KR102771752B1 - Streetlight with heat dissipation structure of hybrid type electric control box - Google Patents

Abstract

The present invention relates to a streetlight having a heat dissipation structure of a hybrid type electric control box, and more particularly, to a streetlight having a heat dissipation structure of an electric control box in which the electric control box is installed on the outside of a streetlight support and outside air introduced through the lower part of the streetlight support is discharged to the upper part of the support via the electric control box, thereby enabling heat dissipation of electric components within the electric control box.
In addition, the present invention relates to a streetlight having a heat dissipation structure of an electric control box that forms a pressure difference between an air inlet and an air outlet of the electric control box to ensure a smooth flow of outside air, thereby improving the heat dissipation efficiency of electric components.

Description

{Streetlight with heat dissipation structure of hybrid type electric control box}

The present invention relates to a streetlight having a heat dissipation structure of a hybrid type electric control box, and more particularly, to a streetlight having a heat dissipation structure of a hybrid type electric control box, in which the electric control box is installed on the outside of a streetlight pole, and outside air flowing in through the lower part of the streetlight pole is discharged to the upper part of the pole via the electric control box, thereby enabling heat dissipation of electrical components and solar panels within the electric control box using an upward air current.

In addition, the present invention relates to a streetlight having a heat dissipation structure of a hybrid electric control box that forms a pressure difference according to the Bernoulli principle between the air inlet and air outlet of the electric control box to ensure a smooth flow of external air into the electric control box, thereby improving the heat dissipation efficiency of electric components.

In general, streetlights are installed on roads where people and vehicles pass, illuminating them to facilitate pedestrian and vehicle traffic at night.

Conventional street lights generally used high-pressure mercury lamps, fluorescent lamps, and sodium lamps, but these had problems such as short service life, poor impact resistance, and high power consumption. Accordingly, recently, high-brightness LEDs (Light emitting diodes) that are environmentally friendly, have excellent impact resistance, and consume less power have been used as an alternative light source.

However, LEDs inevitably generate heat in the process of converting electricity into light, and in particular, high-power, high-brightness LEDs must be installed in streetlights that require brighter illumination than general indoor lighting. In these high-power, high-brightness LEDs, the amount of electricity used increases, and accordingly, the amount of heat generated also increases.

This high temperature heat can cause thermal stress on the streetlight, which can deteriorate the characteristics of the streetlight and reduce its durability.

And when the streetlight is turned on and in use, heat is generated in the ballast, and the insulation deteriorates due to the heat, and the internal winding structure naturally becomes abnormal, which becomes a factor in preventing a stable current supply. Therefore, the ballast must be replaced with a new one after a certain period of use.

In addition, due to the subtropical climate change, the continuous heat wave causes a high temperature and humidity environment inside the streetlight, which leads to a problem where the temperature of the ballast while it is on and the external temperature rise above the recommended operating temperature, causing rapid failure.

Accordingly, conventional streetlights require a separate heat dissipation structure to cool the high heat generated from the LED or the electrical control box that accommodates the electrical components.

An LED streetlight equipped with a heat dissipation structure is disclosed in Patent Registration No. 10-1245260 and illustrated in FIGS. 1 and 2.

The lower support (120) of this streetlight is formed in a cylindrical shape and is provided with a control device (C) for controlling the LED streetlight (100) and a power storage device (B) for power storage inside. An opening/closing door (121) is provided on one side of the lower support (120) so that the inside of the lower support (120) can be opened to maintain the control device (C) and the power storage device (B).

In addition, by the operation of the ventilator (240), high temperature air inside the support (101) is discharged through the upper support (110), and relatively low temperature air from the outside is introduced into the inside of the support (101) through the vent (123) formed in the lower support (120). This circulation cools the heat of the power storage device (B) and the control device (C) inside the support (101).

However, LED streetlights equipped with the above heat dissipation structure have the following problems.

First, since the control device (C) for controlling the streetlight (100) and the power storage device (B) for power storage are installed inside the lower support (120), maintenance/inspection is cumbersome due to the narrow space.

