KR102100443B1 - A reclamation type signal lamp of the ground - Google Patents

Abstract

The present invention relates to an auxiliary device for a ground pedestrian signal lamp, capable of appropriately maintaining a temperature of a PCB substrate. The auxiliary device for the ground pedestrian signal lamp includes: a PCB substrate on which a plurality of LED chips are integrated to emit light upward; a support member located under the PCB substrate to support the PCB substrate; a heat dissipation plate stacked on an upper portion of the PCB substrate to receive heat emitted from the PCB substrate, and having a plurality of through-holes to expose the LED chips to the outside, respectively; a heat dissipation frame configured to support the PCB substrate together with the support member, and configured to receive the heat emitted from the heat dissipation plate to emit the heat to a ground; at least one heat dissipation pin passing through the heat dissipation plate and the heat dissipation frame to transfer the heat of the heat dissipation plate to the heat dissipation frame; a heat dissipation device for absorbing and emitting the heat generated from the PCB substrate; and a molding for integrally coupling the PCB substrate, the support member, the heat dissipation plate, and heat dissipation frame to each other.

Description

A walking lamp signal auxiliary device {A reclamation type signal lamp of the ground}

The present invention relates to a floor-type walking signal light auxiliary device, and more specifically, heat dissipated from a PCB substrate on which an LED chip is integrated is primarily radiated through a heat sink, heat sink fins, and a heat radiating frame, despite the primary heat dissipation. And when the temperature of the PCB board rises to a certain temperature, it is possible to properly maintain the temperature of the PCB board by dissipating heat of the PCB board through the heat dissipation means, so that overheating generated in the auxiliary device of the conventional floor-type walking signal light Prevents damage and breakage of electrical equipment, which can significantly extend the service life of the product, as well as frequent repairs that do not require replacement. It is about.

In general, a pedestrian crossing allows a vehicle to safely cross a road, and it is mainly provided at a crossroads of a road or other road crossers.

In this crosswalk, it is common that a crosswalk traffic light is installed to periodically display a stop signal and a crossover signal, and the crosswalk traffic light is installed at a constant height from the floor surface through a prop.

The pedestrian crossing traffic lights are installed according to the level of the pedestrian's eyes, but since it is possible to check the signal only by raising the head, for example, a pedestrian using a mobile phone with his head down frequently does not recognize the change of the signal quickly. In the case of pedestrians, accidents that collide with a vehicle frequently occur while crossing in a hurry after noticing a crossing signal or lately recognizing a crossing signal.

In order to solve the above-mentioned problems, recently, a pedestrian walking on the head of the pedestrian crossing the floor by crossing the traffic signal with a pedestrian crossing signal is interlocked with the pedestrian crossing signal light, so that the signal change of the traffic light is clearly and quickly recognized.

Conventional floor-type pedestrian traffic light auxiliary devices do not smoothly dissipate the heat emitted from the LED chip emitting inside, so that the internal electrical devices are easily overheated, and this overheating leads to damage and breakage of the electrical equipment, thereby using the product. In addition to shortening the lifespan, frequent repairs or replacements are required, which makes operation management of the product very inconvenient and difficult to use realistically.

In addition, the conventional floor-type pedestrian traffic light auxiliary device is embedded in the sloping ground at both ends of the crosswalk, so pedestrians waiting for the traffic light are difficult to easily identify the floor-type pedestrian traffic light auxiliary device. On the contrary, the driver of the vehicle did not faithfully perform the function of the vehicle, and on the contrary, the driver of the floor-type walking signal light was easily identified, and thus, there was a problem that the driving signal was viewed by the driver and the opposite signal light of the floor-type walking signal light assistance device interfered with safe driving. .

The present invention has been proposed to solve the above-mentioned problems, the purpose of which is that the heat dissipated from the PCB substrate on which the LED chip is integrated is primarily radiated through the heat sink, heat sink fins and heat sink frame, and the primary heat Despite the release, if the temperature of the PCB board rises to a certain temperature, the temperature of the PCB board can be properly maintained by dissipating the heat of the PCB board through the heat dissipation means. Prevents damage and breakage of electrical equipment due to overheating, which can significantly extend the service life of the product, and frequent repairs do not require replacement, so floor-type walking can lead to very convenient operation and management of the product. In providing a traffic light auxiliary device.

