WO2018130214A1 - 背光装置 - Google Patents

背光装置 Download PDF

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Publication number
WO2018130214A1
WO2018130214A1 PCT/CN2018/072584 CN2018072584W WO2018130214A1 WO 2018130214 A1 WO2018130214 A1 WO 2018130214A1 CN 2018072584 W CN2018072584 W CN 2018072584W WO 2018130214 A1 WO2018130214 A1 WO 2018130214A1
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WO
WIPO (PCT)
Prior art keywords
light
optical
backlight
backlight device
display panel
Prior art date
Application number
PCT/CN2018/072584
Other languages
English (en)
French (fr)
Inventor
熊全宾
Original Assignee
矽创电子股份有限公司
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 矽创电子股份有限公司 filed Critical 矽创电子股份有限公司
Priority to EP18739085.1A priority Critical patent/EP3570088A4/en
Priority to JP2019559151A priority patent/JP6968199B2/ja
Priority to US16/477,703 priority patent/US10754155B2/en
Publication of WO2018130214A1 publication Critical patent/WO2018130214A1/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/0149—Head-up displays characterised by mechanical features
    • 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
    • F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
    • 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
    • F21V29/502—Cooling arrangements characterised by the adaptation for cooling of specific components
    • F21V29/503—Cooling arrangements characterised by the adaptation for cooling of specific components of light sources
    • 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
    • F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • F21V29/76—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section
    • 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
    • F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • F21V29/76—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section
    • F21V29/763—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section the planes containing the fins or blades having the direction of the light emitting axis
    • 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
    • F21V7/00—Reflectors for light sources
    • F21V7/0025—Combination of two or more reflectors for a single light source
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/16—Type of output information
    • B60K2360/167—Vehicle dynamics information
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/20—Optical features of instruments
    • B60K2360/33—Illumination features
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B60K35/20—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor
    • B60K35/21—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor using visual output, e.g. blinking lights or matrix displays
    • B60K35/23—Head-up displays [HUD]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B60K35/20—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor
    • B60K35/28—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor characterised by the type of the output information, e.g. video entertainment or vehicle dynamics information; characterised by the purpose of the output information, e.g. for attracting the attention of the driver
    • 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
    • F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • 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]
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/0149—Head-up displays characterised by mechanical features
    • G02B2027/015—Head-up displays characterised by mechanical features involving arrangement aiming to get less bulky devices
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/0101—Head-up displays characterised by optical features
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133628—Illuminating devices with cooling means
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2203/00—Function characteristic
    • G02F2203/02—Function characteristic reflective

Definitions

  • the present invention relates to a backlight device, and more particularly to a backlight device that provides a backlight to a display panel.
  • the head-up display is currently widely used in the vehicle's driving aids.
  • the heads-up display can be integrated and replaced with a wide variety of traditional dashboards, such as speedometers, fuel gauges, status warning lights, and more.
  • a general heads-up display needs to be equipped with a backlight to display an image.
  • a general backlight device needs to be disposed in a limited space with a head-up display to provide optical imaging, and a general backlight device requires more space to operate optical reflection, so that the overall size of the head-up display is increased, and the heat dissipation structure of the backlight device is also With a large volume, the design increases the manufacturing cost, and if the volume is too large, it makes it difficult to design the head-up display product under the limited space of the vehicle, so the volume, cost and design convenience have been constantly Thinking about the problem.
  • the present invention provides a backlight device that is incident on a plurality of optical components through a plurality of light sources to disperse the optical space required by the light source, thereby reducing the overall structure volume, thereby reducing equipment cost and improving. Design convenience and use this to provide a better heat dissipation structure for limited space.
  • An object of the present invention is to provide a backlight device that transmits light of a plurality of light sources through a plurality of optical channels to disperse a heat dissipation space of the light source to reduce the overall volume.
  • the present invention relates to a backlight device for providing a backlight to a display panel, the backlight device comprising a plurality of optical components and a plurality of backlights, each of the plurality of optical components having a light entrance and a light exit, respectively
  • the plurality of optical components of the plurality of optical components are oriented toward the display panel, the plurality of optical components extending from the plurality of light outlets to different sides of the display panel; the plurality of backlights respectively having a plurality of light sources, the plurality of The backlights are respectively disposed at the light entrances of the plurality of optical components, and the light of the plurality of light sources is incident on the plurality of optical components through the plurality of light entrances, and the plurality of optical components reflect the light to the plurality of light exits to gather Into this backlight.
