CN208886415U - Truncated rectangular pyramids concave microstructure optical thin film/plate and LED light device - Google Patents
Truncated rectangular pyramids concave microstructure optical thin film/plate and LED light device Download PDFInfo
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- CN208886415U CN208886415U CN201821792920.1U CN201821792920U CN208886415U CN 208886415 U CN208886415 U CN 208886415U CN 201821792920 U CN201821792920 U CN 201821792920U CN 208886415 U CN208886415 U CN 208886415U
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Abstract
The utility model provides a kind of truncated rectangular pyramids concave microstructure optical thin film/plate and LED light device.The one side of the optical thin film/plate has the recessed portion of periodic arrangement, the recessed portion is in inverted truncated rectangular pyramids shape, the cycle length of the recessed portion of periodic arrangement is 0.15 millimeter -2.05 millimeters, the bottom surface side length of the truncated rectangular pyramids is 0.1 millimeter -2 millimeters, the inclined surface of the truncated rectangular pyramids and the included angle of bottom surface are 30 ° -40 °, and the depth of the recessed portion is 0.05 millimeter -0.2 millimeter.The utility model is adjusted the concentration optics output of LED light source using concave microstructure optical thin film/plate, to reduce UGR again while meeting and illuminating light distribution, improves dazzle situation.
Description
Technical field
The utility model belong to field of LED illumination more particularly to a kind of truncated rectangular pyramids concave microstructure optical thin film/plate with
And with optical thin film/plate LED light device.
Background technique
Semiconductor photo diode, as a kind of energy-saving and environment-friendly new type light source, comprising Organic Light Emitting Diode (OLED,
Light Emitting Diode) and inorganic light-emitting diode (LED, Light Emitting Diode), more and more widely
Applied to general illumination environment.LED is applied in existing illumination, brightness, efficiency, service life, color needed for having general lighting
Temperature and white point stability.Therefore, this kind of LED, including road surface, parking area are all used in most general lighting application designs
And indoor directional lighting.In such applications, due to Maintenance free (service life of LED is more much longer than conventional bulb)
And low energy consumption, so LED based lighting device reduces the total cost of ownership (TCO).Illumination level LED has at least 50,000
Efficient, the directional lighting of hour.It is more than all incandescent lamps and halogen using lighting system effect that the advantages of illumination level LED is designed
Plain lamps and lanterns, service life extend 5 to 50 times, reduce the influence to environment, not mercurous, power station pollution is small, garbage disposal expense is low.
To, LED light device is just more and more widely used (in the case where not particularly pointing out herein, it is preceding address it is aftermentioned
" LED light device " includes having the lighting device of inorganic light-emitting diode LED and with Organic Light Emitting Diode OLED
Lighting device).
In order to adapt to the different lighting demands of various environment, need to utilize secondary or multiple optics in LED light device
Control device changes the output of its optics to meet the lighting demand of different application scene.For example, street lamp since lamp stand spacing is big and
Optical lens or optical reflector are designed using large angle illumination, market illumination because to show commodity especially and to optical lens or
Optical reflector uses low-angle Lighting Design, and working environment is due to needing soft uniform light distribution and to optical lens or light
Reflector is learned using droplet-shaped illumination optical design etc..I.e. different illumination optical environment needs to design optics control of different shapes
Device processed.Secondary or multiple optical control device is usually various optical lenses and optical reflector etc..As shown in Figure 1
Printed circuit board 3 is arranged in shell 1, at least one LED chip 2, secondary optics are arranged on printed circuit board 3 for LED light device
Control device is optical lens 10, is located at 2 top of LED chip, and LED chip is enclosed in shell 1 by the cover 4.
In addition, in order to adapt to different LED light sources (i.e. it is variant that LED particle size, encapsulation and LED go out light characteristic),
Need to separately design various sizes of optical lens or optical reflector also to match with corresponding LED light source.Therefore, work as LED
Light source generate variation after, can not be continued to use for the secondary or multiple optical control device of a certain LED design, it is secondary or
The poor universality of the multiple optical control device of person needs to redesign and manufacture secondary or multiple optical control device, thus
The cost for substantially increasing LED light device limits the extensive use of LED.
