KR20170026756A - Street lamp head - Google Patents

Abstract

The present invention relates to a streetlight head. The main body 10 forms a skeleton and an outer appearance of the streetlight head of the present invention. The front cover 20 and the front plate 30 form part of the outer surface of the main body 10. The interior space formed by the front cover 20 and the front plate 30 includes a substrate 44 on which a light source 46 is mounted, a radiator 50, and the like. An inlet port 38 is formed to surround the edge of the front plate 30 and an outlet port 22 is formed at an upper end of the outer surface of the front cover 20. An outlet cover (24) is located above the outlet of the outlet (22) so that the outlet (22) is not directly open to the outside. An end cover 25 is provided at both ends of the upper cover 25 of the outlet cover 24 so that the outlet cover 24 is integrally formed with the front cover 20 while supporting the outlet cover 24 to the front cover 20. [ . A plurality of the discharge ports 22 are formed in a long direction in one direction. Protective fences (26) are formed at both ends of the region where the discharge port (22) is formed to prevent foreign matter from entering the discharge port (22) from the outside. A drainage channel 28 is formed between the outlet 22 and the guard fence 26 or between the outlet 22. The drainage channel (28) smoothly discharges the rainwater that has fallen on the outer surface of the front cover (20) to the outside. According to the present invention, the streetlight head can be reduced in size and weight, and the heat can be smoothly discharged to the outside.

Description

Street lamp head}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a streetlight head, and more particularly, to a streetlight head used in a streetlight that illuminates a road or the like using an LED as a light source.

Streetlights are mainly installed outdoors to illuminate the surroundings when the illuminance is low, such as night or cloudy days. There is a problem that the streetlight head is directly exposed to the outdoor environment because the streetlight is installed outdoors. For example, the influence of solar heat, sand, dust, and precipitation.

Recently, energy-efficient LEDs are widely used as light sources. In the case of LEDs, 20% of the supplied power is used for generating light and the remainder is dissipated into heat. If the heat is not discharged smoothly to the outside, There is a problem that is damaged.

For this purpose, it is generally made of aluminum die-casting or extruded structure to make a heater. However, aluminum die-casting or extruded structures are made of various alloys in order to improve workability. Due to the influence of this alloy, the heat conduction performance is reduced to about 70% compared with the heat conduction performance inherently possessed by aluminum, There is a problem of heavy weight.

In addition, a thermally conductive film material is conventionally used for bonding the substrate and the heat sink. However, since the heat conductive performance is relatively low and the fine pores are not penetrated, the heat radiation performance is poor.

In addition, the streetlight head is heated by the solar heat even during the day when the streetlight is not used, thereby damaging the light source inside the streetlight head.

Korean Patent Publication No. 10-2010-0110043 Korean Patent Publication No. 10-2010-0112831

It is an object of the present invention to solve the above-mentioned problems of the prior art, and it is an object of the present invention to provide a lighting system that can smoothly discharge heat generated from a light source through natural convection while using a cover that blocks the light source of the streetlight head from being affected by an outdoor environment And prevents foreign substances or the like from entering the inside of the streetlight head.

Another object of the present invention is to maximize the heat transfer efficiency of the heat dissipating structure while reducing the weight of the radiator.

According to an aspect of the present invention for achieving the above object, the present invention provides a body including a front cover having a curved outer surface, a front plate coupled to the front cover and disposed toward the ground, A heat sink plate to which the substrate is attached and a heat radiating fin to which a plurality of heat sink plates are installed at a predetermined interval, Air is introduced into the main body through an inlet formed in a front plate corresponding to an edge of the window and passes through the vent hole and is discharged through an outlet formed in an upper region of the front cover The air is discharged to dissipate heat, and an outlet cover is provided at a predetermined height at the outlet of the outlet So as to prevent the foreign matter from entering directly from the outside to the outlet.

The discharge ports extend in the longitudinal direction of the front cover and are arranged in parallel, and the radiating fins are installed to extend in a direction orthogonal to the longitudinal direction of the discharge port.

And a protection fence protruding from both ends of the discharge port in a region where the discharge port is formed so as to block the transfer of foreign matter to the discharge port and to guide the air guided along the outer surface of the end cover to an area where the discharge port is formed Block transmission.

A drainage channel is formed between the discharge ports or between the discharge port and the guard fence in parallel with the discharge port.

The heat sink plate and the heat radiating fin are both made of an aluminum plate, and the bonding portion of the heat radiating fin is attached to the heat sink plate as active lead, and the heat radiating portions bent at the bonding portion are adjacent to each other at predetermined intervals.

The following effects can be obtained in the streetlight head according to the present invention.