  • the space required for the plurality of light sources is dispersed by the plurality of optical components, thereby reducing the overall volume.
  • Figure 1 is a perspective view showing an embodiment of a backlight device of the present invention
  • FIG. 2 is a schematic diagram showing the combination of an embodiment of a backlight device of the present invention.
  • FIG. 3 is another schematic diagram of another combination of an embodiment of a backlight device of the present invention.
  • FIG. 4 is a schematic view showing an optical path of an embodiment of a backlight device of the present invention.
  • Figure 5 is a perspective view showing another embodiment of the backlight device of the present invention.
  • FIG. 6 is a schematic diagram showing the combination of another embodiment of the backlight device of the present invention.
  • FIG. 7 is another schematic diagram of another combination of another embodiment of the backlight device of the present invention.
  • FIG. 8 is a schematic view showing an optical path of another embodiment of the backlight device of the present invention.
  • Figure 9 is a perspective view showing another embodiment of the backlight device of the present invention.
  • the backlight device 1 of the embodiment of the present invention includes a plurality of optical components 10 and a plurality of backlights 20.
  • Each of the optical components 10 of the present embodiment is provided with a body 12, a first optical component 14 and a second optical component 16.
  • the body 12 is provided with a light inlet 12a and a light exit 12b.
  • the backlight panel 20 of the present embodiment is provided with a plurality of light sources 22.
  • the backlight board 20 is disposed on the light inlet 12a of the body 12 of the optical component 10.
  • the first optical component 14 and the second optical component 16 are disposed in the body 12.
  • the first optical element 14 and the second optical element 16 of the embodiment may be mirrors mounted on the inside of the body 12; or a colloid or a coating may be applied on the inner surface of the body 12 to form a smooth surface as a mirror.
  • the first optical component 14 is disposed in the body 12 and located in an optical projection path L1 of the plurality of light sources 22 for reflecting the light L generated by the light sources 22, and the second optical component 16 is located at the first optical component 14.
  • the light L of the light source 22 is incident on the plurality of optical components 10 from the plurality of light inlets 12a, so that the plurality of optical components 10 reflect the light L to the plurality of light exits 12b and converge into the backlight BL.
  • the display panel structure 30 is located on a second optical reflection path L3 of the second optical component 16, that is, the display panel structure 30 is located at the light exit 12b, thereby passing the backlight BL through the light exit 12b.
  • the display panel structure 30 is a light outlet 12b disposed on the body 12 of the optical assembly 10.
  • the display panel structure 30 further includes an upper fixing member 34 and a lower fixing member 36, and the upper fixing member 34 has a first opening 34a,
  • the fixing member 36 has a second opening 36a.
  • the upper fixing member 34 and the lower fixing member sandwich the display panel 32, and the display panel 32 is fixed on the body 12, and the display area D is exposed through the first opening 34a (as shown in FIG. 2).
  • the incident area I of the light is exposed through the second opening 36a (as shown in FIG. 3 ). Therefore, the backlight BL of the embodiment is incident on the display panel 32 through the incident area I for the display panel 32 to be in the display area. D displays an image according to the light of the backlight BL.
  • the light sources 22 can be light emitting diodes, and can be high power light emitting diodes.
  • the backlight device 1 of the present invention may further include a plurality of heat dissipation structures 40 having a plurality of heat dissipation fins 44 .
  • the backlight panel 20 is embedded in the heat dissipation structure 40. Therefore, the perspective view shown in FIG. 1 does not disclose the structure of the backlight panel 20.
  • the backlight device 1 of the present embodiment can be used for a heads-up display, so that the display area D of the display panel 32 is generally disposed upward along a longitudinal direction X to project an image onto the windshield;
  • the heat dissipation structure 40 of the present embodiment is located above the backlight panel 20 in the longitudinal direction X. Therefore, the heat generated by the light source 22 and the backlight panel 20 is easily transmitted upward to the heat dissipation structure 40 according to the natural principle of heat flow upward conduction.