In addition, by inclining the upper portion of the support member supporting the PCB substrate to induce the PCB substrate to be inclined at a predetermined angle, pedestrians waiting for the traffic light can easily identify the light emitted from the PCB substrate and effectively observe the walking signal. At the same time, it is difficult for the driver to discern the light emitted from the PCB substrate, thereby providing a floor-type walking signal light auxiliary device that can induce safe driving.

A floor-type walking signal light auxiliary device according to the present invention for achieving the above object is a plurality of LED chips are integrated on the PCB substrate for irradiating light upward; And, the PCB substrate is located on the lower portion of the PCB substrate Support member of the insulator for supporting; And, by being stacked on top of the PCB substrate to conduct heat dissipated from the PCB substrate, a plurality of through-holes are formed so that the LED chip penetrates therethrough to be exposed to the outside A heat sink which is located at a lower portion of the support member and supports the PCB substrate together with the support member, a heat radiating frame that conducts heat from the heat sink and discharges it to the ground; and penetrates through the heat sink and the heat radiating frame At least one heat sink fin formed to transfer heat of the heat sink to the heat sink frame, and to absorb and release heat generated from the PCB substrate Heat dissipation means; And, the PCB substrate and the support member and the heat sink and heat dissipation frame integrally coupled, and the mold to prevent moisture from penetrating the PCB substrate; comprises a
Plates that are formed on both ends of the heat sink fins and are in wide contact with the heat sink and the surface of the heat sink frame so that the heat source is easily conducted to the heat sink fins and the conducted heat is easily conducted to the heat sink frame. It characterized in that it is configured to further include; expansion plate of the shape.

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In addition, the heat dissipation means includes a plurality of suction holes having a groove formed on an upper portion of the support member in close contact with the PCB substrate, a plurality of guide holes formed through the communication path with the suction path under the support member, and A plurality of spaces formed in communication with the guide hole on the upper portion of the heat dissipation frame, a plurality of discharge holes formed through the space portion in communication with the space portion below the heat dissipation frame, and a temperature sensor for measuring the temperature of the PCB substrate And, it characterized in that it comprises a suction fan installed in the lower portion of the discharge hole.

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In addition, the bottom surface of the space portion located at both ends of the heat dissipation frame is formed with an inclined surface inclined outward, and both ends of the heat dissipation frame are formed with a plate-shaped heat dissipation panel that extends downward and is in close contact with the ground. At one end of the space portion where the inclined surface is formed, one or more guide holes are formed to guide the heat dissipation panel, and an end of the inclined surface is provided with an inner jaw to which a safety capsule is secured, and a plurality of inner holes are fixed to the inner jaw , It is composed so that a safety capsule filled with alcohol with excellent volume expansion rate is placed inside,

When the temperature of the PCB substrate rises even when the heat dissipation means is operated, and the temperature of the heat dissipation frame increases, the volume of the alcohol filled in the safety capsule placed on the inside of the chin gradually expands, and the pressure is increased by the expansion pressure. When the safety capsule is torn or damaged, the alcohol discharged from the safety capsule flows through the inclined surface to the guide hole and flows through the heat dissipation panel to cool the temperature of the entire heat dissipation frame to cool the temperature of the PCB substrate connected to the heat dissipation frame. To prevent the rise of

As described above, according to the floor-type walking signal auxiliary device according to the present invention, the heat dissipated from the PCB substrate on which the LED chip is integrated is primarily radiated through the heat sink, heat sink fins, and heat sink frame, despite the primary heat dissipation. And when the temperature of the PCB board rises to a certain temperature, it is possible to properly maintain the temperature of the PCB board by dissipating heat of the PCB board through the heat dissipation means, so that overheating generated in the auxiliary device of the conventional floor-type walking signal light In addition, it is possible to significantly extend the service life of the product by preventing damage and breakage of the electrical equipment, and frequent repairs are not required to replace, thereby inducing very convenient operation management of the product.

In addition, by inclining the upper portion of the support member supporting the PCB substrate to induce the PCB substrate to be inclined at a predetermined angle, pedestrians waiting for the traffic light can easily identify the light emitted from the PCB substrate and effectively observe the walking signal. At the same time, it is difficult for the driver to discriminate the light emitted from the PCB substrate, thereby inducing safe operation.

