CN2786420Y - LED traffic signal lamp - Google Patents
LED traffic signal lamp Download PDFInfo
- Publication number
- CN2786420Y CN2786420Y CNU2005200119587U CN200520011958U CN2786420Y CN 2786420 Y CN2786420 Y CN 2786420Y CN U2005200119587 U CNU2005200119587 U CN U2005200119587U CN 200520011958 U CN200520011958 U CN 200520011958U CN 2786420 Y CN2786420 Y CN 2786420Y
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Abstract
The utility model relates to a traffic signal lamp, particularly an LED traffic signal lamp, which uses an LED light source, wherein the LED light source is provided with a special double-layer structure, an inner cover and a front cover which are matched with angles to make the emitted light rays of the LED light source uniform and make the emitted light rays of the LED light source have the effect of fragmenting images. The utility model comprises an LED light source, a front cover which comprises an incident face and an emergent light face and an inner cover which is arranged between the LED light source and the front cover, wherein in the LED light source, a circuit board coupled with light emitting diodes which are arranged in the mode of distribution; hexagonal mirror blocks are arranged on the incident face; all the hexagonal mirror blocks are arranged and distributed on the incident face in the shape of a honeycomb in the mode that the parallel opposite edges of the hexagonal mirror block are vertical; a plurality of small mirror faces are also arranged on each of the mirror blocks. The inner cover comprises a light incidence face and an emergent face; a plurality of mirror columns are distributed and arranged on the emergent face; the mirror columns uses the center line of the emergent face as a vertical shaft and the mirror columns forms an included angle which is 65 DEG to 80 DEG with the center line to match with the front cover; the emergent light rays are homogenized.
Description
Technical field
The utility model relates to a kind of traffic lights, especially a kind of utilize LED (light emittingdiode, light emitting diode) light source and be provided with the inner cover of special double-decker and angle configurations and front shroud so that the light that led light source is launched is more even and have LED traffic lights of cutting apart the picture effect.
Background technology
Led light source is owing to have that power consumption is low, luminous efficiency is high and advantage such as long service life, add recent improvement of Manufacturing Technology, the luminosity of led light source more is higher than in the past, and the also reduction gradually of its cost, and therefore the trend that progressively replaces conventional bulb or fluorescent lamp arranged.In view of this, for significantly reducing electricity consumption saving the energy, and reduce the replacing bulb cost, various countries change former tradition one after another with the traffic lights of bulb as light source, and replace the LED traffic lights.By the LED of higher brightness, can strengthen the identification of each light color, and the sun phantom (sun-phantom) that produces because of the sunshine reflection easily when avoiding utilizing conventional bulb, to reduce the driver because of judging the danger that is caused by accident.Yet LED has the restriction of its light firing angle, and for the LED traffic lights that Transparent lamp shade only is set, it can't bring into play the effect (visual angle is narrower) of preferable luminous and identification; Though the improvement of installing lens was arranged afterwards, only concentrate to strengthen brightness, the effect that still can't make the driver that is positioned at the traffic signals below or pedestrian reach identification easily also can't obtain preferable luminous efficiency.
The improvement of known technology was as shown in Figure 1 and Figure 2 then arranged afterwards, this known technology only is provided with single lampshade minute surface 10 for the light source transmission, these lampshade minute surface 10 its light entrance faces 11 are provided with a plurality of strip mirror posts 13, respectively this strip mirror post 13 comprises blocks such as a cambered surface 131, a plane 132, a convex surface 133 and a vertical plane 134 respectively, also is provided with a plurality of arc projections 1331 on this convex surface 133.These strip mirror post 13 set positions are the positions with respect to LED 20, after light sends by single led 20, at first enter corresponding strip mirror post 13 on this lampshade minute surface 10 by this light entrance face 11, refraction by different blocks minute surface on this strip mirror post 13, penetrate by the direction of light-emitting face 12 at last, project in driver or pedestrian's the visual range with deflection horizontal line below.Though this light can focus in common people's the angular field of view by deviation, improving brightness, to increase identification, this known technology exists the light defective pockety that cause euphotic belt 21 and light blanking bar 22 spaces.On the other hand, its light of LED still can be known the mapping that difference is single led after the minute surface refraction, and the integral LED light source can't be formed the plane of a light uniformization, and is still limited for the reinforcement of identification, and more not attractive in appearance.
