CN102109132A - LED (Light Emitting Diode) light source assembly applied to low-order lighting and LED lamp applied to low-order lighting - Google Patents
LED (Light Emitting Diode) light source assembly applied to low-order lighting and LED lamp applied to low-order lighting Download PDFInfo
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- CN102109132A CN102109132A CN2010106233365A CN201010623336A CN102109132A CN 102109132 A CN102109132 A CN 102109132A CN 2010106233365 A CN2010106233365 A CN 2010106233365A CN 201010623336 A CN201010623336 A CN 201010623336A CN 102109132 A CN102109132 A CN 102109132A
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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
- F21V5/00—Refractors for light sources
- F21V5/04—Refractors for light sources of lens shape
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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
- F21V5/00—Refractors for light sources
- F21V5/08—Refractors for light sources producing an asymmetric light distribution
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
- G02B19/0004—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed
- G02B19/0028—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed refractive and reflective surfaces, e.g. non-imaging catadioptric systems
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
- G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
- G02B19/0047—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source
- G02B19/0061—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source the light source comprising a LED
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- 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
- G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
- G02B27/0938—Using specific optical elements
- G02B27/095—Refractive optical elements
- G02B27/0955—Lenses
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
- F21W2131/10—Outdoor lighting
- F21W2131/103—Outdoor lighting of streets or roads
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
- F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2105/00—Planar light sources
- F21Y2105/10—Planar light sources comprising a two-dimensional array of point-like light-generating elements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
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- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The invention discloses an LED (Light Emitting Diode) light source assembly applied to low-order lighting and an LED lamp applied to low-order lighting, wherein the LED light source assembly comprises multiple LED light source units which are installed on the same LED substrate and are in an array assignment mode; each LED light source unit comprises a light source and a lens which is covered on the light source; the lens is provided with a concave incidence surface for the incidence of light rays of the light source and an emergence surface for the emergence of the light rays; the emergence surface is a free curved surface and is provided with a boundary which divides the free curved surface into a large side and a small side; and the curvature change of the curved surface at the side with larger area is smaller than the curvature change of the curved surface at the side with smaller area, thus the light rays are deflected to the curved surface side with the maximum area on the emergence surface through the lens. The LED light source assembly and LED lamp disclosed by the invention can enable the light rays to be directionally emitted and focused, thus the utilization efficiency of light energy is greatly enhanced; various installation modes are specially designed aiming at a special application environment, and an excellent heat radiating design is designed aiming at different installation modes.
Description
Technical field
The invention belongs to lighting field, specifically, relate to a kind of LED (light emitting diode) light source assembly and LED light fixture that is applied to the low level illumination.
Background technology
The appearance that road lighting is accompanied by road occurs, and has brought convenience from each side such as security, comfortableness, conveniences for people's daily traffic life.But the common pavement of road lighting apparatus in market all is conventional rod-type roads light substantially now, and along with progress of science and technology, people begin to find that conventional rod-type roads light has bigger limitation in many application places.
Because the lamp stand of conventional rod-type roads light has brought many inconvenience than higher to installation and maintenance.In the installation and maintenance process, the staff needs work high above the ground, thereby exists certain personal safety hidden danger.And, the lighting apparatus that the high-altitude hangs, the wind resistance of its permanent plant (the lamp lamp stand mainly shows the way), antidetonation, weather resistance etc. have been proposed very strict requirement, also exist simultaneously certain potential safety hazard, application places such as bridge particularly, rod-type roads light are subjected to Effect of Environmental such as wind-force and the vibrations that produce and vibration even the matrix that can satisfy the need produce damaging influence.
In addition, because the visual impact that dazzle brings to the driver, can greatly reduce perception of human eyes comfortableness and visual identity ability, thereby cause hidden peril of accident, therefore in the road traffic illumination was used, the requirement aspect dazzle control was very strict, and conventional rod-type roads light is because the requirement of irradiating width, the rising angle broad is difficult in the dazzle control.
On the other hand, also be based on the limitation of luminous intensity distribution technology, in special single file such as ring road, many complicated road application places such as curved, conventional rod-type roads light is because its floodlighting characteristic, light path not exclusively concentrates on the road surface, make the guided bone of road lighting not reach demand, cause the road lighting blind spot, and then easily cause traffic accident.
Summary of the invention
In view of this, technical problem to be solved by this invention provides a kind of led light source assembly and LED light fixture that is applied to the low level illumination, at ring road, overhead bridge circuit, general bridge, viaduct, bypass, stop the application places that road etc. is not suitable for installing conventional rod-type roads light temporarily, cooperate its low level to install to satisfy the lighting demand in most of special applications place, promptly directional transmissions and range of exposures extensively and not produce dazzle.