1 is a perspective view of a floor-type walking signal auxiliary device according to an embodiment of the present invention
Figure 2 is a cross-sectional view AA of the floor-type walking signal auxiliary device shown in Figure 1
Figure 3 is an exploded perspective view of the floor-type walking signal auxiliary device shown in Figure 1
Figure 4 is a state diagram of the use of the floor-type walking signal auxiliary device shown in Figure 1

The floor-type walking signal auxiliary device according to the preferred embodiment of the present invention will be described in detail based on the accompanying drawings. Detailed descriptions of well-known functions and configurations that are determined to unnecessarily obscure the subject matter of the present invention will be omitted.

1 to 4 shows a floor-type walking signal light auxiliary device according to an embodiment of the present invention, Figure 1 is a perspective view of a floor-type walking signal light auxiliary device according to an embodiment of the present invention, Figure 2 is in Figure 1 Figure 3 is a cross-sectional view AA of the illustrated floor-type walking signal auxiliary device, Figure 3 is an exploded perspective view of the floor-type walking signal auxiliary device shown in Figure 1, Figure 4 is a floor-type walking signal auxiliary device shown in Figure 1 Each is shown.

As shown in the drawing, the floor-type walking signal auxiliary device 100 according to an embodiment of the present invention includes a PCB substrate 10, a support member 20, a heat sink 30, and a heat radiating frame 40 And, it includes a heat radiation fin 50, and the molding 70.

1 to 3, the PCB substrate 10 has a plurality of LED chips 11 integrated thereon to irradiate light upward.

Here, the PCB substrate 10 is elongated in a rectangular shape so that it can be elongated at the end of the crosswalk, and the LED chip 11 has a shape that is arranged in a number of left and right directions in the front, center, and rear, and is red. It is configured to selectively emit light and green light to induce light emission in conjunction with the emission color of traffic lights.

1 to 3, the support member 20 is positioned under the PCB substrate 10 as an insulator to support the PCB substrate 10.

That is, the support member 20 is made of a resin material having a predetermined elasticity and insulating properties to protect the PCB substrate 10 from external shocks, and at the same time, electricity is supplied to the surroundings even if electricity is shorted from the PCB substrate 10. It prevents the spread of electricity and prevents electrical safety accidents.

1 to 3, the heat sink 30 is stacked on top of the PCB substrate 10 to receive heat dissipated from the PCB substrate 10, and the LED chip 11 therein. ) So that a plurality of through holes 31 are formed so that they can be exposed to the outside.

Here, as shown in Figure 4b, the heat sink 30 is configured to receive the heat generated by the PCB substrate 10 and discharge it to the outside to maintain the temperature of the PCB substrate 10 appropriately, thermal conductivity Although it is made of this excellent aluminum material, it is of course not limited to these materials.

1 to 3, the heat dissipation frame 40 is located under the support member 20 to support the PCB substrate 10 together with the support member 20, the heat sink (30) The heat from the rotor is conducted and released to the ground.

Here, as shown in FIG. 4B, the heat dissipation frame 40 is inserted into a rectangular hole dug in the ground in order to embed the floor-type walk signal auxiliary device 100, and is to be installed in contact with the floor or the bottom and side of the hole. The heat radiated from the heat sink 30 through the heat sink fins 50 is discharged to the ground to effectively prevent overheating of the PCB substrate 10.

Since the heat dissipation frame 40 is buried in the ground that can be easily exposed to moisture, it is preferable that the heat dissipation frame 40 is made of an aluminum material having excellent thermal conductivity and corrosion resistance.

1 to 3, the heat dissipation fin 50 is formed of at least one or more, and is formed through the heat dissipation plate 30 and the heat dissipation frame 40 to heat the heatsink 30 to the heat dissipation frame (40).

That is, as shown in Figure 4b, the heat sink fin 50 is a medium that transfers the heat of the heat sink 30 to the heat radiating frame 40, and the heat source generated from the PCB substrate 10 is effectively the heat sink 30 ) And is induced to be discharged to the ground through the heat dissipation frame 40 to induce stable operation of the PCB substrate 10.

On the other hand, as shown in Figures 1 to 3 are formed on both ends of the heat sink fin 50, the heat sink 30 is in wide contact with the surface of the heat sink 30 and the heat sink 40, the heat sink 30 Further formed by a plate-shaped expansion plate 51 that is easily conducted to the heat dissipation fin 50 and induces the conducted heat to be easily conducted to the heat dissipation frame 40, further through the heat dissipation fin 50 An effective heat source may be induced to maximize the heat dissipation effect through the heat sink 30 and the heat sink frame 40.

