TW202422514A - Advertising device having high contrast ratio - Google Patents

Abstract

An advertising device having a high contrast ratio includes a light source, a transparent back panel, an advertising picture, and a controller. The light source includes a plurality of light emitting units. The transparent back panel is disposed over the light emitting units. The advertisement picture is disposed on the transparent back panel, and has a pattern area and a background area. The controller is electrically connected to the light source, and is configured to light up a portion of the plurality of light emitting units that corresponds in position to the pattern area of the advertising picture. Therefore, a strong light-dark contrast between any pattern or text and a background can be allowed for the advertisement picture, so as to achieve a rich and multi-level displaying effect.

Description

High contrast advertising devices

The present invention relates to an advertising device, and in particular to an advertising device with high contrast.

Light boxes can be used for advertising, and compared with ordinary billboards, light boxes have better advertising effects. Even in a dim environment with insufficient light, the advertising content of light boxes can be clearly seen. However, existing light boxes simply use light sources to illuminate printed advertising images, and the light sources used are mostly in the form of light tubes or light strips, which still have shortcomings to be improved.

For example, the light source in the existing light box does not illuminate the advertisement picture uniformly, causing some parts of the advertisement picture to be brighter while other parts are dim. In addition, the existing light box controls the light source only by using a switch to turn on the light source. Under such control, light will penetrate all parts of the advertisement picture, resulting in insufficient contrast. As a result, the pattern or text on the advertisement picture cannot be highlighted, and the advertisement screen may have color cast or unclear color gradation.

The purpose of the present invention is to provide an advertising device with high contrast, which can present rich multi-layered picture effects to solve the problems existing in the above-mentioned prior art.

In order to solve the above technical problems, one of the technical solutions adopted by the present invention is to provide an advertising device with high contrast, including a light source, a transparent back plate, an advertising picture and a controller. The light source includes a plurality of light-emitting units arranged at intervals, the transparent back plate is arranged on the plurality of light-emitting units, the advertising picture is arranged on the transparent back plate, and the advertising picture has a pattern area and a background area. The controller is electrically connected to the light source, and the controller is configured to light up the plurality of light-emitting units corresponding to the pattern area of the advertising picture.

In one embodiment of the present invention, the plurality of light-emitting units lit by the controller have the same brightness.

In an embodiment of the present invention, the advertisement picture is a printed advertisement picture and includes an upper picture and a lower picture, the upper picture has the pattern area and the background area, the pattern area is a non-black area and the background area is a first black area. In addition, the lower picture has a white area corresponding to the pattern area and a second black area corresponding to the background area.

In an embodiment of the present invention, the advertising device with high contrast further includes a quantum dot film, which is disposed between the transparent back plate and the plurality of light-emitting units, and the thickness of the transparent back plate is 0.5 cm to 3 cm.

In one embodiment of the present invention, the plurality of light emitting units are configured to emit blue light, and the quantum dot film contains red quantum dots and green quantum dots.

In an embodiment of the present invention, each of the light-emitting units includes a light-emitting structure and a quantum dot layer, and the quantum dot layer covers a light-emitting surface of the light-emitting structure.

In one embodiment of the present invention, the light-emitting structure is a blue light-emitting diode, and the quantum dot layer contains red quantum dots and green quantum dots.

In an embodiment of the present invention, the advertising device with high contrast further includes a transparent panel, which is disposed on the advertising image, and the transparent panel is configured to isolate the advertising image from the outside.

In an embodiment of the present invention, a plurality of the light emitting units are arranged in an array at a predetermined interval, the predetermined interval is 2 mm to 6 mm, and the light emitting angle of each of the light emitting units is between 150° and 180°.

In an embodiment of the present invention, each of the light-emitting units includes a light-emitting structure, a light-guiding layer and a light-reflecting layer. The light-guiding layer is arranged on a light-emitting surface of the light-emitting structure and has a top surface away from the light-emitting surface and a ring side surface connected to the top surface. The light-reflecting layer is arranged on the top surface of the light-guiding layer.

One of the beneficial effects of the present invention is that in the advertising device with high contrast of the present invention, the controller is electrically connected to the light source, and the controller is configured to light up a plurality of light-emitting units corresponding to the pattern area of the advertising picture, thereby improving the display contrast, making the light and dark contrast between the pattern or text on the advertising picture and the background more obvious, and reducing energy consumption. In addition, when the advertising device with high contrast of the present invention is used, only the target light-emitting area will be lit, and the brightness of the target light-emitting area is consistent, so the displayed advertising picture will not have color deviation or unclear color gradation.

