LED structure and LED screen thereof

Abstract

The invention relates to the technical field of LEDs, in particular to an LED structure and an LED screen thereof.The LED structure comprises a substrate, a plurality of bulbs are fixedly installed on the substrate in an array mode, the substrate and the bulbs are jointly provided with compensation devices, each bulb is provided with one compensation device, the compensation devices guide light emitted by the bulbs in a reflection mode, and the light emitted by the bulbs is reflected by the compensation devices. A light gathering device is arranged on the substrate, the light gathering device is used for gathering light of a plurality of bulbs to the same compensation device, the compensation device comprises a mounting plate fixedly mounted on the bulbs, an optical fiber is fixedly mounted on the mounting plate, and one end of the optical fiber extends out of one side, far away from the substrate, of the mounting plate; and a reflecting part I is arranged on one side, close to the substrate, of the mounting plate. The invention provides an LED structure and an LED screen thereof so as to improve readability and accuracy of information displayed by the LED screen after local LED bulbs of the LED screen are damaged.

Description

Technical Field

[0001] The invention relates to the technical field of LEDs, and in particular to an LED structure and an LED screen thereof. Background Art

[0002] LED display is a flat panel display, which is composed of small LED structures spliced ​​in an array, and is used to display text, images and other information. At present, monochrome LED dot matrix screens are widely used in various scenarios such as advertising and transportation that require flexible display of text information.

[0003] The general arrangement of existing LED screens is shown in the patent number: CN102419936B, and the patent name is: small dot pitch LED dot matrix block and its preparation method. During the long-term use of this type of LED screen, the LED bulbs inside it may be damaged due to short circuits and other reasons. At this time, after individual or a small part of the bulbs are damaged, the continuity and accuracy of the text and patterns displayed on the LED screen will be affected, which may cause misreading of information.

[0004] To this end, an LED structure and an LED screen thereof are proposed. Summary of the invention

[0005] The object of the present invention is to provide an LED structure and an LED screen thereof, so as to improve the readability and accuracy of information displayed on the LED screen after a local LED bulb of the LED screen is damaged.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] An LED structure includes a substrate, on which a plurality of light bulbs are fixedly mounted in an array manner, a compensation device is provided on the substrate and the light bulbs, and each light bulb is provided with a compensation device, the compensation device guides the light emitted by the light bulb in a reflective manner, and a focusing device is provided on the substrate, the focusing device is used to focus the light of the plurality of light bulbs onto the same compensation device.

[0008] Based on this setting, when a single bulb on the LED structure of the present invention is damaged due to a short circuit or other reasons, the light of other bulbs adjacent to the damaged bulb can be guided to the damaged bulb through the compensation device and projected outward, so that the position of the damaged bulb can still project light, thereby ensuring the display integrity of the LED light-emitting dot matrix when the present invention is emitting light, thereby improving the readability and accuracy of information. At the same time, when multiple LED structures of the present invention are spliced ​​into a larger light-emitting dot matrix, the focusing device can focus the light of bulbs at a farther distance to the damaged bulb in a reflected manner, so that the damaged part can have a higher brightness when projecting light, ensuring the readability and accuracy of information.

[0009] Preferably, the compensation device includes a mounting plate fixedly mounted on the light bulb, an optical fiber fixedly mounted on the mounting plate, and one end of the optical fiber extends out of a side of the mounting plate away from the substrate; a reflecting portion 1 is provided on a side of the mounting plate close to the substrate, and the reflecting portion 1 is used to reflect the light of the light bulb to other optical fibers provided in an adjacent compensation device.

[0010] Through this arrangement, when the light bulb is normally lit, part of the light emitted by the light bulb will be reflected by the reflecting part 1 to the compensation device arranged on the adjacent light bulb, and this part of the reflected light will be emitted to the end of the optical fiber on the adjacent compensation device. Therefore, if a light bulb of the present invention is damaged and cannot emit light for some reason, the optical fiber will guide the light emitted by other light bulbs to the position where the damaged light bulb is located, so that the point where the damaged light bulb is located can still project light outward with a lower brightness, thereby ensuring that the readability and accuracy of the displayed information are not damaged.