In order to solve the problems of the technologies described above, the invention provides a kind of led light source assembly that is applied to the low level illumination, comprising: the led light source unit that a plurality of arrays that are installed on the same LED substrate are arranged; Described led light source unit, comprise: light source and the lens that are located on the described light source, described lens have an incidence surface and the exiting surface for this beam projecting for the indent of the light incident of light source, this exiting surface is a free form surface, it has a line of demarcation this free form surface is divided into big or small both sides, the curvature of the bigger N-Side surf of area changes to be delayed in the less N-Side surf of area, makes the curved sides deflection of light through described lens area maximum on this exiting surface with this.
Further, this incidence surface comprises at least two quadratic surfaces, and described curved surface is arranged side by side, and the curvature of described curved surface makes the curved sides deflection of light through described lens curvature minimum on this incidence surface along the orientation monotone variation of described curved surface with this; Wherein, the central shaft of this incidence surface passes this light source position; Described line of demarcation is one to be parallel to quadric orientation on this incidence surface and to comprise the projection of plane on this exiting surface of described central shaft; There is an angle in trend direction quadric orientation on the projection on the horizontal plane and this incidence surface that the curvature of free form surface changes on this exiting surface.
Further, this incidence surface comprises at least one shape free form surface of exiting surface as described, as be a plurality of as described in free form surface, described free form surface is arranged side by side, the trend unanimity that changes along the curvature of each free form surface of orientation of described free form surface, making light change a mild lateral deviation through the curvature of described lens each free curved surface on this incidence surface with this changes; Wherein, the central shaft of this incidence surface passes this light source position; Described line of demarcation is the trend direction that changes of a curvature that is parallel to free form surface on this incidence surface and the projection of plane on this exiting surface that comprises described central shaft; There is an angle in the trend direction that the curvature of trend direction free form surface on the projection on the horizontal plane and this incidence surface that the curvature of free form surface changes on this exiting surface changes.
Further, described lens cap is located at and is made the central shaft of described incidence surface and the optical axis coincidence of described light source on the described light source, and described angle is 90 degree.
Further, also comprise: reflector, place curvature on the exiting surface of described lens to change big curved surface one side, the light of this curved surface outgoing is reflexed to opposite side; Described lens leave screens, and described reflector is placed in the described screens; Perhaps described reflector is fixed on the aluminium base or radiator of luminescence component with lens.
Further, the reflecting surface of described reflector is quadratic surface or free form surface, electroplates highly reflective material to obtain minute surface reflecting effect or diffuse effect; The outer surface of described reflector makes the erosion line or frosted is handled to break up the light that other luminescence components shine this outer surface.
Further, a plurality of led light sources unit on the described led light source assembly is arranged in a linear; The rotation of described lens, trend direction and described direction arranged in a straight line that the curvature of free form surface on the exiting surface of lens of led light source unit is changed have an angle.
In order to solve the problems of the technologies described above, the present invention also provides a kind of LED light fixture that is applied to the low level illumination, comprising: at least one led light source assembly; Described led light source assembly also comprises: the led light source unit that a plurality of arrays that are installed on the same LED substrate are arranged; Described led light source unit, further comprise: light source and the lens that are located on the described light source, described lens have an incidence surface and the exiting surface for this beam projecting for the indent of the light incident of light source, this exiting surface is a free form surface, it has a line of demarcation this free form surface is divided into big or small both sides, the curvature of the bigger N-Side surf of area changes to be delayed in the less N-Side surf of area, makes the curved sides deflection of light through described lens area maximum on this exiting surface with this.
Further, this incidence surface comprises at least two quadratic surfaces, and described curved surface is arranged side by side, and the curvature of described curved surface makes the curved sides deflection of light through described lens curvature minimum on this incidence surface along the orientation monotone variation of described curved surface with this; Wherein, the central shaft of this incidence surface passes this light source position; Described line of demarcation is one to be parallel to quadric orientation on this incidence surface and to comprise the projection of plane on this exiting surface of described central shaft; There is an angle in trend direction quadric orientation on the projection on the horizontal plane and this incidence surface that the curvature of free form surface changes on this exiting surface.
Further, this incidence surface comprises at least one shape free form surface of exiting surface as described, as be a plurality of as described in free form surface, described free form surface is arranged side by side, the trend unanimity that changes along the curvature of each free form surface of orientation of described free form surface, making light change a mild lateral deviation through the curvature of described lens each free curved surface on this incidence surface with this changes; Wherein, the central shaft of this incidence surface passes this light source position; Described line of demarcation is the trend direction that changes of a curvature that is parallel to free form surface on this incidence surface and the projection of plane on this exiting surface that comprises described central shaft; There is an angle in the trend direction that the curvature of trend direction free form surface on the projection on the horizontal plane and this incidence surface that the curvature of free form surface changes on this exiting surface changes.