Summary of the invention
By improve LED light after lampshade minute surface refraction the light phenomenon pockety of generation light and shade band shape, and the further single led mapping of homogenising, the utility model provides a kind of front shroud and inner cover double-decker of particular design, the light that led light source sent is kept the concentrated direction that retrodeviates to the projection of oblique below on the one hand, make road utilize the people to be able to identification easily, while is by the configuration of special angle between this front shroud and its minute surface of this inner cover, solve the defective of light and shade light belt distribution in the past, make the light that projects more even; The also refraction by this inner cover on the other hand overcomes the shortcoming of LED single mapping, makes single ledly can penetrate the easier clearly identification of light by what cut apart that picture makes LED traffic lights integral body, also increases the aesthetic property of this LED when luminous simultaneously.
The utility model comprises: a led light source, this led light source are to be coupled with a plurality of LED arranged evenly on the circuit board; One front shroud, this front shroud comprises a plane of incidence and an emergent light face, this plane of incidence is provided with a plurality of hexagonal mirror pieces that are, respectively this hexagon mirror piece be with the parallel opposite side of one become vertical mode, with the honeycomb arranged distribution on this plane of incidence, simultaneously respectively also be provided with a plurality of little minute surfaces on this mirror piece; An and inner cover, cover between described led light source and the described front shroud in being somebody's turn to do, this inner cover comprises a light entrance face and an exit facet, wherein this exit facet is arranged evenly a plurality of mirror posts, these mirror posts are vertical axis with this exit facet center line, and become 65 ° to 80 ° angle with this center line, cooperating described front shroud, with emergent ray homogenising in addition.Wherein, respectively its vertical and horizontal curvature mirror of this mirror piece can be identically or different, and set its vertical and horizontal curvature mirror of little minute surface also can be identical or different on this mirror piece.On the other hand, these mirror posts can five is one group, and is connected into an arc-curved part mutually in edge's bending of this emergent light face, and forms a mirror post group, respectively the mirror post of these post mirror group central authorities is a central mirror post, and this central authorities' mirror post is provided with the position can be corresponding to the arrangement position of this LED.
According to above-mentioned LED traffic lights, wherein, further be provided with a plurality of circular arc mirror posts and a plurality of roundlet convex lens on the minute surface that the side edge of described mirror post group and this emergent light face is touched.
The light that LED sent is divided into several by the picture effect of cutting apart of this inner cover with the LED mapping earlier, the luminous intensity distribution effect of passing through this front shroud again is downward with deflection of light, and with it homogenising, make single led mapping can be divided into a plurality of pictures of cutting apart earlier, after increasing the distributivity of light, again via the front shroud second homogenisation, thereby produce the even and LED traffic signals projecting lamp more attractive in appearance when luminous of light more in the past.
Below conjunction with figs. is further specified embodiment of the present utility model; following cited embodiment is in order to illustrate the utility model; be not in order to limit scope of the present utility model; when carrying out a little change and retouching, therefore protection domain of the present utility model is as the criterion when looking claims person of defining who encloses those skilled in the art in not breaking away from spirit and scope of the present utility model.
Description of drawings
Fig. 1 is the schematic diagram of known technology front shroud;
Fig. 2 is the optical path schematic side view of known technology front shroud through the LED irradiation;
Fig. 3 be the utility model embodiment cross-sectional schematic;
Fig. 4 is the schematic diagram of the utility model embodiment inner cover;
Fig. 5 is the local enlarged diagram of Fig. 4 mirror piece;
Fig. 6 is the front plan view that the utility model embodiment front shroud is observed from light-emitting face;
Fig. 7 is the schematic diagram of the utility model embodiment inner cover;
Fig. 8 is the front plan view that the utility model embodiment inner cover is observed from exit facet;
Fig. 9 is the utility model embodiment led light source schematic diagram;
Figure 10 is the optical path schematic side view of the utility model embodiment through the LED irradiation;
Figure 11 is the optical path schematic side view of the utility model second embodiment through the LED irradiation; And
Figure 12 A to Figure 12 F is that LED traffic lights light belt changes visual simulation figure.