[0011] The following is a specific example: a compensation device X is provided on light bulb A, and a compensation device Y is provided on light bulb B. When light bulb A is lit, the light emitted by light bulb A will be reflected by the reflective portion 1 in compensation device X to the optical fiber in compensation device Y, thereby guiding a portion of the light emitted by light bulb A to the location of light bulb B. Therefore, even if light bulb B is burned out and cannot emit light, a portion of the light emitted by light bulb A will be guided to the point where light bulb B is located, so that the point where light bulb B is located can still be projected outward with a lower brightness, thereby ensuring that the readability and accuracy of the displayed information are not destroyed.

[0012] In addition, considering that part of the light emitted by the bulb will be guided to other points of the light-emitting dot matrix, the light directly projected outward by the bulb at its position will be reduced, which may cause the brightness of the bulb at its position to decrease when it is emitting light. For this reason, a second reflector is provided. The second reflector is provided on the mounting plate, and the second reflector is arranged symmetrically with the first reflector. At this time, when the bulb is emitting light, in addition to part of the light reflected by the first reflector, the rest of the light will be concentrated and reflected outward by the second reflector, so that the light is concentrated locally to form a local highlight, thereby improving the brightness of the point where the bulb is located when emitting light, and ensuring the readability and accuracy of the displayed information.

[0013] Preferably, the focusing device includes a mirror portion arranged on a substrate, the mirror portion is arranged on a side of the substrate close to the reflecting portion 1, a plurality of columns are fixedly mounted on the mounting plate; and the optical fiber is fixedly mounted on the side of the column.

[0014] Through this arrangement, when multiple LED structures of the present invention are used to form a larger LED screen, multiple substrates will be spliced ​​together, and thus multiple mirror parts will also be spliced ​​into a larger mirror surface. At this time, the light emitted from the bulb will first be reflected by the reflection part 1 onto the large mirror surface spliced ​​by the multiple mirror parts, and then the light will be repeatedly reflected between each mirror part and each reflection part 1 to be emitted to a farther position, so that other optical fibers at a farther position from the light-emitting bulb can also receive the light emitted by the bulb.

[0015] Therefore, if a certain light bulb is damaged and cannot emit light, the light emitted by other intact light bulbs on the same LED screen will be able to provide light to the point where the damaged light bulb is located, so that the point where the damaged light bulb is located can still emit light outwardly. This means that the intensity of the light displayed outwardly from the damaged light bulb will be greater, which is more conducive to ensuring that the readability and accuracy of the displayed information is not damaged.

[0016] It is worth noting that the column can also be used to fix the optical fiber, so that the structural strength of the column can be used to resist the force attempting to bend the optical fiber. Therefore, the optical fiber will not be damaged due to excessive bending during the installation process or use of the present invention, thereby improving the reliability of the present invention.

[0017] Preferably, a ring is fixedly mounted on the mounting plate, the ring is sleeved on the outside of the bulb, and the ring is made of silicone; the cross-sectional shape of the ring is a triangle, and one vertex of the triangle is against the outside of the bulb.

[0018] With this arrangement, when the mounting plate is fixed to the light bulb, the elastic force of the collar can be utilized to enable the mounting plate to be fixed to the light bulb in an interference fit manner without damaging the light bulb. In addition, since the cross-sectional shape of the collar is a triangle, and one vertex of the triangle abuts against the outside of the light bulb, the collar will be more likely to bend and deform at the portion where the collar abuts against the light bulb, which can more effectively avoid damage to the light bulb during the clamping process.

[0019] Preferably, a protective baffle is fixedly mounted on the plurality of columns, and the protective baffle is made of transparent plastic material.

[0020] By providing the protective baffle, the bulb can be protected from being corroded or damaged by the external environment, thereby improving the reliability of the present invention. In addition, the protective baffle can also absorb the light emitted by the bulb, thereby forming a bright surface and reducing the glare caused by the brightness emitted by the bulb.

[0021] Preferably, dimming glass is fixedly mounted on the plurality of columns, and the circuit of the dimming glass is connected in parallel with the circuit of the light bulb.