Compare the technique effect that the present invention obtained with existing scheme:
The technical program solved at ring road, overhead bridge circuit, general bridge, grade separation, bypass, stop the problem that application places such as road is not suitable for installing conventional rod-type roads light temporarily, at these special applied environments special carry out shape-designing, structural design, luminous intensity distribution design; At the diversified mounting means of the special design of these special applied environments, as embedded installation, suck formula installation etc.; Carry out the good heat radiating design at different mounting means;
Can and gather the light directional transmissions, greatly improve the utilization ratio of luminous energy, in actual applications along road direction, the light of light fixture outgoing should be as far as possible along the direction of traffic irradiation, and the distance of irradiation is near the spacing of two lamps; And importantly can avoid light oppositely to penetrate,, produce unfavorable factors such as dazzle in case shine driver's eyes; In addition, at vertical road direction, the light of light fixture outgoing can photograph as much as possible to the road surface, the distance of this direction irradiation provides preferable emitting light path near the width of road, increases the efficiency of light energy utilization on road surface and the vertical and horizontal illumination uniformity on road surface;
The technical program has reasonable structural design, high-intensity lamp body structure, good radiating effect, diversified mounting means, luminous intensity distribution design accurately, printing opacity utilization rate efficiently, guarantee that light fixture can work under the special outdoor environment of sternness, have more outstanding optical application performance.
Description of drawings
Fig. 1 is a decomposition texture schematic diagram of the present invention;
Fig. 2 is a cross-sectional view of the present invention;
Fig. 3 is the schematic diagram of led light source of the present invention unit;
Fig. 4 is the decomposition texture schematic diagram of led light source assembly of the present invention;
Fig. 5 is the decomposition texture schematic diagram of led light source of the present invention unit;
Fig. 6 is the view of not ipsilateral of the LED lens of corresponding diagram 5;
Fig. 7 is the index path of light of the present invention through the LED lens.
Fig. 8 is the lens of the present invention schematic diagram of arranging.
Fig. 9 is the index path that adds behind the upper reflector of the present invention.
Figure 10 is a light fixture range of exposures schematic diagram of the present invention.
Figure 11 is the distribution curve flux figure of the present invention's actual measurement.
Main title among Fig. 1-5: end cap 1, collision mat 2, lamp body 3, LED substrate 4, led light source 5, LED lens 6, reflector 7, light penetrating panel 8, ray-screening board 9, LED driving power 10, electric support 11, respirator 12, water joint 13.
The specific embodiment
Below will cooperate graphic and embodiment describes embodiments of the present invention in detail, by this to the present invention how the application technology means implementation procedure that solves technical problem and reach the technology effect can fully understand and implement according to this.
Core idea of the present invention is: be applied to the led light source assembly of low level illumination, comprise: the led light source unit that a plurality of arrays that are installed on the same LED substrate are arranged; Described led light source unit, comprise: light source and the lens that are located on the described light source, described lens have an incidence surface and the exiting surface for this beam projecting for the indent of the light incident of light source, this exiting surface is a free form surface, it has a line of demarcation this free form surface is divided into big or small both sides, the curvature of the bigger N-Side surf of area changes to be delayed in the less N-Side surf of area, makes the curved sides deflection of light through described lens area maximum on this exiting surface with this.This incidence surface comprises at least two quadratic surfaces or at least one shape free form surface of exiting surface as described, provides towards the road surface to extend forwards to shining the formula luminous intensity distribution with the side of downward direction.
As shown in Figure 1, 2, be applied to the LED light fixture of low level illumination, comprise: end cap 1, collision mat 2, lamp body 3, LED substrate 4, led light source 5, LED lens 6, reflector 7, light penetrating panel 8, ray-screening board 9, LED driving power 10, electric support 11, respirator 12, water joint 13 etc.
This light fixture comprises 18 LEDs light sources 5, and wherein per six LEDs light sources 5 are packaged in and form a led light source assembly on the LED substrate 4, and this light fixture has three led light source assemblies altogether, and these led light source assemblies provide illumination jointly.Wherein, every LEDs light source 5 disposes LED lens 6 and a reflector 7, and LED lens 6 are fixed on the LED substrate 4, and reflector 7 is fixed on the LED lens 6, and wherein, LED lens 6 cover led light source 5, and reflector 7 is assemblied in lens 6 one sides.Certainly, the arrangement mode of quantity of light source and formation led light source assembly also can be other quantity and mode, this quantity of light source and/or led light source component application are in actual light fixture, generally all arrange by the certain spacing rule, but do not limit the number that this quantity of light source and/or led light source assembly use, the technical program is not limited to this.
