BG3061U1 - Led park and street lighting fixture - Google Patents

Abstract

The utility model relates to a LED park and street lighting fixture, which could find application for lighting of open spaces between buildings, on alleys in parks and gardens. The LED lighting fixture consists of a mounting base (1) with provided to it LED boards (5) with LED diodes and LED drivers (6), covered with a spherical lampshade (13). To the mounting base (1) are formed two vertical carrying consoles (2), on which are mounted one above the other ribbed lower housing (3) and an upper housing (4), mutually located on 90о relative to each other, as in their upper part are shaped cooling holes (14). To each of the housings (3 and 4) are oppositely mounted by two of the LED boards (5) with light-emitting diodes and LED drivers (6), which are located at angels from 50o to 60o against the vertical axis of the lighting fixture. The LED boards (5) with the light-emitting diodes, mounted on the lower housing (3), are located in a zone with height from bottom of the base (1) of 1.0 to 1.2 against the diameter of the base (1), and LED boards (5) with light-emitting diodes, mounted to the upper housing (4) are located in the zone with height from bottom of the base (1) of 1.5 to 1.7 against the diameter of same base (1). In this way the LED park and street lighting fixture, according to this utility model, provides a uniform illumination of the earth surface and the space around the lamp between the buildings and alleys.

Description

Field of technology

This utility model relates to an LED luminaire, and in particular to an LED park and street luminaire, which can be used for lighting open spaces between buildings, alleys in parks and gardens.

BACKGROUND OF THE INVENTION

An LED park and street lighting fixture is known, including a horizontally located mounting base placed on a vertical support tube, and a socket with a standard LED lamp screwed into it is mounted vertically on the mounting base. The LED luminaire is covered with a spherical lampshade / 1 /.

Most of the light rays in this type of LED luminaire are directed sideways and upwards in the spherical lampshade. Thus the light is reflected and refracted by the lampshade and due to the reflection and refraction of the light rays the losses of light flux are relatively large and thus a low light output is obtained without directly illuminating the ground and the space between buildings and alleys in parks and the gardens. The reliability and service life of this type of lighting fixtures depend largely on the type of LED lamp used.

Also known is an LED park and street lighting fixture, including a horizontally placed mounting base mounted on a vertical support tube, on which a base is placed a horizontally LED board with LEDs and an LED driver. The LED luminaire is covered with a spherical lampshade / 2 /.

The light rays emitted by the LED board with LED diodes are directed upwards and at an angle to the side. Here, as with the above-mentioned LED luminaire, the light is reflected and refracted by the lampshade and, as a result of the reflection and refraction of the light rays, the luminous flux losses are relatively large and thus a low light output is obtained without directly illuminates the earth's surface and the space between buildings and alleys in parks and gardens.

Technical essence of the utility model

The current utility model aims to create an LED park and street luminaire with the constructive layout of the luminaires, which allows to obtain uniform illumination of the ground and the space around the lamp between buildings and alleys with minimal loss of LED light flux and which lighting fixture to be characterized by increased reliability and extended service life.

The problem is solved by the proposed LED park and street lighting fixture, according to the described utility model, includes a horizontally placed mounting base with LED boards with LEDs and LED drivers covered with a spherical lampshade. According to the utility model, two vertical support brackets are formed to the mounting base, on which the ribbed lower housing and the upper housing are mounted one above the other. Two of the boards with LEDs and LED drivers are tightly mounted opposite each of the housings, and the surfaces for mounting the boards, respectively to the lower and upper housing, are shaped so that the boards are located at an angle of 50 ° to 60 ° to the vertical axis of the luminaire. The LEDs of each of the two boards mounted on the lower housing are located in an area with a height from the bottom of the base from 1.0 to 1.2 relative to the diameter of the base, and the LEDs of the two boards mounted to the upper housing are located in an area with a height of the bottom of the base from 1.5 to 1.7 relative to the diameter of the same base.