[0022] Due to the arrangement of the optical fiber and the mirror portion, even if a certain bulb is not controlled to emit light by the control system, the light emitted by other bulbs will illuminate the point where the bulb that does not need to emit light is located at a lower brightness, which may also have a negative impact on the readability and accuracy of the displayed information. In particular, when the light-emitting dot matrix of the LED screen spliced ​​by the present invention is densely packed, the possibility of such a negative impact is greater.

[0023] Therefore, dimming glass is set. Therefore, when the light bulb is not powered on and does not emit light, the dimming glass is not powered on either, thus maintaining an opaque state. At this time, the light drawn from the optical fiber will be blocked and absorbed by the dimming glass, thereby reducing the amount of light projected outward. Therefore, the brightness at the point where the light bulb is located will be reduced, so that the readability and accuracy of the displayed information will not be damaged at this time, avoiding the above-mentioned problems. When the light bulb is controlled to be powered on and emit light, the dimming glass is powered on and becomes transparent. At this time, both the light guided by the optical fiber and the light of the light bulb itself can pass through the dimming glass unimpeded, so that the point where the light bulb is located is normally lit, thereby allowing the information displayed on the LED screen to be read normally.

[0024] Preferably, an LED screen is provided with the above-mentioned LED structure, the LED screen comprises a housing, the substrate is fixedly mounted on the housing, the housing is provided with airflow holes, the airflow holes are used to exchange the air between the substrate and the mounting plate with the outside air. By setting, the airflow holes will allow the air between the substrate and the mounting plate to be exchanged with the outside air, thereby providing heat dissipation and cooling for each bulb mounted on the substrate, thereby preventing the bulb from being damaged due to overheating.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. By setting a compensation device, when a single bulb on the LED structure of the present invention is damaged due to a short circuit or the like, the light of other bulbs adjacent to the damaged bulb can be guided to the damaged bulb through the compensation device and projected outward, so that the position of the damaged bulb can still project light, thereby ensuring the display integrity of the LED light-emitting dot matrix when the present invention is emitting light, thereby improving the readability and accuracy of the information.

[0027] 2. By setting a focusing device, when multiple LED structures of the present invention are used to splice into a larger LED screen, the light emitted from the bulb will first be reflected by the reflecting part 1 onto the large mirror surface spliced ​​by multiple mirror parts. Subsequently, the light will be repeatedly reflected between each mirror part and each reflecting part 1 to be emitted to a farther position, so that other optical fibers at a farther position from the light-emitting bulb can also receive the light emitted by the bulb, so that the damaged part can have a higher brightness when projecting light, thereby ensuring the readability and accuracy of the information.

[0028] 3. By setting the dimming glass, when the light bulb is not powered on and does not emit light, the dimming glass remains opaque. At this time, the light drawn from the optical fiber will be blocked and absorbed by the dimming glass, thereby reducing the amount of light projected outward. As a result, the brightness at the point where the light bulb is located will be reduced, so that the readability and accuracy of the displayed information will not be damaged at this time. When the light bulb is controlled to be powered on and emit light, the dimming glass becomes transparent, so that the light guided by the optical fiber and the light of the light bulb itself can pass through, so that the point where the light bulb is located is normally lit, so that the information displayed on the LED screen can be read normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the LED structure of the present invention;

[0030] Figure 2 for Figure 1 A schematic plan view of the main view of the

[0031] Figure 3 It is a schematic diagram of an assembly after a plurality of LED structures of the present invention are spliced ​​together;

[0032] Figure 4 for Figure 3 Schematic diagram of the structure after removing the dimming glass and protective baffle;

[0033] Figure 5 for Figure 3 A schematic plan view of the main view of the

[0034] Figure 6 It is a schematic diagram of the overall structure of the LED screen of the present invention;

[0035] Figure 7 for Figure 6 A schematic plan view of the main view of the

[0036] Figure 8 This is a schematic structural diagram of the LED structure of the present invention when the upper end of the optical fiber is fixedly mounted on the dimming glass.

[0037] In the figure: 1. substrate; 2. mounting plate; 3. protective baffle; 4. housing; 11. column; 12. bulb; 13. mirror portion; 14. pin; 15. through hole; 21. reflective portion 2; 22. optical fiber; 23. collar; 24. reflective portion 1; 31. dimming glass; 41. air flow hole; 42. support column; 43. panel. DETAILED DESCRIPTION

[0038] The following content will use the drawings listed in the aforementioned "Description of Drawings" section to clearly explain the specific implementation methods of the present invention, in the hope that readers can have a more complete and objective understanding of the working principle of the present invention and the corresponding technical effects.