Further, since the optics output that LED light source is concentrated causes the surface brightness of LED light device very high, eyes exist
When encountering light or very dark bias light strongly in the visual field, visibility can be caused to reduce, so that being difficult to see object clearly, also
Eyes can be caused to shed tears, pain or even blepharospasm etc., optically, we measure indoor view using type unified glare value UGR
Feel that the light of the lighting device sending in environment causes the parameter at heart of discomfort subjective response to human eye, magnitude passes through CIE
Type unified glare value formula is calculated:
Wherein, LbFor the brightness of background in the visual field, L is the brightness of lamps and lanterns in the visual field, and ω and ρ are that lamps and lanterns light enters respectively
The angle of eyes and coefficient relevant to lamps and lanterns arrangement position.As can be seen that UGR is because of " within sweep of the eye " lamp from formula
Have, i.e. L/L strong with the comparison of backgroundbBigger, the visual experience of people will be more uncomfortable.Usual UGR is with 3 ranks, sense
The upper corresponding relationship of official such as table 1.
Table 1
UGR has apparent effect for the psychology of people as can be seen from the above table, affects the mood of people, this shadow
Sound constrains the extensive use of LED.The value of UGR is bigger, and it is stronger to illustrate that lamps and lanterns within the vision are compared with background luminance, makes
People feels uncomfortable, when UGR value is 19 and following (international standard), can enhance the comfort of people.
The reduction of UGR, i.e. antiglare effect are heavily dependent on the optical design of lamps and lanterns.
Therefore, it needs a kind of to can adapt in different LED light sources and the lighting demand of different application scene and meet UGR value
High light efficiency LED illuminating apparatus lower than 19.
Utility model content
Based on this, in view of the above technical problems, a kind of truncated rectangular pyramids concave microstructure optical thin film/plate is provided and LED shines
Bright device.
In order to solve the above technical problems, the utility model adopts the following technical solution:
A kind of truncated rectangular pyramids concave microstructure optical thin film/plate, the one side of the optical thin film/plate have periodically row
The recessed portion of column, the recessed portion are in inverted truncated rectangular pyramids shape, and the cycle length of the recessed portion of periodic arrangement is 0.15 milli
- 2.05 millimeters of rice, the bottom surface side length of the truncated rectangular pyramids are 0.1 millimeter -2 millimeters, the inclined surface of the truncated rectangular pyramids and the folder of bottom surface
Angle angle is 30 ° -40 °, and the depth of the recessed portion is 0.05 millimeter -0.2 millimeter.
Preferably, the cycle length is 0.15 millimeter -1.55 millimeters, the bottom surface side lengths of the truncated rectangular pyramids is 0.1 millimeter -
1.5 millimeters, the included angle is 32 ° -38 °, and the depth of the recessed portion is 0.05 millimeter -0.2 millimeter.
Preferably, the cycle length is 0.15 millimeter -1.05 millimeters, the bottom surface side lengths of the truncated rectangular pyramids is 0.1 millimeter -
1 millimeter, the included angle is 33 ° -37 °, and the cup depth of the recessed portion is 0.05 millimeter -0.2 millimeter.
Preferably, the cycle length is for the bottom surface side length and between the quadrangle of orientation adjacent depression bottom surface
The sum of spacing.
The utility model further relates to a kind of LED light device, with truncated rectangular pyramids concave microstructure optical thin film/plate.
The utility model LED light device includes shell, and printed circuit board in the shell is arranged, and is arranged in printed circuit
At least one LED chip on plate, the LED drive power being electrically connected at least one described LED chip, and by LED chip
The outer surface of the cover is arranged in the cover of envelope in the shell, the optical thin film/plate.
The utility model LED light device further includes being attached at a part of the printed circuit board and/or the shell
On reflective optical films/plate.
The utility model is adjusted the concentration optics output of LED light source using concave microstructure optical thin film/plate,
To reduce UGR again while meeting and illuminating light distribution, dazzle situation is improved.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of existing LED light device；
Fig. 2 is the structural schematic diagram of the LED light device of preferred embodiment according to the present utility model, wherein (a) is straight
Following formula, it is (b) illuminated for side；
Fig. 3 is optical thin film/plate overlooking structure diagram of the utility model；
Fig. 4 is optical thin film/plate side structure schematic view of the utility model；
Fig. 5 is that the optics of existing concave microstructure optical thin film/plate exports distribution schematic diagram (a) and the utility model four
Terrace with edge concave microstructure optical thin film/plate optics exports the comparison of distribution schematic diagram (b)；
Fig. 6 is that the optics of existing concave microstructure optical thin film/plate exports dazzle value UGR (a) and the utility model
Optics exports the comparison of dazzle value (b).
Specific embodiment
In conjunction with following specific embodiments and attached drawing, the utility model is described in further detail.
In Fig. 2,1 expression shell, 2 expression LED chips, 3 expression printed circuit boards, 4 expression the covers, 5 expression optical thin films/
Plate, 6 indicate recessed portion, and 7 indicate reflective optical films/plate, and 8 indicate light guide plate.
