KR102303352B1 - Reclamation Type Signal Lamp - Google Patents

Abstract

The present invention provides an embedded signal lamp, which can be embedded in the road surface in the crosswalk waiting line device to emit pedestrian signal light, thereby securing visibility for walking in the crosswalk at night and efficiently transmitting pedestrian signals for pedestrians. The embedded signal lamp comprises: an LED lighting unit including a PCB having thereon an LED module mounting space, and a plurality of LED modules arranged on the PCB and installed in the LED module mounting space of the PCB; a lower housing including a substrate supporting unit for supporting a lower part of the LED lighting unit, and supported and fixed to the lower surface of the PCB of the LED lighting unit in a surface contact state, and a heat dissipation wing unit extending downward from the outer periphery of the substrate support unit; and an upper housing having an inner area for accommodating the LED lighting unit and the lower housing, having a fitting end connected to the heat dissipation wing unit of the lower housing, and having, in the inner area, a plurality of distribution grooves formed to be inwardly concave to correspond to the LED modules of the LED lighting unit so that light from the LED modules can be dispersed and emitted.

Description

Floor Recessed Pedestrian Signal Lamp {Reclamation Type Signal Lamp}

The present invention relates to a floor-embedded pedestrian signal light, and more particularly, by embedding the pedestrian signal on the floor road surface on the crosswalk waiting line to light and drive, secure the view for walking in the crosswalk at night and at the same time, the pedestrian crossing signal It relates to a floor-mounted pedestrian traffic light capable of efficiently transmitting

In general, a road consists of a road for vehicle passage and a sidewalk for the passage of people, and crosswalks are installed in each part of the road for the purpose of allowing pedestrians to safely cross the road.

For the safe movement of pedestrians in these crosswalks, traffic lights indicating walking and stopping are installed on both sides of the waiting line in an upright state at a certain height from the floor through posts.

As such, the traffic lights installed at the crosswalk are installed at the pedestrian's eye level, but the signal can only be checked when the pedestrian has their head raised. In other words, there was a problem that it was difficult to check the signal of the crosswalk when the pedestrian bowed his head and used a mobile phone.

Accordingly, there is a continuous demand for technology development for a floor-type traffic light that is controlled in conjunction with a crosswalk traffic light on a sidewalk near a crosswalk or the floor surface of a crosswalk.

As a prior art disclosed in relation to the floor-type traffic light as described above, Korean Patent Registration No. 1852068 (April 19, 2018) discloses a rectangular light-emitting case through which light is transmitted through the upper surface and both sides and the lower end are opened; an LED lighting board inserted into the upper part of the light emitting case and irradiating light to the upper part of the light emitting case; a board support block inserted into the lower portion of the LED lighting board inside the light emitting case to support the LED lighting board; a buffer member installed between the substrate support block and the base block inside the light emitting case to prevent the light emitting case and the LED lighting substrate from being damaged by a vertical load applied from the top of the light emitting case; a base block inserted into the lower part of the light emitting case and landing on the bottom to support the light emitting case; It is charged between the inner top of the light emitting case and the upper end of the LED lighting board and between the lower end of the LED lighting board and the top of the board support block to integrally combine the light emitting case, the LED lighting board, and the board support block, and moisture to the LED lighting board As it is composed of epoxy to prevent penetration, a floor traffic light controlled in conjunction with a crosswalk traffic light that a pedestrian who does not see a crosswalk traffic light with their head down can easily check a crosswalk signal or a stop signal is known.

However, in the prior art described above, the perimeter of the substrate is filled with epoxy to form a structure with relatively good waterproofness, but repair or replacement is difficult when the substrate is broken. There was a problem that

In addition, in the prior art, there is a problem that the occurrence rate of malfunction or failure of the product is high because there is no discharge function for the heat and moisture generated inside. As a result, there was a problem in that the driving stability of the product was very low, such as frequent failures.

KR Registered Patent Publication No. 10-1852068 (2018.04.19.)

The present invention is to solve the above problems, by lighting the walking signal on the floor of the crosswalk waiting line, but by assembling the upper housing of the product integrally with the lower housing, and discharging the heat and moisture in the product while reducing the radiant heat flowing in from the outside Provided is a floor-mounted pedestrian traffic light that can be easily replaced and repaired for internal lighting components because it is configured to be reflective, and that can increase the waterproofness and durability of the product, and prevent a sudden change in internal temperature to increase the driving stability of the product. There is this.

