DE20012815U1 - Tail light with LED insert - Google Patents

Description

Description

Tail light with LED - use as light source

Previous designs of tail lights use incandescent lamps (24V, 40W) as their light source.

A minimum illuminance of .15 cd is required for the luminaires.

They essentially consist of the housing, a reflector (7) in front of which the light source is located and an openable housing cover (8) with a red cover plate (9).

The lighting sources in the form of light bulbs have a limited technical lifespan of approx. 1.5 years, which is due to their sensitivity to mechanical shocks, for example.

This results in a high time expenditure for the replacement. In addition, there is an increased risk for train operation if the bulb fails, as the train tail light will then not

is no longer perceptible as such. ^&Lgr; .

The only solution here is to use modern light sources that have significantly better properties.

Special Lights Würzen GmbH

formerly Saxon Bronzeware Factory

- founded in 1862 -

Representative lights Rail vehicle lights Ship lights Ironwork

problem

The invention specified in claim 1 is based on the problem of creating a train tail light which has an identical external appearance to tail lights produced and used to date, but which, by creating a new light source, increases safety in rail traffic and reduces maintenance costs and energy consumption. The light source to be created today should be able to be retrofitted to existing train tail lights without any special effort.

Solution

The problem is solved with the features listed in claim 1.

Benefits achieved

The invention of the new type of tail light has opened up a new dimension in terms of functionality and thus traffic safety in this area. The LED unit used is not subject to the risk of total failure, as if one or more sectors fail, the others continue to operate independently. Due to the high light intensity, which does not cause glare due to the special combination of white and red LEDs, sufficient visibility is still guaranteed even if 60% of the LEDs fail. The comparatively very long service life of up to 100,000 hours means that the maintenance period is increased by 7.5 times (11.5 years). The tail light developed is insensitive to vibrations.
Compared to the tail lights previously used, a significant energy saving of 33.5 W per light was achieved. This corresponds to a reduction of 80%.

The LED unit is designed in such a way that existing tail lights can be replaced with incandescent lamps with minimal effort using a specially developed adapter cable for connection to the existing bulb socket (3).

Special Lights Würzen GmbH

formerly Saxon Bronzeware Factory

■ founded in 1862 -

Representative lights Rail vehicle lights Ship lights
Ironwork

An embodiment of the invention is explained with reference to Figures 1 to 3:
Figure 1 shows the front view of the opened tail light with built-in LED unit (l). This also shows the arrangement of the white (4) and red (5) LEDs.
Figures 2 and 3 show the tail light with LED unit in side view. Figure 2 shows the new development and Figure 3 shows the retrofit variant derived from it. The LED unit is attached (2) to the attachment points of the existing reflector. The electrical connection in the socket (3) of the existing light source is made quickly and easily using an adapter cable (6).

Claims (1)

1. Tail light with LED insert ( 1 ) as light source, whereby the LED insert - has a diameter of 185 mm and is equipped with 53 red ( 5 ) and 60 white ( 4 ) LEDs, which are arranged centrally behind a red cover plate. - is divided into several independently functioning segments. - electrical connection values of 16-32 V and 6.3 W. - produces a luminous intensity of more than 80 cd. - can be retrofitted into existing tail lights in exchange for the previous bulbs.