PCB bending single type LED module for floor pedestrian traffic lights

Abstract

The present invention provides a single-type LED module for a floor pedestrian signal light that is installed embedded at the boundary between the roadway and the sidewalk of a crosswalk, which is installed to light up in conjunction with a crosswalk signal light and is installed within an external housing body to control light emission in green or red, thereby providing efficient prevention of roadway intrusion light by unifying PCB connection connectors and harness processing by bending LED elements at a single inclination for each LED element on an integrated single PCB of the LED module. The LED module comprises: an LED element installed to emit green or red light by arranging a plurality of pairs of green LEDs and red LEDs at intervals from each other to form a pair, and a single PCB board having a bending inclination portion formed by bending the LED element on the upper surface and circuit-connecting it, corresponding to each pair of LED elements combined with the green LED and the red LED, and formed by bending the LED element at an upward inclination so that the light source of the LED element faces the sidewalk side.

Description

Technology Field

[0001] The present invention relates to a PCB bending single-type LED module for a ground pedestrian signal light, and more specifically, to a PCB bending single-type LED module for a ground pedestrian signal light installed on a sidewalk or the ground surface of a crosswalk near a crosswalk, wherein the integrated single PCB of the LED module is bent at a single inclination for each LED element, thereby enabling efficient prevention of roadway intrusion light. Background Technology

[0003] Generally, crosswalks are provided to allow pedestrians to safely cross roads where vehicles travel, and they are primarily installed around road intersections or other places with a high volume of pedestrians.

[0005] It is common for pedestrian crossing traffic lights to be installed at such crossings to periodically display stop and cross signals, and the pedestrian crossing traffic lights are installed at a certain height from the ground using a support.

[0007] In this case, although crosswalk traffic lights are installed at eye level, pedestrians must look up to check the signal. For instance, since it is difficult to see the signal when looking down, pedestrians using mobile phones with their heads down are unable to perceive their surroundings and therefore find it difficult to check the traffic light, which poses a high risk of accidents at crosswalks.

[0009] Accordingly, ground-type pedestrian traffic lights linked to the crosswalk traffic lights were installed on sidewalks or the surface of crosswalks near them, enabling pedestrians with their heads down to clearly and quickly perceive changes in the traffic signals.

[0011] As prior art disclosed in relation to the above-mentioned floor pedestrian signal lights, Korean Registered Patent Publication No. 2548695 (June 23, 2023) discloses an LED floor signal light comprising an upper case, a PCB installed inside the upper case with a plurality of LED elements mounted thereon, and a lower case coupled to the upper case, wherein a plurality of protrusions are formed spaced apart on the upper surface of the upper plate of the upper case exposed on the ground, and the protrusions are configured to have front and rear surfaces facing the sidewalks on both sides of the crosswalk, left and right sides facing the direction of vehicle travel, and an upper surface connected to the top of the front and rear surfaces and left and right sides, wherein the upper plate of the upper case between the protrusions and the left and right sides and the upper surface of the protrusions are configured as opaque surfaces, and the front and rear surfaces of the protrusions are configured as light-transmitting surfaces, so that light emitted from the LED elements is transmitted and emitted toward the sidewalk through the front and rear surfaces of the protrusions, thereby enabling people waiting at the waiting position of the crosswalk to clearly recognize the lighting signal of the signal light, and thus a floor signal light with improved visibility in both directions of the crosswalk is disclosed. there is.

[0013] In addition, Registered Patent Publication No. 2574794 (August 31, 2023) discloses a floor-type pedestrian signal light having improved luminous efficiency, wherein the structure is formed by laminating an upper cover and a lower plate, and a PCB board equipped with a plurality of LEDs is configured inside the upper cover, wherein the lower surface of the upper cover has an integrated structure in which a damper part protrudes to allow close contact with the LED, and the lower surface of the damper part has a contact coating layer formed to prevent the occurrence of a gap with the LED, and the contact coating layer is configured to have a mixed composition of acrylic resin, trimethylsulfonium chloride, polycaprolactone, alkylselenic acid, p-tolyl octanoate, and cetearyl octanoate, thereby minimizing the amount of LED light reduced inside the cover body and improving the luminous efficiency of the floor signal light.