1 to 3, the heat dissipation means 60 absorbs and discharges heat generated from the PCB substrate 10,

A plurality of suction paths (61) having long grooves formed on the upper portion of the support member (20) in close contact with the PCB substrate (10), and in communication with the suction path (61) under the support member (20) A plurality of guide holes 62 formed through, a plurality of space portions 63 formed in communication with the guide holes 62 on the upper portion of the heat dissipation frame 40, and the space portion of the heat dissipation frame 40 (63) a plurality of discharge holes 64 formed to communicate with the space portion 63 through the lower portion, a temperature sensor 65 for measuring the temperature of the PCB substrate 10, and the discharge holes 64 It is to be configured to include a suction fan 66 installed at the bottom of the.

That is, the floor-type walking signal auxiliary device 100 of the present invention is primarily the heat source generated from the PCB substrate 10 through the configuration of the heat sink 30, the heat sink fins 50, and the heat sink frame 40. It is discharged to, and is secondarily discharged to the outside through the heat dissipation means 60. The process is as follows.

First, as illustrated in FIG. 4B, the PCB substrate 10 includes the suction path 61 and the guide hole 62 formed in the support member 20, and the space portion 63 of the heat dissipation frame 40. Since the heat dissipation means 60 is basically in communication with the lower space of the heat dissipation frame 40 through the structure of the discharge hole 64, the heat dissipation frame 40 is basically the heat source generated in the PCB substrate 10 in the air. ) Can conduct conduction emission on the side.

Nevertheless, when the PCB substrate 10 is overheated to a certain level or more and is detected by the temperature sensor 65, as shown in FIG. 4C, the suction path 61 is operated by operating the suction fan 66. And guide holes 62, the space portion 63 and the discharge holes 64 through the passage of the hot air is sucked and discharged to induce the temperature of the PCB substrate 10 is lowered.

Then, when the temperature of the PCB substrate 10 is lowered to an appropriate level through the temperature sensor 65, the operation of the suction fan 66 is stopped to stop the heat sink 30, the heat radiating frame 40, and the heat radiating means ( The overheating of the PCB substrate 10 is prevented through the basic heat emission of 60).

1 and 2, the molding 70 integrally combines the PCB substrate 10, the support member 20, the heat sink 30 and the heat sink frame 50, and the PCB board ( 10) to prevent moisture from penetrating.

On the other hand, the upper surface of the support member 20 is formed to be inclined to induce the inclination of the PCB substrate 10 stacked on top of the support member 20.

That is, as shown in Figure 4a, the PCB substrate 10 stacked on the support member 20 is inclined to the pedestrian side waiting for the traffic light so that the pedestrian can easily identify the light emitted from the PCB substrate 10 In order to clearly recognize and keep the signal of the traffic light, the driver of the vehicle driving on the road does not recognize the light emitted from the PCB board 10, so the light of the PCB board 10 and the traffic light seen by the driver Not to be confused with the light of, it leads to safe driving.

On the other hand, as shown in Figure 2 and 3, the bottom surface of the space portion 63 located at both ends of the heat dissipation frame 40 is formed with an inclined surface 81 inclined outward, the heat dissipation frame 40 ) Is extended to the bottom of both ends of the plate-shaped heat dissipation panel 82 is in close contact with the ground is formed, the inclined surface 81 is formed at the end of the space portion 63 is guided to the heat dissipation panel 82 At least one guide hole 83 is formed, an end of the inclined surface 81, a safety capsule 85 is provided with an inner chin 84 which can be secured inside, and a large number of teeth are secured to the inner chin 84 It is configured to be placed inside the safety capsule 85 filled with alcohol having an excellent volume expansion rate,

As illustrated in FIG. 4D, even when the heat dissipation means 60 is operated, when the temperature of the heat dissipation frame 40 increases due to a rise in the temperature of the PCB substrate 10, the inside of the inside of the support jaw 84 When the volume of the alcohol filled inside the safety capsule 85 gradually expands and the safety capsule 85 is torn or damaged by the expansion pressure, the alcohol discharged from the safety capsule 85 causes the inclined surface 81 to break. Ride through the guide hole 83 and flow through the heat dissipation panel 82 to cool the temperature of the entire heat dissipation frame 40 to increase the temperature of the PCB substrate 10 connected to the heat dissipation frame 40. Try to stop.