[0039] like Figures 1 to 7 As shown, a specific embodiment of the present invention is shown. Among them, several points should be explained in advance: first, a through hole 15 is pre-opened on the mirror surface 13, so that the pin 14 of the bulb 12 can pass through the mirror surface 13 and connect with the circuit on the substrate 1; second, a panel 43 is fixedly installed on the housing 4 of the LED screen, and a pattern can be preset on the panel 43, so that more diverse patterns can be displayed using the light emitted by the bulb 12; third, a plurality of support columns 42 are fixedly installed in the housing 4 to support and fix the assembly composed of a plurality of LED structures of the present invention, so that the LED structure does not need to have a large area of ​​contact with the housing 4, thereby reducing the risk of interference between components in the present invention and reducing the risk of damage caused by component collision.

[0040] When the present invention is installed, the substrate 1 is first taken out, and then a plurality of bulbs 12 are fixedly mounted on the substrate 1 in an array manner. A compensation device is provided on both the substrate 1 and the bulbs 12, and a compensation device is provided on each bulb 12. The compensation device guides the light emitted by the bulb 12 in a reflective manner. A focusing device is provided on the substrate 1, and the focusing device is used to focus the light of the plurality of bulbs 12 onto the same compensation device.

[0041] The compensation device includes a mounting plate 2 fixedly mounted on the bulb 12, an optical fiber 22 fixedly mounted on the mounting plate 2, and one end of the optical fiber 22 extends out of the mounting plate 2 away from the substrate 1; a reflector 24 is arranged on the side of the mounting plate 2 close to the substrate 1, and the reflector 24 is used to reflect the light of the bulb 12 to other optical fibers 22 arranged in the adjacent compensation device. The focusing device includes a mirror portion 13 arranged on the substrate 1, and the mirror portion 13 is arranged on the side of the substrate 1 close to the reflector 24. A plurality of columns 11 are fixedly mounted on the mounting plate 2; and the optical fiber 22 is fixedly mounted on the side of the column 11.

[0042] In addition, a collar 23 is fixedly mounted on the mounting plate 2, and the collar 23 is sleeved on the outside of the bulb 12. The collar 23 is made of silicone. The cross-sectional shape of the collar 23 is a triangle, and one vertex of the triangle is against the outside of the bulb 12. A second reflector 21 is provided on the mounting plate 2, and the second reflector 21 is symmetrically arranged with the first reflector 24. A protective baffle 3 is fixedly mounted on the plurality of columns 11, and the protective baffle 3 is made of transparent plastic. A dimming glass 31 is fixedly mounted on the plurality of columns 11, and the circuit of the dimming glass 31 is connected in parallel with the circuit of the bulb 12.

[0043] Subsequently, the above structure is repeatedly assembled and arrayed to form a whole LED screen, and finally, the housing 4 is taken out, and the substrate 1 of the assembled LED screen is fixedly mounted on the housing 4. In addition, the housing 4 is provided with air flow holes 41, and the air flow holes 41 are aligned with the gap between the substrate 1 and the mounting plate 2, so that the air in the gap can be exchanged with the external air.

[0044] When the present invention is working, when a single bulb 12 on the LED structure of the present invention is damaged due to a short circuit or other reasons, the light of other bulbs 12 adjacent to the damaged bulb 12 can be guided to the damaged bulb 12 through the compensation device and projected outward, so that the position of the damaged bulb 12 can still project light, thereby ensuring the display integrity of the LED light-emitting dot matrix when the present invention is emitting light, thereby improving the readability and accuracy of information. At the same time, when multiple LED structures of the present invention are spliced ​​into a larger light-emitting dot matrix, the focusing device can focus the light of the bulb 12 at a farther distance to the damaged bulb 12 in a reflected manner, so that the damaged part can have a higher brightness when projecting light, ensuring the readability and accuracy of information.

