RU176887U1 - Subway escalator balustrade illuminator - Google Patents

Abstract

The utility model relates to the field of lighting, namely, lighting devices for underground escalators. The technical result is to provide a standard level of illumination at any point on the area of the escalator steps and to reduce the cyclic readaptation of the passenger’s visual apparatus and the glare exerted on the passenger’s visual apparatus. The illuminator of the escalator balustrade contains a tripod with two light modules installed on it with LED light sources and a ceiling that has two zones with different transmittance: a smaller area with a higher transmittance, a large area with a lower transmittance, while the LED light sources have a different luminous flux and are set so that the radiation from the light source with a large luminous flux exits through the area of the ceiling with a high transmittance, and the radiation with a lower luminous flux - through the ceiling area with a lower transmittance. 3 z.p. f-ly, 11 ill.

Description

The utility model relates to the field of lighting engineering, namely to the lighting devices of subway escalators.

The escalator balustrade is one of the main areas of the metro station space, which occupies a special place in the general lighting of the station.

The modern sanitary standards for subway lighting “Sanitary standards for the operation of subways” (SP2.5.1337-03) regulate the following requirements for escalator lighting:

illumination at any point on the plane of the step should be at least 100 lux;

uneven illumination created by light devices should not exceed 1.5: 1.

However, as measurements made at the Moscow metro stations show, the illumination on the steps of the escalators of all stations is much lower than the permissible level (as a rule, it does not exceed 50 lux), and the illumination in front of passengers’s eyes when moving the escalator ranges from 340 to 150 lux when moving down and from 60 to 180 lux when moving upwards, i.e. more than 2 times the acceptable value, which, as already indicated, in accordance with paragraph 3.1.22 of SP2.5.1337-03. N50 is 1.5: 1, and this happens within 5 s, with a total number exceeding 20 pulses per descent / ascent on the escalator.

The analysis shows that the cause of the identified violations is an attempt to solve both problems, namely:

the creation of a sufficiently high illumination on the entire plane of the stairs of the escalator;

comfortable lighting of the escalator tilt space;

using light devices with a single light source of relatively low power.

As a result, the limited power of even a low light source does not allow to obtain the required illumination values on the step, but it is sufficient to create uncomfortable fluctuations in illumination lying on the passenger’s eyes that are caused by a change in the distance between the illuminator and the passenger during the movement of the escalator , the consequence of which is the multiple re-adaptation of the visual apparatus, which is extremely harmful to vision. Moreover, it is obvious that an increase in power leads to blinding of passengers, since the radiation source is located quite close to its visual apparatus.

The solution of these problems in the development of lighting on newly built escalators is possible in various ways, including through the use of new designs of illuminators. It is more difficult to solve these problems when restoring old objects, for example, at old metro stations designed according to old standards and representing at the same time an object of cultural heritage, i.e. at stations that do not allow changing the “historical” appearance of the object, in this case, escalator tilt lights.

The closest in technical essence is the technical solution for lighting the escalator balustrade at the Sretensky Boulevard station (Lighting engineering, 2011, No. 4, p. 4).

This device does not allow to obtain the required illumination standards on the entire plane of the staircase and causes blinding of passengers when approaching the escalator.

The main reason for the manifestation of this effect is the spatial orientation of the LED module emitting a large light flux - it is located parallel to the arch of the escalator tilt, i.e. at an acute angle to the direction of view of the passenger standing on the escalator, while since the radiation of this module propagates at an angle of 120 °, it inevitably falls into the eyes of the passenger.

In addition, with a relatively large angle of escalator tilt, a significant part of the light flux will be directed to a visual apparatus suitable for the passenger escalator, which causes blinding.

The objective of the claimed utility model is to achieve the required standard level of illumination at any point on the area of the escalator step in the absence of cyclic re-adaptation of the passenger’s visual apparatus and the blinding effect on the passenger’s visual apparatus.

The technical result provided by the utility model is to provide a standard level of illumination at any point on the area of the escalator step and to reduce the cyclic re-adaptation of the passenger’s visual apparatus and the blinding effect exerted on the passenger’s visual apparatus.

The task is achieved due to the fact that in the illuminator of the escalator balustrade containing a tripod, with two light modules mounted on it, including light sources, LED light sources, and a ceiling that has two zones with different transmittance - most of which has a lower transmittance milk glass (0.5), from which the ceiling is made of a “historical” design, and the smaller zone has a larger one, close to 1, while the LED light sources have a different light flux and are installed so that radiation from a light source with a large luminous flux exits through a part of the lampshade with a higher transmittance, and radiation with a lower luminous flux - through a part of the lampshade with a lower transmittance.

Private signs are:

- the plafond is made of two parts mechanically interconnected through an adapter.

- the area of the ceiling with a high transmittance is additionally equipped with a diffuser with cylindrical lenses, the generatrix of which lies in a plane parallel to the plane passing through the vertical optical axis of the ceiling.

The technical result is achieved due to the fact that the area of the plafond with a high transmittance ensures the unimpeded projection of radiation from the LED module with a large luminous flux in the corner, which eliminates blinding of passengers, on the arch of the escalator tilt and provides, after reflection from the ceiling arch, standard values of illumination throughout step area. Moreover, due to the fact that the luminous flux of the second light module is minimal, as well as the transmittance of the zone of the ceiling through which it exits, this luminous flux has only a decorative effect and does not affect the visual apparatus of the passenger, i.e. does not cause cyclic readaptation of its visual apparatus.