That is, the safety capsule 65 is used as a disposable, and when the temperature of the PCB substrate 10 rises too high, the temperature rise of the PCB substrate 10 is lowered to prevent damage or damage to the electric device. Used for prevention purposes.

Here, a plurality of sharp needles, such as roughness or needle bars, can be formed on the surface of the inclined surface 81 or the inner jaw 84 so that the safety capsule 65 can be easily torn or broken while expanding. .

The floor-type walking signal auxiliary device 100 of the present invention made of the above-described components has heat dissipated from the PCB substrate 10 on which the LED chip 11 is integrated, and the heat sink 30 and the heat sink fin 50, and It is primarily discharged through the heat dissipation frame 40, and despite the primary heat dissipation, when the temperature of the PCB substrate 10 rises to a certain temperature, the PCB substrate 10 is secondary through the heat dissipation means 60. ) To properly maintain the temperature of the PCB substrate 10 in a manner that dissipates heat, preventing damage to and damage to electrical equipment caused by overheating in the conventional floor-type walking signal light auxiliary device, thereby using the product. Not only can the life span be significantly extended, but frequent repairs do not require replacement, which has the effect of inducing very convenient operation management of the product.

In addition, by inclining the upper portion of the support member 20 for supporting the PCB substrate 10 to induce the PCB substrate 10 to be inclined at a predetermined angle, pedestrians waiting for a traffic light may receive the PCB substrate 10 ), It is possible to effectively identify the light emitted from the gait signal, and at the same time, the driver has difficulty in discriminating the light emitted from the PCB substrate 10, thereby inducing safe operation.

The floor-type walking signal auxiliary device 100 according to the embodiment of the present invention having the above configuration is installed and used as follows.

First, as illustrated in FIG. 4A, the floor-type walking signal auxiliary device 100 of the present invention is used by being buried in the ground at the end of a crosswalk, and the PCB 10 is inclined due to the support member 20 Therefore, when the PCB substrate 10 emits light, a pedestrian can easily recognize it, thereby effectively complying with a signal of a pedestrian crossing.

Here, it is of course possible to install and use a transparent protective cover (not shown) to protect the product on the top of the floor-type walking signal auxiliary device 100 of the present invention.

When heat is generated from the PCB substrate 10 due to the operation of the floor-type walking signal auxiliary device 100 of the present invention as described above, as shown in FIG. 4B, the heat sink 30 and the heat radiating frame 40 and the Through the heat sink fins 50 connecting the heat sink 30 and the heat radiating frame 40, heat is quickly conducted directly and discharged to the ground to prevent overheating of the PCB substrate 10.

At this time, the air into the air through the structure of the intake path 61 and the guide hole 62 of the support member 20 of the heat dissipation means 60, the space portion 63 and the discharge hole 64 of the heat dissipation frame 40 By indirectly releasing heat of the PCB substrate 10, it effectively prevents overheating of the PCB substrate 10.

Nevertheless, as shown in Figure 4c, when the temperature of the PCB substrate 10 rises, the suction fan 66 of the heat dissipation means 60 is operated to operate the suction path 61 and the guide hole 62. The hot air is sucked and discharged through the passages of the space portion 63 and the discharge hole 64 to induce the temperature of the PCB substrate 10 to decrease.

Nevertheless, as shown in FIG. 4D, when the temperature of the PCB substrate 10 rises and the heat dissipation frame 40 is heated, the safety capsule enclosed in the inside of the heat dissipation frame 40 is placed (84). When the material (alcohol) filled in 85 expands by conducting heat and expands, and the safety capsule 85 is torn at the expansion pressure, alcohol passes through the guide hole 83 of the heat dissipation frame 40, and the heat dissipation panel 82 ) To cool the temperature of the entire heat dissipation frame 40 while flowing, so that an increase in temperature of the PCB substrate 10 connected to the heat dissipation frame 40 is prevented.

The present invention has been described with reference to the embodiments shown in the accompanying drawings, but these are illustrative and not limited to the above-described embodiments, and various modifications and equivalent embodiments are possible from those skilled in the art. You will understand the point. Further, it is needless to say that modifications can be made by those skilled in the art without detracting from the spirit of the present invention. Therefore, the scope of claiming rights in the present invention will not be defined within the scope of the detailed description, but will be limited by the scope of the claims and the technical spirit thereof.