[0015] In addition, Registered Patent Publication No. 2561887 (July 27, 2023) discloses a floor-type pedestrian signal light comprising: a main body installed by being embedded in the boundary surface between a roadway and a sidewalk where a crosswalk is installed; a support module having a uniform height overall, with a bottom installed horizontally on the inner upper part of the main body and a plurality of LED installation parts formed on the upper part having a structure that is repeatedly inclined at a certain angle toward the direction of pedestrians; an LED module, each installed separately in the LED installation part of the support module and illuminated in conjunction with a crosswalk signal light, and emitting light toward pedestrians by the LED installation part; and a cover installed to completely cover the upper part of the main body; wherein, when the LED module emits light, the height difference between the LED module and the cover is minimized by the shape and installation structure of the support module, thereby enabling surface light emission of uniform brightness without glare caused by light emitted from the LED module across the entire surface area of ​​the cover.

[0017] However, in the case of the aforementioned prior art, registered patent publications No. 2548695 and No. 2574794, both have a problem in that the uniformity and light quality of the product are poor because the light is not uniformly emitted due to height deviations where the distance from the display surface to each LED element is different, and the PCB itself is tilted so that the light source of the LED element is directed toward the direction of delivery.

[0019] Furthermore, in the case of Registered Patent Publication No. 2561887 among the aforementioned prior art, since a split-type PCB (LED installation section) applied individually to each LED element is used for individual tilted installation, connection connectors and multiple harnesses must be processed for each PCB, and a separate assembly process for multiple reflectors is required. Consequently, there was a problem in that the product manufacturing process was complex and the unit cost was high, resulting in reduced productivity and price competitiveness. Prior art literature

[0021] KR Registered Patent Publication No. 10-2548695 (June 23, 2023) KR Registered Patent Publication No. 10-2574794 (August 31, 2023) KR Registered Patent Publication No. 10-2561887 (July 27, 2023) The problem to be solved

[0022] The present invention aims to solve the above-mentioned problems by providing a single-type LED module for floor pedestrian traffic lights that improves the uniformity and light quality of the floor pedestrian traffic light by applying an integrated single PCB of the LED module and configuring it to form a single inclination for each LED element, and improves process productivity through a single connection connector and single harness processing of the PCB. means of solving the problem

[0024] The PCB bending single-type LED module for a ground pedestrian signal light proposed by the present invention is an LED module installed within an external housing body to control light emission in green or red, which is illuminated in conjunction with a pedestrian signal light in a ground pedestrian signal light embedded at the boundary between the roadway and the sidewalk of a crosswalk. It comprises: an LED element installed to emit green or red light by arranging a plurality of pairs of green LEDs and red LEDs at intervals from each other; and a single PCB board having a bending slope portion formed by bending upwardly inclined so that the light source of the LED element is directed toward the sidewalk, wherein the LED element is mounted on the upper surface and circuit-connected wiring is provided, corresponding to each pair of LED elements composed of the green LED and the red LED.

[0026] In addition, the single PCB substrate may further include a reflector extension formed by extending upward in a curved shape at the end of the bending slope portion to block roadway intrusion light and simultaneously reflect the light source of the LED element toward the sidewalk.

[0028] In addition, the single PCB substrate may also be configured to further include a heat dissipation means formed to extend outwardly from the side end of the bending slope portion to dissipate heat.

[0030] The above single PCB substrate is configured with a ventilation expansion hole that penetrates to expand the surrounding air-permeable area corresponding to the bending slope portion. Effects of the invention

[0032] According to the PCB bending single-type LED module for floor pedestrian traffic lights of the present invention, since a pair of LED elements combined with green and red LEDs are configured to be bent at a single inclination on an integrated single PCB board, it is possible to prevent light intrusion into the roadway while improving uniformity and light quality, and to achieve the effect of improving process productivity through the connection connector and single harness processing using a single-structure PCB board.

[0034] In addition, the PCB bending single-type LED module for floor pedestrian traffic lights according to the present invention comprises a reflector extension portion that extends upward in a curved shape from the bending slope portion on a single PCB substrate, thereby more efficiently blocking roadway intrusion light and simultaneously reflecting the light source of the LED element toward the sidewalk, which has the effect of further improving uniformity and light quality.