Lamp body 3 is the constant cross-section stretching structure, and described cross section is a U type structure, with reference to Fig. 1 and 2.During described LED light fixture horizontal positioned, the base in described U type cross section and the floor projection on this base have an angle, with cooperated with LED lens 6 realize and adjust extend towards the road surface forwards to the luminous intensity distribution of downward direction.
Thereby end cap 1 is assemblied in the both sides of the stretching structure of lamp body 3 and forms an open cavity, and wherein lamp body 3 and end cap 1 are connected and fixed by thread mechanism, and LED substrate 4, led light source 5, LED lens 6, reflector 7 and ray-screening board 9 are arranged in the cavity.Light penetrating panel 8 is installed in the cavity that covers described opening on the lamp body 3, thereby light penetrating panel 8 surrounds an airtight cavity with lamp body 3, end cap 1 with lamp body inside.
Described end cap has position and/or the different installing component of closure, as the connecting hole position etc., to adapt to embedded or the formula that sucks is installed.Specifically, on end cap 1, prolong the direction perforate of light penetrating panel 8 sides, to adapt to embedded installation; On end cap 1, prolong direction perforate, install to adapt to the formula that sucks perpendicular to light penetrating panel 8.LED driving power 10 is placed in the radiating fin outside of lamp body 3 outer walls, and electrical appliance support 11 is connected and fixed LED driving power 10 and lamp body 3.
In addition, present embodiment is outdoor application luminaire, also add waterproof constructions such as collision mat, water joint, fluid sealant,, make the integral protection grade be not less than IP65 as respirator 12, water joint 13 being assemblied in the position of going up contiguous LED driving power 10 of lamp body 3.The junction is provided with collision mat 2 between end cap 1 and the lamp body 3; The fluid sealant sealing is used in junction between light penetrating panel 8 and end cap 1, the lamp body 3.
In the material part of whole light fixture, the material of all exposed structures all possesses certain corrosion-resistant, ageing resistace.Lamp body 3 adopts the aluminum alloy materials aluminium extruded moulding of high-qualitys, and is firm in structure, shock resistance is good, good heat dissipation effect; End cap 1 adopts the aluminium alloy compression casting moulding of high-quality, and the structural strength height is easy for installation, practical; Light penetrating panel 8 adopts high strength woven design safety glass, effectively suppresses dazzle, the structural strength height, and anti-strain is strong, and light penetrating panel 8 inner surfaces are striped or woven design or frosted structure, with the dazzle of further reduction light fixture; Reflector 7 adopts the higher white plastic injection mo(u)lding of reflectivity, and outer surface and inner surface adopt the surface treatment of different morals.Reduce dazzle and light pollution, improve light utilization efficiency; LED lens 6 adopt the transparent plastic precise forming of superb optical performance, and as PMMA (polymethyl methacrylate) or PC (Merlon) plastics, luminous intensity distribution is accurate, the light transmittance height.
As shown in Figure 3, for led light source 5, with the LED lens 6 of led light source 5 collocation and place the reflector 7 of the side of these LED lens 6 to be assembled into a led light source unit, some led light source cell array formulas are arranged can obtain the led light source assembly.The planform of led light source 5 does not limit.LED lens 6 leave screens, and reflector 7 is placed in the described screens, perhaps also reflector 7 can be fixed on the LED substrate 4 with LED lens 6 usefulness screws.
As shown in Figure 4, a plurality of led light sources unit is assembled on the same LED substrate 4, thereby obtains a led light source assembly.Led light source 5 is installed on the LED substrate 4, and LED lens 6 are in the same place by the buckle close fit with LED reflector 7.Thereby be installed in LED lens 6 on the LED substrate 4 again and cover led light source 5 LED lens 6, LED reflector 7, led light source 5 and LED substrate 4 are assembled together.
Below go through the realization of the led light source unit that constitutes by led light source 5, LED lens 6 and reflector 7.
