An ultra-high pressure mercury lamp electrode and an ultra-high pressure mercury lamp

Abstract

The invention provides an ultrahigh-voltage mercury lamp electrode and an ultrahigh-voltage mercury lamp. The ultrahigh-voltage mercury lamp electrode comprises an electrode rod and metal coils, the metal coils are wound around the far end of the electrode rod to form a winding, and winding gaps of the metal coils are filled with heat-conducting powder. By filling metal powder in the winding gaps, heat conductivity between each two adjacent coils can be improved substantially. The ultrahigh-voltage mercury lamp comprises a lamp bulb and a pair of electrodes oppositely arranged in the lamp bulb, and the far ends are close to each other. By adding the heat-conducting powder, the electrode is enabled to be stable in state, so that brightness and uniformity of the lamp bulb are improved, and the glittering problem is reduced.

Description

technical field [0001] The invention relates to an electrode of an ultra-high pressure mercury lamp and an ultra-high pressure mercury lamp. Background technique [0002] In recent years, a light source device in which an ultra-high pressure mercury lamp is combined with a reflector has been widely used as a light source for a projection device. The ultra-high pressure mercury lamp is installed at the focal point of the parabolic reflector or ellipsoid reflector of the light reflector to form an integral high-brightness light source. The light source can be used in projection technology fields such as multimedia projectors, liquid crystal rear projection display systems, projectors of DLP digital light output systems, and the like. [0003] The projection light source needs to be close to the point light source in order to ensure that the projection device provides sufficient brightness on the screen. Projection devices therefore mainly use short-arc discharges. However, ...

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Problems solved by technology

In the case where the electrode rod and coil radius are the same, the part of the motor coil that is not sufficiently melted will exist in the molten bead at the distal end of the electrode, see Figure 4 , when the distal end of the electrode wears away with the passage of lamp driving time, the unmelted electrode coil part inside the convex circle is gradually exposed, and the temperature distribution of the electrode in the molten convex circle is uneven, making the discharge environment in the process of driving the lamp Unstable discharge, uneven distribution of light source brightness, flickering

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