According to a preferred embodiment of the LED park and street luminaire, the lower housing and the upper housing mounted on the vertical support brackets to the mounting base are mutually arranged at 90 ° to each other. In LED park and street lighting, each of the boards with LEDs and LED drivers is mounted to the lower housing and the upper housing by means of shields, with holes formed in them for each LED and covering the standard SMD elements of the LED drivers. Cooling openings are formed in the upper part of the housings, ensuring the air circulation in the lampshade.

155 Descriptions to certificates for registration of utility models № 01.1 / 15.01.2019

The advantages of LED park and street lighting according to the current utility model is that it provides uniform light flux and minimum light losses at maximum light output, allowing even illumination of the ground and the space around the lamp between buildings and alleys. This is due to the oppositely located and mounted in two overlapping housings, LED boards, oriented at an angle to the ground and placed at a certain height above the bottom of the base. Also, the LED luminaire has a long service life due to the good cooling of the LEDs from the ribbed housings, which are designed with the required volume and cooling surface and with cooling holes provided at their upper ends. At the same time, the LED luminaire does not require special maintenance.

Explanation of the attached figures

An exemplary embodiment of the LED park and street luminaire according to the present utility model, in particular the LED park lamp, is shown in more detail in the accompanying figures, which reveal it without limiting it, as follows:

Figure 1 is an axonometric view of a park LED lamp with two housings and a transparent spherical lampshade;

figure 2 - front view of the LED park lamp from fig. 1 with removed lampshade; figure 3 - side view of the LED park lamp from fig. 1 with removed lampshade; Figure 4 - top view of the LED park lamp with the lampshade removed;

figure 5 - section along the vertical axis of the LED park lamp from fig. 3.

Exemplary implementation of the utility model

According to an exemplary embodiment of the utility model shown in the attached figures, the LED park and street luminaire comprises a horizontally located mounting base 1, with two vertical supporting brackets 2 formed on it, on which two identical aluminum housings are mounted on top of each other - lower 3 and upper 4, located at 90 ° to each other. The housings 3 and 4 are ribbed, which allows their efficient cooling by determining the required area of the cooling surfaces and the required volume for heat transfer.

To each of the two aluminum housings 3 and 4 are mounted opposite two boards 5 with LEDs and LED drivers 6. The LEDs are arranged U-shaped on the boards 5. (Location of) The surfaces for mounting the boards 5 respectively to the lower housing 3 and the upper housing 4 is shaped so that the boards 5 are arranged at an angle of 50 ° to 60 ° to the vertical axis of the luminaire. The boards 5 are mounted by pressing with four plastic shields 7, fastened respectively to the two housings - the lower 3 and the upper 4, by means of screws 8. The pressing is performed in the area of the LEDs for optimal heat transfer and cooling of the LEDs. The shields 7 have shaped holes for each LED so as not to obscure the emitted light and cover the standard SMD elements of the LED drivers 6. The LEDs on each of the two boards 5 mounted on the lower housing 3 are located in a height zone from the bottom of the base 1 from 1.0 to 1.2 relative to the diameter of the base 1, and the LEDs of the two boards 5 mounted to the upper housing 4 are located in an area with a height from the bottom of the base 1 from 1.5 to 1.7 relative to the diameter of the same base 1. All electronic components with conventional mounting 9 are located on the inside of the boards 5 and are placed inside the housings 3 and 4 in a niche formed for this purpose. In this area are located all the connecting wires (not shown in the figures) between the boards 5 and the output wires (not shown in the figures) to provided in the mounting base 1 cable entry 10 for power cable (not shown in the figures) and connection terminal 11 type 2p + E . The cable entry 10 through which the power cable passes separates the internal space of the luminaire from the external environment to achieve the required degree of protection. In the base 1 are formed sockets oriented at 120 ° relative to each other, in which sockets are mounted respectively two nuts with two bolts 12, for fixed fixing of the base 1 on a pole (mounting tube), through which passes the power cable.

All LEDs on the boards 5 are connected in series and have a built-in parallel circuit. 156 Descriptions to utility registration certificates № 01.1 / 15.01.2019 neural diode in order not to break the circuit in case of a defect in any of the LEDs.

