RU185389U1 - EXPOSURE LAMP FOR MOUNTING ON THE BUSBAR - Google Patents

Abstract

The utility model relates to the field of lighting engineering, in particular to a lamp intended for mounting on a busbar, for lighting exhibits at exhibitions, in museums. The technical result achieved by using the claimed utility model is to obtain a light spot without deviations in color reproduction with a monotonous decrease in illumination from the border of the light spot to the periphery of the illuminated surface. The problem is solved in that in the luminaire, which consists of a power supply module with a busbar adapter and an optical module connected by a two-stage hinge assembly, the optical module contains a plane-spherical lens, a film diffuser and a light-emitting element with an LED mounted on a radiator. The light-emitting element moves along the axis of the housing of the optical module along the guides. For this, a blind threaded hole is made in the radiator, with which the screw interacts. The screw rotates in the hole in the transverse traverse mounted on the end of the optical module housing and is equipped with a hand feed handwheel. A surface diffuser film diffuser with an axisymmetric indicatrix, with a diameter equal to the diameter of the lens, is adjacent to the flat side of the lens with a scattering surface. The hinge assembly with intersecting mutually perpendicular axes of rotation contains an intermediate link, made in the form of a lyre, with the axis of rotation of the horizontal hinge coinciding with the cross-sectional diameter of the optical module, and a vertical hinge connects the power supply module and the intermediate link. 1 s.p. f-ly, 4 ill.

Description

Technical field

The utility model relates to the field of lighting engineering, in particular to a luminaire designed for mounting on a busbar, which can be used to illuminate individual objects of exposure at exhibitions, in museums, in shop windows.

State of the art

From the current level of technology exposure lamps are known. So known track lamp (US patent US 2015184841 (A1), F21S 8/00, 07/02/2015) containing a busbar, power supply module, optical module, while the power supply module is installed with the possibility of longitudinal movement along the busbar and provides electrical and mechanical connection with him, and the optical module is connected to the power supply module by a two-stage hinged assembly with intersecting mutually perpendicular axes of rotation. The hinge assembly consists of an intermediate link, a vertical hinge connecting the housing of the power supply module and the intermediate link, and a horizontal hinge connecting the intermediate link and the optical module. The optical module consists of a housing, an optical system and a light source. This lamp provides a "targeting" of the light beam to the object, but does not imply regulation of the diameter of the light spot, which provides "accent" lighting of the object. This limits the possibilities of the lighting installation.

In addition, a lamp is known that contains adjustable lighting modules (RF patent RU 2449212 C2, F21V 14/02, 04/27/2012). The lamp comprises a housing and one or more optical modules pivotally mounted in the housing. Each of the optical modules contains an LED light source, a heat sink, and is rotatable in the housing of the lighting module. In turn, the housing of the lighting module is installed in the lamp with the possibility of rotation around an axis perpendicular to the axis of rotation of the optical module. The technical result is the provision of the ability to adjust lighting. But to form the required size of the lighting spot, several lighting modules are used, which greatly complicates both the lighting system as a whole and its adjustment. In addition, an adjustable exposure lamp with a fixed housing is known (US patent US 6200011 (B1), F21V 8/00 03/13/2001). The patent describes a luminaire built into the ceiling, which is characterized by the following main elements: a housing rotatably relative to the vertical axis, a lens mounted in the optical window of the housing, a radiating element mounted in the housing rotatably relative to the horizontal axis and the possibility of longitudinal movement along the axis of the housing relative to the lens of the light source, so that changing the position of the light source allows you to adjust the transverse size of the output beam and its governing body. This lamp is characterized by a limited range of variation of the angle of deviation of the optical axis from the vertical axis and the dependence of the shape and area of the light opening of the optical system on this angle when the light source is in the zone of the focal plane of the lens. Introduction to the optical system of the lens leads to chromatic aberration, the appearance of color bands on the illuminated object. The use of a reflector - to the appearance of a ring zone of non-zero illumination with a sharp decrease to zero at the border of the zone, i.e. a decrease in the radiance function of light is not strictly monotonic. This limits the operational capabilities of the product and reduces the quality of lighting.

Closest to the claimed technical solution is a track lamp with remote control (patent of the People's Republic of China 106439605 A, F21 8/00, 02.22.2017). The luminaire consists of a power supply module, an adapter that provides electrical and mechanical connection to the track, an optical module pivotally coupled to the power supply module, consisting of a housing, a lens mounted in the window of the optical module, and a radiating element, which is placed with the possibility of longitudinal movement inside the housing along internal guides, while the radiating element consists of an LED light source and a cylindrical radiator, and the LED source is mounted on the end of the radiator with Orons of the window of the optical module, and on the other side of the radiator a blind threaded hole is made, with which the screw interacts. The use of lens optics in exposure lamps for illuminating objects located at a distance of less than 5 meters requires the use of lenses with a focal length of 40 to 60 mm. These lenses are characterized by significant chromatic aberration, which appears along the contour of the light spot and in the center of it when the radiating element is in the focal plane or near it. In addition, the light spot when the light source is in the focal plane is characterized by a significant difference in illumination at its border, causing visual discomfort of the brightness contrast.