In the present invention, in order to prevent the light source from being damaged by the outdoor environment, the end cover is used to shield the ventilation opening, and the air passing through the ventilation opening is configured to be natural convection. Therefore, since the discharge port is located at the upper end of the end cover, the rain cover, sand, etc. can enter the inside of the street lamp head through the discharge port. To prevent this, the outlet cover is provided on the outlet of the discharge port. It is prevented that precipitation or sand is prevented from entering, and the performance of the streetlight head is kept constant.

In the present invention, the heat radiating plate and the radiating fin are made of an aluminum plate without using a die casting or extrusion method, and they are joined by using active lead. Accordingly, the heat conduction between the components constituting the ventilation opening becomes more smooth, and the size and weight of the ventilation opening itself are minimized, thereby making it possible to miniaturize and lighten the entire streetlight head.

In the present invention, since the controller for driving the light source also has a door plate which is used to open and close the inside and the outside of the main body so as to allow the heat to be radiated to the outside well, There is also an effect of smooth discharge.

1 is a perspective view showing a configuration of a preferred embodiment of a streetlight head according to the present invention.
2 is an exploded perspective view showing a state in which the tip cover is detached in the embodiment of the present invention.
3 is a vertical cross-sectional perspective view showing the configuration of an embodiment of the present invention.
4 is a cross-sectional perspective view showing the configuration of an embodiment of the present invention.
5 is a perspective view showing a configuration of a front plate constituting an embodiment of the present invention.
6 is an operating state view showing air convection in an embodiment of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference numerals whenever possible, even if they are shown in different drawings. In the following description of the embodiments of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the difference that the embodiments of the present invention are not conclusive.

In describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected or connected to the other component, Quot; may be "connected," "coupled," or "connected. &Quot;

As shown in the drawings, the body 10 forms an appearance and a skeleton. The main body 10 is made of an aluminum material or an insulating synthetic resin. The main body 10 is configured such that the surface facing the ground as a whole is flat and the surface facing the sky is a curved surface. The surface facing the streetlight post is plane with a plane orthogonal to the plane facing the ground.

The surface of the main body 10 facing the ground is opened and the door plate 11 is mounted. And the inside of the main body 10 is shielded from the outside by the door plate 11. [ The door plate 11 is also made of aluminum, and a controller 11 'for controlling the light source 46 will be described below. This structure allows the heat generated in the control unit 11 'to be smoothly discharged to the outside through the door plate 11. [ The door plate 11 is screwed to the main body 10. A connector 12 is formed on the surface of the streetlight facing the streetlight support so that the streetlight head can be physically and electrically connected to the streetlight support.

A sensor 14 is installed on one side of the main body 10. As the sensor 14, for example, a light intensity sensor is used. There is a partition plate 16 for partitioning the space where the control unit 11 'is installed and the space where the air outlet 50 to be described below is installed. The partition plate 16 prevents the control unit 11 'from receiving the influence of heat generated in the light source 46 or the like. A seating end 18 is formed on the outer surface of the main body 10 along the edge of the partition plate 16 to receive one side edge of the front cover 20 to be described below.

The front cover 20 constitutes a part of the outer appearance of the main body 10, and particularly shields a space in which the air outlet 50 is provided from the outside. The end cover 20 is substantially semi-elliptical in plan view, and both the cross section and the longitudinal section are substantially arcuate. The outer surface of the end cover 20 is a curved surface 20 '. The curved surface 20 'is formed to extend from the lower edge of the front cover 20 to the upper edge of the front cover 20.

A plurality of outlets 21 are formed long in the longitudinal direction of the top cover 20 at the top of the top cover 20. [ In the present embodiment, six discharge ports 21 are provided, and three discharge ports 21 are arranged side by side.

An outlet cover (24) is provided at an upper portion of the discharge port (21). The outlet cover 24 is composed of an upper plate 25 and an end leg 25 'so that the outlet of the outlet 21 is not directly visible from the front of the outlet. The upper plate 25 is located at a predetermined height from the outlet of the discharge port 21 and is connected to the end cover 20 by the end leg 25 '. The end legs 25 'are formed orthogonally to both ends of the upper plate 25 and integrated with the end cover 20. The upper plate 25 serves to prevent water, dust, and the like from entering the discharge port 21 directly.