[0036] In addition, the PCB bending single-type LED module for floor pedestrian traffic lights according to the present invention is configured to dissipate heat at each bending slope of the single PCB board, thereby enhancing LED heat dissipation efficiency and extending the product's lifespan while continuously maintaining the performance of the LED module, and has the effect of further improving product productivity and quality. Brief explanation of the drawing

[0038] FIG. 1 is a perspective view schematically showing a floor pedestrian signal light to which an embodiment according to the present invention is applied. FIG. 2 is a perspective view showing an embodiment according to the present invention. FIG. 3 is a side cross-sectional view showing an embodiment according to the present invention. FIG. 4 is a plan view showing another embodiment according to the present invention. FIG. 5 is an enlarged side cross-sectional view showing another embodiment according to the present invention. FIG. 6 is a plan view showing another embodiment according to the present invention. FIG. 7 is an enlarged side cross-sectional view showing another embodiment according to the present invention. FIG. 8 is an enlarged cross-sectional view showing another embodiment according to the present invention. Specific details for implementing the invention

[0039] The present invention features a single-type LED module for a floor pedestrian signal light, which is installed embedded at the boundary between the roadway and the sidewalk of a crosswalk and is controlled to emit light in green or red by installing it within an external housing body, in conjunction with the crosswalk signal light. The LED module comprises: an LED element in which a plurality of pairs of green LEDs and red LEDs are arranged spaced apart from each other to enable light emission in green or red; and a single PCB board in which the LED elements are mounted on an upper surface and circuit-connected, and which has a bending slope portion formed by being bent upwardly inclined so that the light source of the LED elements is directed toward the sidewalk side, with each pair of LED elements corresponding to the green LED and the red LED being mounted.

[0041] Next, a preferred embodiment of a PCB bending single-type LED module for a floor pedestrian signal light according to the present invention will be described in detail with reference to the drawings.

[0043] First, an embodiment of a single-type LED module for PCB bending for a floor pedestrian signal light according to the present invention is shown in FIG. 1. In a floor pedestrian signal light (10) that is installed embedded in the boundary surface between the roadway and the sidewalk of a crosswalk and is illuminated in conjunction with a crosswalk signal light, and is installed inside an external housing body (11) to control light emission in green or red, the LED module (100) comprises an LED element (110) and a single PCB board (120).

[0045] Typically, when examining the basic structure of a floor pedestrian signal light (10) in which an LED module (100) is mounted, a housing body (11) is configured with a detachable cover on the outside, and the cover of the housing body (11) is provided with a pattern that reflects light while preventing moisture from entering the LED module (100). Although not shown in the drawing, the upper part of the LED module (100) inside the housing body (11) is configured to be provided with a diffusion member capable of scattering a light source and a light guide plate capable of dispersing light. At this time, the installation of a connection connector and harness processing for electrical connection to the LED module (100) are essential.

[0047] As shown in FIG. 2, the above LED element (110) is configured to light up to generate a green or red light source, and is configured by arranging and installing a green LED (110a) and a red LED (110b) on the single PCB board (120).

[0049] The above LED elements (110) are configured such that the green LED (110a) and the red LED (110b) form a pair, and a plurality of the above LED elements (110) are regularly arranged with spacing between them on the single PCB substrate (120).

[0051] The above single PCB board (120) arranges a plurality of the above LED elements (110) on its upper surface and performs the function of mounting the LED elements (110) and connecting them circuitously.

[0053] As shown in FIGS. 2 and 3, the single PCB board (120) is configured to have a plurality of bending slopes (121). That is, the bending slopes (121) are configured such that a pair of LED elements (110) combined with the green LED (110a) and the red LED (110b) are mounted on the single PCB board (120), and a plurality of bending slopes (121) are configured such that each corresponding LED element (110) can be mounted. Thus, it is possible to prevent contact of roadway intrusion light for each LED element (110) on a single PCB board (120).

[0055] The above bending slope portion (121) is formed by bending upwardly so that the light source of the LED element (110) faces the sidewalk, while extending in a straight direction.

[0057] The inclination of the above bending slope portion (121) is formed to have an inclination angle (α) of 10° based on the single PCB substrate (120).

[0059] A ventilation hole (123) is formed through the single PCB substrate (120) corresponding to the bending slope portion (121).

[0061] That is, according to the PCB bending single-type LED module for a floor pedestrian signal light according to the present invention configured as described above, since a pair of LED elements (110) combined with green and red LEDs are configured to be bent at a single incline on an integrated single PCB board (120), it is possible to prevent light intrusion into the roadway, improve uniformity and light quality, and improve process productivity through a connection connector and single harness processing using a single-structure PCB board.