The entire construction of the LED park and street lighting fixture is closed by a spherical lampshade 13 mounted to the mounting base, which protects all elements.

Cooling holes 14 are formed in the upper part of the housings 3 and 4, in this case nine pieces each (Fig. 4), so that the electronic elements inside them can be cooled by convection from the air in the spherical lampshade 13. At the bottom of the base 1, three openings are also formed, so that when the lampshade 13 is screwed in, possibly the water flows through it, so that it can flow outwards and the degree of protection is not violated.

An embodiment is also possible in which different illuminance of individual segments of the earth's surface is sought, in which the two housings 3 and 4 are located relative to each other at a different angle of 90 °.

Action of LED park and street lighting fixture

The operation of the LED park and street lighting fixture is as follows.

When a supply voltage 23 0V AC is connected to the connection terminal 11 type (2p + E) the voltage is supplied to the input of each of the LED drivers 6 for control of the LEDs connected in series on the boards 5. Thanks to the built-in LEDs parallel zener diode circuit does not interrupt even in the event of a defect in any of the LEDs. From the drivers 6 comes a constant voltage to the LEDs, through which current flows with the required force. The LEDs on the four boards 5 emit a light flux in a direction perpendicular to the surface of the boards 5. Due to the specific location of the four boards 5, oriented at an angle of 50 ° to 60 ° to the vertical axis and 90 ° to each other, respectively in the two housings 3 and 4, as well as the height of the LEDs of the two boards 5 in areas with a height of 1.0 to 1.2 for the lower housing 3 and 1.5 to 1.7 for the upper housing 4, respectively, relative to the diameter of the base 1, the luminous flux is uniform, illuminates evenly the ground surface in the whole light spot around the lamp between the buildings and the alleys and the light losses are minimal. The LEDs emit light flux at optimal load to obtain maximum service life and maximum light output due to the good cooling provided by the increased cooling surface area by ribbing the housings 3 and 4 and thus providing the required heat transfer volume. The connection between the two housings 3 and 4 allows good heat transfer between them. Through the cooling openings 14 in the upper surface of the housings 3 and 4, the warm air in the inner part of the housings 3 and 4 by continuous convection also contributes to their good cooling. In order to meet the requirements for electrical safety, the boards 5 with LEDs and LED drivers 6, as well as all electronic elements to them are protected by protective plastic shields 7, and aluminum housings 3 and 4 are connected to the protective zero of the electrical network. The luminaire thus proposed is class I for protection against electric shock.

Claims (3)

Claims 1. LED park and street lighting fixture, comprising a horizontally located mounting base with LED boards with LEDs and LED drivers provided with a spherical lampshade, characterized in that two vertical support brackets are formed to the mounting base (1) (2), on which are mounted on top of each other ribbed lower housing (3) and upper housing (4), and to each of them are tightly mounted opposite two of the boards (5) with LEDs and LED drivers (6), the surfaces for mounting the boards (5), respectively to the lower housing (3) and the upper housing (4) are shaped so that the boards (5) are located at an angle of 50 ° to 60 ° to the vertical axis of the luminaire, a The LEDs on each of the two boards (5) mounted on the lower housing (3) are located in an area with a height from the bottom of the base (1) from 1.0 to 1.2 relative to the diameter of the base (1), and the LEDs on both boards (5) mounted to the upper housing (4) are located in an area with a height from the bottom o on the base (1) from 1.5 to 1.7 relative to the diameter of the same base (1). LED park and street luminaire according to claim 1, characterized in that the lower housing (3) and the upper housing (4) mounted on the vertical support brackets (2) to the mounting base (1) are mutually arranged at 90 ° relative to each other. 157 Descriptions to certificates for registration of utility models № 01.1 / 15.01.2019 LED park and street lighting according to claims 1 and 2, characterized in that each of the boards (5) with the LEDs and the LED drivers (6) is mounted to the lower housing (3) and the upper housing (4), respectively. by means of shields (7), with holes formed in them for each LED and covering the standard SMD elements of the LED drivers (6), and in the upper part of the housings (3 and 4) cooling holes (14) are formed.