Protective fences (26) are formed on both sides of the region where the discharge port (21) is formed. The protective fence 26 is elongated in the same direction as the extending direction of the discharge port 21. In the present embodiment, the protective fences 26 are formed in a total of four, two at one edge of the region where the discharge ports 21 are formed. The protective fence 26 serves to prevent dust or moisture from entering the discharge port 21 and to cause the airflow guided along the curved surface 21 to go up to the discharge port 21 without going to the discharge port 21. [ This is for generating a chimney effect at the outlet 21. That is, the air pressure at the discharge port 21 is lowered by the Bernoulli principle, so that the air that has passed through the ventilation opening 50 is smoothly discharged through the discharge port 21. [

A drainage channel 28 is formed between the discharge port 21 and the barrier wall 26 and between the discharge ports 21 in parallel with the discharge port 21. The drainage channel 28 flows along the drainage channel 28 and flows out along the curved surface 20 'without coming into the discharge port 21 when the drainage channel 28 is exposed to rain, for example, . The drainage channel 28 is formed longer than the outlet cover 24 or the protective fence 26. The drainage channel 28 is formed to be concave on the surface of the end cover 20 and is formed along the curved surface 20 'of the end cover 20 and has a curved surface 20 ') To deliver the precipitation.

The front plate 30 is provided in a portion of the main body 10 other than the portion where the control unit is provided. The front plate 30 is a portion seen from the ground. In this embodiment, the front plate 30 is in the form of a rectangular plate as shown in Fig. A window 32 penetrates the front plate 30. The window 32 is a rectangular penetration in this embodiment. The window (32) is formed over most of the area of the front plate (30). A partition fence 34 is formed along the edge of the window 32. The compartment fence 34 is entirely rectangular. The compartment fence 34 separates the window 32 side from the rest of the front panel 30. A seating end 36 is formed at the edge of the window 32. The seating end 36 is provided with a window member 40 to be described below.

An inlet 38 is formed in a portion of the front plate 30 corresponding to the outside of the compartment fence 34. The inlet 20 is a portion where air enters the inside of the main body 10 from the outside. The inner surface of the inlet 30 is inclined. That is, the inner surface of the inlet 30 is inclined so that the air is guided to the outlet 21 through the air outlet 50. The sum of the flow cross-sectional areas of the inlets 30 is substantially equal to the sum of the flow cross-sectional areas of the outlets 21. This is to allow natural convection from the inlet 30 to the outlet 21 to be smooth.

A window member (40) is installed in the window (32) of the front plate (30). The window member 40 allows the light emitted from the light source 46 inside to be transmitted to the outside while preventing the outside environment from affecting the inside of the window member 40.

A reflection plate 32 is provided on the inner side of the compartment fence 34. The reflector 32 allows the light emitted from the light source 30 to travel in a desired direction. The reflection plate 32 is formed with a penetrating portion (not shown), and the penetrating portion is provided on the substrate 44 on which the light source 46 is mounted. The substrate 44 is attached to a heat sink plate 52, which will be described below. Reference numeral 48 denotes a seal. The seal 48 serves to prevent the penetration of moisture.

A vent hole 50 and the light source 46 are installed in a space formed by the front plate 30 and the front cover 20. [ The discharge port (50) discharges heat generated from the light source (46) to the outside. Referring to the configuration of the discharge port 50, a heat sink plate 52 is seated on the compartment fence 34 of the front plate 30. The heat sink plate 52 is a plate made of aluminum. The substrate 44 is attached to the heat sink plate 52. The substrate 44 is bonded to the heat sink plate 52 using a graphene inorganic adhesive. The graphene inorganic adhesive has excellent heat conduction performance, and the graphene nanoparticles sufficiently penetrate the pores of the contact surface, so that the thermal resistance at the contact portion can be minimized.

A plurality of heat dissipation fins 54 are attached to the heat sink plate 52. The extension direction of the radiating fin 54 is orthogonal to the length direction of the discharge port 21. [ The radiating fins 54 are also made of aluminum, which is made of aluminum. The heat dissipating fin 54 is composed of a heat dissipating unit 55 and a bonding unit 55. The heat dissipating unit 55 is installed at a predetermined angle with respect to the heat sink plate 52, 'Is a portion attached to the heat sink plate 52 and formed to have a predetermined angle with the heat radiating portion 55. In this embodiment, the heat dissipating portion 55 is perpendicular to the adhering portion 55 '.

The bonding portion 55 'is attached to the sinker heat sink plate 52 by active lead. Briefly explaining the bonding of the heat sink plate 52 and the bonding portion 55 'using the active lead, active lead is applied between the heat sink plate 52 and the bonding portion 55' Using a bonding apparatus, in a range between 100 and 300 ° C. By doing so, the physical properties inherent to aluminum are not changed, thereby maximizing the heat conduction performance.

A plurality of the heat dissipation fins 54 are installed on the heat sink plate 52 at regular intervals, and the heat dissipation units 55 are installed at regular intervals. The heat dissipating unit 55 has a substantially rectangular plate shape, and a plurality of pin slots 56 are formed. Air flows through the pin slot 56. The height of the heat dissipating part 55 varies depending on the position, and both upper edges are rounded. This is because of the height of the ceiling of the front cover 20. [ Such a configuration is shown in Fig.

