CN201121837Y - Wide light evening light source module - Google Patents
Wide light evening light source module Download PDFInfo
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- CN201121837Y CN201121837Y CNU2007201925363U CN200720192536U CN201121837Y CN 201121837 Y CN201121837 Y CN 201121837Y CN U2007201925363 U CNU2007201925363 U CN U2007201925363U CN 200720192536 U CN200720192536 U CN 200720192536U CN 201121837 Y CN201121837 Y CN 201121837Y
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- light source
- reflection
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Abstract
The utility model provides a wide-range even light backlight module. One or a plurality of module(s) can be combined and arranged inside a lamphouse to serve as a light source. The wide-size even light backlight module consists of a straight tube light source, a multiple reflecting surface even light reflecting plate, and an even light reflecting shade, wherein, the multiple reflecting surface even light reflecting plate consists of a mirror reflection area, a mirror diffusion mixing reflection area and a scattered reflection area from the central line to the two sides, each reflection area consists of one and more than one reflecting surface positioned at the lower part of the straight tube light source; the even light reflecting shade is positioned on the upper part of the straight tube light source and is provided with a rhomboidal transmission hole, the periphery has multiple-layer tooth forms which are scattered randomly, the surface facing to the light source surface is a mirror reflection surface, the surface facing to the display surface is a scattered reflection surface. The design of the three areas solves the problems of the distribution and the control of the reflected light. The even light reflecting shade ensures that the reflected ray can be reflected crossways in the distance and the ray becomes softer. The effective ray operating factor of the module is up to about 90 percent, the wide range is up to 500 to 600 millimeters, the illumination evenness degree is up to more than 90 percent and the width of an illuminated advertisement box is controlled within 70 to 50 millimeters.
Description
Technical field
The utility model relates to a kind of direct-light-type backlight module, the particularly a kind of combination of individual module or many pack modules is installed in made the advertising lamp box light source and used in lamp box or the wide cut lamp box, and can make that advertising lamp box is energy-conservation, brightness is high, the wide light evening light source module of good evenness.
Background technology
Along with expanding economy, advertising lamp box has become a kind of media format and has been widely used, street, lane, market, supermarket, various sales exhibition, exhibition, exhibition etc., be unable to do without advertising lamp box, the enormous amount of used advertising lamp box, but existing most of lamp box everywhere, the utilization rate of its light is very low, therefore cause a large amount of wastes of the energy, and the illumination uniformity of picture is also very poor, has directly influenced the result of use of advertising lamp box.
The light source technology now and the performance of reflecting material have all reached very high level, 36wT8 fluorescent tube (Philip three primary colours) its luminous flux long as a 1200mm is 3250Lm, calculate according to 90% utilization rate, can provide the average light that reaches 4875Lux to shine at the display surface back of 1200mm * 500mm.That is to say that (to be 200mm～250mm) use the fluorescent tube number to reach 50%～60% guaranteeing should reduce under the high brightness situation to the lamp spacing to existing a lot of lamp box, even more.Because of prior art can't solve the difficult problem that light is spared in the efficient reflection of wide format, so the problem that the lamp box light utilization is low, energy waste is big can not get good solution always.
Patent No. CN200420117731.6 " shadow shield " provides a kind of shadow shield that the advertising lamp box optical illumination uniformity is used that improves, but the structural design of this shadow shield just is used for blocking the direct projection light of light source, be not suitable for the reflecting plate of wide format, especially the wide format reflecting plate of tubule footpath light source.And this shadow shield requires to have the location of degree of precision, and deviation among a small circle also causes tangible light and shade to change easily on display surface, and promptly installing badly can influence the illumination uniformity.
" the reflection dodging device of straight pipe type light source " of number of patent application CN200720110837.7 also proposed the reflection dodging device of the straight pipe type light source of a kind of thin thickness that can make advertising lamp box, effective, energy saving.But in actual applications, find to also have certain limitation on its structure, because of even light shield is irregularly shaped, can increases manufacture difficulty and installation accuracy is required than higher, thereby strengthen the difficulty of work.
Summary of the invention
Technical problem to be solved in the utility model is: provide that a kind of simple in structure, fabrication and installation are convenient, light utilization is high, illumination good evenness, breadth are wide, the wide light evening light source module of thin thickness.Use with the supporting light source of doing of advertising lamp box.