  • the heat dissipation performance of the optical component 10 is such that the backlight 20 and the light source 22 are dispersedly disposed, so that the heat dissipation space of the light source 22 is not concentrated, thereby further improving the heat dissipation performance.
  • the plurality of optical components 10 of the present embodiment extend to different sides of the display panel 32 in a plane perpendicular to the longitudinal direction X, and the plurality of light entrances 12a of the plurality of optical components 10 also face along the longitudinal direction X. Opened on.
  • a first light collecting cover 12c is disposed in the body 12 of the optical component 10.
  • the optical component 10 further includes a second light collecting cover 18 between the light inlet 12a of the body 12 and the backlight 20.
  • the first light-receiving cover 12c is located between the first optical element 14 and the second optical element 16, and the first light-receiving cover 12c is provided with a first optical channel P1 relative to the first optical component 14 and the second
  • the optical element 16 is disposed, and the second concentrating cover 18 is provided with a second optical channel P2, and the second optical channel P2 is opposite to the plurality of light sources 22 and the first optical element 14, such that the light entrance 12a and the backlight 20 are between The light divergence can be reduced between the first optical element 14 and the second optical element 16.
  • the plurality of backlights 20 of the backlight device 1 of the present embodiment are respectively located on two sides of the display panel structure 30, which are equivalent to the light source 22 of the dispersed backlight 20 in the plurality of optical components 10, and a plurality of The body 12 of the optical component 10 can extend to both sides of the display panel structure 30, so that the space of the backlight device 1 in the longitudinal direction X is not occupied, and the space required for light conduction is dispersed and extended, thereby allowing the backlight device 1 to operate optically. The required space for reflection is reduced, thereby reducing the overall volume of the backlight unit 1.
  • the heat dissipation structure 40 is disposed on the backlight board 20, and thus naturally conducts upward through the heat flow, and the heat dissipation space of the light source 22 is dispersed and not concentrated due to the dispersion extension design of the optical component 10, so that better heat dissipation performance can be obtained.
  • FIG. 5 to FIG. 8 are perspective views, combined schematic views, another combined schematic diagram and an optical path diagram of another embodiment of the backlight device of the present invention.
  • the backlight device 100 of the present embodiment is different from the backlight device 1 of the previous embodiment.
  • the optical component 10 of the backlight device 1 is provided with a first optical component 14 and a second optical component 16 in the body 12, and the backlight device 100
  • the optical component 110 is provided with only one optical component 114 in the body 112.
  • the backlight 20 and the display panel structure 30 of the previous embodiment are located on the same side of the optical component 10.
  • the backlight 120 and the display panel structure 130 of the present embodiment Located on different sides of the optical assembly 100, particularly the backlight 120 is disposed on one side of the optical assembly 110.
  • the backlight device 100 of the present embodiment includes a plurality of optical components 110 and a plurality of backlights 120 .
  • Each of the optical components 110 of the present embodiment is provided with a body 112 and an optical component 114.
  • the body 112 is provided with a light inlet 112a and a light outlet 112b.
  • the light inlet 12a and the light outlet 12b of the previous embodiment are located on the body 12.
  • the light entrance 112a and the light exit 112b of the present embodiment are located on different sides of the body 112.
  • the light entrances 112a of the plurality of optical components 110 of the present embodiment are opened in different directions perpendicular to the longitudinal direction X.
  • the plurality of optical components 110 of the present embodiment extend toward different sides of the display panel 132 in a plane perpendicular to the longitudinal direction X.
  • the backlight panel 120 of this embodiment is provided with a plurality of light sources 122.
  • the backlight 120 is disposed in the light inlet 112a of the body 112 of the optical component 110.
  • the optical component 114 is disposed in the body 112.
  • the backlight 120 of the embodiment is disposed on one side of the optical component 110, and thus the light source 122 of the backlight 120 It erects and emits light L toward the light entrance 112a.
  • the optical element 114 of the present embodiment may be a mirror mounted on the inside of the body 12; or a glue or a coating may be applied on the inner surface of the body 112 to form a smooth surface as a mirror, and the optical element 114 is disposed on the body 112.
  • An optical projection path L1a of the plurality of light sources 122 is disposed to reflect the light L generated by the light sources 22, and is conducted by the optical element 114 to the light exit 112b through an optical reflection path L2a to form a backlight.
