RU234106U1 - LED street light - Google Patents

Abstract

The utility model relates to the field of lighting engineering, namely to lighting devices using semiconductor devices - light-emitting diodes. The LED street lamp, like the prototype, contains a hollow housing that provides an inflow of air inside. Unlike the prototype, the housing is closed at one end and has an opening in the side surface in the form of a window, opposite which a metal plate is fixed with a gap relative to the housing, with sockets with base lamps fixed to it, and wires are located under the plate that provide connection to an external power source, and an element for fastening the lamp to the support, connected to the housing by a detachable fastener. The use of the utility model will ensure high reliability, protection from mechanical impacts and adverse environmental conditions, combined with ease of manufacture and operation. 8 clauses, 3 figs.

Description

The utility model relates to the field of lighting engineering, namely to lighting devices using semiconductor devices - light-emitting diodes.

LED lights are increasingly becoming the choice for street lighting.

The utility model can be used as street lighting on highways, in automobile tunnels, in pedestrian areas, parks, residential areas and as architectural design solutions.

LED lighting devices have become widespread due to their inherent advantages - high luminous efficiency, low energy consumption, long service life, high level of safety, compactness and light weight, resistance to mechanical impact, purity of light, radiation directionality, etc.

They not only illuminate the space, but also create a comfortable atmosphere comparable to warm sunlight. This is especially important in the evening, when it is necessary to ensure safety and comfort in public places.

However, when using LED lighting devices, it is necessary to take into account some nuances.

On the one hand, the use of high-power LED devices in street lamps, and these are the ones used in them, leads to thermal degradation. The use of weak heat dissipation is fraught with their premature failure. A high level of heat dissipation is possible through convection cooling. To do this, it is necessary to ensure an unimpeded flow of fresh air to the diodes, which can be observed in devices without a case.

On the other hand, street LED lights are used in quite harsh conditions. Therefore, it is necessary to provide structural elements that would protect them from adverse environmental influences, that is, the presence of a housing is necessary.

The contradiction that has arisen can be resolved by using the claimed technical solution.

Known is "LED luminaire with dynamic convection cooling", RU 124361, published: 20.01.2013 Bulletin No. 2, containing a hollow body made of a section of a hollow pipe with open ends made of heat-conducting material, on the outer surface of which an LED light source is fixed, which is an LED module, connected to a power source, and installed in close proximity to one of the open ends of the body.

The lamp has good temperature performance due to the fact that the cold air sucked in through the inlet passes through the air space of the internal cavity of the housing heated by the LED module and cools the LED module.

However, the unprotected nature of the LED module makes it vulnerable to mechanical impacts and exposes it to the risk of exposure to adverse climatic conditions.

In addition, the known lamp is characterized by low maintainability, since the inability to separate the LED module from the housing leads to the need to replace the entire lamp even if one LED element in the module degrades.

Known is "LED Light Fixture", RU 2399833, published: 20.09.2010 Bulletin No. 26, comprising a housing connected to a standard base, made in the form of a tetrahedral cup placed in a protective optically transparent cap, made with the condition of air inlet and outlet from it. The edges of the cup are the sections of LEDs, in which a zener diode is connected in parallel to each LED with a network choke and a power supply unit consisting of a converter and a transformer located inside the cup. In the lower and upper parts of the housing, openings are made that ensure effective cooling of the LEDs and other elements of the device due to air draft in the cup due to the air heating up in it. The technical result is an increase in the reliability of the lamp, uniform and high-quality illumination of the area around the lamp.

The lamp, having a housing, has good protection from adverse external influences.

However, the presence of holes in the case does not provide sufficient heat dissipation. Using a weak heat sink for high-power LED devices is fraught with their premature failure.

Known is "Street LED lamp", BY 159 303, published: 10.02.2016 Bulletin No. 4, including a housing, an LED module, a heat-receiving base, a heat pipe, heat-dissipating fins and a mounting flange, characterized in that the heat pipe is enclosed in a rigid cantilever pipe to which the heat-dissipating fins are attached.

When the LED module creates a luminous flux, heat is released, which is transferred to the heat pipe through the heat-receiving base. The heat pipe transfers heat to its finned part, where the heat is transferred through the heat pipe body and the walls of the rigid console pipe to the heat-dissipating fins and dissipates into the environment. The device has a high efficiency in ensuring the temperature mode of LED operation.

However, to ensure the temperature conditions for street lamps using powerful LEDs, a sufficiently large area of heat-dissipating fins is needed, which will lead to an increase in the dimensions and weight of the lamp. This will negatively affect the reliability characteristics.

Known is "Street LED Light", RU 2473007, published: 20.01.2013 Bulletin No. 2, containing a board with LEDs, a power supply unit, and a radiator housing having a base, to the inner surface of which a board with LEDs is attached, and on the outer surface ribs are made oriented in the direction from the front side of the base to its rear side, according to the invention, a compartment for fastening the light to a rod support is formed on the base along its length after the ribs near its rear side, wherein in the base and in the said compartment on their rear side there is a recess formed, forming a seat for the rod support.