To further understand the features and technical contents of the present invention, please refer to the following detailed description and drawings of the present invention. However, the drawings provided are only used for reference and description and are not used to limit the present invention.

The following is an explanation of the implementation of the "advertising device with high contrast" disclosed in the present invention through specific concrete embodiments. Those skilled in the art can understand the advantages and effects of the present invention from the contents disclosed in this specification. The present invention can be implemented or applied through other different specific embodiments, and the details in this specification can also be modified and changed in various ways based on different viewpoints and applications without departing from the concept of the present invention. In addition, the drawings of the present invention are only for simple schematic illustrations and are not depicted in actual size. Please note in advance. The following implementation will further explain the relevant technical contents of the present invention in detail, but the disclosed contents are not intended to limit the scope of protection of the present invention. In addition, the term "or" used herein may include any one or more combinations of the associated listed items as appropriate.

Unless otherwise defined, the terms used herein have the same meanings as those generally understood by those skilled in the art. Materials involved in each embodiment are commercially available or prepared according to prior art unless otherwise specified. Operations or instruments involved in each embodiment are conventional operations or instruments in the art unless otherwise specified.

[First embodiment]

Please refer to Figures 1 to 3, which show the structure of the advertising device Z with high contrast according to the first embodiment of the present invention. As shown in Figures 1 to 3, the advertising device Z with high contrast of the present invention mainly includes a light source 1, a transparent back plate 2, an advertising picture 3, a controller 4 and a device housing 5, and the light source 1, the transparent back plate 2, the advertising picture 3 and the controller 4 can be integrated in the device housing 5, and are not easily affected by external environmental factors such as water and dust.

In this embodiment, the light source 1 includes a plurality of light-emitting units 11 (light-emitting areas) arranged at intervals, a transparent back plate 2 is arranged on the plurality of light-emitting units 11, an advertising picture 3 is arranged on the transparent back plate 2, wherein the advertising picture 3 has a pattern area 311 and a background area 312, and a controller 4 is electrically connected to the light source 1. The device housing 5 includes an outer frame 51 and a back plate 52, and the outer frame 51 and the back plate 52 are combined into one body to enclose a containing space, but the present invention is not limited thereto. In order to improve reliability, the advertising device Z with high contrast of the present invention may further include a transparent panel 6, which is arranged on the advertising picture 3 to isolate the advertising picture 3 from the outside.

Please refer to FIG. 4 and FIG. 5 . When the advertising device Z with high contrast of the present invention is used, the controller 4 can be configured to light up the multiple light-emitting units 11 corresponding to the pattern area 311 of the advertising image 3, that is, only light up the target light-emitting area. Therefore, the display contrast can be improved, so that the light and dark contrast between the pattern or text on the advertising image 3 and the background is more obvious, so as to present a rich multi-layered picture effect to attract the attention of the viewer. In addition, when only the multiple light-emitting units 11 corresponding to the pattern area 311 of the advertising image 3 are lit, these light-emitting units 11 are further controlled to have the same brightness, even if the brightness of the target light-emitting area is consistent, which can effectively avoid the phenomenon of color deviation or unclear color gradation of the displayed advertising picture. It is worth noting that although the contrast can be improved by lighting all the light-emitting units 11 of the light source 1 and controlling them to produce different brightness, this method will obviously increase the energy consumption of the advertising device.

Specifically, as the light source 1 of the advertising device Z with high contrast of the present invention, a light panel surface light source can be used. The light source 1 may include a circuit board 12 for setting and driving a plurality of light-emitting units 11; each light-emitting unit 11 may include a blue light-emitting diode, but is not limited thereto. The plurality of light-emitting units 11 may be arranged in an array at a predetermined spacing on a surface of the circuit board 12, and the predetermined spacing is 2 mm to 6 mm, but the arrangement of the plurality of light-emitting units 11 may vary according to actual needs, and the present invention has no particular limitation on this. Preferably, among the plurality of light-emitting units 11 arranged in an array, the light-emitting angle of each light-emitting unit 11 may be between 150° and 180°, so that the advertising picture has sufficient clarity. In actual application, one or more driving units such as a driving circuit chip (not shown) may be provided on the other surface of the circuit board 12, which can drive the target light-emitting unit 11 to light up (the rest of the light-emitting units 11 are not lit) according to the control instruction of the controller 4. In some embodiments, the driving unit may also be provided around the outer periphery of the plurality of light-emitting units 11 arranged in an array.