Utility Model Disclosure

The technical problem, which is aimed by the claimed technical solution, is to overcome the disadvantages inherent in analogues and prototype and is aimed at achieving the required quality of the light spot on the illuminated object in terms of illumination and color reproduction.

Exposure lighting is complementary to general lighting and its quality can be estimated by breaking its parameters into groups.

A group of lighting quality parameters according to characteristics related to the assessment of the surface of the exposed object

A group of lighting quality parameters according to the characteristics related to the identification of the shape of the exposed object.

A group of lighting quality parameters related to the field of psychophysiology of visual sensations.

Under the decorative properties of surface lighting understand the properties that ensure its aesthetic perception. The decorative properties of the surface are characterized by color, gloss, texture. For each of these characteristics, a formalized group of parameters can be defined.

An impairment of the color of illumination of an object is caused by the appearance of colored lines of chromatic aberration caused by the presence of a lens. For LED fixtures, this is a wide bright yellow stripe located around the perimeter of the light spot and along the perimeter of the image of the LED assembly when it is in the area of the focal plane of the lens. Placing a film diffuser with volumetric scattering in the light window of the luminaire only reduces the contrast of line transitions. Placing a film diffuser with surface scattering with an axisymmetric scattering indicatrix between the lens and the LED solves this problem: the effect of chromatic aberration on the illumination of the object is not detected ..

Under the informative properties of lighting, providing the formation of a three-dimensional image, we mean the provision of such a lighting structure that corresponds to the author’s intention to perceive this object as a single or as an element of a composition. It sets:

- The direction of the light flux for the formation of the main frontal view for the observer.

- Expressive identification of the exposed object against the background of background objects in terms of illumination and details,

- The presence of sharp and deep shadows on the object or vice versa, surface flashing with the loss of volume accents,

- The absence of unnatural shadows that distort the idea of the subject, caused by the use of several directed sources,

- The uniformity of lighting in the exposure area in the presence of flat elements in the object.

The use of a film diffuser with surface scattering with an axisymmetric scattering indicatrix eliminates the annular zone of nonzero illumination with a sharp decrease at the boundary. As a result, the cross influence of two adjacent lamps on each other is excluded. There are no ring bands of illumination on the periphery, causing unnatural shadows on the neighboring object.

Of the quality parameters of lighting associated with the psychophysiology of visual sensations, only those that can be influenced using the proposed technical solution are selected.

Brightness contrast. Mutual lateral inhibition of visual neurons causes luminance contrast. An apparent increase in the brightness difference appears at the boundary of surfaces of different illumination. This effect, the Mach effect, underlines the contours, i.e. two additional lines are felt at the border of the bright light field and the darker surface (an even brighter line at the border of the bright field and a very dark line at the border of the dark surface). To exclude the influence of this phenomenon on, it is necessary to prevent the formation of borders with a sharp difference in illumination.

Such boundaries arise when using lamps with a light intensity curve of type G (deep) with a hood. Placing a film diffuser with surface scattering with an axisymmetric scattering indicatrix allows one to form a smooth, strictly monotonic transition of illumination from the edge of the beam to the periphery of the illuminated region., Which attenuates the brightness contrast.

The technical result achieved by using the claimed utility model is to obtain a light spot without deviations in color reproduction with a monotonous decrease in illumination from the border of the light spot to the periphery of the illuminated surface.

This problem is solved due to the fact that in the exposure lamp for mounting on a busbar, consisting of a power supply module, an adapter that provides electrical and mechanical connection to the busbar, an optical module, consisting of a housing, a flat-spherical lens mounted in the window of the optical module, and a light-emitting element , which is placed with the possibility of longitudinal movement inside the housing along the guides, while the light-emitting element consists of an LED light source and a cylindrical beam the LED, and the LED light source is mounted on the end of the radiator from the side of the optical window of the optical module, and on the other side of the radiator there is a blind threaded hole with which the screw interacts according to the technical solution, the LED module is connected to the power supply module by a two-stage hinged assembly with intersecting mutually perpendicular axes of rotation . In this case, the hinge assembly consists of an intermediate link, a vertical hinge connecting the casing of the power supply module and the intermediate link, and a horizontal hinge connecting the intermediate link and the optical module. The screw is mounted with the possibility of rotation on the transverse traverse mounted on the end of the optical module housing, and is equipped with a hand feed handwheel. A surface diffuser film diffuser with an axisymmetric scattering indicatrix with a diameter equal to the diameter of the lens adjoins the flat side of the lens, while the film diffuser is installed by the scattering surface toward the lens. The intermediate link can be made in the form of a lyre with the axis of rotation of the horizontal hinge lying in the diametrical plane of the optical module.