The presence of a housing, along the ribs of which rainwater is drained, provides reliable protection of the device from adverse climatic conditions of the street. However, a closed housing complicates the heat exchange process. Which can lead to degradation of the LEDs and loss of operability of the device.

The closest technical solution selected as a prototype is "LED luminaire with dynamic convection cooling", 2684461, published: 09.04.2019 Bulletin No. 10, containing a hollow C-shaped profile housing with open end ends. An LED module is fixed to the outer surface of the housing, connected to a power supply installed in the inner cavity of the housing. The power supply is made with side walls in which through holes are made, due to which there is an inflow of cold air into the housing.

The LED module is rigidly fixed to the shelves of the C-shaped profile of the housing, using fasteners in such a way that a closed tubular profile is formed. An optical element is rigidly attached to the shelves of the C-shaped profile of the housing, on top of the LED module, using fasteners. Detachable (self-tapping screws, bolts, etc.) and/or non-detachable (rivets, etc.) fasteners can be used as fasteners.

The presence of an optical element installed on top of the LED module reliably protects the lamp from adverse external influences.

However, the power supply unit, which is installed in the case, covers the hollow case with its side walls from the ends. Air penetrates only through the holes in the side walls of the power supply unit. This creates resistance to the air flow and thereby reduces the efficiency of heat dissipation, which can lead to degradation of the LEDs.

Thus, the power supply installed in the internal cavity of the housing limits the service life of the lamp, preventing the full use of the resource of the LED sources. The housing has a rather complex shape, which can only be realized in factory conditions.

At the same time, the lamp is characterized by low maintainability, since if one LED loses functionality, it is necessary to remove the entire LED module, since it is a sealed unit.

The use of the claimed utility model will help to solve this problem.

The objective of the utility model is to create a lamp that is reliable, easy to manufacture, and convenient to maintain and repair.

The technical result of using the claimed utility model is manifested in the possibility of combining high reliability with simplicity of design, which does not require complex equipment or highly qualified workers during manufacture and repair.

Technical solutions from the state of the art do not allow solving this problem.

The stated technical solution, a street LED lamp, which, like the prototype, contains a hollow body that provides air flow inside, will allow solving the set task with the specified technical result.

Unlike the prototype, the housing is closed at one end and has an opening in the side surface in the form of a window, opposite which a metal plate is fixed with a gap relative to the housing, with sockets with base lamps fixed to it, and under the plate there are wires providing connection to an external power source, and an element for fastening the lamp to the support, connected to the housing by a detachable fastener.

Due to the fact that the case is open at one end, the presence of an open window and the location of the plate with a gap relative to the case, a favorable air circulation mode is created and the lamps are cooled naturally. At the same time, the absence of other elements, such as a power supply, does not create obstacles to the movement of the air flow. The exclusion of the power supply became possible due to the use of base lamps that can be connected directly to the 220 V network.

Due to the location of the lamps inside the housing, they are protected from adverse environmental conditions, snow, rain.

The gap between the plate and the body can be of a fixed size. Its presence is important to ensure the technical result.

For ease of installation and repair, the gap between the plate and the body can be made variable using detachable fasteners.

The most common form of pipes are rectangular and cylindrical iron pipes, so it is advisable to use such forms of pipes.

The use of detachable fasteners allows for the quick manufacture and repair of the lamp.

Using a variable angle console bracket allows you to securely attach the light to the support while still providing the required tilt angle in a particular case.

The U-shaped profile, rigidly connected to the body, ensures reliable fastening of the bracket to the body of the lamp.

All features included in an independent claim of the utility model formula form a functionally constructive unity and are necessary and sufficient, at the existing level of generalization, to achieve the above-mentioned technical result.

The distinctive features, together with the common features of the closest analogue, form a technical solution that is not known from sources of patent and scientific and technical information; there are also no known facts of open use in the territory of the Russian Federation of devices containing all of the listed features, therefore the claimed utility model meets the patentability condition “Novelty”.

The section of the description “implementation of the invention” provides a sufficient amount of information confirming the possibility of implementing the utility model with the achievement of the specified technical result.

In this regard, it can be stated that the claimed device meets the patentability requirement “Industrial applicability”.

Below is an example of a specific implementation of a utility model, which does not cover and, moreover, does not limit the entire scope of claims of this technical solution, but is only illustrative material confirming the possibility of manufacturing the product.

Fig. 1 shows a schematic diagram of a street LED lamp.

Fig. 2 shows the design of the body with a plate, with cartridges and a corner installed on it.

Fig. 3 schematically shows the lamp from the open end of the housing without a bracket.