  • the light source 122 and the light entrance 112a of the present embodiment are located on the side of the optical component 110, and the light L of the light source 122 is reflected only by one reflection, that is, only by the optical element 114 to the light exit 112b.
  • the display panel structure 130 is located on an optical reflection path L2a of the optical component 114, that is, the display panel structure 130 is located at the light exit 112b, thereby allowing the backlight device 100 to provide the backlight BL to the display panel structure 130.
  • the display panel 132 Moreover, the body 112 of the optical component 110 extends from the light exiting outlet 112b to the two sides of the display panel structure 130. Therefore, the light source inlet 112a of one side of the optical component 110 is connected to the plurality of backlights 120, so that the light source 122 The space required for light conduction is dispersed and extended, and the space required for the backlight 1 to operate optically is reduced.
  • the display panel structure 130 is a light outlet 112b disposed on the body 112 of the optical component 110.
  • the display panel structure 130 further includes an upper fixing member 134, and the upper fixing member 134 has a first opening 134a, and the upper fixing member 134 is displayed.
  • the panel 132 is fixed on the main body 112, and the display area D is exposed through the first opening 134a.
  • the display panel structure 130 is not provided with the lower fixing member. Therefore, the display panel 132 of the embodiment is based on the entire lower surface. 132a serves as an incident area of light.
  • the light sources 122 can be light emitting diodes, and can be high power light emitting diodes.
  • the heat dissipation structure 140 and the plurality of heat dissipation fins 144 of the present embodiment are located away from the backlight 120 , and the heat dissipation structure 140 may extend upward along the longitudinal direction X such that the light source 122
  • the heat generated by the backlight 120 is easily transmitted upward along the heat dissipation structure 140, and the dispersion extension design of the optical component 110 causes the backlight 120 and the light source 122 to be dispersed, thereby dispersing the heat dissipation space of the light source 122. Therefore, the heat dissipation performance is further improved.
  • a light collecting cover 112c is disposed in the body 112 of the optical component 110, and the light collecting cover 112c is provided with a light passage P, and the optical channel P2 is opposite to the plurality of light sources 122 and the optical component 114.
  • the light divergence can be reduced between the light entrance 112a and the backlight 120.
  • the backlight device 100 of the present invention can further reduce the heat dissipation structure 140 , that is, reduce the height of the heat dissipation structure 140 , thereby reducing the overall height of the backlight device 100 , and thus the backlight.
  • the overall design of the device 100 further reduces the volume occupied.
  • the backlight device 100 of the present invention can adjust the height of the heat dissipation structure 140 to increase, thereby increasing the heat dissipation area of the heat dissipation structure 140.
  • optical component described above is a combined structure, and the optical outlets of at least two optical components are combined into an output end of a backlight.
  • optical component of the present invention is not limited thereto, and the plurality of optical components may be integrally formed.
  • the two embodiments are exemplified by two optical components and two backlights, three or more optical components and a backlight can be disposed according to actual design requirements, and the present invention is not limited thereto.
  • the backlight device of the present invention is configured to provide a plurality of optical components corresponding to a plurality of backlights, and the light passages of the plurality of optical components are guided to the light incident light source at the light entrance for the light source to converge.
  • a display panel for the backlight is provided at the light exit.
  • Such an optical component disperses the space required for light conduction, thereby reducing the overall design volume of the backlight.

