CN110319375A - Lighting device - Google Patents
Lighting device Download PDFInfo
- Publication number
- CN110319375A CN110319375A CN201810297118.3A CN201810297118A CN110319375A CN 110319375 A CN110319375 A CN 110319375A CN 201810297118 A CN201810297118 A CN 201810297118A CN 110319375 A CN110319375 A CN 110319375A
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- CN
- China
- Prior art keywords
- light
- emitting surface
- lighting device
- guide plate
- light guide
- 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.)
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Classifications
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- 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
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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
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
-
- 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
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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
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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
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/004—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles
- G02B6/0043—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles provided on the surface of the light guide
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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
- F21V2200/00—Use of light guides, e.g. fibre optic devices, in lighting devices or systems
- F21V2200/20—Use of light guides, e.g. fibre optic devices, in lighting devices or systems of light guides of a generally planar shape
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
Abstract
The present invention relates to lighting area, in particular to a kind of light guide plate lighting device.A kind of lighting device provided by the invention, it is mounted on lighting device mounting portion, comprising: at least two pieces of light guide plates, light guide plate are respectively provided with a respective incidence surface and multiple light-emitting surfaces, at least two pieces of light guide plates are placed in same plane, and mutual incidence surface is oppositely arranged or is placed in same plane；Fixed bracket, combination connection light guide plate, and fixed bracket is connect with lighting device mounting portion；At least two LED chip mounting portions, correspond respectively to the incidence surface of each light guide plate, are set on fixed bracket in such a way that the multiple LED chips installed thereon are towards incidence surface；Optical point, it is located at the first light-emitting surface or the second light-emitting surface, LED chip is incident to the light portion inside light guide plate and reflexes to light-emitting surface, wherein, luminous flux in one side direction of the first light-emitting surface of light guide plate, different from the luminous flux in one side direction of the second light-emitting surface of light guide plate.
Description
Technical field
The present invention relates to lighting area, in particular to a kind of lighting device using light guide plate.
Background technique
LED (Light Emitting Diode, light emitting diode) is that one kind can convert electrical energy into the half of visible light
Conductor device.LED illumination product is a kind of semiconducting solid luminescent device.It is using solid semiconductor chip LED as hair
Luminescent material, in the semiconductors by carrier occur it is compound release superfluous energy photon caused to emit, directly issue it is red,
Yellow, blue, green, green, orange, purple, white light.LED light device has been developed in recent years new industry, only needs minimum
Electric current can excite the quite high light of brightness.
Universal with LED illumination product, simple basis illumination is no longer satisfied the demand of people, shine uniformly,
Favor of the LED lamp that moulding is unique, design sense is strong increasingly by market.
The lighting object that patent document CN206582710U discloses a kind of lower section that direction is located at ceiling issues the photograph of light
Funerary objects tool, Fig. 1 is the perspective view of the existing luminaire, shown referring to Fig.1, has light source portion and light guide plate, light guide plate tool
Have an interarea and end opposed with ceiling, surface feeding sputtering from the light that light source portion issues to light guide plate end, in the interarea of light guide plate
On be formed with recess portion, the recess portion for will from the light of surface feeding sputtering towards lighting object reflect, with realize to luminaire just under
The illumination of side.Specifically, the luminaire is directed towards the luminaire for issuing light positioned at the lighting object of the lower section of ceiling, shine
Bright object specifically ground or table top surface etc..
But in the luminaire of the above-mentioned prior art, the light that light source portion issues is after the reflection of light guide plate, Jin Jinke
To realize the illumination to area illumination object immediately below luminaire is located at, the region immediately below luminaire and range are left,
It then will appear dark space, cannot achieve that illumination zone is wider and directive illumination.
Summary of the invention
In order to solve it is existing in the prior art be only capable of to be located at luminaire immediately below region illuminate, can not be directed to
Directive this problem of illumination is realized in wider scope and space, and lighting device provided by the invention is mounted on lighting device peace
In dress portion comprising:
At least two pieces of light guide plates, light guide plate is respectively provided with a respective incidence surface and multiple light-emitting surfaces, light-emitting surface include
The first light-emitting surface close to lighting device mounting portion, the second light-emitting surface far from lighting device mounting portion, the first light-emitting surface of connection
With the side light-emitting surface of the second light-emitting surface, the first light-emitting surface and second light-emitting surface are parallel to each other, and at least two pieces of light guide plates are set
In in same plane, mutual incidence surface is oppositely arranged or is placed in same plane；
Fixed bracket, combination connection light guide plate, and fixed bracket is connect with lighting device mounting portion；
At least two LED chip mounting portions, correspond respectively to the incidence surface of each light guide plate, multiple with what is installed thereon
The mode of LED chip towards incidence surface is set on fixed bracket；
Optical point is located at the first light-emitting surface or the second light-emitting surface, light portion LED chip being incident to inside light guide plate
Reflex to the first light-emitting surface, the second light-emitting surface and side light-emitting surface；
Wherein, the luminous flux in one side direction of the first light-emitting surface of light guide plate is different to the second light-emitting surface of light guide plate one
Luminous flux in side direction.
