CN208832142U - Conic convex thin microstructured optical films/plate and LED light device - Google Patents

Abstract

The utility model provides a kind of conic convex thin microstructured optical films/plate and LED light device.LED light device includes shell, printed circuit board, at least one LED chip, LED drive power and the cover, it is characterized in that, it further include optical thin film/plate that the upper surface of the cover is set, the one side of the optical thin film/plate has the conical protrusions portion of periodic arrangement, the bottom surface radius in the conical protrusions portion is 0.1-2 millimeters, the corner angle in the conical protrusions portion is 85 ° -95 °, and the spacing between two neighboring bottom center, conical protrusions portion is 0.9 millimeter -2.9 millimeters.The utility model can the concentration optics output to LED light source be adjusted, thus the case where effectively improving dazzle while meeting illumination light distribution.

Description

Conic convex thin microstructured optical films/plate and LED light device

Technical field

The utility model belong to field of LED illumination more particularly to a kind of conic convex thin microstructured optical films/plate 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, L_bFor 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 background_bBigger, 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 is following, can enhance the comfort of people.

General lamp surface is made of diffuser plate and diffusion barrier, and effect is that the light for issuing LED carries out light mixing processing, Light is set to be well controlled.But the lamps and lanterns of flattening require the thickness of diffuser plate and diffusion barrier unsuitable blocked up, this is just needed pair The composition of LED lamp carries out simplifying processing.

Therefore, it needs a kind of to can adapt in different LED light sources and the lighting demand of different application scene and can overcome The LED light device of the high photosynthetic efficiency flattening of glare problem.

Utility model content

Based on this, in view of the above technical problems, a kind of conic convex thin microstructured optical films/plate and LED illumination are provided Device.

In order to solve the above technical problems, the utility model adopts the following technical solution:

The one side of a kind of conic convex thin microstructured optical films/plate, the optical thin film/plate has periodic arrangement Conical protrusions portion, the bottom surface radius in the conical protrusions portion is 0.1 millimeter -2 millimeters, the top in the conical protrusions portion Angle angle is 85 ° -95 °, and the spacing between bottom center, two neighboring conical protrusions portion is 0.9 millimeter -2.9 millimeters.

Preferably, the bottom surface radius in the conical protrusions portion is 0.3 millimeter -1.8 millimeters, the conical protrusions portion Corner angle is 87 ° -93 °, and the spacing between two neighboring bottom center, conical protrusions portion is 1.2 millimeters -2.6 millimeters.

Preferably, the bottom surface radius in the conical protrusions portion is 0.5 millimeter -1.5 millimeters, the conical protrusions portion Corner angle is 88 ° -92 °, and the spacing between two neighboring bottom center, conical protrusions portion is 1.4 millimeters -2.4 millimeters.

Preferably, the optical thin film/plate with a thickness of 0.1 millimeter -3.0 millimeters.

Preferably, the optical thin film/plate with a thickness of 0.5 millimeter -1.8 millimeters.

The utility model further relates to a kind of LED light device, micro- with the conic convex any one of described in claim 1-5 Feature optical 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.

Conic convex thin microstructured optical films/the plate of the utility model can the concentration optics to LED light source export into Row is adjusted, so that having conic convex thin microstructured optical films/plate LED light device that can meet UGR value Diffusion barrier is eliminated while below 19 again, saves material cost.

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 schematic diagram of the utility model；

Fig. 4 is that the optics of existing thin microstructured optical films/plate exports the circular cone that profiles versus schemes (a) and the utility model The contrast schematic diagram of optics output distribution schematic diagram (b) of raised thin microstructured optical films/plate；

Fig. 5 is that the optics of existing thin microstructured optical films/plate exports the optics of dazzle value UGR (a) and the utility model Export 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 conical protrusions portion, and 7 indicate reflective optical films/plate, and 8 indicate light guide plate.

As shown in Fig. 2, the present embodiment LED light device includes shell 1, the printed circuit board 3 in shell 1 is set, if Set at least one LED chip 2 on printed circuit board 3, the LED drive power being electrically connected at least one LED chip 2 (figure Do not show), 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, with control The optics output of LED chip 2 processed reaches the lighting requirement of specific application scene, adjusts to the concentration optics output of LED light source Section.Lighting device is different according to light source position, can be divided into straight-down negative and side is illuminated.In Fig. 2, (a) is straight-down negative, i.e. chip 2 On the PCB3 of 1 bottom of shell；(b) illuminated for side, 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, the one side of optical thin film/plate 5 has the conical protrusions portion 6 of periodic arrangement, circular cone The corner angle of shape lug boss 6 is 85 ° -95 °, and the bottom surface radius in conical protrusions portion 6 is 0.1 millimeter -2 millimeters, two neighboring The conical protrusions portion bottom surface center of circle between spacing be 0.9 millimeter -2.9 millimeters, can be to meet UGR value below same 19 When eliminate diffusion barrier again, save material cost.