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Abstract

一种背光装置（1,100），其包含多个光学组件(10,110)与多个背光板(20,120)。多个背光板(20,120)分别设有光源(22,122)并设置于多个光学组件(10,110)的光线入口(12a,112a )，以经由光线入口(12a,112a )将光源(22,122)的光线入射至多个光学组件(10,110)，并反射至多个光学组件(10,110)的光线出口(12b,112b)，以形成一背光源(BL)，藉此提供背光源(BL)至一显示面板（32,132）。其中光学组件(10,110)向显示面板（32,132）的相异侧延伸，藉此分散光线路径的设置，以减少光线路径所需的空间。

Description

背光装置 技术领域
本发明是有关于一种背光装置，尤指一种提供背光源于显示面板的背光装置。
背景技术
随着光学、电子技术的进步，背光装置不断开发于各式生活应用上，例如：投影机、液晶显示器等，而现今业者更是在载具上针对驾驶开发出抬头显示器(Head Up Display)，一般简称HUD，抬头显示器目前已普遍应用于载具的驾驶辅助工具，其为提供驾驶不需要低头观看驾驶位置上的仪表板，就能在一般使用视线范围内看到所需的重要驾驶信息，可降低低头查看仪表的频率，避免注意力中断，或丧失对状态意识的掌握，以提高驾驶的安全性。所以抬头显示器可整合并取代传统上各式各样的仪表板，比如速度表、燃油表、状态警示灯等等。而，一般抬头显示器需要搭配背光装置，以显示影像。
然而，一般背光装置需与抬头显示器在有限的空间内设置，以提供光学成像，而一般背光装置需较多的空间运行光学反射，使得抬头显示器整体的体积增加，同时背光装置的散热结构亦是具有较大的体积，如此设计即让制作成本增加，且若占用体积过大时，其导致难以在车内空间有限的条件下设计抬头显示器产品，因此体积、成本与设计便利性一直是业者不断思考的问题。
综上所述，本发明就上述的技术缺点提出一种背光装置，其通过多个光源入射至多个光学组件，以分散光源所需的光学空间，因而降低整体结构体积，从而降低设备成本且提升设计便利性，并藉此针对有限的空间提供较佳的散热结构。
发明内容
本发明的一目的，在于提供一种背光装置，其通过多个光学组件传输多个光源的光线，以分散光源的反射路径所需的光学空间。
本发明的一目的，在于提供一种背光装置，其通过多个光通道传输多个光源的光线，而分散光源的散热空间，以减少整体的体积。
本发明有关于一背光装置，其用于提供一背光源至一显示面板，该背光装置包含多个光学组件与多个背光板，该多个光学组件分别具有一光线入口与一光线出口，该多个光学组件的该多个光线出口朝向该显示面板，该多个光学组件自该多个光线出口向该显 示面板的相异侧延伸；该多个背光板分别具有多个光源，该多个背光板分别设置于该多个光学组件的光线入口，该多个光源的光线经该多个光线入口入射至该多个光学组件，该多个光学组件反射该光线至该多个光线出口而聚成该背光源。藉此，通过该多个光学组件分散该多个光源所需的空间，因而减少整体的体积。
附图说明
图1：其为本发明的背光装置的一实施例的立体图；
图2：其为本发明的背光装置的一实施例的组合示意图；
图3：其为本发明的背光装置的一实施例的另一组合示意图；
图4：其为本发明的背光装置的一实施例的光学路径示意图；
图5：其为本发明的背光装置的另一实施例的立体图；
图6：其为本发明的背光装置的另一实施例的组合示意图；
图7：其为本发明的背光装置的另一实施例的另一组合示意图；
图8：其为本发明的背光装置的另一实施例的光学路径示意图；
图9：其为本发明的背光装置的另一实施例的立体图。
附图标号
1                 背光装置
10                光学组件
12                本体
12a               光线入口
12b               光线出口
12c               第一集光罩
14                第一光学元件
16                第二光学元件
18                第二集光罩
20                背光板
22                光源
30                显示面板结构
32                显示面板
34                上固定件
34a               第一开口
36                下固定件
36a               第二开口
40                散热结构
44                散热鳍片
100               背光装置
110               光学组件