In the present invention, the light that multiple LED chips issue enters inside light guide plate from the incidence surface of light guide plate, a part of light
When line is incident to the optical point of the first light-emitting surface or the second light-emitting surface, directly project or occur reflection and scattering and to each difference
Direction irradiation, and from light-emitting surface project, meanwhile, also can some light be first incident to after the light-emitting surface for being not provided with optical point again
The optical point of first light-emitting surface of light guide plate or the second light-emitting surface is reflexed to, and completes above-mentioned reflection and scattering, and then
One light-emitting surface and the second light-emitting surface form area source.Wherein, light is projected and is projected through reflecting with after scattering after optical point
Luminous flux it is different, so can control the luminous flux of light guide plate the first light-emitting surface and the second light-emitting surface by setting optical point,
Make its difference, to realize that light-out effect directionality of the lighting device in the first light-emitting surface or the second light-emitting surface direction is adjusted.
Because the first light-emitting surface and the second light-emitting surface of the invention is parallel to each other, and is equipped with connection the first light-emitting surface and second
The side light-emitting surface of light-emitting surface, therefore, some light that multiple LED chips issue can be projected from the side light-emitting surface, thus real
The irradiation being now different from the first light-emitting surface and the second light-emitting surface light direction, so that lighting device can not only go out by first
The area source that smooth surface and/or the second light-emitting surface are formed realizes the illumination in the first light-emitting surface of face or the second light-emitting surface of face direction,
Go out light using side light-emitting surface simultaneously, realizing has the illumination in the bigger region of directive property.
Luminous flux in the present invention in one side direction of the first light-emitting surface of light guide plate is greater than to the second light-emitting surface of light guide plate one
Luminous flux in side direction；Or the luminous flux on the first light-emitting surface of light guide plate direction, it is less than to the second light-emitting surface side of light guide plate
Upward luminous flux.
The injustice formed due to there are optical point on light-emitting surface can be all utilized into most light inside light guide plate
Sliding surface modification original path, so that the first light-emitting surface and the second light-emitting surface be made to have light injection.So passing through setting optical point
The luminous flux of the first light-emitting surface and the second light-emitting surface can be controlled, and keeps the light in one side direction of the first light-emitting surface of light guide plate logical
Amount, greater than the luminous flux in one side direction of the second light-emitting surface；Or the luminous flux on the first light-emitting surface of light guide plate direction, be less than to
Luminous flux on the second light-emitting surface of light guide plate direction.Meanwhile the beam axis of light guide plate side light source being made to be biased to the second light-emitting surface
One side direction of one side direction or the first light-emitting surface, the luminous flux of adjustment one side direction of the second light-emitting surface are more than or less than first and go out
The luminous flux of one side direction of smooth surface.By the setting of the optical point on light guide plate light-emitting surface, in combination with going out for side light-emitting surface
Light, so that the luminous flux in one side direction of luminous flux and the second light-emitting surface in one side direction of the first light-emitting surface is different, Ke Yigen
It is needed according to environment light distribution, realizes that the luminous flux towards lighting device mounting portion side is bigger, or far from lighting device mounting portion
The luminous flux of side is bigger, more improves the design freedom and light distribution directive property of lighting device.
Preferably, side light-emitting surface includes the third light-emitting surface opposite with incidence surface, and connects third light-emitting surface and enter light
4th light-emitting surface in face.
It is issued and is entered in the light inside light guide plate by LED chip, some light is directly from the plane with incidence surface face
After i.e. third light-emitting surface is projected or is totally reflected inside light guide plate, and projected from third light-emitting surface.Meanwhile by LED chip
The scattering change direction for entering some light inside light guide plate by optical point is issued, and is projected from the 4th light-emitting surface, thus
Being formed as side light-emitting surface includes polygon multidirectional light-emitting surface of third light-emitting surface and the 4th light-emitting surface, be can be realized more
The directive property in multi-direction and bigger region illuminates.
Preferably, at least part of third light-emitting surface or the 4th light-emitting surface is curved surface.
Curved surface is partially or completely set by third light-emitting surface or the 4th light-emitting surface, can should be gone out by curved surface increase
The area of smooth surface, luminous flux also increase accordingly, meanwhile, the design of curved surface is while beauty but also each side light-emitting surface
It shines more uniform, the light distribution on the light-emitting surface direction of side can be better achieved.