Brief Description of the Drawings

The invention is illustrated by drawings, which depict:

In FIG. 1 shows a view of the lamp in frontal perspective view (the power cord of the LED is not conventionally shown);

In FIG. 2 shows a view of a luminaire with a cross-section by the frontal plane (the power cord of the LED is not conventionally shown);

In FIG. Figure 3 presents the results of field simulation of the use of a film diffuser with surface scattering to suppress chromatic aberration. In the left photo, the light spot of the LED lamp with lens optics is fixed when the LED assembly is in the focal plane. There is a contrast highlighting of individual LEDs in the assembly on a yellow background caused by chromatic aberration. In the right photo, a film diffuser with surface scattering and a symmetric indicatrix is installed in the lamp. Chromatic aberration is not detected (see also the color illustration Color Shifts in Volumetric Diffusers: [electronic resource] Brightview Technologies USA, Durham, 2018. URL: http://www.brightviewtechnologies.com/data/StreamFile.aspx?loc=cb&file = 04032015091212_Color-Mixing-Information.pdf (Date accessed: 01/01/2018)).

In FIG. Figure 4 presents the results of field modeling of the use of a film diffuser with surface scattering to suppress peripheral light bands and the boundaries of luminance contrast. The left photo shows the light spot of the LED lamp with an annular zone of non-zero illumination, followed by a sharp decrease in illumination to zero at the border of the zone, i.e. the decrease in the function of illumination along the radius is not strictly monotonic. (LED assembly outside the focal plane). Below is a graph of the light intensity curve of this lamp. The central photo shows the light spot of the LED lamp with a sharp decrease in illumination to zero, i.e. with a border of luminance contrast, with a curve of the luminous intensity curve corresponding to this optical system. The right photo with its graph of the luminous intensity curve confirms that the placement of a film diffuser with surface scattering with an axisymmetric scattering indicatrix allows the formation of a smooth strictly monotonous transition of illumination from the edge of the beam to the periphery of the illuminated region. (The areas of influence in the photographs and graphs are indicated by arrows.)

The positions in the drawings correspond to the following components and parts:

1. Power supply module

2. Optical module

3. The adapter

4. Power Module Housing

5. DC source

6. Potentiometer

7. Lira

8. Hollow bolt

9. Coaxial bolt

10. The housing of the optical module

11. Light emitting element

12. Prismatic guide

13. Lens

14. Film diffuser

15. The mechanism of the longitudinal movement of the light emitting element

16. Radiator

17. LED light source

18. Connector

19. Electric cable

20. Adjusting screw

21. Traverse

22. Lens hood

Utility Model Implementation

The inventive device is an exposition lamp for mounting on a busbar, which can be used to illuminate individual items of the exhibition at exhibitions, in museums, in shop windows. The luminaire includes a power supply module 1 and an optical module 2. The power supply module provides, using an adapter 3, an electrical and mechanical connection to the busbar. It consists of a housing 4, inside of which an adjustable direct current source 5 and a potentiometer 6, which is an element for adjusting the output characteristics of the current source, are placed. A two-stage hinge is mounted on the housing of the power supply module connecting the power supply module 1 and the optical module 2. The hinge is made in the form of a lyre 7, which is fixed at its upper point on the lower wall of the power supply module housing using a hollow bolt 8 that can be rotated about a vertical axis (first axis hinge rotation). The rotation of the optical module around the horizontal axis, which is the second axis of the two-stage hinge, is provided by two coaxial bolts 9, which connect the holes at the ends of the lyre with holes diametrically located on the cylindrical surface of the optical module. The deviation angle of the optical module from the vertical axis is 90 degrees. The optical module consists of a housing 10, a light-emitting element 11, placed inside it with the possibility of movement along the axis of the housing along prismatic guides 12, which are mounted on the inner surface of the housing, a flat-spherical lens 13, a film diffuser 14 and a longitudinal movement mechanism of the light-emitting element 15. The light-emitting element consists of from a cylindrical radiator 16, an LED light source 17 installed in the connector 18 at the end of the radiator. The radiator is made of a heat-conducting material, for example, an aluminum alloy, and has a ribbing longitudinal along its entire length. An electric cable 19 is connected through the hollow bolt 8, connecting the direct current source 5 and the LED light source 17. At the end of the radiator 16, opposite to the one on which the LED is mounted, a blind threaded hole is made, interacting with the adjusting screw 20 mounted on the traverse 21 with the possibility rotation. The traverse is mounted on the housing 10 in its end plane opposite the light window. A threaded hole, a screw and a traverse are parts of the mechanism for the longitudinal movement of the light emitting element 15 relative to the lens 13. The film diffuser 14 is adjacent to the flat side of a plane-spherical lens. Both parts are mounted in an optical window and are pressed by a hood 22. The film diffuser with surface scattering with an axisymmetric indicatrix is a film with a regular surface microstructure. The film diffuser is mounted by the scattering surface towards the lens.