112               本体
112a              光线入口
112b              光线出口
112c              第一集光罩
114               第一光学元件
116               第二光学元件
118               第二集光罩
120               背光板
122               光源
130               显示面板结构
132               显示面板
134               上固定件
134a              第一开口
136               下固定件
136a              第二开口
140               散热结构
144               散热鳍片
BL                背光源
D                 显示区域
I                 入射区域
L                 光线
L1                光线投射路径
L1a               光线投射路径
L2                第一光线反射路径
L2a               第一光线反射路径
L3                第二光线反射路径
P1                第一光通道
P2                第二光通道
X                 纵向方向
具体实施方式
请参阅图1至图4，其是本发明的背光装置的一实施例的立体图、组合示意图、另一组合示意图以及光学路径示意图。如图1至图4所示，本发明实施例的背光装置1包含多个光学组件10与多个背光板20。本实施例的每一光学组件10设有一本体12、一第一光学元件14与一第二光学元件16，本体12上设有光线入口12a与光线出口12b。本实施例的背光板20设有多个光源22。背光板20设置于光学组件10的本体12的光线入口12a，第一光学元件14与第二光学元件16设置于该本体12内。
本实施例的第一光学元件14与第二光学元件16可为安装于本体12的内部的反射镜；或者为在本体12的内侧表面涂布胶体或镀膜，以形成光滑面而作为反射镜，第一光学元件14设置于该本体12内并位于该多个光源22的一光学投射路径L1，以供反射该些光源22所产生的光线L，第二光学元件16位于第一光学元件14的一第一光学反射路径L2上，以供反射第一光学元件14所反射的光线，并由第二光学元件16将光线L反射至光线出口12b，以形成一背光源BL，也就是说该多个光源22的光线L自该多个光线入口12a入射至该多个光学组件10，以供该多个光学组件10将光线L反射至该多个光线出口12b，并汇聚成该背光源BL。
而，一显示面板结构30为位于第二光学元件16的一第二光学反射路径L3上，也就是显示面板结构30位于光线出口12b的位置上，藉此使背光源BL通过光线出口12b后传递至显示面板结构30的显示面板32，其中该些光学组件10的本体12可以自光线出口12b向显示面板结构30的两侧(相异侧)延伸，使光线传导所需的空间分散延伸，而减少背光装置1运行光学反射的所需空间。
此外，显示面板结构30为设置于光学组件10的本体12的光线出口12b，显示面板结构30进一步包含一上固定件34与一下固定件36，且上固定件34具有一第一开口34a，下固定件36具有一第二开口36a，上固定件34与下固定件夹设显示面板32，并将 显示面板32固定于本体12上，同时通过第一开口34a外露显示区域D(如图2所示)，并通过第二开口36a外露光线的入射区域I(如图3所示)，因此本实施例的背光源BL为通过入射区域I入射至显示面板32，以供显示面板32于显示区域D依据背光源BL的光线而显示影像。
于本发明的一实施例中，该些光源22可为发光二极管，更可为高功率的发光二极管。如图1至图4所示，本发明的背光装置1更可包含多个散热结构40，散热结构40具有多个散热鳍片44。背光板20为嵌设于散热结构40，因此如图1所示的立体图并未揭示背光板20的结构。再者，本实施例的背光装置1可用于抬头显示器，因此显示面板32的显示区域D一般而言是沿着一纵向方向X朝上设置，以向挡风玻璃投射影像；值得注意的是，本实施例的散热结构40于该纵向方向X位于背光板20之上，因此，光源22及背光板20所产生的热，容易依循热流向上传导的自然原理而向上传导至散热结构40，因而具较佳的散热效能，再者，光学组件10的分散延伸设计使得背光板20及其光源22分散设置，因而让光源22的散热空间分散不集中，因而进一步提升散热效能。本实施例的该多个光学组件10在垂直该纵向方向X的平面上向该显示面板32的相异侧延伸，该多个光学组件10的该多个光线入口12a亦沿该纵向方向X朝上开设。