Preferably, lighting device provided by the invention, further include be set between at least two pieces of light guide plates, and with fixed bracket
The light out part of connection.The light out part includes at least one LED chip group, deviates from illumination with the multiple LED chips court installed thereon
The mode in device mounting portion direction is arranged.
Light out part is capable of providing the light source different from light guide plate light extraction mode, realizes that multiplicity dissolves the demand of light, simultaneously will
It is set between at least two pieces of light guide plates, and multiple LED chips in light out part LED chip group are faced away from lighting device installation
The mode in portion is arranged, and makes the light projected from light out part, can reinforce lighting device and correspond to fixation between two pieces of light guide plates
The illuminating effect of holder part, so that lighting device integrally goes out light symmetrically and evenly.Light out part is fitted to each other with light guide plate, Ke Yiman
The control and allotment of light-out effect on sufficient different directions.
Preferably, every piece of light guide plate corresponds at least one LED chip mounting portion, each LED chip mounting portion respectively with control
Unit connection processed.
LED chip mounting portion, the switch of the adjustable LED chip installed thereon and brightness are controlled by control unit, is made
It is adjustable into the light inside light guide plate, to realize the control to light guide plate respectively, difference is formed it into according to usage scenario
Light distribution.
Preferably, side light-emitting surface is inclined-plane, and the angle of side light-emitting surface and the first light-emitting surface is less than side light-emitting surface
It is greater than side light-emitting surface and the second light-emitting surface with the angle of the angle or side light-emitting surface of the second light-emitting surface and the first light-emitting surface
Angle.
Inclined-plane is set by side light-emitting surface, adjustable side surface light-emitting surface forms the light direction of area source, is formed simultaneously
The light-emitting area of side light-emitting surface can be increased for inclined-plane, accordingly enhance the illuminating effect of side light-emitting surface.Make side light-emitting surface
It is less than the angle of side light-emitting surface and the second light-emitting surface with the angle of the first light-emitting surface, then increases far from lighting device mounting portion
One side direction of the second light-emitting surface on luminous flux, strengthen the illuminating effect away from lighting device mounting portion side.Similarly, make
The angle of side light-emitting surface and the first light-emitting surface is greater than the angle of side light-emitting surface and the second light-emitting surface, then increases by near lightning
Luminous flux on first light-emitting surface direction of device mounting portion, realizes the difference tune to light-out effect on light guide plate different directions
Control.
Preferably, the angle of incidence surface and the 4th light-emitting surface is chamfering.
Since the luminous flux on the light-emitting surface unit area of side is larger, set the angle of incidence surface and the 4th light-emitting surface to
Chamfering, is capable of increasing the light-emitting area of the 4th light-emitting surface, enhances lighting device to a certain extent on the 4th light-emitting surface direction
Illuminating effect, it is important that make lighting device be provided with to incidence surface direction project light, realize the finger of more direction
Tropism illumination.Meanwhile the light direction of the part can be also adjusted by adjusting the tilt angle of chamfering, to meet different match
Light scheme.In addition, the setting of chamfering is also convenient for light guide plate and support bracket fastened assembly connection.
Preferably, the incidence surface of muti-piece light guide plate is placed in same plane, and one end setting of the close incidence surface of light guide plate
For the curved portion that light can be made to be totally reflected in the part.
The incidence surface of muti-piece light guide plate is placed in same plane, the LED core corresponding to each light guide plate incidence surface can be made
Piece mounting portion is generally aligned in the same plane, and can be arranged on same substrate, is reduced parts count and is reduced technology difficulty, section
About production cost, at the same for ensure light that LED chip generates can in light guide plate multiple reflections, light guide plate is close to entering light
The one end in face is set as curved portion, and light guide plate is allow effectively to go out light.
Preferably, on LED chip mounting portion, it is equipped with metallic heat radiating plate.
The concentrated setting of LED chip can be such that LED chip mounting portion temperature increases, therefore be arranged on LED chip mounting portion
The heat that LED chip shines and generates is shed in time, avoids LED chip mounting portion due to temperature is excessively high by metallic heat radiating plate
Caused by damage, improve the service life of lighting device.
Preferably, LED chip mounting portion is PCB.
PCB can facilitate permutation and combination LED chip, can form different rows on demand using the circuit design printed on PCB
The regionality manipulation into brightness is realized in the LED chip light emitting region of column.
Preferably, muti-piece light guide plate is to utilize polymethyl methacrylate (PMMA), synthetic resin, propylene, polycarbonate
(PC), polyester, polyolefin or glass are made.