Hereinafter, the use of the streetlight head according to the present invention having the above-described structure will be described in detail.

The street light head of the present invention is installed in the street lamp post via the connector (12). A control unit installed in the main body 10 is driven by a power source through the connector 12 so that the light source 46 mounted on the substrate 44 emits light. When the light source 46 emits light, light is irradiated through the window member 40 to illuminate.

Heat is generated in the process of light emission of the light source 46. This heat is transmitted to the heat sink plate 52 to which the substrate 44 is adhered and the heat dissipation of the heat dissipation fin 54 (55). The heat transmitted to the heat dissipating unit 55 is transmitted to the air through contact with air.

On the other hand, it will be explained that air flows into the air outlet 50. When the air flows along the curved surface 20 'of the front cover 20, the direction of the airflow is suddenly changed upward in the protective fence 26, The pressure is relatively low. As a result, the air is discharged from the inside of the front cover 20 to the outlet 22. This is like the principle of a chimney. The air inside the front cover 20 is discharged through the discharge port 22 so that the outside air flows into the front cover 30 through the inlet 38 of the front plate 30. [ The air that has passed through the space between the radiating fins 54 flows through the discharge port 22 formed at the center of the ceiling of the top cover 20, And then discharged. In this process, the heat is transmitted to the air through the heat dissipating unit 55 of the heat dissipation fin 54 and the air is discharged to the outside.

The upper portion of the outlet of the outlet 22 is covered by the upper plate 25 of the outlet cover 24 so that rainwater or the like from the outside is prevented from being transmitted to the inside of the front cover 20 through the outlet 22 .

The drainage channel 28 is formed on both sides of the discharge port 22 so that the precipitation water around the discharge port 22 enters the drainage channel 28 and the drainage channel 28 has a relatively low position And is delivered to the curved surface 20 'of the front cover 20 and dropped from the edge of the front cover 20.

Meanwhile, the protective fence 26 serves to prevent dust or sand from entering the discharge port 22 in a dusty or sandy environment. That is, the protective fence 26 and the outlet cover 24 cooperate with each other to prevent the discharge port 22 from being directly exposed to the outside, so that foreign matter is discharged from the outside through the discharge port 22 into the front cover 20 Minimize entry.

The outer cover 20 may be coated with infrared rays. By doing so, the temperature rise of the air outlet 50 due to solar radiation can be suppressed. In particular, it is possible to prevent the front cover 20 from transmitting direct sunlight to the air outlet 50, thereby preventing the light source 46 from being damaged by heat due to sunlight in an area having a large amount of solar radiation during the daytime.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

10: main body 11: door plate
11 ': control unit 12: connector
14: sensor 16: partition plate
18: seat end 20: end cover
20 ': Curved surface 22: Outlet
24: outlet cover 25: top plate
25 ': End leg 26: Protective fence
28: Drain channel 30: Front plate
32: Windows 34: compartment fence
36: seat 38: inlet
40: window member 42: reflector
44: substrate 46: light source
48: Seal 50:
52: heat sink plate 54:
56: Pin slot

Claims (5)

A main body including a front cover whose outer surface is curved and a front plate which is coupled to the front cover and which is disposed toward the ground;
A substrate having a light source mounted at a position corresponding to a window of the front plate;
And a radiating hole formed in the space formed by the front cover and the front plate, wherein the radiating fin comprises a heat sink plate having the substrate mounted thereon and a plurality of heat radiating fins having a predetermined spacing therebetween,
Air is introduced into the main body through an inlet formed in the front plate corresponding to the edge of the window, and air is discharged through the outlet formed in the upper end region of the front cover,
And an outlet cover is disposed at a predetermined height at the outlet of the outlet so as to block foreign matter from entering the outlet directly from the outside.
` The lamp head according to claim 1, wherein the discharge ports extend in a longitudinal direction of the front cover and are arranged in parallel, and the radiating fins are installed to extend in a direction orthogonal to the longitudinal direction of the discharge port.
[3] The apparatus as claimed in claim 2, wherein a protection fence protrudes from both ends of the region where the discharge port is formed to prevent foreign matter from being transmitted to the discharge port, To block the guided air from being transmitted along the street.
The streetlight head according to claim 3, wherein a drainage channel is formed between the discharge ports or between the discharge port and the guard fence in parallel with the discharge port.
The heat sink according to any one of claims 1 to 4, wherein the heat sink plate and the heat radiating fin are both made of an aluminum plate, and the heat radiating fin is bonded to the heat sink plate with active lead, Wherein a predetermined distance is provided between the headlight and the headlight.

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