Second, since the structure is such that a ventilator (240) is provided inside the upper support (110) to allow external air to flow in through the vent (123) to dissipate heat from the control device (C) and the power storage device (B), the structure for heat dissipation is complex.

Patent registration No. 10-1245260 (Registration date: 2013. 03. 13) Patent registration No. 10-1560206 (Registration date: October 7, 2015) Patent registration No. 10-1936247 (Registration date: 2019. 01. 02)

The present invention was created to solve the above problems, and facilitates maintenance/inspection of an electric control box and heat dissipation of electric components and solar panels, and facilitates heat dissipation by allowing outside air to pass smoothly into the electric control box according to Bernoulli's principle.

The purpose is to provide a streetlight having a heat dissipation structure for an electric control box that maintains cooling and sealing of the electric control box to prevent corrosion of electric components due to moisture.

The present invention for achieving the above object is a streetlight having a hollow-formed support, a support pipe connected to the upper end of the support to support a lighting fixture and a solar panel, and an electric control box containing electrical components for controlling the lighting fixture.

The above electric control box is fixed to the outside of the above support,

A lower connecting pipe connecting the inner lower part of the above electric control box and the hollow part of the above support,

An upper connecting pipe is provided that connects the inner upper part of the above electric control box and the hollow part of the above support,

By forming a perforation communicating with the outside atmosphere on the lower side of the above-mentioned support located below the above-mentioned electric control box,

It is characterized in that outside air is introduced into the inside of the column through the above-mentioned opening, and a portion of the outside air sequentially passes through the lower connecting pipe, the electric control box, and the upper connecting pipe to dissipate heat to the electric components.

In addition, the streetlight of the present invention is characterized by having a temperature sensor for detecting the temperature of the electric control box, and an air shutoff valve for opening and closing the hole or lower connecting pipe according to a detection signal of the temperature sensor.

In addition, in the streetlight of the present invention, a plurality of internal boxes in which the electric components are accommodated are provided inside the electric control box,

A lower pipe arranged inside the electric control box and provided on the lower side of the inner box and connected to the lower connection pipe, a lower branch pipe connecting the lower part of the lower pipe and each inner box, an upper pipe arranged inside the electric control box and provided on the upper side of the inner box and connected to the upper connection pipe, and an upper branch pipe connecting the upper pipe and the upper part of each inner box are provided.

It is characterized in that the above external air passes through each of the above internal boxes to dissipate heat to the electrical components.

In addition, in the streetlight of the present invention, the support is composed of a lower support having a lower end fixed to the ground and having the hole formed therein, and an upper support connected to the upper end of the lower support and having a diameter smaller than that of the lower support.

The above lower connecting tube is characterized in that it is connected to the lower support, and the above upper connecting tube is characterized in that it is connected to the upper support.

In addition, in the streetlight of the present invention, the support is composed of a lower support having a lower end fixed to the ground and having the hole formed therein, and an upper support connected to the upper end of the lower support and having a diameter smaller than that of the lower support.

The above lower connecting tube is characterized in that it is connected to the lower support, and the above upper connecting tube is characterized in that it is connected to the upper support.

In addition, in the streetlight of the present invention, the inner boxes are provided in a plurality in series, and the outside air is sequentially passed through each inner box.

In addition, in the streetlight of the present invention, the support tube is formed hollow, and the upper connecting tube is connected to one end of the support tube.

Equipped with a case that supports the above solar panel and the above lighting fixture,

By making the other end of the above support pipe communicate with the internal space of the above case,

It is characterized in that the outside air discharged through the upper connecting pipe radiates heat to the solar panel and lighting fixture through the support pipe.

In addition, in the streetlight of the present invention, a solar auxiliary panel supported by the support pipe, a fixing bracket for fixing the solar auxiliary panel to the support pipe, and an air supply pipe which is arranged parallel to the outside of the support and has an upper end supported by the fixing bracket and is arranged on the lower side of the support pipe and has a lower end open to the atmosphere are provided.

It is characterized in that outside air is supplied through the lower part of the above air supply pipe to dissipate heat to the above solar auxiliary panel.

First, by arranging the electric control box (100) that accommodates various electric components (131) on the outside of the support (10), maintenance and inspection are easy.