The essence of the utility model is illustrated by drawings, where:

FIG. 1 shows the design of an illuminator of an escalator balustrade with a ball lamp;

FIG. 2 - design of the illuminator of the escalator balustrade with a ball shade made of two parts;

FIG. 3 - design of the illuminator of the escalator balustrade with a hemispherical shade;

FIG. 4 - design of the illuminator of the escalator balustrade with a hemispherical shade made of two parts;

FIG. 5 - design of the illuminator of the escalator balustrade with a cylindrical ceiling;

FIG. 6 - design of the illuminator of the escalator balustrade with a cylindrical shade made of two parts;

FIG. 7 - design of the illuminator of an escalator balustrade with a shaped lampshade closed by a decorative metal element;

FIG. 8 is a diagram of an illuminator for an escalator balustrade (side view);

FIG. 9 is a working diagram of an illuminator of an escalator balustrade (front view).

FIG. 10 is a section through an illuminator of an escalator balustrade with a diffuser on a lamp with a vertically projecting plane parallel to the direction of movement of the escalator;

FIG. 11 is a section through an illuminator of an escalator balustrade with a diffuser on a ceiling with a vertically projecting plane perpendicular to the direction of movement of the escalator.

The escalator balustrade illuminator contains a tripod 1 with two LED modules 2 and 3 mounted on it, one of which 2 includes an LED light source 4 with a power source 5, connected to an alternating current circuit of the working light, and the second 3 - LED light sources 6, connected to the same power source. In addition, the illuminator contains a ceiling 7, which has two zones 8 and 9 with different transmittance: most of 8 with a low transmittance, less than 9 with a large (for example, the maximum possible), while the LED light sources 4 and 6 have different luminous flux and are set so that the radiation from the light source 4 with a large luminous flux exits through the zone of the ceiling 9 with a high transmittance, and the radiation with a lower luminous flux - through the zone 8 of the ceiling 7 with a lower transmittance. When placing the illuminator on the balustrade, the border between zones 8 and 9 of the ceiling 7 should be placed at a height (N) exceeding the average height of a passenger who is in the same plane as the tripod, perpendicular to the direction of movement of the escalator.

In the particular case shown in FIG. 3, the ceiling 7 is made of two parts 8 and 9, interconnected mechanically through an adapter 10.

To implement lighting on slopes with more than four escalators, i.e. with a large arch radius, the embodiment shown in FIG. 10, in which one zone 9 of the dome 7 or its part with a large transmittance is additionally equipped with a diffuser 11 with cylindrical lenses 12, the forming 13 of which lie in planes parallel to the plane 14 passing through the vertical optical axis 15 of the ceiling 7.

A similar problem of optimizing the shape of the light beam passing through zone 9 of the ceiling 7 can be solved by installing an additional diffuser 11 (Fig. 6) with cylindrical lenses 12, forming 13 of which lie in planes parallel to the plane 14 passing through the vertical optical axis 15 of the ceiling 7 .

The illuminator operates as follows.

When you turn on the LED light sources 4 and 6, the radiation from the LED source 4 with a large luminous flux passes part 9 of the ceiling 7 with a high transmittance, as a result of which almost all of its luminous flux falls on the ceiling arch, from which it is reflected in the direction of the balustrade and stairs of the escalator providing the required standard illumination values on the entire plane of its steps. At the same time, the radiation from the LED source 6 with a lower luminous flux falls on the inner surface of part 8 of the ceiling 7 and, due to the low transmittance of this part 8 of the ceiling 7, is significantly weakened by it, i.e. practically creates a decorative illumination of this part 8 of the ceiling 7, while providing illumination in the eyes of the passenger, the level of which will be significantly lower than the illumination created by the diffusely scattered radiation ceiling from the LED source 4, thereby eliminating the cyclic re-adaptation of the passenger’s visual apparatus when moving the latter relative to the escalator balustrade lamps .

In a design with a ceiling 7 made in the form of a mechanical connection of two parts 8 and 9 through an adapter 10, the illuminator operates as described previously.

In the design of the illuminator, in which zone 9 is provided with a diffuser 11 with cylindrical lenses 12, or this additional diffuser 11 is mounted on the light source 4, the illuminator operates in that the radiation from the light source 4 undergoes additional refraction on the cylindrical lenses, thereby increasing the angle ( ± α) in the plane perpendicular to the direction of movement of the escalator by (Δα), which contributes to the optimal scattering of radiation reflected from the ceiling and to achieve a more comfortable perception.

As a result, this design allows us to solve the problem, providing standard values for the illumination of all areas of the escalator balustrade and the actual moving part of the escalator without cyclic re-adaptation of the passenger’s visual apparatus.

Claims (4)

1. An escalator balustrade illuminator comprising a tripod with two light modules mounted on it with LED light sources and a ceiling, characterized in that the ceiling has two zones with different transmittance: a smaller area with a high transmittance, a large area with a lower transmittance, This LED light sources have a different luminous flux and are installed so that the radiation from the light source with a large luminous flux out through the area of the ceiling with a large coefficient of uskaniya, and radiation with a lower light flux - through the ceiling zone with a smaller transmittance. 2. The illuminator of the escalator balustrade according to claim 1, characterized in that the plafond is made of two parts mechanically connected to each other through an adapter. 3. The illuminator of the escalator balustrade according to claim 1, characterized in that the plafond area with a high transmittance is additionally equipped with a diffuser with cylindrical lenses, the generatrix of which lies in a plane parallel to the plane passing through the vertical optical axis of the plafond. 4. The illuminator of the escalator balustrade according to claim 1, characterized in that the light source with a large luminous flux is additionally equipped with a diffuser with cylindrical lenses, the generatrix of which lies in a plane parallel to the plane passing through the vertical optical axis of the ceiling.

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