Wherein, description of reference numerals is as follows:
[known technology]
10 lampshade minute surfaces
11 light entrance faces, 12 light-emitting faces
13 strip mirror posts, 131 cambered surfaces
132 planes, 133 convex surfaces
1331 arc projections, 134 vertical planes
20 LED
21 euphotic belts, 22 smooth blanking bars
[the utility model]
30 front shrouds
31 planes of incidence, 311 mirror pieces
312 little minute surface 32 light-emitting faces
40 inner covers
41 light entrance faces, 42 exit facets
421 mirror posts, 422 mirror post groups
4221 central mirror post 4222 arc-curved parts
423 circular arc mirror posts, 424 roundlet convex lens
43 light-emitting faces, 431 mirror posts
432 mirror post groups, 44 center lines
45 horizontal lines
50 led light sources
51 LED, 52 circuit boards
53 cut apart picture 54 light
55 cut apart picture 56 light
The specific embodiment
See also Fig. 3, the utility model embodiment comprises a front shroud 30, an inner cover 40 and a led light source 50.This front shroud 30 comprises a plane of incidence 31 and a light-emitting face 32, and this inner cover 40 then comprises a light entrance face 41 and an exit facet 42.Comprise a circuit board 52 as for 50 of led light sources, be coupled with a plurality of LED arranged evenly 51 (please consulting Fig. 9 simultaneously) on this circuit board 52.The light that this LED 51 is sent through the refraction action of this inner cover 40, through the refraction second time of this front shroud 30, is throwed away by this light-emitting face 32 earlier again.
Please consult Fig. 4 to Fig. 6 simultaneously, be the schematic diagram of the utility model embodiment front shroud 30.This light-emitting face 32 of this front shroud 30 is smooth smooth mirror surfaces, and it can be plane minute surface, convex lens or concavees lens face.This plane of incidence 31 then is one to arrange the minute surface formed with honeycomb by a plurality of hexagon mirror pieces 311, respectively this hexagon mirror piece is to become the hexagon of vertical mode to put direction with the parallel opposite side of one to arrange simultaneously, and respectively these mirror piece 311 its vertical and horizontal curvature mirrors can be identical or different.Respectively also be provided with a plurality of little minute surfaces 312 (seeing also Fig. 5) simultaneously on this mirror piece 311, these little minute surfaces 312 are shaped as quadrangle and are covered with this mirror piece 311 with the matrix-style arrangement, respectively these little minute surface 312 its shapes also can be other polygon or circle, and its vertical and horizontal curvature mirror can be identical or different simultaneously.
See also Fig. 7 and Fig. 8, be the schematic diagram of the utility model embodiment inner cover 40.This inner cover 40 is located between this led light source 50 and this front shroud 30, and the light entrance face 41 of this inner cover 40 is a smooth smooth mirror surface, and it can be plane minute surface, convex lens or concavees lens face.Then be provided with a plurality of mirror posts 421 on this exit facet 42, these mirror posts 421 are vertical axis with the center line 44 of this exit facet 42, and with the angle (θ angle) of 44 one-tenth 65 ° to 80 ° of this center lines, the mirror post that forms a V font is arranged.When these light entrance face 41 these set mirror posts 421 are when being provided with aforementioned angle, after the light that LED is sent passes through the refraction of these mirror posts 421 and this front shroud 30, produce the projection surface that a light is evenly distributed, even if on the vertical angle of view, change to some extent, the mapping that it throwed still evenly and not change (see also LED traffic lights light belt and change visual simulation figure, Figure 12 D～Figure 12 F).If this arrangement angles is not in aforementioned range, the light that then can produce the light and shade band shape that is taken place as Fig. 2 strip mirror post 13 distributes, and easy variation because of the vertical angle of view, the irregular variation that produces the displacement in vertical direction of light and shade band (sees also LED traffic lights light belt and changes visual simulation figure, Figure 12 A～Figure 12 C), its visual effect is not good on the one hand, then causes the inhomogeneous of traffic lights projection light face on the other hand.
