RU222352U1 - Street lamp - Google Patents

Abstract

The utility model relates to lighting technology. The claimed street lamp includes a housing, an LED module installed inside the housing with LEDs connected in series to each other on a printed circuit board, a power supply and optical light distribution lenses installed on top of each LED. The device additionally contains an optical diffuser, made monolithic and integral with optical light distribution lenses. In addition, each optical light distribution lens of the optical diffuser has a dome-shaped outer surface and an inner surface along the emission direction of the LED. The technical result of the proposed utility model is to obtain a luminous intensity curve capable of most efficiently distributing light from a light source directly onto the roadway, as well as partially onto the pedestrian path located behind the installation site of the lamp, excluding light from entering the windows of residential buildings. 3 salary f-ly, 6 ill.

Description

Technical field

The utility model relates to lighting technology, namely lighting equipment, and can be used as a stationary lamp for street lighting of roadways and urban pedestrian spaces.

State of the art

From the “State of the Art” a lamp is known that belongs to lighting equipment and can be used as a stationary lamp for street lighting for mass use. It includes at least one housing, the surface of which contains fin plates, an LED module installed inside the housing with LEDs connected to each other, a power supply and protective glass. In this case, the housing is made monolithic and consists of an upper cavity for the power supply and a lower one for the LED modules, having a partition, and there can be at least three LED modules, and inside both parts of the housing there are guides for installing the power supply board, LED boards modules and protective glass, and on the outer surface of the housing there are elements for mounting the luminaire in various operating conditions and guides for connecting the following modules. The lamp body is made of aluminum or its alloys. Optical lenses can be installed on top of each LED depending on the required characteristics. Elements for mounting the lamp are located on both outer sides on the bottom and on top on the top sides of the housing and have a T-shaped profile (see RF patent No. 106335, IPC F21S 13/00, publ. 07/10/2011).

In addition, from the “State of the Art” there is known an LED street lamp mounted on a support, including at least one housing, the surface of which is made in the form of finning plates, an LED module installed inside the housing with LEDs connected in series to each other on a printed circuit board, and power supply. In this case, an optical light distribution lens is installed on top of each LED, and the housing is equipped with fastening connecting elements of the “dovetail” type in the form of a groove on one side of the housing and a tenon on the other, allowing the housings to be connected, increasing the power of the lamp, while additionally installed in the housing protective glass (see RF patent No. 88769, IPC F21S 13/10, publ. November 20, 2009).

The technical problem is the insufficiently efficient use of energy spent on lighting residential areas, which leads to unsatisfactory distribution of light from its source.

Disclosure of the essence of the utility model

The objective of this utility model is to eliminate the shortcomings of the prior art.

The technical result consists in obtaining a luminous intensity curve capable of maximally efficiently distributing light from a light source (LEDs) directly onto the roadway, as well as partially onto the pedestrian path located behind the installation site of the lamp, excluding light from entering the windows of residential buildings.

The technical result is ensured by the fact that the street lamp includes a housing, an LED module installed inside the housing with LEDs connected in series to each other on a printed circuit board, a power supply and optical light distribution lenses installed on top of each LED. The street lamp additionally contains an optical diffuser, made monolithic and integral with optical light distribution lenses. In addition, each light distribution optical lens of the optical diffuser has a dome-shaped outer surface, which is elongated in the middle part, having the shape of a curve of a large radius, while the ends of the dome-shaped surface are curved more sharply with smaller bending radii, the dome-shaped surface continues down to the lower part, made along the outer the perimeter of the optical lens and being straight in the vertical direction. The inner surface of the light distribution lens of the optical diffuser, along the direction of the LED radiation, is formed by curved surfaces smoothly connected to each other, forming a concave cavity and straight surfaces in the lower part of the cavity at the base of the lens. In this case, the wall thickness of the optical lens between the curved surfaces decreases in the longitudinal direction from one edge section of the concave cavity to the opposite.

In accordance with special cases of the utility model, the following design features are provided.

The street lamp is designed to be mounted on a support.

The LEDs are spaced evenly in rows on the printed circuit board on one side of the carrier plate.

The optical diffuser is made of transparent optical polycarbonate.

Brief description of drawings

Fig. 1 - image of the lamp;

Fig. 2 – image of the light distribution optical lens;

Fig. 3 - graph of the distribution of light emitted by the lens of an LED street lamp;

Fig. 4 – image of the lens geometry in cross section;

Fig. 5 - image of the geometry of the lens in a longitudinal section.

Fig. 6 - image of the contour lines of the light flux from the lens of a street lamp.

