened light is formed by projecting light from the edge of the display device to the rear wall of the display device, and the light can be mixed with light in the environment to form softer background light after being subjected to diffuse reflection of the wall, so that the burden on the glasses 4 is reduced.
Further, in order to protect the first light source 6 and reduce the manufacturing cost, the first light source 6 may be fixedly disposed in the housing 12, a through groove is disposed on the housing 12, and the first light guide plate 5 is fittingly mounted in the through groove. By adopting the structure, the through groove for installing the first light guide plate 5 can be arranged on the basis of the original shell 12, the change of a mould for manufacturing the shell 12 is small, and the cost is reduced. In addition, first light source 6 sets up in casing 12, can make full use of the space in casing 12, provides the utilization ratio of casing 12 inner space, still is convenient for protect first light source 6 simultaneously, prevents unexpected damage first light source 6.
Further, in order to make the ambient light on the rear side of the display device more uniform, the first light guide plates 5 are disposed around the housing 12, and the light incident surfaces of the first light guide plates 5 are opposite to the first light sources 6.
Further, in order to make the emitted light intensity have a gradual change effect and make the emitted light better merge with the ambient light, the light incident surface 14 is disposed with a transparent protrusion 18 to perform diffuse reflection on the light. The transparent protrusions 18 are, for example, but not limited to, cylindrical.
Further, the protrusion 18 is integrated with the first light guide plate 5. The material of the first light guide plate 5 may be polymethyl methacrylate or glass, and the protrusions 18 may be formed by laser engraving or the like.
Further, referring to fig. 4, along the direction from inside to outside (for example, the direction from left to right in fig. 3), the arrangement density of the protrusions 18 is sequentially reduced, the volume of the protrusions 18 is sequentially increased, and the heights of the protrusions 18 are the same.
Further, the housing 12 is sequentially provided with a reflective film 11, a second light guide plate 10, an optical module 9 and a display module 8 from back to front, wherein the reflective film 11, the second light guide plate 10, the optical module 9 and the display module 8 may be the same as corresponding components in the existing display device, and detailed description of specific mechanisms thereof is omitted herein; a lamp set is arranged at a position opposite to the second light guide plate 10, the lamp set comprises a mounting part 12, a second light source 13 and a first light source 6, the second light source 13 and the first light source 6 are respectively arranged at two sides of the mounting part 12, and the second light source 13 is opposite to the second light guide plate 10; frame 7 is glued to fixedly connected with in the casing 12, and the rear end and the 11 overlap joints of reflectance coating of installed part 12, the front end and the gluey frame 7 top of installed part 12 are stopped the cooperation.
The second light source 13 is, for example, but not limited to, a stripe light source.
The rear end of installed part 12 and 11 overlap joints of reflectance coating, the front end of installed part 12 with glue frame 7 top and end the cooperation for mutual independence between first light source 6 and the second light source 13, mutual interference can not appear in the light that sends between the two.
Further, as shown in fig. 5 to 7, the mounting member 12 is a heat conductive strip having a cut rectangular cross section, wherein the cut rectangular cross section is a rectangular cross section that is chamfered at one corner. The heat conducting strip is made of, for example, but not limited to, aluminum alloy to dissipate heat by utilizing good thermal conductivity, and the heat conducting strip may be formed by extruding the aluminum alloy strip. First LED lamps serving as second light sources 13 are uniformly distributed on the long side surface (the surface where the long side of the corner cut rectangle is located) of the heat conducting strip along the length direction of the heat conducting strip; second LED lamps are uniformly distributed on the corner cutting surface (the surface where the edge formed by the corner cutting rectangular chamfer is located) of the heat conducting strip along the length direction of the heat conducting strip, first power wires connected with the first LED lamps are arranged on the long side surface, and second power wires connected with the second LED lamps are arranged on the corner cutting surface. The first LED lamp and the second LED are independently controlled, and the brightness of the first LED lamp can be controlled through the inductor to adapt to the change of ambient light. The second LED is used as a backlight light source of the display device and provides a light source for normal display of the display device.
Referring to fig. 8, the mounting member 12 is a heat conducting strip with a rectangular cut-off section, a first PCB15 is disposed on a long side of the heat conducting strip, first LED lamps serving as the second light sources 13 are uniformly disposed on the first PCB15 along a length direction of the heat conducting strip, each first LED lamp is connected to a first printed power line on the first PCB15, a second PCB16 is disposed on the cut-off section of the heat conducting strip, second LED lamps serving as the first light sources 6 are uniformly disposed on the second PCB16 along the length direction of the heat conducting strip, and each second LED lamp is connected to a second printed power line on the second PCB 16.
In order to facilitate the installation and fixation of the first PCB15 and the second PCB16, two parallel ribs 17 may be respectively disposed on the long side surface and the corner cutting surface, an accommodating space is formed between the two ribs 17, and the first PCB15 and the second PCB16 are respectively clamped in the corresponding accommodating spaces.
Further, the angle of the cut angle is between 20 and 70 degrees, so that the light has a better exit angle, the wall at the back of the display device is irradiated as much as possible, and the gradual change of the light can be improved.
As shown in fig. 9, the present invention provides a method for controlling the display device, including the steps of:
s1: acquiring a current brightness value in an environment;
in this embodiment, a television is used as an example of the display device.