[0045] When the light bulb 12 is normally lit, part of the light emitted by the light bulb 12 will be reflected by the reflector 1 24 to the compensation device disposed on the adjacent light bulb 12, and this part of the reflected light will be emitted to the end of the optical fiber 22 on the adjacent compensation device. Therefore, if a light bulb 12 of the present invention is damaged and cannot emit light for some reason, the optical fiber 22 will guide the light emitted by other light bulbs 12 to the position where the damaged light bulb 12 is located, so that the point where the damaged light bulb 12 is located can still project light outward at a lower brightness, thereby ensuring that the readability and accuracy of the displayed information are not damaged.

[0046] Specifically, the bulb 12A is provided with a compensation device X, and the bulb 12B is provided with a compensation device Y. When the bulb 12A is lit, the light emitted by the bulb 12A will be reflected by the reflective portion 24 in the compensation device X to the optical fiber 22 in the compensation device Y, thereby guiding a portion of the light emitted by the bulb 12A to the position of the bulb 12B; therefore, even if the bulb 12B is burned out and cannot emit light, a portion of the light emitted by the bulb 12A will be guided to the point where the bulb 12B is located, so that the point where the bulb 12B is located can still be projected outward with a lower brightness, thereby ensuring that the readability and accuracy of the displayed information are not destroyed.

[0047] In addition, considering that part of the light emitted by the bulb 12 will be guided to other points of the light-emitting dot matrix, the light directly projected outward by the bulb 12 at its position will be reduced, which may cause the brightness of the position where the bulb 12 is located to decrease when the bulb 12 is emitting light, and for this reason, a second reflector 21 is provided. The second reflector 21 is provided on the mounting plate 2, and the second reflector 21 is arranged symmetrically with the first reflector 24. At this time, when the bulb 12 is emitting light, in addition to part of the light reflected by the first reflector 24, the rest of the light will be concentratedly reflected outward by the second reflector 21, so that the light is locally concentrated to form a local highlight, thereby improving the brightness of the point where the bulb 12 is located when emitting light, and ensuring the readability and accuracy of the displayed information.

[0048] In addition, when the light bulb 12 is lit, the light emitted from the light bulb 12 will first be reflected by the reflective portion 24 onto a large mirror surface formed by a plurality of mirror portions 13, and then the light will be repeatedly reflected between each mirror portion 13 and each reflective portion 24 to be emitted to a farther position, so that other optical fibers 22 at a farther position from the light bulb 12 can also receive the light emitted by the light bulb 12.

[0049] Therefore, if a certain light bulb 12 on the entire LED screen is damaged and cannot emit light, the light emitted by other undamaged light bulbs 12 on the same LED screen can provide light to the point where the damaged light bulb 12 is located, so that the point where the damaged light bulb 12 is located can still emit light externally. This means that the intensity of the light displayed externally from the damaged light bulb 12 will be greater, which is more conducive to ensuring that the readability and accuracy of the displayed information are not damaged.

[0050] It is worth adding that, due to the arrangement of the optical fiber 22 and the mirror portion 13, even if a certain bulb 12 is not controlled by the control system to emit light, the light emitted by other bulbs 12 will illuminate the point where the bulb 12 that does not need to emit light is located at a lower brightness, which may also have a negative impact on the readability and accuracy of the displayed information. In particular, when the light-emitting dot matrix of the LED screen spliced ​​by the present invention is densely packed, the possibility of such a negative impact is greater.

[0051] Therefore, dimming glass 31 is provided. Thus, when the light bulb 12 is not powered on and does not emit light, the dimming glass 31 is not powered on either, thereby maintaining an opaque state. At this time, the light drawn out from the optical fiber 22 will be blocked and absorbed by the dimming glass 31, thereby reducing the amount of light projected outward. Therefore, the brightness at the point where the light bulb 12 is located will be reduced, thereby not causing damage to the readability and accuracy of the displayed information at this time, thereby avoiding the above-mentioned problems. When the light bulb 12 is controlled to be powered on and emit light, the dimming glass 31 is powered on and becomes transparent. At this time, whether it is the light guided by the optical fiber 22 or the light of the light bulb 12 itself, both can pass through the dimming glass 31 unimpeded, thereby making the point where the light bulb 12 is located normally lit, thereby making the information displayed on the LED screen normally readable.