The transparent back plate 2 can be configured to provide sufficient protection for the multiple light-emitting units 11 while allowing light from the multiple light-emitting units 11 to penetrate, and provide good support for the advertising picture 3; the transparent back plate 2 can be a transparent acrylic plate, but is not limited to this. Preferably, the thickness of the transparent back plate 2 can be 0.5 cm to 3 cm. The advertising picture 3 can be a printed advertising picture, in which the pattern area 311 is a non-black area and the background area 312 is a black area (first black area). The transparent panel 6 can be configured to completely cover the advertising picture 3 without affecting the picture effect of the advertising picture 3; the advertising picture 3 can also be a transparent acrylic plate, but is not limited to this.

Please refer to FIG. 2 and FIG. 3 again, and in conjunction with FIG. 6, in order to improve the color vividness of the advertising screen, quantum dot materials can be applied to the advertising device Z with high contrast of the present invention. Further, as shown in FIG. 3, the advertising device Z with high contrast of the present invention may include a quantum dot film 7, and the quantum dot film 7 is disposed between the transparent back plate 2 and a plurality of light-emitting units 11, wherein the plurality of light-emitting units 11 are all within the coverage range of the quantum dot film 7. In actual application, the plurality of light-emitting units 11 may be configured to emit blue light, and the quantum dot film 7 may contain red quantum dots and green quantum dots, but the present invention is not limited thereto. As an alternative to the quantum dot film 7, as shown in FIG2 and FIG6, each light-emitting unit 11 may include a light-emitting structure 111 and a quantum dot layer 112, and the quantum dot layer 112 covers a light-emitting surface 111s of the light-emitting structure 111. In practical applications, the light-emitting structure 111 may be a blue light-emitting diode, and the quantum dot layer 112 may contain red quantum dots and green quantum dots. It is worth mentioning that when the thickness of the transparent backplane 2 is within the above-mentioned thickness range, a better white light uniformity can be achieved.

The controller 4 can control the lighting or extinguishing of the light-emitting units 11 in any area, and adjust the brightness of the light-emitting units 11 that are lit. Furthermore, the user can obtain the color information 3c such as the grayscale value corresponding to the content of the advertising image 3 through image analysis, and the controller 4 can determine which light-emitting units 11 need to be lit according to this color information 3c, and control the light source 1 accordingly, so that the multiple light-emitting units 11 corresponding to the pattern area 311 of the advertising image 3 enter the light-emitting state. In actual application, the controller 4 can be set in the device housing 5 and connected to the circuit board 12 of the light source 1 by signal. The controller 4 can store the color information 3c in the internal memory or read the color information through the external memory. However, the above is only a feasible implementation method and is not used to limit the present invention.

[Second embodiment]

Please refer to FIG. 1 to FIG. 3 and FIG. 7 , the second embodiment of the present invention provides an advertising device Z with high contrast, which includes a light source 1, a transparent back plate 2, an advertising picture 3 and a controller 4. The light source 1 includes a plurality of light-emitting units 11 arranged at intervals, the transparent back plate 2 is arranged on the plurality of light-emitting units 11, the advertising picture 3 is arranged on the transparent back plate 2, wherein the advertising picture 3 has a pattern area 311 and a background area 312, and the controller 4 is electrically connected to the light source 1; when in use, the controller 4 can be configured to light up the plurality of light-emitting units 11 corresponding to the pattern area 311 of the advertising picture 3, that is, only light up the target light-emitting area. In order to improve reliability, the advertisement device Z with high contrast of the present invention may further include a transparent panel 6, which is disposed on the advertisement image 3 to isolate the advertisement image 3 from the outside.