At first, LED lens 6 are described.For preferable emitting light path is provided, increase the efficiency of light energy utilization on road surface and the vertical and horizontal illumination uniformity on road surface, LED lens 6 have the incidence surface and the exiting surface for this beam projecting of the indent of a confession light source incident, by the different axial arrangement of design exiting surface and incidence surface, make light by described two faces to the deflection of space specified direction.Can realize by following two kinds of schemes substantially:
First scheme-this incidence surface comprises at least two quadratic surfaces, and described curved surface is arranged side by side, and the curvature of described curved surface is along the orientation monotone variation of described curved surface; This exiting surface is a free form surface, and it has a line of demarcation this free form surface is divided into big or small both sides, and the curvature of the bigger N-Side surf of area changes to be delayed in the less N-Side surf of area; Make the curved sides deflection of light with this through described lens area maximum on the curved sides of curvature minimum on this incidence surface and this exiting surface;
The central shaft (being equivalent to Z axle in the following examples) that should as far as possible guarantee described incidence surface when wherein, described lens cover light source passes described light source position (being equivalent to O point in the following examples); Described line of demarcation, be one to be parallel to quadric orientation on the incidence surface (orientation promptly is equivalent to X-direction in the following embodiments, when being a plurality of quadratic surface, it is arranged also to extending arranging on the X-direction) and comprise the projection of plane on described exiting surface of the central shaft of incidence surface; Can be when lens are one-body molded according to the deviation direction of desired emergent ray, make that there is a corresponding angle in quadric orientation on the projection (promptly being equivalent to Y direction in the following examples) of trend direction on horizontal plane that the curvature of free form surface on the exiting surface changes and the incidence surface.
Alternative plan-this exiting surface is a free form surface, and it has a line of demarcation this free form surface is divided into big or small both sides, and the curvature of the bigger N-Side surf of area changes to be delayed in the less N-Side surf of area; This incidence surface comprises at least one shape free form surface of exiting surface as described, as be a plurality of as described in free form surface, described free form surface is arranged side by side, the trend unanimity that changes along the curvature of each free form surface of orientation of described free form surface (be each free form surface in orientation all be same direction side curved surface area greatly and curvature change gently, the less and curvature of the area of the curved surface of other direction side changes hurriedly); Make light change the curved sides deflection of area maximum on a mild side and this exiting surface to the curvature of each free curved surface on this incidence surface through described lens with this;
The central shaft (being equivalent to Z axle in the following examples) that should as far as possible guarantee described incidence surface when wherein, described lens cover light source passes described light source position (being equivalent to O point in the following examples); Described line of demarcation, be the trend direction (curved surface orientation just when for a plurality of free form surface promptly is equivalent to X-direction in the following embodiments) that changes of a curvature that is parallel to free form surface on the incidence surface and the projection of plane on described exiting surface that comprises the central shaft of incidence surface; Can be when lens are one-body molded according to the deviation direction of desired emergent ray, make the trend direction of the curvature variation of free form surface on the projection (promptly being equivalent to Y direction in the following examples) of trend direction on horizontal plane that the curvature of free form surface on the exiting surface changes and the incidence surface have a corresponding angle.
Because above-mentioned two kinds of main implementation principles are identical, therefore only comprise that with indent light inlet face in first scheme two quadratic surfaces are that example is described below, other implementations contain the structure of a plurality of quadratic surfaces or at least one free form surface as indent light inlet bread, just give unnecessary details no longer one by one.In addition, above-mentioned angle is provided with as required, in the embodiment of this programme, for convenience, only be an angle of 90 degrees with X-axis and Y-axis and be described, but this programme is not limited to this.
Comprise that with indent light inlet face in first scheme two quadratic surfaces are that example describes LED lens 6.
For making things convenient for subsequent descriptions, introduce a three-dimensional rectangular coordinate system herein, as shown in Figure 5, wherein X-axis is corresponding to the width (being left and right directions) of LED lens 6, Y-axis is corresponding to the length direction (being fore-and-aft direction) of LED lens 6, the Z axle is corresponding to the short transverse (being above-below direction) of LED lens 6, and simultaneously, the Z axle also is the optical axis of led light source 5.Optical axis (Z axle) with led light source 5 is a benchmark, and LED lens 6 cover on the led light source 5 and the central shaft of the indent incidence surface of LED lens 6 and the optical axis coincidence of led light source 5, promptly makes the central shaft of indent incidence surface of LED lens 6 also be the Z axle.Can change peripheral structure except that lens incidence surface and exiting surface so that fixed reflector.
Fig. 6 is the view of not ipsilateral of the LED lens 6 of corresponding diagram 5, with reference to Fig. 6 c, wherein 1a is an exiting surface, but this exiting surface 1a and be a monoblock sphere curved surface unlike traditional lens exiting surface, neither form by the smooth connection of polylith curved surface, this curved surface fits to curve (being commonly referred to as bus) by a plurality of discrete points and converts curved surface again to, and in fact it is a free form surface.With reference to Fig. 6 a, 6b and 6c, this exiting surface 1a is about the Y-axis symmetry.With the initial point is the center, choosing the plane of X-axis and Z axle formation and the intersecting lens of exiting surface 1a is the line of demarcation, this exiting surface is divided into big or small two parts by described line of demarcation, the positive direction surface area of Y-axis is big and the curvature variation is comparatively slow, the surface area of Y-axis negative direction is less and the curvature variation is very fast, the purpose of doing like this is to allow light be partial to the positive axis of Y-axis, i.e. directive direction of traffic (referring to Figure 11) as far as possible.