[0052] It is worth mentioning that Figure 2 and Figure 5 In the installation method of the optical fiber 22 shown, the upper end of the optical fiber 22 is not directly fixed to the dimming glass 31. This installation method is suitable for the case where the brightness of the light bulb 12 is high. At this time, the end of the optical fiber 22 is not directly fixed to the dimming glass 31, and the light can be diverged on the way from the end of the optical fiber 22 to the dimming glass 31, so that the light can evenly illuminate the point where it is located, and at the same time, the local light spot is not too strong, thereby reducing the generation of glare.

[0053] In another case, when the light bulb 12 is lit at a low brightness, the following method can be used: Figure 8 The optical fiber 22 installation method shown is to directly fix the upper end of the optical fiber 22 on the dimming glass 31. At this time, although the light can no longer guarantee uniform illumination of the point where it is located, the light will be more concentrated within a certain area, obtaining a higher brightness at the point at the expense of uniformity, thereby improving visibility and also helping to improve the readability of the displayed content.

[0054] It should be emphasized that, based on the contents recorded in the above text, although the beneficial effects of the present invention have been elaborated in detail and corresponding specific implementation methods have been provided for this purpose, ordinary technicians in this field can still make conventional substitutions, deformations, etc. based on the given technical solutions without creative labor to achieve the same technical effects, based on the full understanding of the working principle of the present invention, but this should not be considered to exceed the scope of the present invention. Specifically, the scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. An LED structure, comprising a substrate (1), on which a plurality of light bulbs (12) are fixedly mounted in an array, characterized in that: The substrate (1) and the light bulbs (12) are provided with a compensation device, and each light bulb (12) is provided with a compensation device, the compensation device guides the light emitted by the light bulb (12) in a reflection manner, the substrate (1) is provided with a focusing device, the focusing device is used to focus the light of multiple light bulbs (12) onto the same compensation device; the light bulb (12) is provided with an adjustment device, the adjustment device is used to control the brightness or extinction of the point where the light bulb (12) is located.

2. The LED structure according to claim 1, characterized in that: The compensation device comprises a mounting plate (2) fixedly mounted on the light bulb (12), an optical fiber (22) fixedly mounted on the mounting plate (2), and one end of the optical fiber (22) extends out of a side of the mounting plate (2) away from the substrate (1); a reflecting portion (24) is arranged on a side of the mounting plate (2) close to the substrate (1), and the reflecting portion (24) is used to reflect the light of the light bulb (12) to other optical fibers (22) arranged in an adjacent compensation device.

3. The LED structure according to claim 2, characterized in that: The focusing device comprises a mirror portion (13) arranged on a substrate (1), wherein the mirror portion (13) is arranged on a side of the substrate (1) close to a reflecting portion (24), and a plurality of columns (11) are fixedly mounted on the mounting plate (2); the optical fiber (22) is fixedly mounted on the side of the column (11).

4. The LED structure according to claim 3, characterized in that: A collar (23) is fixedly mounted on the mounting plate (2), the collar (23) being sleeved on the outside of the bulb (12), the collar (23) being made of silicone; the cross-sectional shape of the collar (23) is a triangle, and one vertex of the triangle abuts against the outside of the bulb (12).

5. The LED structure according to claim 3, characterized in that: The mounting plate (2) is provided with a second reflecting portion (21), and the second reflecting portion (21) is arranged symmetrically with the first reflecting portion (24).

6. The LED structure according to claim 3, characterized in that: A protective baffle (3) is fixedly mounted on the plurality of upright posts (11), and the protective baffle (3) is made of a transparent plastic material.

7. The LED structure according to claim 3, characterized in that: The adjustment device comprises a dimming glass (31) fixedly mounted on a plurality of columns (11) at the same time, and the circuit of the dimming glass (31) is connected in parallel with the circuit of the light bulb (12).

8. An LED screen, characterized in that: The LED screen is configured with any one of the LED structures of claims 1 to 7, and the LED screen comprises a housing (4), the substrate (1) is fixedly mounted on the housing (4), and the housing (4) is provided with air flow holes (41), and the air flow holes (41) are used to exchange the air between the substrate (1) and the mounting plate (2) with the external air.

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