Second, external air is introduced into the interior of the support (10) through the opening (11a) on the lower side of the support (10), and some of the external air passes sequentially through the lower connecting pipe (140), the electric control box (100), the upper connecting pipe (150), and the support pipe (15), thereby enabling heat dissipation of the electrical components (131), solar panels, and lighting fixtures (20) without a separate external power source.

Third, by providing a temperature sensor that detects the temperature inside the electric control box (100) and an air shutoff valve that opens and closes the air hole (11a) or the lower connecting pipe (140) according to the detection signal of the temperature sensor, there is an effect of being able to control the heat dissipation conditions according to climate change.

Fourth, as the flow rate of the outside air increases in the upper support (12) with a narrow diameter according to Bernoulli's principle, the pressure on the upper connecting pipe (150) side decreases, which makes the outside air flow inside the electric control box more favorable, thereby increasing the heat dissipation efficiency.

Figures 1 and 2 are drawings showing conventional street lights.
Figure 3 is a perspective view showing a streetlight according to an embodiment of the present invention.
Figure 4a is a perspective view showing the lower side of the support.
Figure 4b is a perspective view showing the cover separated from Figure 4a.
Figure 5a is a perspective view showing the electric control box placed on the support.
Fig. 5b is a perspective view showing the inside of the electric control box of Fig. 5a.
Fig. 6 is a cross-sectional view of the main body of Fig. 5a.
Figure 7 is a schematic cross-sectional view showing another embodiment of the present invention;
Figure 8a is an excerpt showing a portion of a solar auxiliary panel with the fixed bracket removed.
Figure 8b is a cross-sectional view illustrating the heat dissipation structure of a solar auxiliary panel through an air supply pipe.
Figure 9 is a control flow diagram of the streetlight of the present invention.

A streetlight having a heat dissipation structure of a hybrid type electric control box of an embodiment of the present invention installs the electric control box on the outside of a streetlight pole, and allows outside air introduced through the lower part of the streetlight pole to be discharged to the upper part of the pole via the electric control box, thereby enabling heat dissipation of electric components and solar panels within the electric control box.

In addition, the present invention forms a pressure difference between the air inlet and air outlet of the electric control box, thereby allowing the outside air to flow smoothly, thereby improving the heat dissipation efficiency of the electric components.

The hybrid electric control box is equipped with a conventional electric control unit and an ESS, a system that stores energy produced from solar or wind power.

Referring to FIG. 3 and FIG. 5a, which illustrate a streetlight according to an embodiment of the present invention, it comprises a support (10) formed in a hollow (10a) shape, a support pipe (15) connected to the upper end of the support (10) to support a solar panel (300), a solar auxiliary panel (301), and a lighting device (20) (see FIG. 8a), a fan member (200) that generates electricity using wind power, and an electric control box (100) that is fixed to the outside of the support (10) and accommodates an electric component (131) for controlling the lighting device (20).

The above solar panel (300) and lighting device (20) are each supported on the upper and lower surfaces of a case (310) having an internal space.

Referring to Fig. 9, the electric control box (100) houses a power storage device and control devices that store electricity produced from the solar panel (300) and the solar auxiliary panel (301) and electricity produced from the fan member (200), and these are electrically connected to the lighting device (20) and control ON/OFF.

Referring to FIGS. 3, 5 and 6, the inner lower side of the electric control box (100) is connected to the hollow (10a) of the support (10) by a lower connecting pipe (140), and the inner upper side of the electric control box (100) is connected to the hollow (10a) of the support (10) by an upper connecting pipe (150).

A check valve (not shown) to prevent backflow of air may be installed in the above lower connecting pipe (140).

In addition, an air blocking valve may be installed in the lower connecting pipe (140) to block the flow of external air to prevent overcooling of the electric control box (100) and solar panel (300) in winter. (See Fig. 9)

Referring to FIGS. 4a and 4b, a hole (11a) for introducing external air is formed on the lower side of the support (10) located lower than the electric control box (100). A cover (13) having an opening (13a) formed therein is connected to the support (10) to prevent external foreign substances from entering through the hole (11a).

