CN205938994U

CN205938994U - Multipath reflection ware and LED lamps and lanterns

Info

Publication number: CN205938994U
Application number: CN201620536493.5U
Authority: CN
Inventors: 林岩
Original assignee: Pak Corp Co Ltd
Current assignee: Pak Corp Co Ltd
Priority date: 2016-06-02
Filing date: 2016-06-02
Publication date: 2017-02-08
Anticipated expiration: 2026-06-02

Abstract

The utility model discloses a multipath reflection ware, for the arc just is rectangular form, the one side of reflector indent is the lower surface, and this lower surface is a diffuse reflection face, the plane of reflection is the curved surface that removes sectional circle post side gained with the plane that is on a parallel with the cylindrical axle. The utility model also discloses a LED lamps and lanterns, include the LED lamp strip of reflector and assembly permutation LED light source, LED lamp strip sets up in the reflector below aslope. The utility model discloses can convert banding hi -lite LED light source to large tracts of land reflection of light face, the brightness uniformity on the reflection of light face can't see the light source from the below simultaneously, also can't see the mirror image of light source to reach the purpose of eliminating the glare, because it is the reflectivity of plane of reflection is high, less to the absorption of luminous flux simultaneously, so luminaire efficiency is higher, can reach 90%.

Description

A kind of multireflector and LED lamp

Technical field

This utility model is related to lighting technical field, particularly a kind of by multipath reflection realize free from glare reflector and Assemble the LED lamp of this reflector.

Background technology

The fields such as industry, medical treatment, landscape, lighting of home have been widely used in using the light fixture of LED light source.With LED The extensive application of lamp, the also more and more higher of the requirement to LED lamp, particularly household and public illumination part are it is desirable to light fixture can More and more comfortable illuminating effect is provided.But LED light source innately has one disadvantage in that it is simply that light-emitting area is little, luminous intensity is high, brightness Also high, human eye cannot look at light source straight at all.

Since LED light source uses as lighting source, take various technical methods and gone to improve LED light source Congenital defect, improve LED lamp comfortableness.Typically adopt following several schemes：First, modal solution is shown in LED Down lamp, the light-emitting window of light fixture add one for diffusion PC cover, PC cover on be mixed with spread powder, such mode can be realized Certain diffusion, the LED light source that small area is lighted is diffused as a larger light-emitting area, but the consequence of do so is to damage Lose larger luminous flux, cause light source utilization rate low, be particularly made thin big by the size limitation of Down lamp it is impossible to enough cover PC, So brightness on PC cover for the point source is still very big, dazzle yet suffers from.2nd, by the way of adding light guide plate, existing panel Lamp all adopts this solution, is converted into face using the light on the light source that whole piece is arranged by light guide plate and lights, then by light guide plate The light diffuser plate derived spreads apart, and the advantage of this mode is that light diffusion effect is good, can be converted into point source larger Light-emitting area, dazzle is also little simultaneously, but shortcoming to be light fixture manufacturing cost high, and the utilization ratio of light is not high.

From the above analysis, currently used reduce light source dazzle method, not ideal it is impossible to perfect and Turn round and look at comfortableness and light utilization.

Utility model content

The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of reasonable in design, simple nothing of structure Dazzle reflector, it to realize the effect of free from glare by using multipath reflection.

This utility model employs the following technical solutions the problems of solution the prior art：

A kind of multireflector is arc and be strip, and the one side of reflector indent is lower surface, and this lower surface is unrestrained Reflecting surface.

Further, described reflecting surface is to go to cut the curved surface of cylindrical side gained with the plane of the axle parallel to cylinder.

Further, the cross section of described reflecting surface is arc, and the midpoint of the line segment to be connected to this arc two-end-point is Initial point, with this line segment as x-axis, negative direction with the opening direction of reflector as y-axis it is assumed that the Opening length of this arc as b, anti- The height penetrating face peak is a, then this arcuate line segment meets following equation：Y=a-4a × x²/b²；Wherein, x is abscissa, Its span is-b/2≤x≤b/2.