[0063] And another embodiment of the PCB bending single-type LED module for a floor pedestrian signal light according to the present invention is formed by further including a reflector extension part (125) that is formed to extend upward in a curved shape at the end of the bending slope part (121) to block roadway intrusion light and reflect the light source of the LED element (110) toward the sidewalk side, as shown in FIGS. 4 and 5.

[0065] As shown in FIG. 5, the above reflector extension (125) is a structure formed by bending in a complex manner continuously on the bending slope (121), and is formed to be extended higher than the height of the LED element (110) installed on the bending slope (121), thereby further reducing roadway intrusion light.

[0067] Although not shown in the drawing, it is desirable to form a reflective layer on the surface of the reflector extension (125) so that the light source of the LED element (110) can be concentrated toward the sidewalk, which can further improve uniformity and light quality.

[0069] That is, by configuring the present invention as in the other embodiment described above, a reflector extension part (125) that extends upward in a curved shape from the bending slope part (121) on a single PCB substrate (120) is configured, thereby more efficiently blocking roadway intrusion light and at the same time reflecting the light source of the LED element (110) toward the sidewalk, thereby further improving uniformity and light quality.

[0071] In the other embodiments described above, since it is possible to implement them with the same configuration as the first embodiment described above, except for the configuration described above, a detailed description is omitted.

[0073] And another embodiment of the PCB bending single-type LED module for a floor pedestrian signal light according to the present invention is formed by further including a heat dissipation means (127) that extends outwardly from the side end of the bending inclined portion (121) to dissipate heat, as shown in FIGS. 6 to 8.

[0075] As shown in FIGS. 7 and 8, the heat dissipation means (127) is formed in a wing shape and is formed to extend downwardly in a curved manner on both sides of the bending slope portion (121).

[0077] In the above single PCB board (120), a ventilation expansion hole (128) is formed to expand the surrounding air-permeable area corresponding to the bending slope portion (121), thereby enabling improved heat dissipation efficiency.

[0079] That is, if the present invention is configured as in the other embodiment described above, heat can be dissipated at each bending slope portion (121) of the single PCB substrate (120), thereby increasing the LED heat dissipation efficiency and extending the product's lifespan while continuously maintaining the performance of the LED module, and further improving the product's productivity and quality.

[0081] In the other embodiment described above, since it is possible to implement it with the same configuration as the first embodiment and other embodiments described above, except for the configuration described above, a detailed description is omitted.

[0083] Although a preferred embodiment of a PCB bending single-type LED module for a floor pedestrian signal light according to the present invention has been described above, the present invention is not limited thereto and can be implemented with various modifications within the scope of the claims, the specification of the invention, and the attached drawings, and such modifications also fall within the scope of the present invention. Explanation of the symbols

[0085] 10 : Floor pedestrian signal light 11 : Housing body 100 : LED module 110 : LED element 110a: Green LED 110b: Red LED 120 : Single PCB board 121 : Bending slope section 123 : Vent 125 : Reflector extension 127 : Heat dissipation means 128 : Ventilation expansion port α: Slope angle of the bending section

Claims

Claim 1 A single-type LED module for a floor pedestrian signal light, which is installed embedded in the boundary between the roadway and the sidewalk of a crosswalk and is controlled to light up in conjunction with the crosswalk signal light and is installed within an external housing body to control light emission in green or red, comprising: an LED element in which a plurality of pairs of green LEDs and red LEDs are arranged spaced apart from each other to enable light emission in green or red; and a single PCB board in which the LED elements are mounted on an upper surface and circuit-connected, and which has a bending slope portion formed by bending upwardly inclined so that the light source of the LED elements is directed toward the sidewalk side, with each pair of LED elements combined with the green LED and the red LED mounted respectively. The single PCB board comprises a reflector extension portion formed by extending upwardly in a curved shape at the end of the bending slope portion to block roadway intrusion light and simultaneously reflect the light source of the LED elements toward the sidewalk side, and a heat dissipation means formed by extending outwardly at the side end of the bending slope portion to dissipate heat. Claim 2 delete Claim 3 delete Claim 4 A single-type LED module for PCB bending of a floor pedestrian signal light according to claim 1, wherein the single PCB substrate comprises a ventilation expansion hole formed through the single PCB substrate to expand the surrounding ventilation area corresponding to the bending slope.

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