The floor-embedded pedestrian traffic light proposed by the present invention includes a PCB substrate forming an LED module mounting space on the upper portion, and a plurality of LED modules arranged in an arrangement on the PCB substrate and installed in the mounting space of the PCB substrate. Wow; It supports the lower part of the LED lighting unit, and includes a substrate support part for supporting and fixing the LED lighting part in a surface contact state on the lower surface of the PCB board, and a heat dissipation wing part extending downward around the outer periphery of the substrate support part. a lower housing; Forming an inner region for receiving and receiving the LED lighting unit and the substrate support portion of the lower housing, and having a fitting end connected to and coupled to the heat dissipation wing of the lower housing, corresponding to the LED module of the LED lighting unit in the inner region A floor-embedded walking traffic light comprising a; an upper housing which forms a plurality of dispersion grooves for dispersively illuminating the light source of the LED module while being concave inwardly as a means of solving the problem.

The mounting space of the PCB board has an outer circumferential surface that is concave inwardly with respect to the LED module and includes a curved reflector that reflects the light source of the LED module as a means of solving the problem.

The upper surface of the PCB substrate except for the curved reflector and the curved reflector has a metal reflector laminated to reflect and diffuse the lighting of the LED module as a means of solving the problem.

The metal reflector is made of a silver-deposited surface as a means of solving the problem.

As a means of solving the problem, an insulating adhesive layer is laminated between the lower surface of the PCB substrate and the upper surface of the substrate support in the substrate support for supporting and fixing the PCB in a surface-contact state on the lower surface of the PCB.

A thermoelectric element is attached to the lower surface of the substrate support so that the heat emitted from the LED module is converted into a thermal current to radiate heat, and the generated thermal current is charged to a charger to use power.

A method for solving the problem is that a heat dissipation adhesive layer is laminated between the lower surface of the substrate support and the thermoelectric element.

As a means of solving the problem, the upper housing includes a pattern protrusion formed to protrude from the outer upper surface and arranged along the periphery.

The lower inner surface of the upper housing faces the PCB substrate of the LED lighting unit and further comprises a light guide plate for uniformly distributing the light source of the LED module over the entire area.

According to the floor-embedded pedestrian traffic light according to the present invention, an integrated assembly structure of the upper and lower housings is formed to achieve excellent waterproofness, and the heat of the LED lighting is radiated in real time to improve the stability and durability of the product against temperature changes, as well as It reflects the incoming radiant heat to prevent a sudden increase in internal temperature while improving the driving stability of the product, and by embossing the upper exposed surface, it is possible to secure the driver's view and at the same time increase the recognition efficiency of the crosswalk and prevent pedestrian safety accidents in advance. get a possible effect.

1 is a perspective view showing an embodiment according to the present invention.
2 is a cross-sectional view showing an embodiment according to the present invention.
3 is a partial cross-sectional view "A" of FIG.
4 is an enlarged cross-sectional view showing another embodiment of the lower housing in one embodiment according to the present invention.
Figure 5 is a bottom view showing the upper housing in one embodiment according to the present invention.
6 is a cross-sectional view showing another embodiment of the upper housing in one embodiment according to the present invention.

The present invention comprises: an LED lighting unit comprising: a PCB substrate forming an LED module mounting space thereon; It supports the lower part of the LED lighting unit, and includes a substrate support part for supporting and fixing the LED lighting part in a surface contact state on the lower surface of the PCB board, and a heat dissipation wing part extending downward around the outer periphery of the substrate support part. a lower housing; Forming an inner region for receiving and receiving the LED lighting unit and the substrate support portion of the lower housing, and having a fitting end connected to and coupled to the heat dissipation wing of the lower housing, corresponding to the LED module of the LED lighting unit in the inner region A feature of the technical configuration of a floor-embedded walking traffic light comprising; an upper housing forming a plurality of dispersion grooves for dispersively illuminating the light source of the LED module while being concave inwardly.

Next, a preferred embodiment of the floor-embedded walking traffic light according to the present invention will be described in detail with reference to the drawings.

First, as shown in FIGS. 1 and 2 , an embodiment of the floor-embedded walking traffic light according to the present invention includes an LED lighting unit 10 , a lower housing 20 , and an upper housing 30 .

As shown in FIGS. 2 and 3, the LED lighting unit 10 has a structure that can be lit and driven so as to irradiate light according to a driving control signal transmitted from the outside, and includes a PCB substrate 11 and an LED module 15. make up

The LED lighting unit 10 is installed inside the lower housing 20 and the upper housing 30 .

The PCB substrate 11 is formed in a plate shape, and receives an electrical signal to drive the LED module 15 to emit light.

A plurality of mounting spaces 12 having a concave shape are formed on the PCB substrate 11 to form an area illuminable by the LED module 15 .

In the mounting space 12 of the PCB substrate 11, a curved surface reflecting portion 13 that forms a curved surface concave inwardly with the LED module 15 on the wall and reflects the lighting light source of the LED module 15 in front. Thus, it is possible to greatly increase the luminous efficiency of light for each LED module 15 .