Further, two parameters in described equation meet such as lower inequality：4×a>b.

Further, described diffuse-reflectance face is by the high reflectance diffuse-reflectance dope layer being sprayed on reflector lower surface or stickup Formed in the high reflectance diffuse-reflectance reflective sheeting of reflector lower surface.

Further, described reflector is zhou duicheng tuxing.

Another object of the present utility model is to provide a kind of LED lamp, including reflector and assembling permutation LED light source LED lamp bar, described LED lamp bar is obliquely arranged at below reflector, and described reflector is as described above.

Further, with the midpoint of described reflector opening for initial point O it is assumed that vertical dimension between LED light source and O point For h, the horizontal range between LED light source and O point is d, then reflector and the distance of LED light source meet following inequality：

2h>a；

2b/5<d<b/2；

Wherein, a is the height of reflecting surface peak, and b is the length of reflector opening.

Further, the back side of described LED lamp bar and the angle of horizontal plane are C, then C meets such as lower inequality：20°<C< arctan(d/(h+a)).

Further, described LED lamp bar arranges the array of source that a permutation is arranged by plurality of LEDs light source.

Compared with prior art, the beneficial effects of the utility model are:

The high-brightness LED light source of strip can be converted into large area reflective surface using this utility model, reflective surface simultaneously On brightness uniformity, can't see light source from below, also can't see the mirror image of light source, thus reach eliminate dazzle purpose, simultaneously Because the reflectance of reflecting surface is high, the absorption to luminous flux is less, so Luminaire efficiency is higher, can reach 90%.

Brief description

Fig. 1 is surface structure schematic diagram of the present utility model；

Fig. 2 is the cross-sectional structure figure of this utility model reflector；

Fig. 3 is this utility model LED lamp bar and the position relationship schematic diagram of reflector；

Fig. 4 be light reflected cover reflection after move towards schematic diagram.

Specific embodiment

With reference to the accompanying drawings and detailed description this utility model is made with further details of explanation and illustrates, but not It is the restriction to this utility model structure.

Embodiment 1

Refer to Fig. 1, a kind of multireflector 1 of the present utility model, by spraying high reflection in reflector lower surface Rate diffuse-reflectance dope layer or reflector lower surface paste high reflectance diffuse-reflectance reflective sheeting and form reflecting surface.Under reflector Surface refers to the side caving inward.

Reflector 1 generally arc and be strip.If being described with curved surface, the axle parallel to cylinder for this reflecting surface Plane go to cut the curved surface of cylindrical side gained, and be the less part of surface area.Therefore, this reflector is zhou duicheng tuxing.

Refer to Fig. 2, the cross section 2 of reflecting surface is arc, and the midpoint of the line segment to be connected to this arc two-end-point is former Point O, with this line segment as x-axis, the negative direction with the opening direction of reflector as y-axis is it is assumed that any point in arcuate line segment is at this Coordinate points under coordinate system be (x, y) it is assumed that this arcuate line segment Opening length be b, reflecting surface peak height be a, then This arcuate line segment meets following equation：Y=a-4a × x²/b², wherein, x is abscissa, and its span is-b/2≤x≤b/ 2, it is calculated as the value of vertical coordinate y according to formula above, two in equation parameter meets such as lower inequality：4a>b.

Embodiment 2

Please refer to Fig. 1 and Fig. 3, the present embodiment provides a kind of LED lamp, including reflector 1 with LED lamp bar 3.LED Lamp bar 3 is obliquely arranged at below reflector 1, assembles the plurality of LEDs light source 4 neatly forming a line thereon.The structure of reflector 1 As described in Example 1.