The streetlight of the present invention is equipped with a generator (not shown) that generates electricity by the rotation of the fan member (200) and a battery (not shown) that stores the electric energy of the generator. The generator and battery may be equipped in the electric control box (100).

A streetlight having the above configuration allows outside air to flow into the inside of the support (10) through the opening (11a) and allows some of the outside air to sequentially pass through the lower connecting pipe (140), the electric control box (100), and the upper connecting pipe (150) to dissipate heat from the electric component (131).

Meanwhile, the streetlight of the embodiment of the present invention is equipped with a temperature sensor that detects the temperature inside the electric control box (100) and an air shutoff valve (not shown) that opens and closes the opening/closing hole (13a) according to a detection signal of the temperature sensor.

For example, when the temperature inside the electric control box (100) is low, such as in winter, the opening (13a) is blocked, and in summer, the opening (13a) is opened to control the heat dissipation temperature.

Referring to FIGS. 5a, b and 6, a plurality of internal boxes (130) in which the electrical components (131) are accommodated are provided in parallel inside the electric control box (100) so that heat can be dissipated for each electrical component (131).

A lower pipe (110) connected to the lower connecting pipe (140) is provided at the lower side of the inner box (130), and the lower pipe (110) and the lower part of each inner box (130) are connected by a lower branch pipe (115).

In addition, an upper pipe (120) connected to the upper connecting pipe (150) is provided on the upper side of the inner box (130), and the upper pipe (120) and the upper part of each inner box (130) are connected by an upper branch pipe (125).

The above configuration increases heat dissipation efficiency by allowing external air introduced through the above-mentioned openings (11a) to pass through each of the above-mentioned internal boxes (130) and dissipate heat to the above-mentioned electrical components (131).

In addition, the inner boxes (130) may be arranged in a plurality of series, and configured so that outside air passes through each inner box (130).

Referring to FIG. 5a, FIG. 8a and FIG. 8b, the support pipe (15) is formed as a hollow (15a), the upper connecting pipe (150) is connected to the hollow (15a) on one side of the support pipe (15), and the other side of the support pipe (15) is connected to the internal space of the case (310).

In this case, the external air discharged through the upper connecting pipe (150) flows into the internal space of the case (310) through the support pipe (15) to dissipate heat from the solar panel (300) and the lighting device (20).

In addition, referring to FIGS. 8a and 8b, the solar auxiliary panel (301) supported on the support pipe (15) is fixed by a fixing bracket (500).

An air supply pipe (400) is arranged parallel to the outside of the above-mentioned support (10). The upper part of the air supply pipe (400) is supported by the above-mentioned fixing bracket (500) and is arranged on the lower side of the above-mentioned solar auxiliary panel (301), and the lower part is open to the atmosphere.

The above configuration allows external air to be supplied through the lower part of the air supply pipe (400) to dissipate heat from the solar auxiliary panel (301).

Referring to FIG. 7, which shows another embodiment of the present invention, the support (10) is composed of a lower support (11) whose lower end is fixed to the ground and in which the hole (11a) is formed, and an upper support (12) which is connected to the upper end of the lower support (11) and has a smaller diameter than the lower support (11).

In addition, the lower connecting pipe (140) is configured to be connected to the lower support (11), and the upper connecting pipe (150) is configured to be connected to the upper support (12).

The above configuration increases the speed of the outside air in the upper support (12) with a narrow diameter according to Bernoulli's principle, thereby lowering the pressure on the upper connecting pipe (150) side, thereby making the outside air flow inside the electric control box (100) more favorable, thereby increasing the heat dissipation efficiency of the electric components.