The LED modules 15 are arranged on the PCB substrate 11 and installed in the mounting space 12 of the PCB substrate 11 so that a plurality of them are provided on one PCB substrate 11 .

The LED module 15 is configured to achieve stable driving by applying a chip-type LED device.

In addition, in the LED lighting unit 10, the upper surface of the PCB substrate excluding the curved reflection unit 13 and the curved reflection unit is provided with a metal reflector 17 to reflect and diffuse the lighting of the LED module, so that the LED Maximize reflection of light.

The metal reflector 17 may be formed using aluminum among metal materials, or may be formed of a silver-deposited surface.

In this case, the silver deposition surface is formed in the form of a non-pattern thin film by a physical or chemical reaction by evenly depositing nanoparticles on the surface.

Here, in particular, the PCB substrate 11 constituting the LED lighting unit 10 should be formed to have an inclination angle inclined at a certain angle toward the pedestrian so as to be easily recognized by the pedestrian's sight.

The lower housing 20 supports the lower portion of the LED lighting unit 10 to perform a function of emitting heat generated from the LED lighting unit 10 while fixing the mounting in the upper housing 30 .

The lower housing 20 extends downward around the outer periphery of the LED lighting unit 10 and the substrate supporting unit 21 for supporting and fixing to the lower surface of the PCB substrate 11 in a surface contact state, and the substrate supporting unit 21 . It is configured to include a heat dissipation wing portion 25 to form.

The lower housing 20 is configured to perform an effective heat dissipation function by using a metal material but using aluminum having excellent thermal conductivity.

The heat dissipation wing portion 25 is formed to extend downwardly toward the outside in the form of wings on the outside to form a heat dissipation path.

The heat dissipation wing portion 25 has a stepped structure facing outward and is formed to include a coupling end 26 for mounting and supporting the upper housing 30 .

In addition, the lower housing 20 is insulated between the lower surface of the PCB substrate 11 and the upper surface of the substrate support unit 21 in the substrate support unit 21 that is supported and fixed to the lower surface of the PCB substrate 11 in a surface contact state. It is preferable that the adhesive layer 22 is laminated|stacked.

In addition, as shown in FIG. 4 , on the lower surface of the substrate support 21 , the heat emitted from the LED module is converted into a thermal current to dissipate heat, and at the same time, the generated thermal current is charged in a charger to use a thermoelectric element so that power can be used. (28) may be attached. In this case, a heat dissipation adhesive layer 24 may be laminated between the lower surface of the substrate support 21 and the thermoelectric element 28 .

In the above description, the thermoelectric element 28 is a structure that causes a thermoelectric phenomenon, and refers to a semiconductor element that converts thermal energy and electric energy. That is, it is made by applying the Peltier effect of a device using the Seebeck effect used when measuring temperature and a Peltier device used for manufacturing a refrigerator or thermostat as a device using various effects that appear due to the interaction of heat and electricity.

Here, the Seebeck effect is a phenomenon in which an electromotive force is generated due to a temperature difference between two different metal junctions. More specifically, it refers to a phenomenon in which a current is generated in the metal circuit when two types of metal are connected in a ring shape, one junction is heated to high and the other is to low temperature.

In addition, the Peltier effect uses a phenomenon in which the temperature difference continues at both ends of several layers of conductive material, and when the high temperature part on the opposite side that requires low temperature cooling is forcibly cooled, the heat of the low temperature part is transferred to the high temperature side.

Here, the insulating adhesive layer 22 and the heat dissipating adhesive layer 24 are thixotropic and use a thermally conductive epoxy adhesive that does not flow down or sag at high temperatures.

On the other hand, the upper housing 30 performs a function of projecting the light source of the LED lighting unit 10 to the outside while constraining and accommodating the LED lighting unit 10 .

The upper housing 30 forms an inner region 31 for receiving and accommodating the LED lighting unit 10 and the substrate support unit 21 of the lower housing 20 .

The inner region 31 of the upper housing 30 is provided with a fixing protrusion member 36 which is fixedly protruding in contact with the LED lighting unit 10 by pressing.

A fitting end 32 is provided on the heat dissipation wing portion 25 of the lower housing 20 to connect and couple. That is, the fitting end 32 of the upper housing 30 is connected to the coupling end 26 of the heat dissipation wing portion 25 of the lower housing 20 to form a detachable integral housing. .

A sealing member 37 for waterproofing and dustproofing is provided at the fitting end 32 of the upper housing 30 in contact with the lower housing 20 .

The upper housing 30 is configured to promote light transmittance and strength, heat resistance, and impact resistance according to excellent transparency by using a polycarbonate material.

As shown in FIGS. 2 and 5, the upper housing 30 has a distribution groove 33 concave inwardly corresponding to the LED module 15 of the LED lighting unit 10 in the inner region 31. to form

A plurality of the distribution grooves 33 are provided to correspond to each of the LED modules 15 .