As shown in FIG. 7 , the main difference between this embodiment and the first embodiment is that the advertisement image 3 includes an upper layer image 31 and a lower layer image 32, the upper layer image has the pattern area 311 (non-black area) and background area 312 (first black area) described in the first embodiment, and the lower layer image 32 has a white area 321 and a black area 322 (second black area). In this embodiment, the shape, outline, position and size of the white area 321 of the lower layer image 32 are completely consistent with the pattern area 311 of the upper layer image 31, and the light emitted by the multiple light-emitting units 11 that are lit up to the pattern area 311 of the upper layer image 31 is allowed to penetrate, making the light and dark contrast of the advertisement screen more obvious. In addition, the black area 322 of the lower image 32 is completely consistent with the shape, outline, position and size of the background area 312 of the upper image 31, and can block the light emitted by the multiple illuminated light-emitting units 11 to the background area 312 of the upper image 31, so that the edges of the advertising screen have sharp and clear effects.

The relevant technical details mentioned in the first embodiment are still valid in this embodiment, and in order to reduce repetition, they are not repeated here. Similarly, the relevant technical details mentioned in this embodiment can also be applied in the first embodiment.

[Third Embodiment]

Please refer to FIG. 1 to FIG. 3 , and in conjunction with FIG. 8 , the third embodiment of the present invention provides an advertising device Z with high contrast, which includes a light source 1, a transparent back plate 2, an advertising picture 3, and a controller 4. The light source 1 includes a plurality of light-emitting units 11 arranged at intervals, the transparent back plate 2 is arranged on the plurality of light-emitting units 11, the advertising picture 3 is arranged on the transparent back plate 2, wherein the advertising picture 3 has a pattern area 311 and a background area 312, and the controller 4 is electrically connected to the light source 1; when in use, the controller 4 can be configured to light up the plurality of light-emitting units 11 corresponding to the pattern area 311 of the advertising picture 3, that is, only light up the target light-emitting area. In order to improve reliability, the advertisement device Z with high contrast of the present invention may further include a transparent panel 6, which is disposed on the advertisement image 3 to isolate the advertisement image 3 from the outside.

As shown in FIG7 , the main difference between this embodiment and the above-mentioned embodiment is that each light-emitting unit 11 of the light source 1 includes a light-emitting structure 111, a light-guiding layer 113 and a light-reflecting layer 114. The light-guiding layer 113 is arranged on a light-emitting surface 111s of the light-emitting structure 111 and has a top surface 113s1 away from the light-emitting surface 111s and a ring side surface 113s2 connected to the top surface 113s1. The light-reflecting layer 114 is arranged on the top surface 113s1 of the light-guiding layer 113. In the above structure, the light L1 emitted by the light emitting structure 111 enters the light guiding layer 113, and generates light L2 traveling toward the annular side surface 113s2 of the light guiding layer 113 under the reflection effect of the light reflecting layer 114, and finally is emitted from the annular side surface 113s2 of the light guiding layer 113 to achieve the effect of large-angle light emission. It is worth mentioning that the light emitting unit 11 adopting the above structure can improve its light extraction efficiency by more than 10%.

The relevant technical details mentioned in the first and second embodiments are still valid in this embodiment, and in order to reduce repetition, they are not repeated here. Similarly, the relevant technical details mentioned in this embodiment can also be applied to the first and second embodiments.

[Beneficial Effects of Embodiments]

One of the beneficial effects of the present invention is that in the advertising device with high contrast of the present invention, the controller is electrically connected to the light source, and the controller is configured to light up a plurality of light-emitting units corresponding to the pattern area of the advertising picture, thereby improving the display contrast, making the light and dark contrast between the pattern or text on the advertising picture and the background more obvious, and reducing energy consumption. In addition, when the advertising device with high contrast of the present invention is used, only the target light-emitting area will be lit, and the brightness of the target light-emitting area is consistent, so the displayed advertising picture will not have color deviation or unclear color gradation.

Furthermore, quantum dot materials can be applied to the advertising device with high contrast of the present invention, for example, a quantum dot film is disposed between a plurality of light-emitting units and a transparent back plate, or each light-emitting unit is configured to include a light-emitting structure and a quantum dot layer to improve the color vividness of the advertising screen.

Furthermore, the advertising image may include an upper layer image and a lower layer image, wherein the upper layer image has a pattern area (the area where the advertising elements are located) and a background area (black background area), and the lower layer image has a white area corresponding to the pattern area and a black area corresponding to the background area, so that the edges of the advertising screen have a sharp and clear effect.