As Fig. 3 it is assumed that the midpoint of reflector 1 opening is initial point O, the vertical dimension between LED light source 4 and O point is h, LED Horizontal range between light source 4 and O point is d, then described parameter meets following inequality：2h>a；2b/5<d<b/2；Wherein, a is The height of reflecting surface peak, b is the length of reflector opening.

The back side of LED lamp bar and the angle of horizontal plane are C, then C meets such as lower inequality：20°<C<arctan(d/(h+ a)).

Refer to Fig. 4, with reference to Fig. 4 illustrate LED lamp bar of the present utility model and reflection shield combination realize free from glare, The principle of high light-emitting rate.As shown in figure 4, being incident on reflector 1 by the light of LED lamp bar 3 outgoing, because of the following table of reflector 1 Face is high reflectance diffuse-reflectance surface, so reflection light is in lambert's body being distributed, though there being the direct outgoing of sub-fraction light, also has A big chunk light may proceed to reflex on reflector 1, and so at next incidence point, still old a fraction of light is direct Outgoing, and most light may proceed to reflex on reflector 1, through multiple reflections, light is just uniform to be reflected from reflector 1 Out.In this way, the LED point light source of strip is converted into area source, light is uniformly from the lower surface of reflector 1 Reflect.Due to the increase of reflective surface area, the brightness that point source directly projects substantially reduces, and actual test shows, this side Dazzle value UGR can be reduced to less than 19 by formula, simultaneously because reflecting surface is highly reflective material, the Luminaire efficiency of whole lamp reaches More than 90%.

This utility model is not limited to above-mentioned embodiment, if the various changes that this utility model is done or deformation Without departing from spirit and scope of the present utility model, if these are changed and deformation belongs to claim of the present utility model and is equal to Within technical scope, then intention of the present utility model also comprises these changes and deforms.

Claims

1. a kind of multireflector it is characterised in that：Described reflector is arc and is strip, the one side of reflector indent is Lower surface, this lower surface is diffuse-reflectance face.

2. multireflector according to claim 1 it is characterised in that：Described reflecting surface is with the axle parallel to cylinder Plane goes to cut the curved surface of cylindrical side gained.

3. multireflector according to claim 1 it is characterised in that：The cross section of described reflecting surface is arc, with even The midpoint being connected to the line segment of this arc two-end-point is initial point, with this line segment as x-axis, negative with the opening direction of reflector as y-axis Direction it is assumed that this arc Opening length be b, reflecting surface peak height be a, then this arcuate line segment meet equation below Formula：

Y=a-4a × x²/b²；

Wherein, x is abscissa, and its span is-b/2≤x≤b/2.

4. multireflector according to claim 3 it is characterised in that：Two parameters in described equation meet as follows Inequality：4×a>b.

5. the multireflector according to claim 2 or 4 it is characterised in that：Described diffuse-reflectance face is by being sprayed on reflector The high reflectance diffuse-reflectance dope layer of lower surface or be pasted onto the high reflectance diffuse-reflectance reflective sheeting of reflector lower surface and formed.

6. multireflector according to claim 2 it is characterised in that：Described reflector is zhou duicheng tuxing.

7. a kind of LED lamp, including reflector and assembling permutation LED light source LED lamp bar it is characterised in that：Described LED Bar is obliquely arranged at below reflector, and described reflector is the reflector as described in claim 1～6 any one.

8. LED lamp according to claim 7 it is characterised in that：With the midpoint of described reflector opening for initial point O, false If the vertical dimension between LED light source and O point is h, the horizontal range between LED light source and O point is d, then reflector and LED The distance of light source meets following inequality：

2h>a；

2b/5<d<b/2；

9. LED lamp according to claim 8 it is characterised in that：The back side of described LED lamp bar with the angle of horizontal plane is C, then C satisfaction such as lower inequality：20°<C<arctan(d/(h+a)).

10. LED lamp according to claim 7 it is characterised in that：Described LED lamp bar arranges a permutation by plurality of LEDs light The array of source of source arrangement.