CN203215318U

CN203215318U - Lampshade for lamp

Info

Publication number: CN203215318U
Application number: CN201320082540XU
Authority: CN
Inventors: 颜晓英; 黄世蔚; 张元�
Original assignee: Dongguan Woomi Power Tech Co Ltd
Current assignee: Dongguan Woomi Power Tech Co Ltd
Priority date: 2013-02-22
Filing date: 2013-02-22
Publication date: 2013-09-25
Anticipated expiration: 2023-02-22

Abstract

The utility model discloses a lampshade for a lamp. The lampshade comprises a lamp casing, a cone-shaped body and a light-emitting diode (LED) lamp source, wherein the lamp casing is of a reflecting bowl structure and comprises an annular plate. The annular plate is provided with a gentle-slope portion, a multiple reflection portion, a secondary reflection portion and a primary reflection portion, wherein the gentle-slope portion, the multiple reflection portion, the secondary reflection portion and the primary reflection portion sequentially increase in curvature. The cone-shaped body is fixedly arranged above the LED lamp source in a matched mode and provided with a parallel reflecting face, an upper emergent light reflecting face and an inner emergent light reflecting face, wherein horizontal dip angles of the parallel reflecting face, the upper emergent light reflecting face and the inner emergent light reflecting face increase sequentially. The lampshade for the lamp performs primary reflection through the cone-shaped body arranged on the lamp casing in a matching and by utilizing the parallel reflecting face, the upper emergent light reflecting face and the inner emergent light reflecting face, performs secondary reflection through the gentle-slope portion, the multiple reflection portion, the secondary reflection portion and the primary reflection portion and enables the light emitted by the LED lamp source to be even and free of dazzle.

Description

The light fixture lampshade

Technical field

The utility model relates to lighting technical field, especially relates to a kind of light fixture lampshade.

Background technology

These three kinds of lightings of street lamp, headlight for vehicles and Down lamp are when producing effective illumination beam, and the illuminator of taper causes secondary above emission light and uncontrollable light to form dazzling dazzle because process of surface treatment can not meet design requirement.Though the light of street lamp is very soft, can illuminate road to passerby, the dazzle meeting that it produces makes the people not see road, is one of the main light pollution source in city; Because the brightness of headlight for vehicles is more than the street lamp height, so it is stronger, more dazzling than the dazzle of street lamp in the dazzle that effective irradiates light of taper is peripheral upwards, outside, thereby when automobile meeting, the irradiated driver in opposite and pedestrian usually at the moment a slice grow dim, do not see road and the vehicle condition of front at all, usually cause operate miss, as easy as rolling off a log generation traffic accident in flurried.

Though existing lighting apparatus also has the design of strengthening lateral margin light, as Taiwan patent announcement M306299 LED ring shot-light source structure, it mainly is installed with light-guide device above the metal cup, this light-guide device upper end inner edge has a cambered surface, and be provided with scarf in outside, light-guide device bottom, the scattering that the source produces of LED lamp is provided, refracted ray, can be by the curvature mirror of light-guide device inside and cambered surface, cause this light to be formed with the phenomenon of critical angle total reflection, impel this light scattering in the outer periphery of light-guide device, change shot-light source structure lateral margin face and present more light-source brightness to reach LED, but the outside of light scattering and road optical element also can't provide telecurie irradiation.

The utility model content

Based on this, being necessary provides a kind of reflective free from glare light source at the problem of above-mentioned background technology existence, effectively avoids small size to produce dazzle, dazzling phenomenon that high brightness causes, reaches the light fixture lampshade of light source in the active set.

For achieving the above object, the utility model discloses a kind of light fixture, it comprises lamp housing, bullet and LED lamp source, described lamp housing is the reverberation bowl structure, described lamp housing comprises base plate and annular slab, described annular slab is located in around the described base plate, and described annular slab is provided with mild portion, repeatedly reflecting part, secondary reflection portion and primary event portion, and described mild portion, repeatedly reflecting part, secondary reflection portion and primary event portion curvature increase successively; Described LED lamp source is fixedly installed on the base plate, the fixing coupling of described bullet is arranged on top, described LED lamp source, described bullet be provided with parallel reflective faces, on penetrate light reflecting surface and injection light reflecting surface, described parallel reflective faces, on penetrate light reflecting surface and injection light reflecting surface level inclination increase successively.