The dispersion groove 33 forms an inclined surface 33a whose sidewall is inclined upward in the inward direction, and forms a convex surface 33b convex downwardly at the upper portion corresponding to the LED lighting unit 10 .

If the dispersion groove 33 having the inclined surface 33a and the convex surface 33b is configured as described above, it is possible to disperse the light source of the LED having straightness in the lateral direction.

In addition, since the upper housing 30 has pattern protrusions 35 protruding from the outer upper surface and embossed along the periphery to form an arrangement, it is possible to prevent slipping of the surface and secure the driver's view.

In addition, as shown in FIG. 6, the lower inner surface of the upper housing 30 faces the PCB substrate of the LED lighting unit and further includes a light guide plate 39 for uniformly distributing the light source of the LED module over the entire area. can be done

The light guide plate 39 is formed in a plank shape using a translucent plastic or acrylic resin having high light transmittance as a material, and a reflective layer is formed by coating a reflective paint on one surface or bonding a reflective sheet.

When the light guide plate 39 is configured as described above, the light source of the LED module 15 is scattered and the light is uniformly transmitted, so that it is possible to achieve a lighting signal as a surface light output.

That is, according to the floor-embedded pedestrian traffic light according to the present invention configured as described above, an integrated assembly structure of the upper and lower housings is formed to achieve excellent waterproofness, and the heat of the LED lighting is radiated in real time to improve the stability of the product against temperature changes and It not only improves durability, but also reflects radiant heat from the outside to prevent rapid internal temperature rise and improves driving stability of the product. It is possible to prevent pedestrian accidents in advance.

In the above, a preferred embodiment of the floor-embedded walking signal according to the present invention has been described, but the present invention is not limited thereto, and various modifications can be made within the scope of the claims, the specification of the invention, and the accompanying drawings. and also fall within the scope of the present invention.

10: LED lighting unit 11: PCB board
12: mounting space 13: curved reflector
15: LED module 17: metal reflector
20: lower housing 21: substrate support part
22: insulating adhesive layer 24: heat dissipating adhesive layer
25: heat dissipation wing 26: coupling end
28: thermoelectric element 30: upper housing
31: inner area 32: fitting end
33: dispersion groove 35: pattern protrusion
36: fixing protrusion member 37: sealing member
39: light guide plate

Claims (10)

An LED lighting unit comprising: a PCB substrate forming an LED module mounting space on the upper portion;
It supports the lower part of the LED lighting part, and includes a substrate support part for supporting and fixing the lower surface of the PCB board in a surface contact state among the LED lighting part, and a heat dissipation wing part extending downward around the outer periphery of the substrate support part. a lower housing;
The LED lighting unit and the inner region for receiving the substrate support portion of the lower housing are formed, and a fitting end connected to and coupled to the heat dissipation wing portion of the lower housing is provided, corresponding to the LED module of the LED lighting unit in the inner region. and an upper housing forming a plurality of dispersion grooves for dispersively illuminating the light source of the LED module while being concave inwardly.
A thermoelectric element is attached to the lower surface of the substrate support so that heat emitted from the LED module is converted into thermal current to radiate heat, and at the same time, the generated thermal current is charged to a charger to use power, and between the lower surface of the substrate support and the thermoelectric element A floor-mounted pedestrian traffic light made of laminated heat-dissipating adhesive layers.
The method according to claim 1,
The LED module is a floor-embedded pedestrian traffic light made of a chip-type LED element.
The method according to claim 1,
The mounting space of the PCB substrate has a curved surface concave inwardly on an outer circumferential surface of the LED module and includes a curved reflector for reflecting the light source of the LED module.
4. The method according to claim 3,
The upper surface of the PCB substrate excluding the curved reflector and the curved reflector is a floor-embedded pedestrian signal light in which a metal reflector is laminated to reflect and diffuse the lighting of the LED module.
5. The method according to claim 4,
The metal reflector is a floor-embedded pedestrian traffic light made of a silver-deposited surface.
The method according to claim 1,
A floor-embedded pedestrian traffic light formed by stacking an insulating adhesive layer between the lower surface of the PCB substrate and the upper surface of the substrate support in the substrate support that is supported and fixed to the lower surface of the PCB substrate in a surface contact state.
delete delete The method according to claim 1,
The upper housing, the floor-embedded pedestrian traffic light formed to protrude from the outer upper surface and to include a pattern protrusion arranged along the outer periphery.
10. The method according to any one of claims 1 to 6, 9,
A floor-embedded pedestrian traffic light further comprising a light guide plate on the lower inner surface of the upper housing that faces the PCB substrate of the LED lighting unit and uniformly distributes the light source of the LED module over the entire area.

Images