As shown in Fig. 2, the LED light device of the utility model includes shell 1, the printed circuit board in shell 1 is set
3, at least one LED chip 2 on printed circuit board 3, the LED drive power being electrically connected at least one LED chip 2 are set
(not shown), and LED chip 2 is enclosed in the cover 4 in shell 1, the outer surface of the cover 4 is arranged in optical thin film/plate 5,
To control the lighting requirement that the optics output of LED chip 2 reaches specific application scene.Lighting device is different according to light source position,
Straight-down negative can be divided into and side is illuminated.In Fig. 2, (a) is straight-down negative, i.e. chip 2 is located on the PCB3 of 1 bottom of shell；It (b) is side
It is illuminated, i.e. the side that is located at shell 1 of chip 2.
Specifically, shell 1 is high heat dissipation die casting aluminium material, die casting or extrusion molding, has good heat dissipation performance.Printing
The quantity for the LED chip 2 being arranged on circuit board 3 can be one or more.LED chip 2 can be high-power, middle power or small
Power patch chip, and can be in parallel or go here and there and the mode patch that combines is on printed circuit board 3 using series connection.Printing
Circuit board 3 is matched with direct current driving power supply, and driving LED chip 2, which shines, reaches illuminating effect.
Wherein, as shown in Figure 3 and 4, the one side of optical thin film/plate 5 has the recessed portion 6 of periodic arrangement, recessed
Concave portion 6 is in inverted truncated rectangular pyramids shape, and the cycle length of the recessed portion of periodic arrangement is 0.15 millimeter -2.05 millimeters, described
The bottom surface side length of truncated rectangular pyramids is 0.1 millimeter -2.0 millimeters, and the inclined surface of truncated rectangular pyramids and the included angle of bottom surface are 30 ° -40 °, institute
The depth for stating recessed portion is 0.05 millimeter -0.2 millimeter.Above-mentioned cycle length is that the bottom surface side length is adjacent recessed with along orientation
The sum of spacing between the quadrangle of concave portion bottom surface.Cup depth refers to the top surface of recessed portion to the distance of bottom surface.Here, bottom surface is
Refer to the biggish one side of area, top surface refers to the lesser one side of area.
The utility model is adjusted the concentration optics output of LED light source using concave microstructure optical thin film/plate,
To reduce UGR (the UGR index for meeting international standard) again while meeting and illuminating light distribution, dazzle situation is improved.
Fig. 5 is that the optics of existing concave microstructure optical thin film/plate exports distribution schematic diagram (a) and the utility model four
Terrace with edge concave microstructure optical thin film/plate optics exports the comparison of distribution schematic diagram (b).Dark solid in figure is sky
Between middle 0-180 degree section the surface of intensity distribution, light solid line be space in 90-270 degree section the surface of intensity distribution.Annulus be etc.
Light distribution annulus, luminous intensity unit are candela (cd), and the ray across annulus is angularly line, the unit degree of being of angle
(degree), 0 degree is lamps and lanterns following location directly.It is exported according to the optics of Fig. 5 and is compared shown in distribution schematic diagram, the utility model
This optical profile antiglare effect more preferably, be suitably applied in office, supermarket, the scenes such as market, light is soft, and illuminance of ground is non-
Often uniformly.
Fig. 6 is that the optics of existing concave microstructure optical thin film/plate exports dazzle value UGR (a) and the utility model
Optics exports the comparison of dazzle value (b).Ceiling/metope/ground surface reflectance indoors is indicated by the numerical value of box label in figure
For 0.7/0.5/0.2, when the length and width in room are 4Hx8H, the UGR value of entire LED light device, by data it is found that this is practical new
UGR value can be reduced to 18.3 by existing 19.1 by type LED light device, and antiglare effect is optimized.
Wherein, H is height of the human eye to ceiling, and standard is 2 meters, and 4Hx8H is exactly 8 meters of single spaces for multiplying 16 meters.
It is highly preferred that the cycle length is 0.25 millimeter -1.55 millimeters in the utility model, the truncated rectangular pyramids recess
The bottom surface side length in portion is 0.1 millimeter -1.5 millimeters, and the included angle is 32 ° -38 °, and the depth of the recessed portion is 0.05 milli
- 0.2 millimeter of rice.
It is further preferred that the cycle length is 0.25 millimeter -1.05 millimeters, described tetragonous in the utility model
The bottom surface side length of platform recessed portion is 0.1 millimeter -1.0 millimeters, and the included angle is 33 ° -37 °, and the recess of the recessed portion is deep
Degree is 0.05 millimeter -0.2 millimeter.
