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Timepiece with a lighting device comprising an ultraviolet led

一种发光二极管、照明装置的技术，应用在钟表件领域，能够解决钟表件总厚度不利、损失大、不能时间的读取最佳化等问题

Inactive Publication Date: 2010-03-03
ETA SA MFG HORLOGERE SUISSE
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This solution requires the use of a specific clock face dedicated to this purpose, which is superimposed on the waveguide, which creates the disadvantage that it is disadvantageous both for the mounting method that should be suitable and for the overall thickness of the clock piece , thus significantly increasing the overall thickness of the watch parts
[0006] In addition, although in this kind of watch, since the ultraviolet light is concentrated on the luminous material, the use of a waveguide can reduce some losses, but the loss is still relatively large, because part of the ultraviolet light that is not converted into visible light is also sent to the watch through the glass of the watch. user eyes
[0007] In any of the above cases, the lighting unit has LEDs which do not optimize the reading of the time in a dark environment

Method used

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  • Timepiece with a lighting device comprising an ultraviolet led
  • Timepiece with a lighting device comprising an ultraviolet led
  • Timepiece with a lighting device comprising an ultraviolet led

Examples

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Embodiment Construction

[0014] The following descriptions are given as examples only, in conjunction with Figure 1-3 especially figure 2 with 3 To describe, in these figures, shown are the main elements of a timepiece necessary for understanding the preferred embodiment of the invention.

[0015] The timepiece 1 described here is a wrist watch comprising a case 2, a glass 3 closing the case, and lighting means 4a, 4b and 4c for illuminating a display device. The watch 1 also includes other elements (not shown) required for its operation, which are not described here but which are well known to those skilled in the art. The display device generally comprises a clock face 5 and indicating elements 6 , such as hands 7 and markings 8 , opposite to or placed on the clock face. In the example shown, three hands 7 are shown to indicate hours, minutes and seconds respectively, although there may of course be any predetermined number of hands 7 comprising the indicating function of the timepiece 1 . The...

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PUM

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Abstract

The invention relates to a timepiece (1) comprising a glass (3) having an inner face and an outer face relative to the timepiece, and a lighting device (4) including at least one ultraviolet or infrared LED (4a) for lighting at least one area (9) comprising fluorescent and / or phosphorescent pigments of an indicator member (7) that can be viewed through the glass, characterised in that said LED isprovided on the periphery of the glass defining a wave guide capable of scattering ultraviolet or infrared light, and in that scattering means (12; 13; 15; 19; 20) for scattering the ultraviolet or infrared light from the glass towards the inside of the timepiece are provided on the ultraviolet or infrared light path.

Description

technical field [0001] In general, the invention relates to a timepiece, such as a wristwatch, with lighting means for illuminating indicating elements such as hands and / or markings. In particular, the invention relates to a lighting device comprising at least one ultraviolet, blue or infrared light-emitting diode in order to illuminate at least one area of ​​an indicator element in which fluorescent and / or phosphorescent pigments are integrated, enhancing the visibility of the indicator element in dark environments . Ultraviolet or blue light-emitting diodes refer to diodes whose emission spectrum mainly covers ultraviolet or blue wavelengths. Such diodes can also emit light in the visible light region. Infrared light-emitting diodes refer to diodes whose emission spectrum mainly covers infrared wavelengths. Background technique [0002] It is known from the prior art that the clock face and hands of a watch are illuminated by an ultraviolet light source. Various areas of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G04G9/00G04B19/32
CPCG04B19/32G04G9/0041G04G9/04
Inventor F·克洛普芬斯坦A·扎尼塔E·弗勒里
Owner ETA SA MFG HORLOGERE SUISSE
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