10...Landlord 10a...Hollow
11...sub-base 11a...through
12...Upper support 13...Cover
15...support pipe 20...lighting fixture
100...Electrical control box 110...Sub-pipe
115...Lower branch 120...Upper branch
125...Upper branch 130...Inner box
140...Lower connector 150...Upper connector

Claims (8)

In a streetlight, a support (10) formed in a hollow (10a) shape, a support pipe (15) connected to the upper end of the support (10) to support a lighting fixture (20) and a solar panel (300), and an electric control box containing electrical components (131) for controlling the lighting fixture (20) are provided.
The above electric control box (100) is fixed to the outside of the above support (10),
A lower connecting pipe (140) connecting the inner lower side of the above electric control box (100) and the hollow space (10a) of the above support (10),
It has an upper connecting pipe (150) that connects the inner upper side of the above electric control box (100) and the hollow (10a) of the above support (10).
By forming a through hole (11a) communicating with the outside atmosphere on the lower side of the support (10) located lower than the above electric control box (100),
A streetlight having a heat dissipation structure of a hybrid type electric control box, characterized in that external air is introduced into the interior of the support (10) through the above-mentioned opening (11a) and a portion of the external air sequentially passes through the lower connection pipe (140), the electric control box (100), and the upper connection pipe (150) to dissipate heat to the electric component (131). A streetlight having a heat dissipation structure of a hybrid type electric control box, characterized in that in claim 1, a temperature sensor for detecting the temperature of the electric control box (100) and an air shut-off valve for opening and closing the hole (11a) or the lower connecting pipe (140) according to a detection signal of the temperature sensor are provided. In claim 1 or claim 2, a plurality of internal boxes (130) are provided inside the electric control box (100) in which the electric components (131) are accommodated,
A lower pipe (110) arranged inside the above electric control box (100) and provided on the lower side of the inner box (130) and connected to the lower connecting pipe (140),
A lower branch pipe (115) connecting the lower part of the above lower pipe (110) and the lower part of each inner box (130),
An upper pipe (120) arranged inside the electric control box (100) and provided on the upper side of the inner box (130) and connected to the upper connection pipe (150),
By providing an upper branch pipe (125) connecting the upper part of the upper pipe (120) and the upper part of each inner box (130),
A streetlight having a heat dissipation structure of a hybrid type electric control box, characterized in that the external air passes through each of the internal boxes (130) to dissipate heat to the electric components (131). In claim 1 or 2, the support (10) is composed of a lower support (11) whose lower end is fixed to the ground and in which the hole (11a) is formed, and an upper support (12) connected to the upper end of the lower support (11) and having a smaller diameter than the lower support (11).
A streetlight having a heat dissipation structure of a hybrid type electric control box, characterized in that the lower connecting pipe (140) is connected to the lower support (11) and the upper connecting pipe (150) is connected to the upper support (12). In claim 3, the support (10) is composed of a lower support (11) whose lower end is fixed to the ground and in which the hole (11a) is formed, and an upper support (12) connected to the upper end of the lower support (11) and having a smaller diameter than the lower support (11).
A streetlight having a heat dissipation structure of a hybrid type electric control box, characterized in that the lower connecting pipe (140) is connected to the lower support (11) and the upper connecting pipe (150) is connected to the upper support (12). A streetlight having a heat dissipation structure of a hybrid electric control box, characterized in that in claim 3, a plurality of inner boxes (130) are provided in series and external air is sequentially passed through each inner box (130). In claim 1, the support pipe (15) is formed as a hollow (15a), and the upper connecting pipe (150) is connected to one end of the support pipe (15).
By providing a case (310) that supports the above solar panel (300) and the above lighting device (20),
By making the other end of the above support tube (15) connected to the internal space of the case (310),
A streetlight having a heat dissipation structure of a hybrid type electric control box, characterized in that the outside air discharged through the upper connecting pipe (150) dissipates heat to the solar panel (300) and lighting fixture (20) through the support pipe (15). In claim 7, a solar auxiliary panel (301) supported on the support pipe (15),
A fixing bracket (500) that fixes the above solar auxiliary panel (301) to the above support pipe (15), and
An air supply pipe (400) is provided which is arranged parallel to the outside of the above-mentioned support member (10), the upper end of which is supported by the above-mentioned fixing bracket (500), and is arranged on the lower end of the above-mentioned support pipe (15), and the lower end of which is open to the atmosphere.
A streetlight having a heat dissipation structure of a hybrid type electric control box characterized in that external air is supplied through the lower part of the air supply pipe (400) to dissipate heat to the solar auxiliary panel (301).