Fluorescence-enhanced lamp box advertising board

Abstract

The invention discloses a fluorescence-enhanced light box advertising board. The light box advertising board comprises front glass, advertising cloth, a back plate and a peripheral frame, the advertising cloth is arranged between the front glass and the back plate; a visible light wave band ultraviolet LED backlight source is arranged on the back plate, and a UVA wave band ultraviolet LED light source is arranged on the back plate and / or the peripheral frame; wherein the advertising cloth is fluorescence enhanced advertising cloth obtained by adopting fluorescent ink doped with an organic photoluminescence material. According to the invention, the fluorescence enhanced advertisement doped with the organic photoluminescent material is arranged in the lamp box, and under the irradiation of the UVA waveband ultraviolet LED light source, the doped organic photoluminescent material is excited to emit light, so that the color brilliance and color saturation of an advertisement picture are enhanced, and the display effect of the lamp box advertisement is improved.

Description

Technical Field

[0001] The invention belongs to the field of luminescent materials, and in particular relates to a fluorescence-enhanced light box advertising board. Background Art

[0002] At present, there are many light box billboards in bus stations, subway stations, railway stations, airports and shopping malls, but the existing light box billboards have dull colors, especially some outdoor light box billboards have low contrast and low color saturation under natural light during the day, which affects the effect of light box advertising. Summary of the invention

[0003] The invention provides a fluorescence-enhanced light box advertising board, which makes the picture color more vivid and enhances the display effect of the light box advertisement by adding fluorescent material to the advertisement pattern and irradiating the advertisement pattern with UVA band ultraviolet LED light.

[0004] In order to achieve the above technical objectives, the present invention adopts the following technical solutions:

[0005] A fluorescent enhanced light box billboard, comprising a front glass, an advertising cloth, a back plate and a surrounding frame; the advertising cloth is arranged between the front glass and the back plate; a visible light band ultraviolet LED backlight source is arranged on the back plate and / or the surrounding frame, and a UVA band ultraviolet LED light source is arranged on the back plate and / or the surrounding frame;

[0006] The advertising cloth is a fluorescence-enhanced advertising cloth obtained by using fluorescent ink mixed with organic photoluminescent materials.

[0007] Preferably, the organic photoluminescent material incorporated into the advertising cloth is selected from organic fluorescent materials, organic phosphorescent materials, metal complex fluorescent materials, metal complex phosphorescent materials, and rare earth complex luminescent materials.

[0008] Preferably, the organic fluorescent material and the organic phosphorescent material are conjugated luminescent molecules composed of carbon, hydrogen, oxygen, nitrogen, sulfur, phosphorus, boron, fluorine, chlorine and bromine.

[0009] Preferably, the metal complex fluorescent material consists of an organic ligand and metal ions.

[0010] Preferably, the metal complex fluorescent material is an aluminum (III) complex, a magnesium (II) complex, or a zinc (II) complex.

[0011] Preferably, the metal complex phosphorescent material consists of an organic ligand and metal ions.

[0012] Preferably, the metal complex phosphorescent material is an iridium (III) complex, a platinum (II) complex, a copper (I) complex, a silver (I) complex, or a gold (I) complex.

[0013] Preferably, the rare earth complex luminescent material is a rare earth europium (III) complex, terbium (III) complex, europium (II) complex, or cerium (III) complex.

[0014] Preferably, the organic photoluminescent material is selected from red, green, blue, yellow and orange luminescent materials.

[0015] Preferably, the red organic photoluminescent material is selected from solvent red 168, solvent red 169, perylene red 620, rhodamine, tetrasulfonyl aluminum phthalocyanine, Eu(TTA) 3 phen; the green organic photoluminescent material is selected from fluorescein, solvent green 5, solvent green 28, solvent green 3, solvent green 7, tris (8-hydroxyquinoline) aluminum, Cu (I) complex CuPCP, Tb (AcAc) 2 (AA)phen; the blue organic photoluminescent material is selected from fluorescent brightener KSN, fluorescent brightener CBS, fluorescent brightener OB, cerium complex Ce(FPhTp) 3 Luminescent material; the yellow organic photoluminescent material is selected from tetraethylrhodamine, rhodamine isothiocyanate, and phycoerythrin;

[0016] Preferably, the fluorescent ink may be formed by compounding a color ink with an organic photoluminescent material, or may be formed by compounding a white / colorless ink with an organic photoluminescent material.

[0017] Preferably, the organic photoluminescent material is added into the fluorescent ink in an amount of 0.01% to 10%.

[0018] Preferably, the wavelength range of the UVA band ultraviolet LED light source needs to include the excitation wavelength of the organic photoluminescent material incorporated into the advertising cloth. More preferably, the wavelength range of the UVA band ultraviolet LED light source is 320-400 nm.