此外，于本实施例中，光学组件10的本体12内设有一第一集光罩12c，而光学组件10于本体12的光线入口12a与背光板20之间更设有一第二集光罩18，而第一集光罩12c则是位于第一光学元件14与第二光学元件16之间，且第一集光罩12c内设有一第一光通道P1相对于第一光学元件14与第二光学元件16，而第二集光罩18设有一第二光通道P2，第二光通道P2相对于该多个光源22与该第一光学元件14，如此光线入口12a与背光板20之间以及第一光学元件14与第二光学元件16之间即可减轻光发散的情况。
由以上所述可知，本实施例的背光装置1的多个背光板20分别位于显示面板结构30的两侧，其相当于分散背光板20的光源22于多个光学组件10中，且多个光学组件10的本体12可以向显示面板结构30的二侧延伸，因此不会占用背光装置1于该纵向方向X上的空间，使光线传导所需的空间分散延伸，因而让背光装置1运行光学反射的所需空间减少，进而减少背光装置1的整体体积。再者，散热结构40设于背光板20之上，因而通过热流自然向上传导，且因光学组件10的分散延伸设计使得光源22的散热空间分散而不集中，可以获得较佳的散热效能。
请参阅图5至图8，其为本发明的背光装置的另一实施例的立体图、组合示意图、另一组合示意图与光学路径示意图。其中本实施例的背光装置100不同于前一实施例的 背光装置1，背光装置1的光学组件10为本体12内设有一第一光学元件14与一第二光学元件16，而背光装置100的光学组件110为本体112内仅设有一光学元件114，再者，前一实施例的背光板20与显示面板结构30位于光学组件10的同一侧，本实施例的背光板120与显示面板结构130位于光学组件100的不同侧，特别是背光板120设置于光学组件110的一侧。
承接上述，如图5至图8所示，本实施例的背光装置100包含多个光学组件110与多个背光板120。本实施例的每一光学组件110设有一本体112与一光学元件114，本体112上设有光线入口112a与光线出口112b，其中，前一实施例的光线入口12a与光线出口12b位于本体12的同一侧，而本实施例的光线入口112a与光线出口112b位于本体112的不同侧。本实施例的该多个光学组件110的光线入口112a朝向垂直该纵向方向X的相异方向开设。本实施例的该多个光学组件110在垂直该纵向方向X的平面上向该显示面板132的相异侧延伸。本实施例的背光板120设有多个光源122。背光板120设置于光学组件110的本体112的光线入口112a，光学元件114设置于该本体112内，本实施例的背光板120为设置于光学组件110的一侧，因此背光板120的光源122直立并朝向光线入口112a发出光线L。
本实施例的光学元件114可为安装于本体12的内部的反射镜；或者为在本体112的内侧表面涂布胶体或镀膜，以形成光滑面而作为反射镜，光学元件114设置于该本体112内并位于该多个光源122的一光学投射路径L1a，以供反射该些光源22所产生的光线L，并由光学元件114通过一光学反射路径L2a传导至光线出口112b，以形成一背光源BL，由此可知，本实施例的光源122与光线入口112a为位于光学组件110的侧边，且光源122的光线L仅为通过一次反射，即仅通过光学元件114反射至光线出口112b。
而，一显示面板结构130为位于光学元件114的一光学反射路径L2a上，也就是显示面板结构130位于光线出口112b的位置上，藉此让背光装置100提供背光源BL至显示面板结构130的显示面板132。再者，该些光学组件110的本体112为自光线出口112b向显示面板结构130的两侧延伸，因而经光学组件110的一侧的光线入口112a接设该多个背光板120，使光源122的光线传导所需的空间分散延伸，而减少背光装置1运行光学反射的所需空间。
此外，显示面板结构130为设置于光学组件110的本体112的光线出口112b，显示面板结构130进一步包含一上固定件134，且上固定件134具有一第一开口134a，上固定件134将显示面板132固定于本体112上，同时通过第一开口134a外露显示区域D， 而本实施例中，显示面板板结构130并未设置下固定件，因此本实施例的显示面板132为依据整个下表面132a作为光线的入射区域。
于本发明的一实施例中，该些光源122可为发光二极管，更可为高功率的发光二极管。如图5至图8所示，本实施例的散热结构140与多个散热鳍片144为位于远离背光板120的一侧，且散热结构140可以沿该纵向方向X朝上延伸，使得光源122及背光板120所产生的热，容易依循热流沿着散热结构140向上传导，且光学组件110的分散延伸设计使得背光板120及其光源122分散设置，因而让光源122的散热空间分散不集中，因而进一步提升散热效能。
此外，于本实施例中，光学组件110的本体112内设有一集光罩112c，而集光罩112c设有一光通道P，光通道P2相对于该多个光源122与该光学元件114，如此光线入口112a与背光板120之间即可减轻光发散的情况。