10. PCB board 11. LED chip
20. Support member 30. Heat sink
31. Through hole 40. Heat dissipation frame
50. Heat dissipation fin 51. Expansion plate
60. Heat dissipation means 61. Suction path
62. Guideman 63. Ministry of Space
64. Outlet 65. Temperature sensor
66. Suction fan 70. Molding
81. Slope 82. Heat dissipation panel
83. Guide hole 84.
85. Safety Capsule
100. Floor-type pedestrian traffic light auxiliary device

Claims (5)

It is operated in conjunction with a traffic light of a pedestrian crossing, and in the floor-type walking signal auxiliary device that is buried and exposed on the ground at both ends of the pedestrian crossing,
A PCB substrate 10 on which a plurality of LED chips 11 are integrated and irradiating light upward;
A support member 20 of an insulator positioned under the PCB substrate 10 to support the PCB substrate 10;
Stacked on top of the PCB substrate 10 to receive heat radiated from the PCB substrate 10, a plurality of through holes 31 so that the LED chip 11 penetrates therein and is exposed to the outside. Heat sink 30 is formed;
Located in the lower portion of the support member 20 to support the PCB substrate 10 together with the support member 20, the heat dissipation frame 40 that receives heat from the heat sink 30 and discharges it to the ground ;
At least one heat dissipation fin 50 formed through the heat dissipation plate 30 and the heat dissipation frame 40 to transfer heat of the heat dissipation plate 30 to the heat dissipation frame 40;
Heat dissipation means 60 for absorbing and dissipating heat generated in the PCB substrate 10; And
Including the PCB substrate 10 and the support member 20 and the heat sink 30 and the heat dissipation frame 50 integrally, molding 70 to prevent moisture from penetrating the PCB substrate 10; Is composed,
It is formed on both ends of the heat dissipation fin 50, the heat sink 30 is in wide contact with the surface of the heat dissipation frame 40, the heat sink 30 is easily conducted to the heat dissipation fin 50, the Floor type walking signal light auxiliary device, characterized in that further comprises a; plate-shaped expansion plate 51 to induce the conduction heat to be easily conducted to the heat dissipation frame (40).
delete According to claim 1,
The heat dissipation means 60,
A plurality of suction paths (61) in which grooves are formed at an upper portion of the support member (20) in close contact with the PCB substrate (10),
A plurality of guide holes 62 formed to pass through the suction path 61 in communication with the lower portion of the support member 20,
A plurality of space portions 63 formed in communication with the guide hole 62 on the upper portion of the heat dissipation frame 40,
A plurality of discharge holes 64 formed to communicate with the space portion 63 under the space portion 63 of the heat dissipation frame 40,
A temperature sensor 65 for measuring the temperature of the PCB substrate 10,
Floor type walking signal light auxiliary device, characterized in that comprises a suction fan (66) installed at the bottom of the discharge hole (64).
delete The method of claim 3,
The bottom surface of the space portion 63 located at both ends of the upper portion of the heat dissipation frame 40 is formed with an inclined surface 81 inclined outward,
At both ends of the heat dissipation frame 40, a plate-like heat dissipation panel 82 is formed, which extends downwardly and is in close contact with the ground.
At one end of the space portion 63 on which the inclined surface 81 is formed, one or more guide holes 83 for guiding the heat dissipation panel 82 are formed.
At the end of the inclined surface 81, a safety capsule 85 is provided with an inside jaw 84 in which the inside can be fixed.
It is to be secured in a large number of enclosed in the chin jaw 84, it is configured such that a safety capsule 85 filled with alcohol having an excellent volume expansion rate is placed therein,
When the temperature of the PCB substrate 10 rises even when the heat dissipation means 60 is operated, and the temperature of the heat dissipation frame 40 is increased, the inside of the safety capsule 85 placed on the inside of the jaw 84 is filled. When the volume of the alcohol is gradually expanded, and the safety capsule 85 is torn or damaged by the expansion pressure, alcohol discharged from the safety capsule 85 rides the inclined surface 81 to the guide hole 83 Flow through the heat dissipation panel 82 while cooling the temperature of the entire heat dissipation frame 40, the bottom characterized in that the rise of the temperature of the PCB substrate 10 connected to the heat dissipation frame 40 is prevented Type walking signal light auxiliary device.

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