[0019] Preferably, the light box billboard is also provided with a light brightness sensor and is connected to an LED light source power controller, and the LED light source power controller is connected to and controls a UVA band ultraviolet LED light source.

[0020] The organic light-emitting material is easy to disperse in fluorescent ink, which is convenient for printing advertising patterns.

[0021] The organic photoluminescent material is colorless or colored in appearance, and exhibits a bright fluorescent color under UVA ultraviolet light excitation. When the organic light-emitting material can only be excited by ultraviolet light but does not absorb visible light, the material appears white (colorless and transparent after dissolution). For example, the fluorescent whitening agent KSN appears colorless (or slightly yellowish) in sunlight after being dissolved, and emits bright blue light under ultraviolet light excitation; the rare earth complex Eu(TTA)phen appears colorless in sunlight after being dissolved, and emits bright red light under ultraviolet light excitation. When the organic light-emitting material can be excited by ultraviolet light and absorb visible light, the material appears colorful. For example, Solvent Green 5 appears green in sunlight, and emits green fluorescence under ultraviolet light excitation; Fluorescent Red GK appears red in sunlight, and emits orange-red fluorescence under ultraviolet light excitation.

[0022] The organic photoluminescent material can be used alone or in combination. When used alone, it can present a single color, such as red, green, and blue, under ultraviolet light excitation; when used in combination, it can present a complex color, such as pink, purple, cyan, orange-yellow, or even white light.

[0023] The fluorescent ink can be formed by compounding a color ink with an organic photoluminescent material, or by compounding a white / colorless ink with an organic photoluminescent material. For example, a red luminescent material can be added to a red ink, a green luminescent material can be added to a green ink, and a blue luminescent material can be added to a blue ink. A fluorescent material with a white appearance can also be added to a white ink or a colorless ink. The resulting ink is colorless under sunlight, but can emit light of multiple colors such as red, green, and blue under ultraviolet light excitation.

[0024] The organic photoluminescent material is added to the fluorescent ink in a ratio of 0.01% to 10%, preferably 0.02% to 5%, and particularly preferably 0.05% to 2%. The addition ratio can be adjusted according to the color requirements of the advertising screen pattern, and the concentration of the doped materials can also be adjusted according to the actual use environment. If the advertising light box is placed outdoors, the concentration of the doped material can be appropriately increased.

[0025] The fluorescent ink can be used to print the edges of objects that need to be highlighted in advertisement patterns, and display a luminous effect in a light box to achieve the purpose of highlighting and enhancing the effect.

[0026] The wavelength range of the UVA band ultraviolet LED light source is 320 to 400 nm, preferably 330 to 380 nm, and can be adjusted and optimized according to the excitation wavelength of the incorporated luminescent material. The wavelength range of the selected LED light source needs to include the excitation wavelength of the incorporated luminescent material. For example, if the excitation wavelength of the incorporated luminescent material is 355 nm, the wavelength range of the LED light source can be selected to be 345 to 365 nm. Furthermore, if two or more colors of luminescent materials are incorporated, the wavelength range of the selected LED light source needs to cover the excitation wavelengths of all incorporated luminescent materials.

[0027] Furthermore, a brightness sensor can be set outside the advertising light box, and matched with an LED light source power controller to control the intensity of the LED light source in the UVA band. Different external light brightnesses match different light source powers, such as high, medium, and low brightnesses corresponding to high, medium, and low light source powers. Light sources of different powers are turned on under different external light brightnesses, so that the external light brightness and the color saturation of the advertising picture are more matched, and the advertising picture is better presented.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] 1. The present invention dopes the materials used in the light box advertising pattern with high-efficiency fluorescent materials to enhance the luminescence of the light box advertising pattern, especially under natural light during the day, when the internal backlight is turned on, the color saturation of the advertising picture is improved and the display effect is enhanced.

[0030] 2. The high-efficiency fluorescent material of the present invention can be used for the edges of luminous bodies in advertising patterns and objects that need to be highlighted to display luminous effects and highlight the display.

[0031] 3. The present invention can selectively set a light brightness sensor and an LED light source power controller to turn on light sources of different powers under different external light brightnesses, so that the external light brightness is more matched with the color saturation of the advertising picture, and the advertising picture is better presented.

[0032] The invention arranges the fluorescence enhanced advertisement doped with organic photoluminescent material in a light box, and under the irradiation of UVA band ultraviolet LED light source, the doped organic photoluminescent material is stimulated to emit light, thereby enhancing the color vividness and color saturation of the advertisement picture and improving the display effect of the light box advertisement. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of a light box billboard: A, front glass, B, back panel, C, back visible light LED backlight, D, back UVA band ultraviolet LED light source, E, side frame, F, side UVA band LED light source, G, light brightness sensor, H, LED light source power controller;

[0034] Figure 2This is a schematic diagram of an advertisement screen without adding fluorescent enhancement materials to the advertisement cloth;

[0035] Figure 3 This is a schematic diagram of an advertisement screen in which the advertisement cloth in Example 1 is added with enhanced fluorescent material.