Referring to fig. 1, a light intensity sensor is installed in a remote controller 3 of the television 1 and is used for measuring a current brightness value in an environment, and the remote controller 3 transmits the current brightness value to a control system of the television 1 through infrared communication.
A switch may be provided on the remote control 3 to control the operating state of the light intensity sensor.
S2: and judging whether the brightness value is smaller than a fill-in light threshold value, if so, adjusting the first light source to the corresponding fill-in light brightness according to the corresponding relation between the brightness value and the fill-in light brightness.
When receiving the current brightness value, the control system of the television compares the current brightness value with a light supplement threshold value, the light supplement threshold value is used for representing the brightness value of the light supplement to be started, and if the brightness value is smaller than the light supplement threshold value, the control system of the television adjusts the first light source to the corresponding light supplement brightness according to the corresponding relation between the brightness value and the light supplement brightness.
The corresponding relationship between the luminance value and the fill-in luminance can be seen in fig. 10, where in fig. 10, the abscissa is time t and the ordinate is luminance lXWherein, the smaller the luminance value is, the larger the fill-in luminance is.
The following description will be given by taking a period of time in real life, such as afternoon to evening hours, as an example. For example, t0 is 1 PM corresponding to the ambient brightness lx3Brightest, shifted to t over time1At 5 pm, during which the brightness slowly decreases, and at t1To t2From 5 pm to 7 pm, the ambient light decreases sharply until a complete darkness of lx0. In the whole process, a key is used for opening a switch on the remote controller for controlling the light intensity sensor, the light intensity sensor senses the brightness of the ambient light, and when the brightness is lower than lx1At this threshold, the optical compensation is turned on to compensate the light intensity in the ambient light to the ambient light level l suitable for viewingx2And to maintain this enhanced ambient light at all times. While if the ambient light is above this lx2The side does not need to turn on the compensating light source.
In the actual use process, the light sensing monitoring is not required to be started all the time, but the light sensing monitoring is started again when the actual viewer needs to compensate, and the brightness l of the average human opening is changedXIs set at lx0And lx1In this way, the compensating ambient light source can be turned on directly even at the point of use.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (5)
1. A display device comprises a shell, and is characterized in that a first light source and a first light guide plate are fixedly connected to the shell, and the first light guide plate is used for guiding light rays emitted by the first light source to obliquely diffuse and emit towards the periphery of the rear side of the shell;
the width of the light incidence side of the first light guide plate is smaller than that of the light emergence side of the first light guide plate, and the first light guide plate is obliquely arranged towards the periphery of the shell;
the reflection film, the second light guide plate, the optical module and the display assembly are sequentially arranged in the shell from back to front; a lamp group is arranged at a position opposite to the second light guide plate, the lamp group comprises a mounting part, a second light source and the first light source, the second light source and the first light source are respectively arranged at two sides of the mounting part, and the second light source is opposite to the second light guide plate; a rubber frame is fixedly connected in the shell, the rear end of the mounting piece is in lap joint with the reflecting film, and the front end of the mounting piece is in top stop fit with the rubber frame;
the first light guide plates are arranged on the periphery of the shell, and the light incident surfaces of the first light guide plates are provided with the first light sources in a manner of facing the light incident surfaces;
the light incident surface is provided with light-transmitting bulges;
along the direction from inside to outside of casing, bellied density of arranging reduces in proper order, bellied volume increases in proper order, and each bellied height is the same.
2. The display device according to claim 1, wherein the first light source is fixedly disposed in the housing, a through groove is disposed on the housing, and the first light guide plate is fittingly mounted in the through groove.
3. The display device according to claim 1, wherein the protrusion is of a unitary structure with the first light guide plate.
4. The display device according to claim 1, wherein the mounting member is a heat conducting strip with a cut-angle rectangular cross section, and first LED lamps are uniformly arranged on a long side surface of the heat conducting strip along the length direction of the heat conducting strip; second LED lamps are uniformly distributed on the corner cutting surface of the heat conducting strip along the length direction of the heat conducting strip, first power wires connected with the first LED lamps are arranged on the long side surface, and second power wires connected with the second LED lamps are arranged on the corner cutting surface; alternatively, the first and second electrodes may be,
the mounting part is a heat conduction strip with a rectangular cut angle in cross section, a first PCB is arranged on the long side face of the heat conduction strip, first LED lamps are evenly arranged on the first PCB along the length direction of the heat conduction strip, each first LED lamp is connected with a first printed power line on the first PCB, a second PCB is arranged on the cut angle face of the heat conduction strip, a second LED lamp is evenly arranged on the second PCB along the length direction of the heat conduction strip, and each second LED lamp is connected with a second printed power line on the second PCB.
5. A display device as claimed in claim 4, characterised in that the angle of the chamfer is between 20 and 70 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811112989.XA CN109147562B (en) | 2018-09-25 | 2018-09-25 | Display device and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811112989.XA CN109147562B (en) | 2018-09-25 | 2018-09-25 | Display device and control method thereof |
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| CN109147562A CN109147562A (en) | 2019-01-04 |
| CN109147562B true CN109147562B (en) | 2021-12-03 |
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| KR20130039972A (en) * | 2011-10-13 | 2013-04-23 | 엘지이노텍 주식회사 | The backlight unit and the display device having the same |
| CN205919134U (en) * | 2016-07-12 | 2017-02-01 | 广东宏磊达光电科技有限公司 | Gather bright ball face lens |
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| CN109147562A (en) | 2019-01-04 |
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