CN211045431U

CN211045431U - Active luminous film and active luminous sign board

Info

Publication number: CN211045431U
Application number: CN201922299074.0U
Authority: CN
Inventors: 张刚; 吴璐; 郭玮
Original assignee: Henan Chelu Intelligent Communication Information Technology Co ltd
Current assignee: Henan Chelu Intelligent Communication Information Technology Co ltd
Priority date: 2019-12-19
Filing date: 2019-12-19
Publication date: 2020-07-17
Anticipated expiration: 2029-12-19

Abstract

The utility model discloses an initiative luminous film, initiative luminous denoter, with the technical problem who solves current initiative luminous denoter structure complicacy, the preparation difficulty, unable rational utilization resource, the utility model discloses initiative luminous film, which comprises a base plate, L ED array, the scattering layer, the phosphor powder glue, contrary reflective layer, L ED array sets up on the base plate, the scattering layer is fixed in the top of L ED array, it has the phosphor powder glue to fill between base plate and the scattering layer, contrary reflective layer sets up in the side of scattering layer L ED array dorsad, initiative luminous sign, which comprises a bracket, the denoter panel, basement membrane and initiative luminous film, denoter panel and support fixed connection, the basement membrane is pasted in the front surface of denoter panel, initiative luminous film is pasted on the basement membrane, the utility model discloses directly paste initiative luminous film on having the denoter, reduce the volume, convenient manufacture, luminance is even.

Description

Active luminous film and active luminous sign board

Technical Field

The utility model relates to a luminous denoter technical field, concretely relates to initiative luminous film and initiative luminous denoter.

Background

The prior luminous sign is mostly of a box type structure, a patch type L ED light source is used inside the luminous sign, the light is projected to the back surface of a retro-reflective film in a back direct projection or side light guide mode to light luminous characters or patterns, and a patent document with the publication number of CN110306457A and the name of 'a light source splicing combined type active luminous traffic sign' discloses an active luminous sign and aims to solve the problem that a light source plate is difficult to maintain and replace.

However, the box type luminous sign has relatively large volume, complex assembly process and increased weight, and still has great difficulty in manufacturing; moreover, the existing luminous signs can not change the content of the local layout at low cost, so that when the road network number and the like change, the whole luminous signs can only be removed and replaced; in addition, when the traditional non-luminous traffic sign board which is installed and used is upgraded and reformed into a luminous traffic sign, the original sign board can only be dismantled, and most of the dismantled parts can not be reused, thereby causing serious waste of resources.

SUMMERY OF THE UTILITY MODEL

The utility model provides an initiative luminous film and initiative luminous denoter to solve the current initiative luminous denoter structure complicacy, preparation difficulty, unable convenient local change content, the technical problem of the existing resource of unable rational utilization.

In order to solve the technical problem, the utility model adopts the following technical scheme:

the design is an active light-emitting film, which comprises a substrate, an L ED array, a scattering layer, a fluorescent powder adhesive layer and a retroreflective layer, wherein the L ED array is arranged on the substrate, the scattering layer is fixed above the L ED array, the fluorescent powder adhesive layer is filled between the substrate and the scattering layer, and the retroreflective layer is arranged on the side surface of the scattering layer back to the L ED array.

Further, the L ED array is one of COB L ED, SMD L ED, CSP L ED, Mini L ED, Micro L ED, Q L ED and O L ED.

Further, the L ED arrays have a pitch of no more than 10mm and a thickness of no more than 3 mm.

Furthermore, the scattering layer can be made of acrylic glue with scattering effect, which is coated on the bottom surface of the retroreflective layer.

Further, the substrate is any one of glass fiber, aluminum base, copper base, ceramic base, polyester fiber, polyimide and indium tin oxide.

Further, the fluorescent powder rubber layer comprises silica gel mixed with yellow fluorescent powder.

Further, the scattering layer comprises PC doped with titanium white scattering particles.

The active luminous signboard comprises a support, a signboard panel, a bottom film and an active luminous film, wherein the signboard panel is fixedly connected with the support, the bottom film is adhered to the front surface of the signboard panel, and the active luminous film is adhered to the bottom film.

Compared with the prior art, the utility model discloses a main beneficial technological effect lies in:

the utility model discloses the membrane body is ultra-thin, can directly paste on ordinary traffic sign tablet, connects and supplies power and controlling means after, can directly upgrade the transformation to former non-luminous traffic sign tablet very conveniently.