Among embodiment, described lamp housing cross section roughly is " U " shape therein.

Among embodiment, the cross section of described bullet is " V " shape therein.

Among embodiment, described bullet downside surface is coated with reflector layer therein.

In sum, the utility model light fixture lampshade is by being provided with bullet in the lamp housing coupling, the parallel reflective faces of recycling bullet design, on penetrate the light reflecting surface and injection light reflecting surface multiple camber structure carries out secondary reflection just, cooperate the lamp housing design mild portion, repeatedly reflecting part, secondary reflection portion and primary event cage structure carry out secondary reflection again, make that the light that sends from LED lamp source is more even, more do not have a light sensation of dazzling.

Description of drawings

Fig. 1 is the structural representation of a kind of embodiment of the utility model.

Fig. 2 is cutaway view of the present utility model shown in Figure 1.

Fig. 3 is principle schematic of the present utility model shown in Figure 2.

Fig. 4 is the principle schematic of the utility model light reflection shown in Figure 3.

Fig. 5 is the instrumentation plan of critical projectional angle.

The specific embodiment

For further understanding feature of the present utility model, technological means and the specific purposes that reach, function, below in conjunction with accompanying drawing and the specific embodiment the utility model is described in further detail.

Extremely shown in Figure 5 as Fig. 1, the utility model light fixture lampshade comprises lamp housing 10, bullet 20 and LED lamp source 30, described lamp housing 10 is the reverberation bowl structure, described lamp housing 10 cross sections roughly are " U " shape, described lamp housing 10 comprises base plate 11 and annular slab 12, described annular slab 12 is located in around the described base plate 11, described annular slab 12 is provided with mild portion 121, repeatedly reflecting part 122, secondary reflection portion 123 and primary event portion 124, and described mild portion 121, repeatedly reflecting part 122, secondary reflection portion 123 and primary event portion 124 curvature progressively increase successively.

Described LED lamp source 30 is fixedly installed on the base plate 11, described bullet 20 fixing couplings are arranged on 30 tops, described LED lamp source, the cross section of described bullet 20 is " V " shape, described bullet 20 downside surfaces are coated with reflector layer, reflect with the light that LED lamp source 30 is launched, reduce the congregational rate of LED lamp source 30 emission light, reduce the optically focused phenomenon.Described bullet 20 is provided with parallel reflective faces 21, on penetrate light reflecting surface 22 and injection light reflecting surface 23 multiple cambers structure, described parallel reflective faces 21, on penetrate light reflecting surface 22 and injection light reflecting surface 23 level inclination increase successively, carry out reflex in an orderly manner with the light that LED lamp source 30 is sent, make from described parallel reflective faces 21, on penetrate the light that light reflecting surface 22 and injection light reflecting surface 23 reflect away and can arrive on the annular slab 12, the light that utilizes the reflex again of annular slab 12 that LED lamp source 30 is sent carries out scattering, reduces the dazzle influence that source 30 direct projections of LED lamp cause.

The all edges of the utility model light fixture lampshade shaft core direction is followed successively by focal zone 40 from top to bottom, middle focal zone 50 reaches focal zone 60 down, the described focal zone 40 of going up reaches middle focal zone 50 above described bullet 20, described focal zone 60 down is below described bullet 20, described LED lamp source 30 scattering that emits beam after lamp housing 10 and more than 20 reflex of bullet goes into to go up in 40 scopes of focal zone, makes focal zone 40 scopes change by cone governor body 20 and base plate 11 spacings; In described focal zone 50 be reflection ray through the blind area, described LED lamp source 30 emits beam and descends focal zone 60 through injection light reflecting surface 23 reflection back arrival.