Implementation of a utility model

The street lamp includes a housing 1, fastening elements in the form of screws 2, ensuring the fixation of all structural elements relative to the housing 1, an LED module installed inside the housing with LEDs connected in series to each other on a printed circuit board, a power supply and optical lenses 3 light distributions installed on top of each LED . The street lamp additionally contains an optical diffuser 4, made monolithic and integral with optical lenses 3 for light distribution. In addition, each optical lens 3 of the light distribution of the optical diffuser 4 has a dome-shaped outer surface, which is elongated in the middle part, having the shape of a large radius curve, while the ends of the dome-shaped surface are curved more sharply with smaller and different bending radii (Fig. 5) . The dome-shaped (convex) surface continues down to the lower part, made along the outer perimeter of the optical lens 3 and being straight in the vertical direction. The inner surface of the light distribution lens of the optical diffuser, along the direction of the LED radiation, along the direction of the LED radiation, is formed by curved surfaces smoothly connected to each other, forming a concave cavity and straight surfaces in the lower part of the cavity at the base of the lens 3. In this case, the wall thickness of the optical lens 3 between curved surfaces decreases in the longitudinal direction (in a longitudinal section, Fig. 5) from one edge section of the concave cavity to the opposite.

The street lamp, due to the design features in the form of an optical diffuser 4, made monolithic and integral with the light distribution optical lenses 3, and the design features of the lenses 3 themselves (Fig. 4 and 5), provides a luminous intensity curve capable of distributing light from 4

light source (LEDs) directly onto the roadway, as well as partially onto the pedestrian path located behind the installation site of the lamp, excluding light from entering the windows of residential buildings.

In fig. 3 shows a graph of the distribution of light emitted by lens 3 of an LED street lamp. According to the graph, the angle of the light beam is about 150 degrees.

In fig. Figure 6 shows contour lines of illumination intensity on a viewing screen located 10 meters in front of the light source. The resulting light spot has an elongated oval shape. When installing a street lighting lamp above the road surface, the light spot will have a length of more than 35 meters along the direction of the road and a width of about 18 meters perpendicular to the direction of the road. At the same time, the roadway will be illuminated as efficiently as possible, as well as partially the pedestrian path located behind the installation site of the lamp.

The LEDs are connected in series and connected by a flexible cable to the power supply, which converts the incoming AC current to DC power, which powers the LEDs and allows the lamp to light up instantly.

The optical light diffuser 4 is made in the form of a panel with transparent optical lenses 3 for each of the LEDs, i.e. each lens is placed on top of one of the LEDs. The optical light diffuser 4 is connected to the housing 1 using screws 2 through a sealed temperature and moisture-resistant gasket. The optical light diffuser 4 with lenses 3 is preferably made of transparent optical polycarbonate.

Preferably, the LED lamp contains LEDs with a power of at least 1 W (permissible current value of at least 350 mA), arranged evenly in rows and with the same pitch on the printed circuit board.

The housing 1 of the street lamp is designed to be mounted on supports and is equipped with fastening means.

The LED lamp works as follows.

When the power is turned on, all LEDs begin to shine simultaneously, creating a luminous flux directed towards the roadway. The power supply converts the incoming AC current to DC power to power the LEDs, allowing the light to light up instantly. Light-emitting diodes connected in series to the power supply via a power supply provide a light flux quite sufficient to illuminate the roadway and part of the pedestrian path located behind the installation site of the lamp, while preventing light from entering the windows of residential buildings. At night, the light spectrum is soft, does not irritate the eyes, and the level of light perception in the field of action of the street lamp is high.

The design of the street lamp allows the various needs of consumers to be optimally met, allowing it to be installed on various supports.

In addition, the design features of the optical diffuser 4 with lenses 3 make it possible to solve the problem of color differences in the light spots of LED street lamps, eliminating the “optical zebra crossing” on the road surface and, therefore, ensuring a uniform distribution of light spots on the road surface.

Claims (4)

1. A street lamp, including a housing, an LED module installed inside the housing with LEDs connected in series to each other on a printed circuit board, a power supply and optical light distribution lenses installed on top of each LED, characterized in that it additionally contains an optical diffuser made monolithic and integral with the optical light distribution lenses, in addition, each optical light distribution lens of the optical diffuser has a dome-shaped outer surface, which is elongated in the middle part, having the shape of a large radius curve, while the ends of the dome-shaped surface are curved more sharply with smaller bending radii, the dome-shaped surface continues downward to the bottom part, made along the outer perimeter of the optical lens and being straight in the vertical direction, and the inner surface of the light distribution lens of the optical diffuser, along the direction of the LED radiation, is formed by curved surfaces smoothly connected to each other, forming a concave cavity and straight surfaces in the lower part cavities at the base of the lens, while the wall thickness of the optical lens between the curved surfaces decreases in the longitudinal direction from one edge section of the concave cavity to the opposite. 2. Street lamp according to claim 1, characterized in that it is designed to be mounted on a support. 3. Street lamp according to claim 1 or 2, characterized in that the LEDs are placed evenly in rows at intervals on the printed circuit board on one side of the carrier plate. 4. Street lamp according to claim 3, characterized in that the optical diffuser is made of transparent optical polycarbonate.