The utility model is to address the above problem the technical scheme that is adopted: wide light evening light source module, comprise the straight pipe type light source, many foldings face is spared light reflecting board, even light reflecting cover, wherein the even light reflecting board of many foldings face is positioned at the below of straight pipe type light source, by a left side, the right side is symmetrical in two and plural plane of reflection composition of light source center line, the even light reflecting board of described many foldings face is on a left side, the below, protruding crestal line place of right symmetry forms the α angle, and the α angle is an acute angle, adjacent angle of all the other each planes of reflection is the obtuse angle except that the α angle, the even light reflecting board of described many foldings face from alignment both sides, center respectively by the minute surface echo area, mirror overflows the mixed reflection district, the diffuse reflection district forms, and described each echo area is made up of one and more than one reflecting surface; Described even light reflecting cover is positioned at the top of straight pipe type light source, has rhomboidal beam orifice on it, and the edge is a multilayer height profile of tooth straggly, is mirror reflection surface towards surface of light source, is diffuse surface towards display surface.
Compared with prior art, advantage of the present utility model is: the reflecting surface of the even light reflecting board of many foldings face is made up of minute surface echo area, the casual mixed reflection district of mirror and three echo areas, diffuse reflection district, setting up of three districts can effectively solve distribution of reflected light, a control difficult problem, even the wide cut reflecting plate also can guarantee the display surface illumination uniformity.
In addition, the design of even light reflecting cover also has tangible advantage, it is towards the mirror reflection surface of surface of light source, can effectively reflex to light on light source even light reflection surface far away, and can make display surface illumination softer towards the diffuse surface of display surface, top beam orifice monomer size is bigger, easier manufacturing processing, and the beam orifice of long water chestnut shape is less demanding to the installation accuracy of even light reflecting cover, its edge is the sharp tooth design straggly of multilayer height, make reflection ray crossed reflex a long way off to make light softer that design has the even light reflecting cover of arc groove can make its location faster simple.
Because of having taked above-mentioned measure, the effective utilization rate of light of backlight module reaches about 90%, so wide cut reaches the consumption that 500～600mm can reduce the light source fluorescent tube, thereby reach purpose of energy saving, backlight module can singlely use, also can a plurality of uses arranged side by side form the large format backlight, also but the ranks interleaved set becomes super large breadth backlight, the thickness of advertising lamp box can be controlled between 70mm (using the T8 fluorescent tube)～50mm (using the T5 fluorescent tube), this module is installed in the advertising lamp box, and the illumination uniformity of its display surface also can reach more than 90% under the situation of not using softbox.
Description of drawings
Fig. 1, axle side schematic diagram of the present utility model.
Fig. 2, cross section structure schematic diagram of the present utility model.
Fig. 3, light path principle schematic diagram of the present utility model.
Fig. 4, wide cut embodiment cross section structure schematic diagram figure of the present utility model.
The partial enlarged drawing embodiment one in Fig. 5, the casual mixed reflection district of mirror of the present utility model.
The partial enlarged drawing embodiment two in Fig. 6, the casual mixed reflection district of mirror of the present utility model.
Fig. 7, even light reflecting cover of the present utility model cooperate schematic diagram embodiment one with light source.
Fig. 8, even light reflecting cover of the present utility model cooperate schematic diagram embodiment two with light source.
Fig. 9, even light reflecting cover partial structurtes schematic diagram embodiment one of the present utility model.
Figure 10, even light reflecting cover partial structurtes schematic diagram embodiment two of the present utility model.
Figure 11, the utility model use schematic diagram side by side.
Figure 12, the staggered schematic diagram that uses of the utility model ranks.
Figure 13, the utility model user mode reference diagram (being installed in the lamp box).
The specific embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is further described.
Backlight module adopts straight pipe type light source 2, is fluorescent lamp T8, T5, EEFL, CCFL etc.
Many foldings face is spared light reflecting board 4,4 ' the be positioned at below of straight pipe type light source 2.
Many foldings face is spared light reflecting board 4,4 ' be made up of the left and right a plurality of planes of reflection that are symmetrical in the light source center line, below the protruding crestal line place of left and right symmetry, form the α angle, and the α angle is an acute angle, the even light reflecting board of many foldings face is except that the α angle, adjacent angle of all the other each planes of reflection is the obtuse angle, and respectively reflecting plate is divided into the minute surface echo area from alignment both sides, center, mirror overflows the mixed reflection district, the zone of three symmetries in diffuse reflection district.