The light that LED chip issues is incident to inside light guide plate from the plane of incidence, and transmission loss is due to light guide panel material
Itself the degree of absorption of light is determined, thus using the high medium such as polymethyl methacrylate (PMMA) of light transmittance,
Synthetic resin, propylene, polycarbonate (PC), polyester, polyolefin or glass etc., can reduce loss of the light in transmission process,
The sufficiently light-out effect of enhancing lighting device.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the luminaire of the prior art；
Fig. 2 is the lighting device overall structure diagram of first embodiment of the invention；
Fig. 3 is the lighting device partial structural diagram of first embodiment of the invention；
Fig. 4 is the lighting device overall structure diagram of first embodiment of the invention；
Fig. 5 is the lighting device partial structural diagram of second embodiment of the invention；
Fig. 6 is the lighting device partial structural diagram of third embodiment of the invention；
Fig. 7 is the lighting device partial structural diagram of fourth embodiment of the invention；
Fig. 8 is the lighting device partial structural diagram of fifth embodiment of the invention；
Fig. 9 is the lighting device partial structural diagram of sixth embodiment of the invention；
Figure 10 is the lighting device partial structural diagram of seventh embodiment of the invention.
Description of symbols
A. lighting device, 1. light guide plates, 11. incidence surfaces, 12. light-emitting surfaces, 121. first light-emitting surfaces, 122, second go out light
Face, the side 12a. light-emitting surface, 123. third light-emitting surfaces, 124. the 4th light-emitting surfaces, 2. fixed brackets, 3.LED mounting portion, 4. optics
Point, 5. light out part, 6. curved portions.
Specific embodiment
The present invention is described in detail combined with specific embodiments below.Following embodiment will be helpful to the technology of this field
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill of this field
For personnel, without departing from the inventive concept of the premise, various modifications and improvements can be made.These belong to the present invention
Protection scope.
Embodiment one
The first embodiment of the present invention provides a kind of lighting device, and Fig. 2 is the lighting device of first embodiment of the invention
Overall structure diagram, Fig. 3 are the lighting device partial structural diagrams of first embodiment of the invention.Referring to shown in Fig. 2-Fig. 3,
Lighting device A provided in this embodiment is mounted on lighting device mounting portion, including two pieces of light guide plates 1, light guide plate 1 are respectively provided with
A respective incidence surface 11 and multiple light-emitting surfaces 12, light-emitting surface include the first light-emitting surface 121 close to lighting device mounting portion,
The second light-emitting surface 122 far from lighting device mounting portion, the side for connecting the first light-emitting surface 121 and the second light-emitting surface 122 go out light
Face 12a, the first light-emitting surface 121 and the second light-emitting surface 122 are parallel to each other, and incidence surface 11 is perpendicular to the first light-emitting surface 121 and
Two light-emitting surfaces 122.Two pieces of light guide plates 1 are placed in same plane, and mutual incidence surface 11 is oppositely arranged, and pass through fixed 2 groups of bracket
Conjunction is connected to lighting device mounting portion, and is symmetrical arranged in fixed 2 two sides of bracket, and fixed bracket 2 is equipped with and each light guide plate 1
Corresponding card slot, light guide plate 1 engage with card slot respectively, realize that light guide plate 1 is detachably connected with support bracket fastened, facilitate illumination
The assembling and replacement of device.A LED chip mounting portion 3, this reality are respectively equipped with corresponding to two pieces of respective incidence surfaces 11 of light guide plate 1
Applying LED chip mounting portion in example is PCB, and the multiple LED chips 31 installed thereon are respectively facing corresponding incidence surface 11, and
Two LED chip mounting portions 3 are all set on fixed bracket.First light-emitting surface 121 is equipped with optical point 4, can destroy LED chip
31 are incident to the total reflection of 1 internal light of light guide plate, and light is made to go out light from the first light-emitting surface 121, the second light-emitting surface 122 and side
Face 12a is projected, and the luminous flux in 121 1 side direction of the first light-emitting surface of light guide plate, is different to the second light-emitting surface of light guide plate
Luminous flux in 122 1 side directions.
After the light that multiple LED chips 31 issue is from incidence surface 11 into 1 inside of light guide plate, portions incident to optical point 4
Light be destroyed due to total reflection and directly projected from the first light-emitting surface 121, or reflection occurs with scattering and to each difference
Direction irradiation is projected from the second light-emitting surface 122 after multiple reflection and scattering and side light-emitting surface 12a is projected, meanwhile,
Understand some light and is first incident to the light for reflexing to the first light-emitting surface 121 after the second light-emitting surface 122 for being not provided with optical point 4 again
Point is learned, and completes above-mentioned reflection and scattering, and then forms area source in the first light-emitting surface 121 and the second light-emitting surface 122.Pass through
Setting optical point 4 simultaneously adjusts its shape, and the parameters such as size and distribution density make some light respectively from the first light-emitting surface 121 and the
Two light-emitting surfaces 122 project, while the second light-emitting surface 122 being made to have the luminous flux bigger than the first light-emitting surface 121, and are formed brighter
Area source, can also be for example, by slightly adjusting the relative position of LED chip and light guide plate, such as utilize side wall
The modes such as reflective, so that the beam axis of light guide plate side light source is biased to one side direction of the second light-emitting surface, then the second light-emitting surface one
The luminous flux of side direction is greater than the luminous flux of one side direction of the first light-emitting surface, to realize lighting device in 121 side of the first light-emitting surface
To and 122 direction of the second light-emitting surface emitting brightness adjust, can have the area illumination of directive property.