The contents disclosed above are only preferred feasible embodiments of the present invention and are not intended to limit the scope of the patent application of the present invention. Therefore, all equivalent technical changes made using the contents of the specification and drawings of the present invention are included in the scope of the patent application of the present invention.

Z: Advertising device with high contrast 1: Light source 11: Light-emitting unit 111: Light-emitting structure 111s: Light-emitting surface 112: Quantum dot layer 113: Light-guiding layer 113s1: Top surface 113s2: Side surface 114: Light-reflecting layer 12: Circuit board 2: Transparent backplane 3: Advertising image 31: Upper image 311: Pattern area 312: Background area 32: Lower image 321: White area 322: Black area 3c: Color information 4: Controller 5: Device housing 51: Frame 52: Backplane 6: Transparent panel 7: Quantum dot film L1, L2: Light

FIG. 1 is a three-dimensional exploded assembly diagram of an advertising device with high contrast according to an embodiment of the present invention.

FIG. 2 is a schematic diagram of a three-dimensional assembly of an advertisement device with high contrast according to an embodiment of the present invention.

FIG. 3 is another schematic diagram of a three-dimensional assembly of an advertisement device with high contrast according to an embodiment of the present invention.

FIG. 4 is a schematic diagram of an operation of an advertisement device with high contrast according to an embodiment of the present invention.

FIG. 5 is another schematic diagram of the operation of the advertising device with high contrast according to the embodiment of the present invention.

FIG. 6 is a schematic structural diagram of a light-emitting unit used in an advertisement device with high contrast according to an embodiment of the present invention.

FIG. 7 is another schematic diagram of the operation of the advertising device with high contrast according to the embodiment of the present invention.

FIG. 8 is another schematic diagram of the structure of the light-emitting unit used in the advertisement device with high contrast according to the embodiment of the present invention.

Z: Advertising device with high contrast

1: Light source

2: Transparent back panel

3: Advertising images

4: Controller

5: Device housing

51: Frame

52: Back panel

6: Transparent panel

Claims (10)

An advertising device with high contrast, comprising: a light source, the light source comprising a plurality of light-emitting units arranged at intervals; a transparent back plate, the transparent back plate being arranged on the plurality of light-emitting units; an advertising picture, the advertising picture being arranged on the transparent back plate, wherein the advertising picture has a pattern area and a background area; and a controller, the controller being electrically connected to the light source, wherein the controller is configured to light up the plurality of light-emitting units corresponding to the pattern area of the advertising picture. An advertising device with high contrast as described in claim 1, wherein the plurality of light-emitting units lit by the controller have the same brightness. An advertising device with high contrast as described in claim 1, wherein the advertising image is a printed advertising image and includes an upper layer image and a lower layer image; wherein the upper layer image has the pattern area and the background area, the pattern area is a non-black area and the background area is a first black area, and the lower layer image has a white area corresponding to the pattern area and a second black area corresponding to the background area. The advertising device with high contrast as described in claim 1 further includes a quantum dot film, which is arranged between the transparent back plate and the plurality of light-emitting units, and the thickness of the transparent back plate is 0.5 cm to 3 cm. An advertising device with high contrast as described in claim 4, wherein the plurality of light-emitting units are configured to emit blue light, and the quantum dot film contains red quantum dots and green quantum dots. The advertising device with high contrast as described in claim 1, wherein each of the light-emitting units includes a light-emitting structure and a quantum dot layer, and the quantum dot layer covers a light-emitting surface of the light-emitting structure. An advertising device with high contrast as described in claim 6, wherein the light-emitting structure is a blue light-emitting diode, and the quantum dot layer contains red quantum dots and green quantum dots. The advertising device with high contrast as described in claim 1 further includes a transparent panel, which is disposed on the advertising image, and the transparent panel is configured to isolate the advertising image from the outside world. An advertising device with high contrast as described in claim 1, wherein the plurality of light-emitting units are arranged in an array at a predetermined interval, the predetermined interval is 2 mm to 6 mm, and the light-emitting angle of each of the light-emitting units is between 150° and 180°. An advertising device with high contrast as described in claim 9, wherein each of the light-emitting units includes a light-emitting structure, a light-guiding layer and a light-reflecting layer, the light-guiding layer is arranged on a light-emitting surface of the light-emitting structure and has a top surface away from the light-emitting surface and a ring side surface connected to the top surface, and the light-reflecting layer is arranged on the top surface of the light-guiding layer.

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