Shown in Fig. 6 b, the cross section of Y direction, after the light of unspecified angle incided the incidence surface of LED lens 6, the angle of light that enters LED lens 6 was less than incident ray, and promptly this incidence surface plays the effect of dispersing slightly towards the positive direction side of Y-axis to light.
For exiting surface, when light marches to exiting surface because light is to be passed to air by medium, thereby the angle of emergence is greater than incidence angle (this incidence angle is the angle of emergence of incidence surface), the area that the curvature that is positioned at central shaft left side (Y-axis positive direction side) changes curved surface slowly greatly, so most light all are to change curved surface refraction slowly through curvature to change to the positive direction lateral deviation of Y-axis, and disperse slightly.
Note, guarantee that the central shaft (chain-dotted line) of indent incidence surface overlaps with optical axis of LED (chain-dotted line).
Incidence surface is to be formed by connecting along the directional smoothing of X-axis by different quadratic surface 2a, the 2b of two amount of curvature among Fig. 6, with reference to Fig. 6 d and 6e, this incidence surface is about the X-axis symmetry, the curved surface 2b curvature that is in the X-axis positive direction is less than the curved surface 2a that is in the X-axis negative direction, the purpose of doing like this is to allow light be partial to the negative semiaxis of X-axis as far as possible, be light downward bias, directive road surface (referring to Figure 11).
Shown in Fig. 7 a, the cross section of directions X, when the light of unspecified angle incided the incidence surface of LED lens 6, because light is to be passed to medium by air, the angle of emergence was less than incidence angle.On the incidence surface, the less curved surface of curvature is positioned at X-axis positive direction side, the curved surface (part of irising out among Fig. 7 a) of the overwhelming majority on the quadratic surface, it on arbitrarily the normal direction of any point to upper left side (X-axis positive direction side), thereby most light will be rolled over to the negative direction lateral deviation of X-axis.
For exiting surface, because light is to be passed to air by medium, the angle of emergence is greater than incidence angle (this incidence angle is the angle of emergence of incidence surface), this moment, the more multidirectional X-axis negative direction of the most emergent raies lateral deviation in central shaft left side was changeed, the more multidirectional X-axis positive direction of the most emergent raies lateral deviation on central shaft right side is changeed, and the emergent ray deflection on central shaft right side is more than the emergent ray in central shaft left side; Generally, the emergent ray through LED lens 6 is played the effect of gathering slightly to central shaft.
Because this light fixture is applicable to low level setting height(from bottom) below 1.5 meters, thereby the design of LED lens 6 should make the deflection angle of emergent ray should be not excessive according to demand, otherwise possibly can't shine whole road surface.Based on above characteristics, described LED lens 6 are integrated the light that is sent by led light source 5 by the mode of refraction, total reflection, redistribute the light path of emergent ray.Make most light follow the outgoing of car direction, simultaneously, glazed thread must be beneficial to more light is projected road surface (referring to Figure 11) to road surface side deflection in vertical road plane.
According to actual needs can be with the suitable angle of LED lens 6 rotation, generally make the orientation of Y direction and the led light source unit of whole LED light source assembly of the LED lens 6 of each led light source unit that one 5～10 angles of spending are arranged.As shown in Figure 8, this angle is regulated according to the mounting distance of light fixture.LED lens 6 and LED reflector 7 are used the emitting light path that provides preferable, increase the efficiency of light energy utilization on road surface and the vertical and horizontal illumination uniformity on road surface.
Below, reflector 7 is described.As shown in Figure 9, described reflector 7 is installed on the LED lens 6 and is positioned at curved surface one side of the Y-axis negative direction side of LED lens 6 exiting surfaces, and the draw-in groove of the screens of reflector 7 and LED lens 6 closely cooperates and makes things convenient for the product assembling.
In order to reduce dazzle and light pollution, the inner surface of reflector 7 (reflecting surface) is quadratic surface or free form surface, the electrodepositable highly reflective material to be obtaining minute surface reflecting effect or diffuse effect, if use the higher white plastic of reflectivity then its inner surface can not deal with.Its effect is that the light with Y-axis negative direction (the less curved surface of lens exiting surface) reflexes to the Y-axis positive direction, this part light will follow the outgoing of car direction, has not only reduced the utilization ratio that dazzle has also greatly improved luminous energy.