Minute surface echo area wherein: form by two mirror reflection surface 51,52 that specular material is made.
Mirror overflows the mixed reflection district: be made into by specular material and diffuse-reflective material, by mirror reflection surface, diffuse surface at interval, composite mixed reflection face forms.
Diffuse reflection district: form by three diffuse surfaces 71,72,73 that diffuse-reflective material is made.
Embodiment 1: the reflecting plate of suitable normal breadth.
Mirror overflows the mixed reflection district, only form by a mixed reflection face 61,62,63, promptly in the both sides of mirror reflection surface 62 respectively inwardly by close to the diffuse surface of dredging, stick on an edge even striation 61,63 formations of diffuse reflection that are multilayer sharp-tooth shaped straggly, as Fig. 2, shown in Figure 5.
Or the diffuse surface (figure draws) that constitutes by the diffuse reflection bar of site or many strips.
Embodiment 2: be applicable to the wide format reflecting plate.
Increase the width in the casual mixed reflection district of mirror, in former mixed reflection face 61,62,63, add the even striation 64 of one or more than one diffuse reflections, also can with the width of the even striation 63 of diffuse reflection suitable be widened to 63 ', formation mixed reflection face 61,621,64,622,63 ', as Fig. 4, shown in Figure 6, can make the display surface illumination of wide format reflecting plate more even.
As shown in Figure 3, the part light that sends from light source is reflexed to respectively on light source 2 diffuse surface 71,72,73 far away through 51,52,62 minute surface reflection, is diffused into display surface 1 again.Even light reflecting cover 3 is regulated the light quantity of light source direct projection to display surface 1 by beam orifice, and with the mirror reflection surface of part light on even light reflecting cover, reflex to the even light reflecting board 4 of many foldings face on straight pipe type light source 2 reflecting surface far away, reflex to display surface 1 again, and the profile of tooth that the multilayer of even light reflecting cover height is straggly, can effectively regulate near the influence of the reflection ray of light source to display surface, the diffuse surface 61,63 in the casual mixed reflection district of mirror changes the further illumination uniformity of adjustment display surface 1 by its density.
Even light reflecting cover 3,3 ' towards surface of light source is a mirror reflection surface, is diffuse surface towards display surface 1.
Even light reflecting cover 3 is smooth strip, is positioned at straight pipe type light source 2 tops, and little gap is arranged between light source or directly abuts on the straight pipe type light source 2, and two ends are fixed on the lamp box 9.
There is an arc groove that raises up even light reflecting cover 3 ' centre, the radian of the arc groove on the described mirror reflection surface is consistent with straight pipe type light source 2 surperficial radians, the width of arc groove is less than the diameter of straight pipe type light source, and arc groove makes even light reflecting cover 3 ' can be simply, quick, location be convenient to installation.
The long water chestnut circular arc of beam orifice 31 on the even light reflecting cover 3 ' be shaped as, its edge 32 ' be the height curved tooth shape straggly more than four layers and four layers.
Pointed tooth, curved tooth and beam orifice on even light reflecting cover 3 its edges all are symmetrical in even light reflecting cover center line and distribute.
Two and the use arranged side by side of plural the utility model can become the large format backlight, as shown in figure 11.
The staggered use of two and plural the utility model ranks can be formed super large breadth backlight, as shown in figure 12, the fluorescent tube head 21 of two row connecting place straight pipe type light sources 2 wherein, all can insert under the even light reflecting board 4 of many foldings face or 4 ' seam between other delegation two pack modules, eliminate seam shade in the ranks.
The user mode reference diagram of the utility model in lamp box 9, as shown in figure 13.Ballast or power supply 8 can be placed in the space under even light reflecting board 4 seams of the many foldings face between two groups of wide light evening light source modules, make full use of lamp box 9 volume inside, the framework thickness of lamp box 9 can be controlled between 70mm (using the T8 fluorescent tube)～50mm (using the T5 fluorescent tube), and the illumination uniformity of display surface 1 can reach more than 90% under the situation of not using softbox.