In the present embodiment, side light-emitting surface 12a further includes third light-emitting surface 123 and the 4th light-emitting surface 124.Third light-emitting surface
For with incidence surface 11 to pair plane, the 4th light-emitting surface 124 be connect third light-emitting surface 123 and incidence surface 11 two planes.
Enter in the light inside light guide plate 1 from incidence surface, there are a part of light directly from the plane opposite with incidence surface 11 i.e.
Three light-emitting surfaces 123 project after projecting or being totally reflected inside light guide plate from third light-emitting surface 123, and also some light passes through
The scattering for crossing optical point 4 changes direction, and projects from the 4th light-emitting surface 124, so that being formed as side light-emitting surface 12a includes the
Polygon multidirectional light-emitting surface of three light-emitting surfaces 123 and the 4th light-emitting surface 124 is realized and is different from the first light-emitting surface 121 and the
Irradiation on two light-emitting surfaces, 122 light direction, so that lighting device passes through 122 shape of the first light-emitting surface 121 and/or the second light-emitting surface
At area source, in combination with side light-emitting surface go out light so that the luminous flux and second in one side direction of the first light-emitting surface go out
Luminous flux in one side direction of smooth surface is different, can be realized according to environment light distribution needs towards lighting device mounting portion side
Luminous flux is bigger, or the luminous flux far from lighting device mounting portion side is bigger, can be realized more direction and bigger region
Directive property illumination, more improve the design freedom and light distribution directive property of lighting device.
In addition, LED chip mounting portion 3 is equipped with metallic heat radiating plate, the concentrated setting of LED chip 31 can be such that LED chip pacifies
3 temperature of dress portion increases, therefore metallic heat radiating plate is arranged on LED chip mounting portion 3, LED chip 31 is shone and the heat that generates
Amount sheds in time, damage caused by avoiding LED chip mounting portion 3 due to temperature is excessively high, and improve lighting device uses the longevity
Life.
LED chip mounting portion 3 corresponding with two pieces of light guide plates 1, connect with control unit respectively, passes through control unit
LED chip mounting portion 3 is controlled, adjustable 31 brightness of LED chip installed thereon, the light for making to enter inside light guide plate is variable,
To realize the control to each light-emitting surface luminous flux of light guide plate, different area sources is formed it into.
1 material of light guide plate of lighting device provided in this embodiment be polymethyl methacrylate (PMMA), synthetic resin,
The high resin objects of light transmittances such as propylene, polycarbonate (PC), polyester, polyolefin or glass reduce damage of the light in transmission process
Consumption, is sufficiently converted into area source for the light projected from LED chip 31, and effectively dissipate.
Lighting device provided in this embodiment can be used as ceiling lamp use, and being fixed, be connected to can be from the wall of top
Top provides the area source towards all directions, while mainly strengthening the brightness provided downwards, meets routine use institute
It needs.Lighting device provided in this embodiment is alternatively arranged as wall lamp use, as shown in figure 4, second far from side wall goes out at this time
Smooth surface 122 is formed with optical point 4, can be improved the luminous flux of the first light-emitting surface 121 close to wall, enhances the illumination effect of wall
Lighting device can also be obliquely installed by fruit, to realize the difference illuminating effect of different wall areas.In addition, the present embodiment be with
It is illustrated for two pieces of light guide plates, the structure that muti-piece light guide plate can also be described according to the present embodiment implements the present invention.
Embodiment two
The second embodiment of the present invention provides a kind of lighting device, and Fig. 5 is the lighting device of second embodiment of the invention
Overall structure diagram.Second embodiment is the further improvement to first embodiment, is mainly theed improvement is that, in the present invention
Second embodiment in, referring to Figure 5, lighting device A further includes the light out part 5 being set between two pieces of light guide plates 1, out
Light portion 5 is generally rectangular shaped, on length direction quite with light guide plate 1, and connect with fixed bracket 2, while keeping lighting device
Symmetric design.