At the arrangement mode of a plurality of led light sources unit of Fig. 8, the outer surface of reflector 7 may cause reflection to the light of the led light source unit outgoing that is arranged in its back, thereby causes unfavorable factors such as dazzle.In order to reduce or this kind unfavorable factor that weakens, the outer surface of described reflector 7 must be done processing such as erosion line or frosted breaing up the light that shines this outer surface from a back led light source unit, but this outer surface there is no fixed profile.Certainly, if the spacing of the led light source unit of light fixture enough greatly also can not done processing such as erosion line or frosted.
In addition, referring to Figure 10 a, along the vertical view of road direction, along the direction of traffic irradiation, the distance of irradiation is near the spacing of two lamps as far as possible for the light of light fixture outgoing; And importantly can avoid light oppositely to penetrate,, produce unfavorable factors such as dazzle in case shine driver's eyes; In addition, referring to Figure 10 b, at vertical road direction, the light of light fixture outgoing can photograph as much as possible to the road surface, the distance of this direction irradiation is near the width of road.To the luminous intensity distribution of the actual test of light fixture referring to Figure 11.Described led light source unit uses in the ordinary course of things in pairs, promptly is divided into being installed in road left side and right side.Relative two kinds of led light source unit (shape of incidence surface is relative) except that the incidence surface difference of lens of installing, remainder is all identical, assembles also identical with fixed form.Assembling can also be made amendment to LED lens 6 bodies for convenience, and this structure only needs LED lens 6 are stuck on the LED substrate 4, and is easy to operate, improves packaging efficiency greatly.
Above-mentioned explanation illustrates and has described some preferred embodiments of the present invention, but as previously mentioned, be to be understood that the present invention is not limited to the disclosed form of this paper, should not regard eliminating as to other embodiment, and can be used for various other combinations, modification and environment, and can in invention contemplated scope described herein, change by the technology or the knowledge of above-mentioned instruction or association area.And change that those skilled in the art carried out and variation do not break away from the spirit and scope of the present invention, then all should be in the protection domain of claims of the present invention.
Claims (10)
1. a led light source assembly that is applied to the low level illumination is characterized in that, comprising: the led light source unit that a plurality of arrays that are installed on the same LED substrate are arranged; Described led light source unit, comprise: light source and the lens that are located on the described light source, described lens have an incidence surface and the exiting surface for this beam projecting for the indent of the light incident of light source, this exiting surface is a free form surface, it has a line of demarcation this free form surface is divided into big or small both sides, the curvature of the bigger N-Side surf of area changes to be delayed in the less N-Side surf of area, makes the curved sides deflection of light through described lens area maximum on this exiting surface with this.
2. led light source assembly as claimed in claim 1 is characterized in that,
This incidence surface comprises at least two quadratic surfaces, and described curved surface is arranged side by side, and the curvature of described curved surface makes the curved sides deflection of light through described lens curvature minimum on this incidence surface along the orientation monotone variation of described curved surface with this; Wherein, the central shaft of this incidence surface passes this light source position; Described line of demarcation is one to be parallel to quadric orientation on this incidence surface and to comprise the projection of plane on this exiting surface of described central shaft; There is an angle in trend direction quadric orientation on the projection on the horizontal plane and this incidence surface that the curvature of free form surface changes on this exiting surface.
3. led light source assembly as claimed in claim 1 is characterized in that,
This incidence surface comprises at least one shape free form surface of exiting surface as described, as be a plurality of as described in free form surface, described free form surface is arranged side by side, the trend unanimity that changes along the curvature of each free form surface of orientation of described free form surface, making light change a mild lateral deviation through the curvature of described lens each free curved surface on this incidence surface with this changes; Wherein, the central shaft of this incidence surface passes this light source position; Described line of demarcation is the trend direction that changes of a curvature that is parallel to free form surface on this incidence surface and the projection of plane on this exiting surface that comprises described central shaft; There is an angle in the trend direction that the curvature of trend direction free form surface on the projection on the horizontal plane and this incidence surface that the curvature of free form surface changes on this exiting surface changes.
4. as claim 2 or 3 described led light source assemblies, it is characterized in that,
Described lens cap is located at and is made the central shaft of described incidence surface and the optical axis coincidence of described light source on the described light source, and described angle is 90 degree.
5. as claim 2 or 3 described led light source assemblies, it is characterized in that,
Also comprise: reflector, place curvature on the exiting surface of described lens to change big curved surface one side, the light of this curved surface outgoing is reflexed to opposite side; Described lens leave screens, and described reflector is placed in the described screens; Perhaps described reflector is fixed on the aluminium base or radiator of luminescence component with lens.
6. as claim 2 or 3 described led light source assemblies, it is characterized in that,
The reflecting surface of described reflector is quadratic surface or free form surface, electroplates highly reflective material to obtain minute surface reflecting effect or diffuse effect; The outer surface of described reflector makes the erosion line or frosted is handled to break up the light that other luminescence components shine this outer surface.