See also Figure 12 A～Figure 12 F, this LED traffic lights light belt is changed visual simulation figure specify as follows: (1) Figure 12 A: θ angle=90 degree; Visual angle=vertical 0 degree, level 0 degree; Result: form the light blanking bar and be spaced; (2) Figure 12 B: θ angle=90 degree; Visual angle=vertical-2.5 degree, level 0 degree; Result: form the light blanking bar and be spaced; (3) Figure 12 C: θ angle=90 degree; Visual angle=vertical-5 degree, level 0 degree; Result: form the light blanking bar and be spaced; (4) Figure 12 D: θ angle=75 degree; Visual angle=vertical 0 degree, level 0 degree; Result: form picture and penetrate evenly distributed projection; (5) Figure 12 E: θ angle=75 degree; Visual angle=vertical-2.5 degree, level 0 degree; Result: form picture and penetrate evenly distributed projection; (6) Figure 12 F: θ angle=75 degree; Visual angle=vertical-5 degree, level 0 degree; Result: form picture and penetrate evenly distributed projection.
On the other hand, these mirror posts 421 can five is one group, and be connected into an arc-curved part 4222 mutually in edge's bending of this emergent light face, and form a mirror post group 422, respectively the mirror post of these post mirror group central authorities is a central mirror post 4221, the position that is provided with of this central authorities' mirror post 4221 can be corresponding to arrangement position and the angle (θ angle) (seeing also Fig. 9) of this LED 51, produces to make respectively that this LED has the effect that several cut apart picture.This mirror post group 422 also more odd number mirror post be one group, but the post of single mirror post wide should transfer thereupon narrow so that each mirror post group can be arranged corresponding to the LED of each row.Can further be provided with a plurality of circular arc mirror posts 423 and a plurality of roundlet convex lens 424 on the minute surface that the side edge of those mirror post groups 422 and this exit facet 42 is touched, so that the part of non-mirror post 421 still can provide suitable light refraction with these roundlet convex lens 424 by these circular arc mirror posts 423 on the minute surface, to keep the circular boundary of traffic signals ray cast.
See also Figure 10, be the optical path schematic side view of the utility model embodiment through LED 51 irradiations.The light of being launched by this LED 51, at first the light entrance face 41 by this inner cover 40 enters this inner cover 40, this light further passes through the refraction of these exit facet 42 set mirror posts 421, wherein this LED 51 is the central mirror posts 4221 that correspond in each mirror post group 422, and the light angle that this LED 51 is launched just can be a mirror post group 422 and reflects.Therefore with the present embodiment is example, and a post mirror group 422 comprises 5 mirror posts 421, will produce 5 and cut apart and look like 53 after refraction, and these are cut apart, and to make single led seeming as 53 no longer be single mapping, cuts apart as 53 for its formed 5 to make the light face more even.The light that picture is cut apart in these formation is further entered in this front shroud 30 by the plane of incidence 31, enter the refraction of passing through set mirror piece on this plane of incidence 31 simultaneously, project by light-emitting face 32 after the refraction, the X-axis central authorities convergence forwards of these light that project 54 and asymmetry ground, but to oblique below deviation; So, the light that can overcome deflection top can't receive the defective that is produced because of road utilizes the people, and with the light of this part behind the deviation of oblique below, can increase whole luminosity simultaneously.
See also Figure 11, when being made minute surface near the plane, be second embodiment of the present utility model if the curvature mirror of each the mirror post 421 in each mirror post group 422 among Figure 10 dwindles.The mirror post group 432 formed of this mirror post 431 respectively in this example, behind its light refraction that this LED 51 is sent, between this inner cover 40 and this front shroud 30, do not form and cut apart picture, but cut apart picture 55 in the place ahead of this front shroud 30 formation, also can reach and cut apart the purpose that mapping makes single emitting led spot light homogenising.
