SU1695032A1 - Searchlight - Google Patents

Abstract

This invention relates to lighting engineering, in particular to lighting devices of the projector type. The purpose of the invention is to improve the lighting and operational parameters, expanding the range of light distribution control. The searchlight has a housing with a reflector installed in it, a protective glass, locks with clamps, a light source with a cartridge mounted on the focusing mechanism. The focusing mechanism is made in the form of a tube of a movable type, consisting of a bracket hinged in the upper part of the body, as well as a bracket, a slider and a clip. The light source is axially fixed in the middle part of the bracket. The lower part of the bracket through the slot in the housing is brought out and locked in a certain position when the clamp, slide and clamp interact. The staple may have a G-shaped shape, and the slot in the bracket may have an arcuate shape. 1 hp ff, 3 ill. (L with

Description

The invention relates to spot-type lighting devices designed to illuminate open areas, architectural monuments, sports facilities and other objects.

The aim of the invention is to improve the lighting and operational parameters, expanding the range of control of light distribution.

FIG. 1 schematically shows a spotlight with a bearing bracket on one hinge; in fig. 2 is a view A of FIG. 1; in fig. 3 - a searchlight with a bearing bracket on two hinges.

The searchlight (Fig. 1 and 2) contains a housing 2 mounted on the lyre 1 with a removable reflector 3, locks 4 with adjustable clamp and a protective glass 5 (or a light filter) assembled directly in the housing 2 through a seal.

Inside the housing 2 along the optical axis of the reflector 3, a light source 6 is mounted, for example, a metal halide gas-discharge lamp of the DRI-250 type with a cartridge 7 connected by current-carrying wires 8 to the terminal block 9. The cartridge 7 and the wires are fixed on the bearing bracket 10. The latter is made in the form a profile plate with stiffening ribs 11 and a flat bent pad 12 and holes in the middle part for fastening the cartridge for screws 13.

The carrier bracket 10 is mounted vertically and pivotally, mounted in the upper part of the housing 2. The hinge is a bracket 14 with a hole on which the bore

h ate about

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using a cylindrical support 15 bearing bracket 10 with a limiter in the form of a coupling or conventional washer 16 with cotter pin 17.

The opposite end of the bearing bracket is installed in a rectangular slot 18, which is made along the generatrix on the bottom of the cylindrical body.

2 and protrudes from the housing adjacent to the G-shaped bracket 19 with a socket 20 of the focusing device. The bracket 19 is fixed outside the housing 2 near the specified slit 18.

A slider 22 is mounted on a portion of a bracket 21 protruding from the housing 10, which is seated in a nest 20 of a focusing device, which is an arc-shaped slot made on an L-shaped bracket 19 aligned with the bracket. Such a design makes it possible to change the angle of inclination of the bracket 10 and source 6 of the light relative to the optical axis of the reflector 3 at a selected angle 0. To fix the slider 22 in the slot of the L-shaped bracket 19 at the selected angle of inclination of the bracket 10, the clamp 23 is used in the form of a nut-ba screwed on the slider rashka, locking bracket 10 on the bracket 19.

To seal the slot 18, made in the housing, the length of which is proportional to the deviation angle of the bracket 10 on the hinge when focusing the spotlight, a flat rubber gasket is used under the cover 24 limiting it, on which also the terminal 9 and the grounding screw of the current supply means are attached.

In the embodiment of the searchlight with a bearing bracket on two hinges (FIG. 3), which is more resistant to mechanical stress, the bearing bracket is made in the form of a V-shaped profile plate 25 with a rigid pull mechanically fixed with it 26 which with a slider and clip is installed in the slot of the focusing device.

The installation of the light source 6 in the searchlight is carried out with the removal of the reflector

3c of the housing 2, in connection with this, and also taking into account the variation of the parameters of the light sources, each subsequent installation of the reflector 3 requires an additional focusing, which is carried out using a focusing device with a bracket 10 (Fig. 1 and 2) or a pull 26 3) and locks 4 with adjustable clamp.

In this case, install the reflector 3 on the housing 2 with the required clamping of the locks 4. Then release the clamp 23 and, turning the bracket 10 with the slider 22 around the hinge within the arc slot on the bracket 19, change the position of the longitudinal axis of the light source 6 relative to the optical axis of the reflector 3 at some angle ©,

thereby shifting the center of the luminous body of the source 6 from the focus in the longitudinal and transverse directions. The final locking of the bracket 10 in the selected position is carried out by the clip 23.

0 Additional sub-focusing with a spatial change in the position of the optical axis of the reflector 3 can be performed with locks 4 with an adjustable clamp. Removing or focusing the center of the light body of the light source b out of focus allows the spatial distribution of the luminous intensity and efficiency of the searchlight to be varied over a wider range compared to known devices by simultaneously combining the lateral and longitudinal displacement of the source during focusing.

Improvement of lighting parameters is also achieved by axial

5 orientation of the light source in the projector with minimal shading of its outlet.

Improved performance related to increased reliability

Claims (1)

0 mounting the light source in the searchlight in a horizontal position along the axis of the searchlight, including when exposed to vibration or shock loads, claims 51. A searchlight, comprising a housing with a reflector and a protective glass in the plane of the exit aperture of the searchlight, a light source with a cartridge mounted on a focusing device in the form of a bracket, 0 brought out through a slot in the lower part of the body, a bracket with a slot, a slider and a clip located outside the body and forming a landing nest of a focusing device, characterized by 5 that, in order to improve the lighting and operational parameters, to expand the range of adjustment of the light distribution, the focusing device bracket is made in the form of a pull-out type, in the middle part of which there is an axially fixed light source, in the upper part of the body there is a bracket with a hole, which includes the upper end of the specified rod with the possibility of a pivotal rotation 5 in the bracket relative to the hole, 2, Searchlight pop. 1, characterized in that the landing slot of the focusing device is made in the form of an L-shaped bracket equipped with an arc-shaped slot. 1417 // /eleven ten. I P Figg Fm.z