[0036] Figure 4 This is a schematic diagram of an advertising screen in which an enhanced fluorescent material is added to the advertising cloth in Example 2.

[0037] Figure 5 This is a schematic diagram of an advertisement screen in which an enhanced fluorescent material is added to the advertisement cloth in Example 3. DETAILED DESCRIPTION

[0038] The present invention is further described below in conjunction with the accompanying drawings and embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0039] The present invention provides a fluorescent enhanced light box advertising board. Figure 1 As shown, the main frame of the light box billboard includes a front glass (A), a back plate (B) and a side frame (E). Between the front glass (A) and the back plate (B) of the billboard, the printed advertising cloth is placed. On the back plate (B), a visible light LED backlight source (C) and a UVA band ultraviolet LED light source (D) are arranged alternately in alternate rows or one by one; on the side frame (E), a UVA band ultraviolet LED light source (F) can also be arranged; the light brightness sensor (G) is placed outside the light box billboard and connected to the LED light source power controller (H), and the LED light source power controller (H) is connected to and controls the back UVA band ultraviolet LED light source (D) and the side UVA band ultraviolet LED light source (F).

[0040] When printing the advertising pattern, the advertising cloth uses fluorescent ink added with organic photoluminescent material to obtain the fluorescence enhanced advertising cloth. The advertisement is arranged between the front glass (A) and the back plate (B) of the billboard.

[0041] Example 1

[0042] The red organic light-emitting material Eu(TTA)phen and the green organic light-emitting material Tb(AcAc) 2 (AA)phen and blue organic light-emitting material fluorescent brightener KSN are mixed and compounded in a proportion that can be adjusted according to the picture or requirements, and are added into the colorless fluorescent ink at a proportion of 5.0% to form white light-emitting A material.

[0043] The blue organic light-emitting material fluorescent brightener KSN, the red organic light-emitting material solvent Red 169, and the green organic light-emitting material solvent Green 7 are mixed and compounded in a proportion that can be adjusted according to the picture or requirements. They are added into the colorless fluorescent ink at a proportion of 0.15% to form a yellow-white light-emitting B material.

[0044] The red organic light-emitting material Solvent Red 169 is added to the red ink to form a red light-emitting C material.

[0045] The billboard image without fluorescence enhancement is as follows Figure 2 As shown, the roses and diamond rings in the pattern are printed using ordinary ink.

[0046] Use fluorescent enhanced advertising cloth, the same pattern, use material A to print a shining pattern around the diamond ring, and print material B around the shining pattern to create a halo effect; the rose pattern is printed using red fluorescent enhanced material C. When the advertising light box is powered on, the ring will show a sparkling effect, and the rose pattern will also be more gorgeous. Figure 3 shown.

[0047] Visible Figure 2 and Figure 3 In contrast, when fluorescent enhanced billboards are not used, outdoor light box advertising images will have significant color difference and low color saturation under natural light during the day, affecting the effect of light box advertising, such as Figure 2 When using the fluorescent enhanced billboard of the present invention, a highly efficient fluorescent material is added to the ink printed on the billboard. Figure 1 After the back panel UVA band ultraviolet LED light source (D) is turned on, the color saturation of the picture is significantly increased, and the display effect of the light box advertisement is significantly enhanced, such as Figure 3 shown.

[0048] Example 2

[0049] The cerium complex Ce(FPhTp) 3 The luminescent material is added to the white ink at a ratio of 5.0% to form a D material with enhanced blue-white fluorescence;

[0050] exist Figure 4 In the picture shown, the clothing LOGO pattern is made of D material with blue and white fluorescence enhancement. When the advertising light box is powered on, the clothing LOGO will show bright blue and white light. Figure 4 shown.

[0051] Example 3

[0052] The red fluorescent tetrasulfonated aluminum phthalocyanine was added into the red ink at a ratio of 0.2% to form the red fluorescent enhanced E material;

[0053] The green fluorescent solvent green 5 is added into the green ink at a ratio of 0.1% to form the green fluorescent enhanced F material;

[0054] The red fluorescence enhanced E material and the green fluorescence enhanced F material are mixed and compounded in a proportion which can be adjusted according to the picture or requirements, and added into the yellow ink at a proportion of 0.15% to form the orange fluorescence enhanced G material.