Light out part includes a LED chip group, and LED chip group is arranged on fixed bracket along 5 length direction of light out part,
Multiple LED chips 31 of upper installation are arranged towards away from lighting device mounting portion direction, and light out part 5 is made to face away from lighting device peace
The light-emitting directions in dress portion reinforce the illumination effect that lighting device A corresponds to fixed 2 part of bracket between two pieces of light guide plates 1 with this
Fruit, so that lighting device A integrally goes out light symmetrically and evenly.Light out part 5 further includes an arc lampshade, and the light inlet of lampshade can wrap
Covering all LED chip groups makes it not leak outside, and LED chip group is made to be effectively protected, while the light for also generating LED chip group
Light source is provided downwards in more evenly soft mode.Transparent PC shell can be selected in lampshade, and light transmission is high, it can be seen that internal
LED chip group, also can be selected translucent frosted shell, light appear it is milder, it is different from 1 light extraction mode of light guide plate
It is that the light that light out part 5 issues is more dispersed, has on direction certain restricted, the direction of multiple 31 directions of LED chip is
For the light direction of light out part 5, as ceiling lamp in use, be capable of larger area illuminates downwards certain area.5 energy of light out part
It is enough that the area source different from 1 light extraction mode of light guide plate is provided, realize that multiplicity dissolves the demand of light, while it is set at least two pieces
Can make lighting device between light guide plate is integrally in symmetric design, eliminates the dark space for corresponding to fixed 2 part of bracket, so that illumination
Integrally light is more evenly comfortable out by device A, and light out part 5 is fitted to each other with light guide plate 1, can satisfy light-out effect on different directions
Control and allotment.
Embodiment three
The third embodiment of the present invention provides a kind of lighting device, and Fig. 6 is the lighting device of third embodiment of the invention
Partial structural diagram.3rd embodiment is the further improvement to first embodiment and second embodiment, main improvements
It is, in the third embodiment of the present invention, referring to shown in Fig. 6, third light-emitting surface 123 is inclined-plane, and the inclined-plane goes out with first
The angle of smooth surface 121 is less than the angle on the inclined-plane and the second light-emitting surface 122.
Go out into light a part inside light guide plate 1 by the diffusing reflection of optical point from the first light-emitting surface 121, second
Smooth surface 122, side light-emitting surface 12a are projected, and are formed as the area source that shines, meanwhile, into there are one in the light inside light guide plate 1
Some light is directly projected from the plane opposite with incidence surface 11, that is, third light-emitting surface 123 without optical point 4, or in light guide plate
1 inside is projected after being totally reflected from third light-emitting surface 123, therefore the area source that third light-emitting surface 123 is formed includes simultaneously light
The light projected via 4 diffusing reflection of optical point, the light for directly projecting with light and being projected through total reflection, so that third goes out
The luminous flux of 123 unit area of smooth surface compared with 122 unit area of other sides light-emitting surface 12a and the second light-emitting surface luminous flux more
Greatly.
It sets third light-emitting surface 123 to from 121 to the second light-emitting surface 122 of the first light-emitting surface gradually to inside light guide plate 1
Inclined smooth ramp has adjusted the light direction that third light-emitting surface 123 forms area source, as on wall at the top of being installed on
Ceiling lamp is in use, more lights can be provided downwards, to meet needed for routine use.Side can be increased for inclined-plane by being formed simultaneously
The light-emitting area of face light-emitting surface 12a, accordingly enhances the illuminating effect of side light-emitting surface 12a.
In the present embodiment, the angle that third light-emitting surface 123 is set as itself and the first light-emitting surface 121 is gone out less than it with second
The angle of smooth surface 122,122 luminous flux of the second light-emitting surface itself are slightly reduced, but increase far from lighting device mounting portion the
Luminous flux on two light-emitting surfaces, 122 direction strengthens the illuminating effect away from lighting device mounting portion side, the 4th light-emitting surface
124 can also be arranged according to this.Similarly, make the angle of side light-emitting surface 12a and the first light-emitting surface 121 be greater than side light-emitting surface 12a with
The angle of second light-emitting surface 122 then increases the luminous flux on the first light-emitting surface direction of lighting device mounting portion, realizes
The difference of light-out effect on light guide plate different directions is regulated and controled.
Example IV
The fourth embodiment of the present invention provides a kind of lighting device, and Fig. 7 is the lighting device of fourth embodiment of the invention
Partial structural diagram.Fourth embodiment is the further improvement to first embodiment to 3rd embodiment, main improvements
It is, in the fourth embodiment of the present invention, referring to shown in Fig. 7, the angle of incidence surface 11 and the 4th light-emitting surface 124 is chamfering.