The inventive device operates as follows.

The luminaire is installed in the busbar near the illuminated object, so that the directed beam of light does not cause deep in the difference in illumination or large in area shaded parts of the object of exposure. By rotating the adjusting screw 20, the light emitting element 11 is moved to its extreme rear position. In this case, the LED light source is placed in the focal plane, and the light spot has a minimum diameter. By rotating the optical module 2 around the vertical and horizontal axis, the center of the light spot is aligned with the "center" of the illuminated object. Turning the adjusting screw sets the required exposure lighting area. By turning the knob of the potentiometer 6, the required illumination of the central point of the object is set.

Concrete example

The exposure lamp of the claimed design is made. Overall dimensions of the lamp 190 × 80 × 190 mm. The housing of the power supply module has dimensions of 135 × 84 × 47 mm and is equipped with an adapter that provides the connection of the lamp to the busbar for lighting systems Euro-DIN class 1 according to GOST60570-99. The optical module has a diameter of 80 mm and a length of 120 mm. The two-stage hinge, using the lyre as an intermediate link, ensures that the optical module rotates around a vertical axis by an angle of 320 degrees and deviates it from a vertical axis by an angle of 110 degrees. The luminaire uses a current source, which, when regulated by a potentiometer, provides a stabilized current value of 100 to 300 mA. The optical module uses LED assemblies with a power of 13 to 20 watts. They provide a maximum value of luminous flux from 1300 to 2700 lm. Regulation of the luminous flux using a potentiometer located in the housing allows to reduce the luminous flux to one tenth of its maximum value. The luminaire uses a flat-spherical lens made of optical silicate glass with a focal length of 40 mm. The LED assembly type COB (chip on board) is located on the end of the radiator from extruded aluminum profile. This light-emitting element moves along the axis of the optical module along two prismatic guides. The longitudinal movement mechanism consists of a nut pressed into the radiator from the opposite LED assembly of the side, a screw equipped with a handwheel, and a crosshead fixed to the end of the optical module with an opening in which the screw rotates. In the screw pair, a two-way trapezoidal thread is used, which ensures the movement of the light-emitting element by 40 millimeters in seven rotations of the screw.

An MPR-10 type surface diffuser film diffuser adjacent to the flat side of the lens has a scattering angle of 15 to 30 degrees (manufacturer see LED Diffuser Products: [electronic resource] Brightview Technologies USA, Durham, 2018.

URL: http.//www.brightviewtechnologies.com/products/led-diffusers/led-diffuser-products/page.aspx?id=1102 (Date accessed: 08/01/2018)). The film diffuser is mounted with the structured side towards the lens. The lens and film diffuser are fixed with a 30 mm high hood.

By moving the light emitting element from the front to the rear end position, the diameter of the light spot is changed to 600 to 1800 mm on the illuminated surface spaced from the light window of the optical unit at a distance of 1500 mm.

Claims (2)

1. Exposure lamp for mounting on a busbar trunking, consisting of a power supply module, an adapter that provides electrical and mechanical connection to the busbar trunking, an optical module, consisting of a housing, a flat-spherical lens mounted in the window of the optical module, and a light-emitting element that is placed with the possibility of longitudinal movement inside the housing along the guides, while the light-emitting element consists of an LED light source and a cylindrical radiator, and the LED light source behind replen at the end of the radiator from the side of the optical window of the optical module, while on the other side of the radiator there is a blind threaded hole with which a screw interacts, characterized in that the LED module is connected to the power supply module by a two-stage hinged assembly with intersecting mutually perpendicular axes of rotation, while the hinged the assembly consists of an intermediate link, a vertical hinge connecting the housing of the power supply module and the intermediate link, and a horizontal hinge connecting the industrial the connecting link and the optical module, and the screw is mounted rotatably on the transverse traverse mounted on the end of the optical module housing and is equipped with a hand feed handwheel, while the film diffuser with surface scattering with an axisymmetric scattering indicatrix with a diameter equal to the diameter adjoins the flat side of the lens the lens, while the film diffuser is installed by the scattering surface in the direction of the lens. 2. The lamp according to claim 1, characterized in that the intermediate link can be made in the form of a lyre with an axis of rotation of the horizontal hinge matching the diameter of the cross section of the housing of the optical module.

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