The utility model discloses the initiative luminescent film is small, and the integrated level is high, uses the initiative luminous sign preparation process flow that this initiative luminescent film produced few, the encapsulation cost is lower, the encapsulation integrated level is high, the good reliability, and it is convenient to maintain, and the display effect is even fine and smooth.

Drawings

Fig. 1 is a schematic cross-sectional structure diagram of the active light-emitting film of the present invention.

Fig. 2 is a schematic diagram of an L ED array structure of the active light-emitting film of the present invention.

Fig. 3 is a schematic structural view of the active light-emitting sign of the present invention.

Fig. 4 is a rear view of the active light emitting sign of the present invention.

Fig. 5 is a circuit diagram of the active light-emitting sign controller of the present invention.

In the above figures, 1 is a substrate, 2 is an L ED light emitting chip, 3 is a phosphor paste, 4 is a scattering layer, 5 is a retroreflective layer, 100 is a signboard panel, 101 is a slide, 102 is a base film, and 103 is a rivet.

Detailed Description

The following embodiments are only intended to illustrate the present invention in detail, and do not limit the scope of the present invention in any way.

Example 1 an active light emitting film, see fig. 1, the film is a layered structure, which comprises, in order from left to right, a substrate 1, a L ED light emitting chip 2, a phosphor paste 3, a scattering layer 4, and a retroreflective layer 5, the substrate 1 is a flexible PCB and may be made of glass fiber, aluminum base, copper base, ceramic base, polyester fiber, polyimide, or indium tin oxide, in this example, polyimide is used, a L ED light emitting chip 2 is welded on the upper surface of the substrate 1, see fig. 2, L ED light emitting chip 2 is welded at an equal interval of 2mm × mm, L ED light emitting chip 2 is COB L ED, SMD L ED, CSP L4 ED, Mini L ED, Micro L ED, Q L ED, or O L ED, in this example, when white light emission is required, white light L may be directly used, or RGB L ED chips may be used, a phosphor paste or a reflective layer may be coated on a L chip, a layer of light emitting film is coated on the scattering layer 2, the scattering layer may be made of a scattering white light emitting layer or scattering particles, and may be made of PC particles.

The gap between the substrate 1 and the scattering layer 4 is filled with cured phosphor glue 3, and the phosphor glue 3 is silica gel mixed with yellow phosphor powder, and the thickness of the silica gel is 0.3 mm. The upper surface of the scattering layer 4 is pasted with a retro-reflection layer 5, and the retro-reflection layer 5 is also called a reflective membrane and is widely applied to the existing traffic sign. A coating or a reflective film capable of reflecting light is sprayed or adhered on the substrate 1 to enhance the luminous intensity. In addition, the scattering layer 4 has optical microstructures or is printed and sprayed with scattering particles to reduce the brightness of the front surface of the light source and further improve the uniformity of the scattering brightness.

The preparation method of the active luminescent film comprises the following steps:

the method comprises the following steps of 1, carrying out reflow soldering on N L ED light-emitting chips 2 (with the thickness of 0.15 mm) on the upper surface of a flexible PCB substrate 1 (with the thickness of 0.25 mm) by using an automatic die bonder, and connecting electrodes of N L ED light-emitting chips 102 together through the flexible PCB substrate 1 to form an electric path, wherein the N L ED light-emitting chips 102 are arranged at equal intervals according to a 2mm × 2mm rectangle to form a character or pattern shape;

step 2, cutting the flexible PCB substrate 1 welded with the L ED light-emitting chip 2 into characters or patterns with corresponding sizes by using an engraving machine;

step 3, encapsulating and curing a layer of fluorescent powder glue 3 on the upper surface of the flexible PCB substrate 1 in an automatic glue dispenser encapsulation mode, wherein the upper surface of the fluorescent powder glue 3 is horizontal, all L ED light-emitting chips 2 are immersed in the fluorescent powder glue 3, and the thickness of the fluorescent powder glue is 0.3 mm;

and 4, step 4: cutting the scattering layer 4 with the thickness of 0.3mm into characters or patterns by a carving machine, and sticking the scattering layer on the upper surface of the fluorescent powder glue 3 by silica gel;

and 5: the light-transmitting retroreflective layer 5 (thickness: 0.4 mm) was cut into the same shape as the substrate 1 with a plotter and adhered to the scattering layer 4 with a pressure-sensitive adhesive.