Since the luminous flux on the light-emitting surface 12a unit area of side is larger, set incidence surface 11 and the angle of the 4th light-emitting surface 124 to
Chamfering, slightly reduces the area of the first light-emitting surface 121 and the second light-emitting surface 122, but is capable of increasing shining for the 4th light-emitting surface
Area enhances illuminating effect of the lighting device on the 4th light-emitting surface direction, it is important that make lighting device to a certain extent
It is provided with the light projected to 11 direction of incidence surface, realizes the directive property illumination of more direction.Meanwhile also adjustable chamfering
Fillet surface is gradually reduced from 121 to the second light-emitting surface 122 of the first light-emitting surface in tilt angle, goes out fillet surface direction with second
The consistent light-emitting directions of 122 light direction of smooth surface, to meet different light distribution schemes.Similarly, 1 side light-emitting surface 12a of light guide plate
Between angle can all be arranged according to this.In addition, the setting of chamfering reduces the area of 1 one end of light guide plate, convenient for light guide plate 1 and fix
The assembly connection of bracket 2.
Embodiment five
The fifth embodiment of the present invention provides a kind of lighting device, and Fig. 8 is the lighting device of fifth embodiment of the invention
Partial structural diagram.5th embodiment is the further improvement to first embodiment to fourth embodiment, main improvements
It is, in the fifth embodiment of the present invention, referring to shown in Fig. 8, the incidence surface 11 of two pieces of light guide plates is placed in same plane, and leads
One end of the close incidence surface 11 of tabula rasa 1 is configured such that the curved portion 6 that light is totally reflected in the part.Light guide plate 1 enters light
Face 11 is arranged in parallel with the first light-emitting surface 121 of light guide plate 1 and the second light-emitting surface 122, and curved portion 6 connects incidence surface 1 and first
Light-emitting surface 121 and the second light-emitting surface 122.The light that the radian of curved portion 6 should be able to ensure to be entered by incidence surface 11 is in the part
Total reflection, and enter inside the light guide plate 1 between the first light-emitting surface 121 and the second light-emitting surface 122, send out lighting device effectively
Light.
The incidence surface of two pieces of light guide plates 1 is placed in same plane, the LED corresponding to each 1 incidence surface 11 of light guide plate can be made
Chip mounting portion 3 is generally aligned in the same plane, and the multiple LED chips 31 installed thereon are arranged towards same direction, can be arranged in
On same substrate, reduce parts count, when production can be integrally formed, while the metal that LED chip mounting portion is equipped with dissipates
Hot plate can distribute heat towards same direction, more efficiently reduce the temperature of LED chip mounting portion 3, and LED chip is installed
The technology difficulty in portion reduces, and has saved production cost.
Embodiment six
The sixth embodiment of the present invention provides a kind of lighting device, and Fig. 9 is the lighting device of sixth embodiment of the invention
Partial structural diagram.Sixth embodiment is the further improvement to first embodiment to the 5th embodiment, main improvements
It is, in the sixth embodiment of the present invention, referring to shown in Fig. 9, lighting device includes three pieces of arc light guide plates 1, and light guide plate 1
Third light-emitting surface 123 and incidence surface 11 be curved surface, three pieces of light guide plates 1 are placed in same plane, are spliced into annulus shape, respectively lead
The third light-emitting surface 123 of tabula rasa 1 is spliced into external great circle, and the incidence surface 11 of each light guide plate 1 is spliced into internal roundlet, simultaneously
The LED chip mounting portion 3 being correspondingly arranged with each 1 incidence surface 11 of light guide plate is also configured as curved surface, the multiple LED chips installed thereon
31 are respectively facing corresponding incidence surface 11, and there are gaps between each light guide plate 1, enable the area source of the 4th light-emitting surface 124
Enough expose to outside.In addition, the incidence surface 11 of each light guide plate 1 is spliced into the region of inner circle and is also provided with and this region shape
Same or about light out part 5, different light extraction modes is provided for lighting device.
Luminous flux is maximum on 123 unit area of third light-emitting surface opposite with incidence surface 11, and third light-emitting surface 123 is arranged
It is capable of increasing the area of the light-emitting surface for curved surface, while luminous flux also increases accordingly, realizes that the corresponding difference of different light-emitting surfaces goes out
The adjusting of illuminating apparatus light distribution on light direction.
Embodiment seven
The seventh embodiment of the present invention provides a kind of lighting device, and Figure 10 is the lighting device of seventh embodiment of the invention
Partial structural diagram.7th embodiment is the further improvement to first embodiment to the 5th embodiment, main improvements
It is, in the seventh embodiment of the present invention, referring to Fig.1 shown in 0, lighting device includes the identical rectangular light guide plate of four block sizes
1, four pieces of light guide plates 1 are in the same plane and are spliced into rectangle, and each light guide plate 1 face relative to each other is respective incidence surface
11, all be equipped with LED chip mounting portion 3 be corresponding to it, the multiple LED chips 31 installed thereon be respectively facing it is corresponding enter light
Face 11.At this point, side light-emitting surface is all third light-emitting surface 123, by the third light-emitting surface 123 of each light guide plate 1 and incidence surface 11
Angle be set as chamfering, the illuminating effect of third light-emitting surface 123 can be enhanced.