[0055] like Figure 5 The picture shown is a fluorescent enhanced advertising cloth. The red fluorescent enhanced ink containing material E is used to make the bayberry pattern; the green fluorescent enhanced ink containing material F is used to make the grape pattern; and the yellow fluorescent enhanced ink containing material G is used to make the Hami fruit pattern. After the advertising light box is powered on, the bayberry, grape and Hami melon fruit patterns appear bright red, green and orange.

[0056] Figure 3 , Figure 4 , Figure 5 By using the fluorescent enhanced ink of the present invention, the billboard shows bright colors after turning on the UVA band LED ultraviolet lamp, and has an outstanding display effect.

[0057] Furthermore, a brightness sensor (G) can be set outside the advertising light box, and matched with an LED light source power controller (H) to control the intensity of the UVA band ultraviolet LED light source. Different external light brightnesses match different light source powers, such as high, medium, and low brightnesses corresponding to high, medium, and low light source powers. Light sources of different powers are turned on under different external light brightnesses, so that the external light brightness and the color saturation of the advertising picture are more matched, and the advertising picture is better presented.

[0058] The invention arranges the fluorescence enhanced advertisement doped with organic photoluminescent material in a light box, and under the irradiation of UVA band ultraviolet LED light source, the doped organic photoluminescent material is stimulated to emit light, thereby enhancing the color vividness and color saturation of the advertisement picture and improving the display effect of the light box advertisement.

[0059] The above-described embodiments are only preferred implementation modes of the present application. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the creative concept of the present application, which all belong to the protection scope of the present application.

Claims

1. A fluorescent enhanced light box billboard, characterized in that: The light box billboard comprises a front glass, an advertising cloth, a back plate and a surrounding frame; the advertising cloth is arranged between the front glass and the back plate; a visible light band ultraviolet LED backlight source is arranged on the back plate, and a UVA band ultraviolet LED light source is arranged on the back plate and / or the surrounding frame; The advertising cloth is a fluorescence-enhanced advertising cloth obtained by using fluorescent ink mixed with organic photoluminescent materials.

2. The fluorescent enhanced light box billboard according to claim 1, characterized in that: The organic photoluminescent material added to the advertising cloth is selected from organic fluorescent materials, organic phosphorescent materials, metal complex fluorescent materials, metal complex phosphorescent materials, and rare earth complex luminescent materials.

3. The fluorescent enhanced light box billboard according to claim 2, characterized in that: The organic fluorescent material and organic phosphorescent material are conjugated luminescent molecules composed of carbon, hydrogen, oxygen, nitrogen, sulfur, phosphorus, boron, fluorine, chlorine and bromine; the metal complex fluorescent material and metal complex phosphorescent material are composed of organic ligands and metal ions.

4. The fluorescent enhanced light box billboard according to claim 1, characterized in that: The organic photoluminescent material is selected from red, green, blue, yellow and orange luminescent materials.

5. The fluorescent enhanced light box billboard according to claim 4, characterized in that: The red organic photoluminescent material is selected from solvent red 168, solvent red 169, perylene red 620, rhodamine, tetrasulfonaluminum phthalocyanine, and Eu(TTA)3phen; the green organic photoluminescent material is selected from fluorescein, solvent green 5, solvent green 28, solvent green 3, solvent green 7, tris(8-hydroxyquinoline)aluminum, Cu(I) complex CuPCP, and Tb(AcAc)2(AA)phen; the blue organic photoluminescent material is selected from fluorescent brightener KSN, fluorescent brightener CBS, fluorescent brightener OB, and cerium(III) complex Ce(FPhTp)3 luminescent material; the yellow organic photoluminescent material is selected from tetraethylrhodamine, rhodamine isothiocyanate, and phycoerythrin.

6. The fluorescent enhanced light box billboard according to claim 1, characterized in that: The fluorescent ink may be formed by compounding a color ink and an organic photoluminescent material, or may be formed by compounding a white / colorless ink and an organic photoluminescent material.

7. The fluorescent enhanced light box billboard according to claim 1, characterized in that: The mixing ratio of the organic photoluminescent material in the fluorescent ink is 0.01% to 10%.

8. The fluorescent enhanced light box billboard according to claim 1, characterized in that: The wavelength range of the UVA band ultraviolet LED light source includes the excitation wavelength of the organic photoluminescent material incorporated into the advertising cloth.

9. The fluorescent enhanced light box billboard according to claim 1, characterized in that: The wavelength range of the UVA band ultraviolet LED light source is 320-400nm.

10. The fluorescent enhanced light box billboard according to claim 1, characterized in that: The light box billboard is also provided with a light brightness sensor and is connected to an LED light source power controller, and the LED light source power controller is connected to and controls a UVA band ultraviolet LED light source.

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