The active light-emitting film is small in size, light and thin, convenient to use and uniform and fine in display effect, before the active light-emitting film is manufactured, the flexible PCB substrate 1 needs to be cleaned and baked firstly, the flexible PCB substrate 1 is cleaned by a cleaning machine, organic matters remained on the surface of the flexible PCB substrate 1 are removed, the reflow soldering bonding force of the L ED light-emitting chip 2 is improved, and then the flexible PCB substrate 1 is baked by an oven to remove water vapor on the surface of the flexible PCB substrate 1.

Example 2: an active luminous signboard, as shown in fig. 3 and 4, comprises a rectangular support, a slideway 101 is arranged around the support, and a signboard panel 100 slides into the support from the lower part of the slideway 101 and is fixed by a rivet 103 on the back of the support. The sign panel 100 has a base film 102 attached to the front surface thereof, and an active light-emitting film attached to the base film to form a light-emitting portion. The power supply and control device is fixed to the back of the signboard panel 100 by screws. The panel 100 of the signboard is provided with a hidden wire passing hole through which the active light emitting film is connected with the power supply and control device.

The active luminous mark comprises the following manufacturing steps:

s1: manufacturing a bracket and a signboard panel by using an aluminum material, wherein the bracket is provided with a slideway, and the aluminum panel is arranged on the bracket through the slideway and fixed by using a rivet;

s2: attaching the base film 102 to the other plane of the aluminum signboard panel 100 through a pressure sensitive adhesive;

s3: the active light-emitting film in example 1 was attached to the base film 102 with a pressure-sensitive adhesive;

s4: the bottom film 102 and the signboard panel 100 are provided with hidden wire passing holes, the active light emitting film passes through the hidden wire passing holes through a conducting wire, and the back of the signboard panel 100 is connected with a power supply and control device to form an electric path.

The power supply device adopts a 12V storage battery, the control circuit comprises a voltage reduction circuit (MP 1584), a current control circuit (P L), a single chip microcomputer (STC 8A8K64S4A 12), and referring to FIG. 5, the voltage reduction circuit reduces the voltage of the storage battery to be near the starting voltage of an L ED chip, the current control circuit sets the output current of a pin 1 to the sum of rated working currents of all parallel-connected L ED chips by adjusting the resistance value of a feedback resistor, the output end of the single chip microcomputer is connected with an MOSFET to control the anode of an L ED matrix, the output end of the single chip microcomputer outputs 0-100% of a settable PWM square wave with the frequency greater than 1kHz, so as to achieve the rated working current in L transient state, the average current can be conveniently set and reduced, the brightness of a plurality of dense light-emitting diodes (LEDs) 7 is guaranteed, the consistency is consistent, the cathode of a L ED matrix is grounded, the control circuit can set by a PWM square wave with the frequency greater than 1kHz, so as to achieve the rated working current in an active working current when the light-emitting diode array is in an active light-emitting time, the light-emitting diode array can be conveniently used for monitoring the light-emitting time, the light-emitting diode array, the light-emitting diode light-emitting.

The present invention has been described in detail with reference to the accompanying drawings and embodiments, but those skilled in the art will understand that various specific parameters in the above embodiments can be changed without departing from the spirit of the present invention to form a plurality of specific embodiments, which are the common variation ranges of the present invention and will not be described in detail herein.

Claims

1. The active light-emitting film is characterized by comprising a substrate, L ED arrays, a scattering layer, a phosphor powder adhesive layer and a retro-reflecting layer, wherein the L ED arrays are arranged on the substrate, the scattering layer is fixed above the L ED arrays, the phosphor powder adhesive layer is arranged between the substrate and the scattering layer, and the retro-reflecting layer is arranged on the side surface of the L ED arrays, which is back to the scattering layer.

2. The active light emitting film of claim 1, wherein the L ED array is any one of blue light L ED chip, RGB L ED chip, COB L ED, SMD L ED, CSP L ED, Mini L ED, Micro L ED, Q L ED, and O L ED.

3. The active light emitting film of claim 1, wherein the L ED arrays have a pitch of 10mm or less and a thickness of 3mm or less.

4. The active light emitting film of claim 1, wherein the scattering layer comprises acrylic glue applied to the retroreflective layer.

5. The active light emitting film of claim 1, wherein the substrate is any one of glass fiber, aluminum-based, copper-based, ceramic-based, polyester fiber, polyimide, and indium tin oxide.

6. The utility model provides an initiative luminous denoter, includes support, denoter panel, its characterized in that: still include basement membrane and claim 1 the luminous film of initiative, the denoter panel with support fixed connection, the basement membrane paste in the front surface of denoter panel, the luminous film of initiative paste in on the basement membrane.