进一步地，如图5、图9所示，本发明的背光装置100更可将散热结构140作高度的修减，即减少散热结构140的高度，因而降低背光装置100整体的高度，因而在背光装置100的整体设计更可减少占用的体积。除此之外，本发明的背光装置100更可调整散热结构140的高度增加，因而增加散热结构140的散热面积。
以上所述的光学组件为组合式结构，为将至少二光学组件的光线出口组合成一背光源的输出端，但本发明的光学组件不限于此，更可将该多个光学组件一体成形。
虽然上述实施例中均以两个光学组件与两个背光板为例，然而视实际设计需求，亦可设置三个以上的光学组件与背光板，本发明并不限于此。
综上所述，本发明的背光装置为通过设置多个光学组件对应多个背光板，而通过该多个光学组件中的光通道导引于光线入口入射光源的光线，以供光源的光线汇聚于光线出口，进而提供背光源的显示面板。如此光学组件将光线传导所需的空间分散，因而减少背光装置的整体设计的体积。
由上述可知，本发明确实已经达于突破性的结构，而具有改良的发明内容，同时又能够达到产业上利用性与进步性，当符合专利法的规定，爰依法提出发明专利申请，恳请钧局审查委员授予合法专利权，至为感祷。

Claims (14)

  1. 一种背光装置，其特征在于，其提供一背光源于一显示面板，该背光装置包含：
    多个光学组件，其分别具有一光线入口与一光线出口，该多个光学组件的该多个光线出口朝向该显示面板，该多个光学组件自该多个光线出口向该显示面板的相异侧延伸；以及
    多个背光板，其分别具有多个光源，该多个背光板分别设置于该多个光学组件的光线入口，该多个光源的光线自该多个光线入口入射至该多个光学组件，以供该多个光学组件将光线反射至该多个光线出口，并汇聚成该背光源。
  2. 如权利要求1所述的背光装置，其特征在于，该多个光学组件分别包含：
    一本体；
    一第一光学元件，其设置于该本体内并位于该多个光源的一光学投射路径，以供反射该多个光源的光线；以及
    一第二光学元件，其设置于该本体内并位于该第一光学元件的一第一反射路径，以供反射该第一光学元件反射的光线至该显示面板。
  3. 如权利要求2所述的背光装置，其特征在于，更包含：
    一第一集光罩，设置于该本体，并位于该第一光学元件与该第二光学元件之间，该第一集光罩具有一第一光通道，该第一光通道相对于该第一光学元件与该第二光学元件；
    一第二集光罩，设置于该背光板与该第一光学元件之间，该第二集光罩具有一第二光通道，该第二光通道相对于该背光板与该第一光学元件。
  4. 如权利要求2所述的背光装置，其特征在于，该显示面板具有一显示区域，该显示区域是沿一纵向方向朝上设置，该多个光学组件的光线入口亦沿该纵向方向朝上开设。
  5. 如权利要求2所述的背光装置，其特征在于，更包含：
    一散热结构，其设置于该多个背光板，该散热结构具有多个散热鳍片。
  6. 如权利要求5所述的背光装置，其特征在于，该显示面板具有一显示区域，该显示区域是沿一纵向方向朝上设置，该散热结构位于该多个背光板的上方。
  7. 如权利要求1所述的背光装置，其特征在于，该多个光学组件分别包含：
    一本体；以及
    一光学元件，其设置于该本体内并位于该多个光源的一光学投射路径，以供反射该 多个光源的光线至该显示面板。
  8. 如权利要求7所述的背光装置，其特征在于，更包含：
    一集光罩，设置于该本体，并位于该背光板与该光学元件之间，该集光罩具有一光通道，该光通道相对于该多个光源与该光学元件。
  9. 如权利要求7所述的背光装置，其特征在于，该显示面板具有一显示区域，该显示区域是沿一纵向方向朝上设置，该多个光学组件的光线入口朝向垂直该纵向方向的相异方向开设。
  10. 如权利要求7所述的背光装置，其特征在于，更包含：
    一散热结构，其设置于该多个背光板，该散热结构具有多个散热鳍片。
  11. 如权利要求10所述的背光装置，其特征在于，该显示面板具有一显示区域，该显示区域是沿一纵向方向朝上设置，该散热结构沿该纵向方向朝上延伸。
  12. 如权利要求1所述的背光装置，其特征在于，该显示面板具有一显示区域，该显示区域是沿一纵向方向朝上设置，该多个光学组件在垂直该纵向方向的平面上向该显示面板的相异侧延伸。
  13. 如权利要求1所述的背光装置，其特征在于，该多个光学组件为组合式结构。
  14. 如权利要求1所述的背光装置，其特征在于，该多个光学组件为一体成形。
PCT/CN2018/072584 2017-01-13 2018-01-15 背光装置 WO2018130214A1 (zh)

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