Luminous flux is maximum on 123 unit area of third light-emitting surface opposite with incidence surface 11, and every piece of light guide plate 1 is respectively provided with two
A incidence surface 11 respectively corresponds the third light-emitting surface 123 of two different directions, enhances the photograph of lighting device in different directions
Obvious results fruit.
Claims (14)
1. a kind of lighting device is mounted on lighting device mounting portion characterized by comprising
At least two pieces of light guide plates, the light guide plate are respectively provided with a respective incidence surface and multiple light-emitting surfaces, the light-emitting surface
Including the first light-emitting surface close to lighting device mounting portion side, the second light-emitting surface far from lighting device mounting portion side, even
Connect the side light-emitting surface of first light-emitting surface Yu second light-emitting surface, first light-emitting surface and second light-emitting surface that
This is parallel, and at least two pieces of light guide plates are placed in same plane, and mutual incidence surface is oppositely arranged or is placed in same plane；
Fixed bracket, combination connects the light guide plate, and the fixed bracket is connect with lighting device mounting portion；
At least two LED chip mounting portions correspond respectively to the incidence surface of each light guide plate, more with what is installed thereon
The mode of a LED chip towards the incidence surface is set on the fixed bracket；
Optical point is located at first light-emitting surface or second light-emitting surface, the LED chip is incident in the light guide plate
The light portion in portion reflexes to first light-emitting surface, second light-emitting surface and the side light-emitting surface；
Wherein,
The light that the LED chip issues, the luminous flux in one side direction of the first light-emitting surface of Xiang Suoshu light guide plate, is different to described
Luminous flux in one side direction of the second light-emitting surface of light guide plate.
2. lighting device according to claim 1, which is characterized in that in one side direction of the first light-emitting surface of Xiang Suoshu light guide plate
Luminous flux, greater than the luminous flux in one side direction of the second light-emitting surface of light guide plate.
3. lighting device according to claim 1, which is characterized in that in one side direction of the first light-emitting surface of Xiang Suoshu light guide plate
Luminous flux, less than the luminous flux in one side direction of the second light-emitting surface of light guide plate.
4. lighting device according to claim 1, which is characterized in that the side light-emitting surface includes and the incidence surface phase
Pair third light-emitting surface, and the 4th light-emitting surface of connection the third light-emitting surface and the incidence surface.
5. lighting device according to claim 4, which is characterized in that the third light-emitting surface or the 4th light-emitting surface are at least
Part is curved surface.
6. lighting device according to claim 1-5, which is characterized in that it further include light out part, the light out part
Between at least two pieces of light guide plates, and it is connect with the fixed bracket,
The light out part includes at least one LED chip group, deviates from the lighting device with the multiple LED chips court installed thereon
The mode in mounting portion direction is arranged.
7. lighting device according to claim 1-5, which is characterized in that every piece of light guide plate corresponding at least one
A LED chip mounting portion, each LED chip mounting portion are connect with control unit respectively.
8. lighting device according to claim 1-5, which is characterized in that the side light-emitting surface is inclined-plane, and
The angle of the side light-emitting surface and first light-emitting surface is less than the angle of the side light-emitting surface and second light-emitting surface
Or the side light-emitting surface is greater than the folder of the side light-emitting surface and second light-emitting surface with the angle of first light-emitting surface
Angle.
9. lighting device according to claim 4, which is characterized in that the angle of the incidence surface and the 4th light-emitting surface
For chamfering.
10. lighting device according to claim 1, which is characterized in that the incidence surface of the muti-piece light guide plate is placed in same
Plane, and one end close to the incidence surface of the light guide plate is configured such that the curved portion that light is totally reflected in the part.
11. lighting device according to claim 1 or 2, which is characterized in that on the LED chip mounting portion, be equipped with metal
Heat sink.
12. lighting device according to claim 1 or 2, which is characterized in that the fixed branch is provided with multiple card slots, institute
Muti-piece light guide plate is stated to engage with card slot respectively.
13. lighting device according to claim 1-5, which is characterized in that the LED chip mounting portion is PCB.
14. lighting device according to claim 1-5, which is characterized in that the muti-piece light guide plate is using poly-
Methyl methacrylate (PMMA), synthetic resin, propylene, polycarbonate (PC), polyester, polyolefin or glass are made.
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| CN201810297118.3A CN110319375B (en) | 2018-03-30 | 2018-03-30 | Lighting device |
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| CN201810297118.3A CN110319375B (en) | 2018-03-30 | 2018-03-30 | Lighting device |
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| CN110319375B CN110319375B (en) | 2022-02-15 |
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