The LED street light shown in Fig. 1 comprises a housing 1 made of an iron pipe of rectangular cross-section measuring 80x60x500 mm, which is closed at one end with a welded iron plate (not shown in Fig. 1), closing the entire cross-section of the pipe at the end (a plastic plug may be used instead of this plate), and in the side part there is an opening in the form of a window 2, in the housing 1 through the window 2 an iron plate 3 is installed with a gap relative to the housing 1, on the front side of which holders 4 of the GU10 modification are attached using M3 bolts, into which LED lamps 5 of the GU10 modification are installed. The use of this type of lamps is preferable due to the fact that they have a focused directional glow and optimal fastening. The fastening of the lamp to the holder is both reliable and quickly removable.

In this case, other types of lamps can be used, such as GZ10 and GX10, but they require a corresponding socket, or use the GZ10 socket, which is universal and fits all three types of lamps.

The wires from the sockets (not shown in Fig. 1) are brought out from the back side of plate 3 and connected to the power cable 6 by soldering (they can be connected with quick-release terminals of the WAGO type); a console bracket with a variable angle 7, by means of which the device is attached to the support.

Fig. 2 shows the housing 1 with installed cartridges 4 and a U-shaped profile 8 for fastening the bracket 7 by means of a bolt connection 9 to the housing 1

The lamp shown in Fig. 3 from the open end of the housing without a bracket contains a housing 1 with a U-shaped profile 8, a bolt 10 of the M6 type, which is welded to the housing 1 with a head 11, and between the nuts 12 there is a plate 3, which, by tightening the nuts 12, can move relative to the housing 1, establishing the necessary gap, ensuring optimal passage of wires (not shown in Fig. 3) and free air circulation.

The lamp is made as follows. A body 1 is made from a section of iron pipe, for which a window 2 is cut out from its side with a grinder (or a CNC laser machine is also possible), a plate is welded to one end according to the size of the pipe, covering the entire cross-section of the pipe.

First, the cartridges 4 are installed on the plate 3 in the appropriate quantity and at the appropriate distance from each other. The quantity and distance between the cartridges are determined based on the specific requirements for the illumination of the object.

The wires from the cartridges are brought out to the back side of plate 3 for further soldering to the power cable.

Next, symmetrically relative to the edges of window 2, two bolts 10 with heads 11 are welded to body 1, and a nut 12 is screwed onto each bolt from above. Through window 2, the prepared plate 3 with cartridges 4 is installed on nuts 12 so that additional nuts 12 are screwed onto bolts 10 protruding through plate 3, with the help of which the seating depth of plate 3 is adjusted.

After installing plate 3, LED lamps 5 are installed in sockets 4.

Repairs are carried out as follows. If lamp 5 has burned out, it can be replaced at the location of the lamp.

To eliminate more complex defects. The lamp is disconnected from the power cable 6, removed from the support. The bolt connection 9 is unscrewed and the bracket 7 is removed. The additional nuts 12 are unscrewed, and the plate 3 is removed through the window 2. The fault is searched for. The defect is eliminated. After this, the repaired plate 3 with the sockets 4 and lamps 5 is returned to its place.

Thus, the lamp has high reliability due to the fact that a favorable operating mode of the LEDs is created, due to the natural cooling of the lamps by air, which comes from the open end of the housing, passes through the gap between the housing and the plate on which the lamp sockets are installed, cools them and exits through the open window.

At the same time, the absence of other elements, such as a power supply, does not create obstacles to the air flow. The exclusion of a power supply became possible due to the use of base lamps that can be connected directly to a 220 V network.

Due to the location of the lamps inside the housing, they are protected from mechanical impacts and adverse environmental conditions, snow, rain, which has a positive effect on the performance of the lamp, increasing its reliability.

The lamp is easy to manufacture, as it does not require complex mechanisms and devices.

The lamp does not create any problems during operation and can be repaired without the use of complex equipment and highly qualified specialists.

Claims (9)

1. A street LED luminaire characterized by the fact that it contains a hollow housing, closed at one end and with an opening in the side surface in the form of a window, opposite which a metal plate is fixed with a gap relative to the housing, with sockets with base lamps fixed to it, and under the plate there are wires providing for the connection of the sockets to an external power source, as well as an element for fastening the luminaire to the support, connected with a detachable fastener to the housing. 2. A street LED lamp according to item 1, characterized in that the plate is made of iron. 3. A street LED lamp according to item 1, characterized in that the gap between the plate and the housing is designed with the possibility of changing it. 4. A street LED light according to item 1, characterized in that the plate is secured by means of detachable fasteners rigidly connected to the body. 5. A street LED lamp according to item 1, characterized in that the body is made of a rectangular iron pipe. 6. A street LED lamp according to item 1, characterized in that the body is made of an iron cylindrical pipe. 7. A street LED lamp according to item 1, characterized in that the sockets are secured by means of detachable fasteners. 8. A street LED light according to item 1, characterized in that a console bracket with a variable angle is selected as the light fixture fastening element. 9. A street LED light according to item 8, characterized in that the fastening element is made with a U-shaped profile part (8) for fastening the bracket to the body.