Optical thin film/the plate 5 of the utility model with a thickness of 0.1 millimeter -3.0 millimeters, wherein 0.5 millimeter -1.8 millimeters
In range more preferably.The production of thin microstructured optical films/plate can be all made to process lower than this range or higher than this range
It becomes difficult, the difficulty for causing large-scale processing to produce increases.
The material of optical thin film/plate 5 can be various optically transparent plastic polymer materials, and be added additive with
Reach better material property.Plastic polymer material include PET (polyethylene terephthalate), PC (polycarbonate),
PMMA (polymethyl methacrylate), PS (polystyrene), PP (polypropylene), PMS (copolymerization styrene-methyl methacrylate)
With PEI (PolyEtherImide).Diffusion material can also be added in the material of thin microstructured optical films and plate to meet difference
Optical demands.
As shown in Fig. 2, the utility model LED light device can further include other optical reflectance coatings, reflector,
Reflectance coating and reflection chamber etc. further increase the optical efficiency of system.Such as the one of printed circuit board 3 and/or shell 1
Reflective optical films/plate 7 is attached on part.
The truncated rectangular pyramids concave microstructure optical thin film/plate and LED light device of the utility model are not only adapted to LED
Lighting Design is also applied for other various light sources, such as fluorescent lamp, high-pressure sodium lamp or other similar optical application.
But those of ordinary skill in the art it should be appreciated that more than embodiment be intended merely to illustrate this
Utility model, and being not used as the restriction to the utility model, if in the spirit of the utility model, to
Variation, the modification of the upper embodiment will all be fallen in the Claims scope of the utility model.
Claims (7)
1. a kind of truncated rectangular pyramids concave microstructure optical thin film/plate, which is characterized in that a mask of the optical thin film/plate
There is the recessed portion of periodic arrangement, the recessed portion is in inverted truncated rectangular pyramids shape, and the period of the recessed portion of periodic arrangement is long
Degree is 0.15 millimeter -2.05 millimeters, and the bottom surface side length of the truncated rectangular pyramids is 0.1 millimeter -2 millimeters, the inclined surface of the truncated rectangular pyramids
Included angle with bottom surface is 30 ° -40 °, and the depth of the recessed portion is 0.05 millimeter -0.2 millimeter.
2. a kind of truncated rectangular pyramids concave microstructure optical thin film/plate according to claim 1, which is characterized in that the week
Phase length is 0.15 millimeter -1.55 millimeters, and the bottom surface side length of the truncated rectangular pyramids is 0.1 millimeter -1.5 millimeters, the included angle
It is 32 ° -38 °.
3. a kind of truncated rectangular pyramids concave microstructure optical thin film/plate according to claim 1, which is characterized in that the week
Phase length is 0.15 millimeter -1.05 millimeters, and the bottom surface side length of the truncated rectangular pyramids is 0.1 millimeter -1 millimeter, and the included angle is
33 ° -37 °, the cup depth of the recessed portion is 0.05 millimeter -0.2 millimeter.
4. a kind of truncated rectangular pyramids concave microstructure optical thin film/plate according to claim 1 or 2 or 3, which is characterized in that
The cycle length is the sum of the bottom surface side length and the spacing between the quadrangle of orientation adjacent depression bottom surface.
5. a kind of LED light device, which is characterized in that have the micro- knot of truncated rectangular pyramids of any of claims 1-4 recess
Structure optical thin film/plate.
6. a kind of LED light device according to claim 5, which is characterized in that including shell, print in the shell is arranged
At least one LED chip on a printed circuit is arranged in printed circuit board, the LED being electrically connected at least one described LED chip
The appearance of the cover is arranged in driving power, and the cover by LED chip envelope in the shell, the optical thin film/plate
Face.
7. a kind of LED light device according to claim 6, which is characterized in that further include being attached at the printed circuit
Reflective optical films/plate in a part of plate and/or the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821792920.1U CN208886415U (en) | 2018-11-01 | 2018-11-01 | Truncated rectangular pyramids concave microstructure optical thin film/plate and LED light device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821792920.1U CN208886415U (en) | 2018-11-01 | 2018-11-01 | Truncated rectangular pyramids concave microstructure optical thin film/plate and LED light device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208886415U true CN208886415U (en) | 2019-05-21 |
Family
ID=66517664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821792920.1U Active CN208886415U (en) | 2018-11-01 | 2018-11-01 | Truncated rectangular pyramids concave microstructure optical thin film/plate and LED light device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208886415U (en) |
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2018
- 2018-11-01 CN CN201821792920.1U patent/CN208886415U/en active Active
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