7. as claim 2 or 3 described led light source assemblies, it is characterized in that,
A plurality of led light sources unit on the described led light source assembly is arranged in a linear; The rotation of described lens, trend direction and described direction arranged in a straight line that the curvature of free form surface on the exiting surface of lens of led light source unit is changed have an angle.
8. a LED light fixture that is applied to the low level illumination is characterized in that, comprising: at least one led light source assembly; Described led light source assembly also comprises: the led light source unit that a plurality of arrays that are installed on the same LED substrate are arranged; Described led light source unit, further comprise: light source and the lens that are located on the described light source, described lens have an incidence surface and the exiting surface for this beam projecting for the indent of the light incident of light source, this exiting surface is a free form surface, it has a line of demarcation this free form surface is divided into big or small both sides, the curvature of the bigger N-Side surf of area changes to be delayed in the less N-Side surf of area, makes the curved sides deflection of light through described lens area maximum on this exiting surface with this.
9. LED light fixture as claimed in claim 8 is characterized in that,
This incidence surface comprises at least two quadratic surfaces, and described curved surface is arranged side by side, and the curvature of described curved surface makes the curved sides deflection of light through described lens curvature minimum on this incidence surface along the orientation monotone variation of described curved surface with this; Wherein, the central shaft of this incidence surface passes this light source position; Described line of demarcation is one to be parallel to quadric orientation on this incidence surface and to comprise the projection of plane on this exiting surface of described central shaft; There is an angle in trend direction quadric orientation on the projection on the horizontal plane and this incidence surface that the curvature of free form surface changes on this exiting surface.
10. LED light fixture as claimed in claim 8 is characterized in that,
This incidence surface comprises at least one shape free form surface of exiting surface as described, as be a plurality of as described in free form surface, described free form surface is arranged side by side, the trend unanimity that changes along the curvature of each free form surface of orientation of described free form surface, making light change a mild lateral deviation through the curvature of described lens each free curved surface on this incidence surface with this changes; Wherein, the central shaft of this incidence surface passes this light source position; Described line of demarcation is the trend direction that changes of a curvature that is parallel to free form surface on this incidence surface and the projection of plane on this exiting surface that comprises described central shaft; There is an angle in the trend direction that the curvature of trend direction free form surface on the projection on the horizontal plane and this incidence surface that the curvature of free form surface changes on this exiting surface changes.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106233365A CN102109132B (en) | 2010-12-30 | 2010-12-30 | LED (Light Emitting Diode) light source assembly applied to low-order lighting and LED lamp applied to low-order lighting |
| PCT/CN2011/084624 WO2012089077A1 (en) | 2010-12-30 | 2011-12-26 | Led light source assembly and led light fixture applied to low-location lighting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106233365A CN102109132B (en) | 2010-12-30 | 2010-12-30 | LED (Light Emitting Diode) light source assembly applied to low-order lighting and LED lamp applied to low-order lighting |
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| CN102109132A true CN102109132A (en) | 2011-06-29 |
| CN102109132B CN102109132B (en) | 2013-11-13 |
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| CN2010106233365A Active CN102109132B (en) | 2010-12-30 | 2010-12-30 | LED (Light Emitting Diode) light source assembly applied to low-order lighting and LED lamp applied to low-order lighting |
Country Status (2)
| Country | Link |
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| CN (1) | CN102109132B (en) |
| WO (1) | WO2012089077A1 (en) |
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| CN103249989A (en) * | 2011-09-03 | 2013-08-14 | 新技术银行株式会社 | Led lighting apparatus |
| CN103277717A (en) * | 2013-06-03 | 2013-09-04 | 苏州荣文库柏光电科技有限公司 | Flood light |
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| WO2012089077A1 (en) | 2012-07-05 |
| CN102109132B (en) | 2013-11-13 |
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Effective date of registration: 20170822 Address after: 510000, building 203, building B, 188 Kaiyuan Road, Whampoa District, Guangdong, Guangzhou Patentee after: NEWTECH LIGHTING TECHNOLOGY CO.,LTD. Address before: 100176, No. two, No. 28, Hai Lu, Beijing economic and Technological Development Zone, Beijing Patentee before: Beijing Lampearl Photoelectric Co.,Ltd. |
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Denomination of invention: An LED lamp applied to low lighting Effective date of registration: 20230117 Granted publication date: 20131113 Pledgee: Agricultural Bank of China Limited Guangzhou Development Zone Branch Pledgor: NEWTECH LIGHTING TECHNOLOGY CO.,LTD. Registration number: Y2023980031519 |
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