Above-mentioned apex angle is defined such that the vertex in conical protrusions portion 6 and a diameter of its bottom surface are unified into one three Angular, the apex angle of the triangle is exactly the apex angle in conical protrusions portion 6.It here, may be due to bottom surface circle about above-mentioned spacing It is overlapped and makes less than twice bottom surface round diameter of spacing.

Fig. 4 is that the optics of existing thin microstructured optical films/plate exports the circular cone that profiles versus schemes (a) and the utility model The optics of raised thin microstructured optical films/plate exports the comparison of distribution schematic diagram (b), and the darker curve in figure is 0- in space The surface of intensity distribution of 180 degree section, lighter curve are the surface of intensity distribution of 90-270 degree section in space, and annulus is isocandela point Cloth annulus, luminous intensity unit are candela (cd), and the ray across annulus is angularly line, the unit degree of being (degree) of angle, 0 Degree is lamps and lanterns following location directly；Fig. 5 is that the optics of existing thin microstructured optical films/plate exports dazzle value UGR (a) and this reality The comparison of dazzle value (b), the numerical value expression indoor ceiling/metope/ground marked in figure by box are exported with novel optics Reflectivity is 0.7/0.5/0.2, when the length and width in room are 4Hx8H, the UGR value of LED light device, by data it is found that this is practical UGR value can be reduced to 17.3 by existing 17.9 by novel LED illuminating 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.

Preferably, in the utility model, the bottom surface radius in the conical protrusions portion is 0.3 millimeter -1.8 millimeters, described The corner angle in conical protrusions portion is 87 ° -93 °, and the spacing between the two neighboring conical protrusions portion bottom surface center of circle is 1.2 millis - 2.6 millimeters of rice.

It is further preferred that the bottom surface radius in the conical protrusions portion is 0.5 millimeter of -1.5 milli in the utility model Rice, the corner angle in the conical protrusions portion are 88 ° -92 °, the spacing between the two neighboring conical protrusions portion bottom surface center of circle It is 1.4 millimeters -2.4 millimeters.

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 all be 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.

Conic convex thin microstructured optical films/the plate and LED light device of the utility model are not only adapted to LED photograph Bright 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 (8)

1. a kind of conic convex thin microstructured optical films/plate, which is characterized in that the one side of the optical thin film/plate has The conical protrusions portion of periodic arrangement, the bottom surface radius in the conical protrusions portion are 0.1 millimeter -2 millimeters, the cone The corner angle of lug boss is 85 ° -95 °, and the spacing between bottom center, two neighboring conical protrusions portion is 0.9 millimeter -2.9 Millimeter.

2. a kind of conic convex thin microstructured optical films/plate according to claim 1, which is characterized in that the circular cone The bottom surface radius of shape lug boss is 0.3 millimeter -1.8 millimeters, and the corner angle in the conical protrusions portion is 87 ° -93 °, adjacent Spacing between two bottom center, conical protrusions portion is 1.2 millimeters -2.6 millimeters.

3. a kind of conic convex thin microstructured optical films/plate according to claim 2, which is characterized in that the circular cone The bottom surface radius of shape lug boss is 0.5 millimeter -1.5 millimeters, and the corner angle in the conical protrusions portion is 88 ° -92 °, adjacent Spacing between two bottom center, conical protrusions portion is 1.4 millimeters -2.4 millimeters.

4. a kind of conic convex thin microstructured optical films/plate according to claim 3, which is characterized in that the optics Film/plate is with a thickness of 0.1 millimeter -3.0 millimeters.

5. a kind of conic convex thin microstructured optical films/plate according to claim 4, which is characterized in that the optics Film/plate is with a thickness of 0.5 millimeter -1.8 millimeters.

6. a kind of LED light device, which is characterized in that have the described in any item conic convex micro-structure light of claim 1-5 Learn film/plate.

7. a kind of LED light device according to claim 6, 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.

8. a kind of LED light device according to claim 7, 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.