Claims (9)
1, a kind of wide light evening light source module, comprise straight pipe type light source (2), many foldings face is spared light reflecting board, even light reflecting cover, wherein the even light reflecting board of many foldings face is positioned at the below of straight pipe type light source (2), by a left side, the right side is symmetrical in two and plural plane of reflection composition of light source center line, the even light reflecting board of described many foldings face is on a left side, the below, protruding crestal line place of right symmetry forms the α angle, and the α angle is an acute angle, adjacent angle of all the other each planes of reflection is the obtuse angle except that the α angle, it is characterized in that described many foldings face spares light reflecting board, from alignment both sides, center respectively by minute surface echo area (51,52), mirror overflows the mixed reflection district, diffuse reflection district (71,72,73) form, described each echo area is made up of one and more than one reflecting surface; Described even light reflecting cover is positioned at the top of straight pipe type light source (2), has rhomboidal beam orifice on it, and the edge is a multilayer height profile of tooth straggly, is mirror reflection surface towards surface of light source, is diffuse surface towards display surface (1).
2, straight wide light evening light source module according to claim 1, it is characterized in that the minute surface echo area: form by two mirror reflection surface (51,52) that specular material is made, mirror overflows the mixed reflection district: be made into by specular material and diffuse-reflective material, form the diffuse reflection district by mirror reflection surface, diffuse surface interval, composite mixed reflection face: form by three diffuse surfaces (71,72,73) that diffuse-reflective material is made.
3, wide light evening light source module according to claim 1 and 2, it is characterized in that mirror overflows the mixed reflection district, only form by a mixed reflection face (61,62,63), in the both sides of mirror reflection surface (62) respectively inwardly by close to the diffuse surface of dredging, stick on an edge even striation (61, the 63) formation of diffuse reflection that is multilayer sharp-tooth shaped straggly.
4, wide light evening light source module according to claim 3, it is characterized in that in mixed reflection face (61,62,63), add the even striation (64) of one or more than one diffuse reflections or widen even striation (63) formation of former diffuse reflection mixed reflection face (61,621,64,622,63 ').
5, wide light evening light source module according to claim 1 is characterized in that even light reflecting cover (3) is smooth strip, and between straight pipe type light source (2) little gap is arranged or abut in, and two ends are fixed on the lamp box (9).
6, wide light evening light source module according to claim 1, it is characterized in that in the middle of the even light reflecting cover (3 ') arc groove that raises up being arranged, the radian of the arc groove on the described mirror reflection surface is consistent with the surperficial radian of straight pipe type light source (2), and the width of arc groove is less than the diameter of straight pipe type light source (2).
7, wide light evening light source module according to claim 1, it is characterized in that long water chestnut polygon beam orifice (31) or long water chestnut circular arc beam orifice (31 ') are arranged on the even light reflecting cover (3), its edge (32) is the height sharp tooth straggly more than four layers and four layers, or edge (32 ') are the height curved tooth shape straggly more than four layers and four layers.
8, wide light evening light source module according to claim 1 is characterized in that two and plural wide light evening light source module, and arranged side by side or ranks are staggered to the large format backlight.
9, wide light evening light source module according to claim 1 is characterized in that ballast or power supply (8) are placed in the space under even light reflecting board (4) seam of two groups of many foldings faces between the wide light evening light source module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201925363U CN201121837Y (en) | 2007-11-23 | 2007-11-23 | Wide light evening light source module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201925363U CN201121837Y (en) | 2007-11-23 | 2007-11-23 | Wide light evening light source module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201121837Y true CN201121837Y (en) | 2008-09-24 |
Family
ID=40009064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201925363U Expired - Fee Related CN201121837Y (en) | 2007-11-23 | 2007-11-23 | Wide light evening light source module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201121837Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009070981A1 (en) * | 2007-11-23 | 2009-06-11 | Junbo Liu | Wide light evening backlight source module and backlight source using the same |
| TWI615581B (en) * | 2017-07-14 | 2018-02-21 | 達運精密工業股份有限公司 | Light reflective cover and illumination apparatus having the same |
| CN111308783A (en) * | 2020-03-25 | 2020-06-19 | 深圳市隆利科技股份有限公司 | LED backlight device and display equipment |
-
2007
- 2007-11-23 CN CNU2007201925363U patent/CN201121837Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009070981A1 (en) * | 2007-11-23 | 2009-06-11 | Junbo Liu | Wide light evening backlight source module and backlight source using the same |
| TWI615581B (en) * | 2017-07-14 | 2018-02-21 | 達運精密工業股份有限公司 | Light reflective cover and illumination apparatus having the same |
| CN111308783A (en) * | 2020-03-25 | 2020-06-19 | 深圳市隆利科技股份有限公司 | LED backlight device and display equipment |
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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: 20080924 Termination date: 20111123 |