Claims (7)
1, a kind of LED traffic lights is characterized in that, comprising:
One led light source, this led light source are to be coupled with a plurality of LED arranged evenly on the circuit board;
One front shroud, this front shroud comprises a plane of incidence and an emergent light face, and this plane of incidence is provided with a plurality of hexagonal mirror pieces that are, and each hexagon mirror piece is to become vertical mode with the parallel opposite side of one, on this plane of incidence, respectively this mirror piece on also be provided with a plurality of little minute surfaces simultaneously with the honeycomb arranged distribution; And
One inner cover, should in cover between described led light source and the described front shroud, this inner cover comprises a light entrance face and an exit facet, wherein this exit facet is arranged evenly a plurality of mirror posts, described mirror post is a vertical axis with this exit facet center line, and becomes 65 ° to 80 ° angle with this center line.
2, LED traffic lights as claimed in claim 1 is characterized in that, respectively the vertical and horizontal curvature mirror of this mirror piece is identical.
3, LED traffic lights as claimed in claim 1 is characterized in that, respectively the vertical and horizontal curvature mirror of this mirror piece is different.
As claim 2 or 3 described LED traffic lights, it is characterized in that 4, respectively set its vertical and horizontal curvature mirror of this little minute surface of this mirror piece is identical.
As claim 2 or 3 described LED traffic lights, it is characterized in that 5, respectively set its vertical and horizontal curvature mirror of this little minute surface of this mirror piece is different.
6, LED traffic lights as claimed in claim 1, it is characterized in that, described mirror post is one group with five, and be connected into an arc-curved part mutually in edge's bending of this emergent light face, and form a mirror post group, respectively the mirror post of these post mirror group central authorities is a central mirror post, this central authorities' mirror post the arrangement position of position corresponding to this LED be set.
7, LED traffic lights as claimed in claim 6 is characterized in that, further are provided with a plurality of circular arc mirror posts and a plurality of roundlet convex lens on the minute surface that the side edge of described mirror post group and this emergent light face is touched.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200119587U CN2786420Y (en) | 2005-05-10 | 2005-05-10 | LED traffic signal lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200119587U CN2786420Y (en) | 2005-05-10 | 2005-05-10 | LED traffic signal lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2786420Y true CN2786420Y (en) | 2006-06-07 |
Family
ID=36774994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2005200119587U Expired - Fee Related CN2786420Y (en) | 2005-05-10 | 2005-05-10 | LED traffic signal lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2786420Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101968206A (en) * | 2010-05-10 | 2011-02-09 | 东莞市百分百科技有限公司 | Decoration light guide method, light guide plate and lamp |
| CN104766556A (en) * | 2014-01-03 | 2015-07-08 | 深圳市海洋王照明工程有限公司 | Indicator light for emergency exit |
| CN104766557A (en) * | 2014-01-03 | 2015-07-08 | 深圳市海洋王照明工程有限公司 | Emergency exit indication board |
| CN110145708A (en) * | 2019-06-13 | 2019-08-20 | 周翔 | A kind of coal mining tunnel lamp |
-
2005
- 2005-05-10 CN CNU2005200119587U patent/CN2786420Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101968206A (en) * | 2010-05-10 | 2011-02-09 | 东莞市百分百科技有限公司 | Decoration light guide method, light guide plate and lamp |
| CN101968206B (en) * | 2010-05-10 | 2015-09-09 | 东莞市百分百科技有限公司 | Decoration light-guiding method, light guide plate and light fixture |
| CN104766556A (en) * | 2014-01-03 | 2015-07-08 | 深圳市海洋王照明工程有限公司 | Indicator light for emergency exit |
| CN104766557A (en) * | 2014-01-03 | 2015-07-08 | 深圳市海洋王照明工程有限公司 | Emergency exit indication board |
| CN110145708A (en) * | 2019-06-13 | 2019-08-20 | 周翔 | A kind of coal mining tunnel lamp |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060607 Termination date: 20110510 |