Through theoretical research for many years and practice, utility model dazzle principle analysis theory, the differentiation of distinct dazzle light beam and non-dazzle light beam is the concept of critical projectional angle, and namely critical projectional angle refers to that light should be controlled crevice projection angle in the Design of Luminaires of projection from the top down.When light is invested ground greater than critical projectional angle, there is part light (being dazzle) can directly inject eyes down at normal visual angle (looking squarely); During only less than critical projectional angle, all light just can directly not injected eyes under normal visual angle (looking squarely), can not produce dazzle.

The computing formula of critical projectional angle Φ is: tan Φ=C/(A-B), wherein A be street lamp to the distance on ground, B is the health height of test person, C is that human body is to the vertical range of LED lamp source 30 perpendicular to the straight line on ground.

The utility model is according to above-mentioned theory and critical projectional angle principle after tested, design lamp housing 10 and bullet 20 in the light fixture lampshade, namely adopt bullet 20 and lamp housing 10 to control lighting angle or the zone in LED lamp source 30, satisfy the requirement of critical projectional angle, bullet 20 is controlled illumination beam in the effective lighting scope and critical projectional angle of overtesting and test fully with the reflex of lamp housing 10 like this, makes effective lighting scope illumination more even, and dazzle light beam change direction can be become effective irradiates light, anti-dazzle is effective, thereby can effectively eliminate the purpose that light pollution has reached anti-dazzle; By critical projectional angle design, make that the scattered beam in last focal zone 40 is more even, the free from glare sense.

Light are launched in the utility model LED lamp source 30, and wherein a part of light is through in focal zone 60 scopes under the 23 reflection back arrival of injection light reflecting surface; Wherein another part light emission is to bullet 20, between bullet 20 and lamp housing 10, come back reflective, form Secondary Emission light, four secondary reflection light, six secondary reflection light and eight secondary reflection light, a part of light emission is to the primary event portion 124 of lamp housing 10 simultaneously, and light direct projection after 124 reflections of primary event portion is gone out; LED lamp source 30 emits beam through after penetrating the reflection of light echo area on the bullet 20, pass through mild portion 121 and reflected in parallel district secondary reflection more again, arrive repeatedly reflecting part 122, utilize the theoretical emission of critical projectional angle to go into to go up

focal zone

40,40 li light is more even in last focal zone, the free from glare sense; Simultaneously LED lamp source 30 emits beam through parallel reflective faces 21 reflection back arrival secondary reflection districts, secondary reflection is laggard again in the secondary reflection district go in 40 scopes of focal zone.

In sum, the utility model light fixture lampshade is by being provided with bullet 20 in lamp housing 10 couplings, the parallel reflective faces 21 of recycling bullet 20 design, on penetrate light reflecting surface 22 and injection light reflecting surface 23 multiple cambers structure carries out secondary reflection just, cooperate the mild portion 121 of lamp housing 10 designs, repeatedly reflecting part 122, secondary reflection portion 123 and primary event portion 124 structures carry out secondary reflection again, make that the light that sends from LED lamp source 30 is more even, more do not have a light sensation of dazzling.

The above embodiment has only expressed several embodiment of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model claim.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model design, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.

Claims

1. light fixture lampshade, it is characterized in that: comprise lamp housing, bullet and LED lamp source, described lamp housing is the reverberation bowl structure, described lamp housing comprises base plate and annular slab, described annular slab is located in around the described base plate, described annular slab is provided with mild portion, repeatedly reflecting part, secondary reflection portion and primary event portion, and described mild portion, repeatedly reflecting part, secondary reflection portion and primary event portion curvature increase successively; Described LED lamp source is fixedly installed on the base plate, the fixing coupling of described bullet is arranged on top, described LED lamp source, described bullet be provided with parallel reflective faces, on penetrate light reflecting surface and injection light reflecting surface, described parallel reflective faces, on penetrate light reflecting surface and injection light reflecting surface level inclination increase successively.

2. light fixture lampshade according to claim 1, it is characterized in that: described lamp housing cross section roughly is " U " shape.

3. light fixture lampshade according to claim 1 is characterized in that: the cross section of described bullet is " V " shape.

4. light fixture lampshade according to claim 1, it is characterized in that: described bullet downside surface is coated with reflector layer.