hid arc tube and its manufacturing method, lighting device and lighting system

Abstract

An HID arc tube, a manufacture method thereof, an illumination device and an illumination system are provided. The manufacture method for HID arc tube includes: forming a bulb shell which includes a discharge cavity (5) and outer shells (1) extending from two ends of the discharge cavity (5) respectively, wherein forming a conical hollow location part (11) neighboring the discharge cavity (5) in the outer shell (1). The outer diameter and the inner diameter of the hollow location part (11) decrease synchronously and gradually along the direction to the discharge cavity (5), and the thickness of the tube wall does not change. An electrode location part (9) with a shape of trapezoid and cone is formed, and the electrode location part has a conical surface which can tightly combine with the hollow location part (11), and the electrode location part can be used to fix the electrode (8) and make the electrode (8) enter into the discharge cavity (5) with a predetermined length (L) when the electrode location part (9) is tightly combined with the hollow location part (11). The electrode location part, on which the electrode (8) is fixed, enters into the hollow location part (11), and tight combination between the electrode location part (9) and the hollow location part (11) is realized. The method can make the arc tube have accurate electrode space, improve the vacuum and cold junction temperature, and improve the luminous efficiency, lifetime, and consistency of the product.

Description

technical field [0001] The invention relates to the lighting field, in particular to an HID arc tube and a manufacturing method thereof, a lighting device and a lighting system. Background technique [0002] Such as figure 1 As shown, whether it is a traditional quartz glass tube or a PCA ceramic arc tube developed in recent years in the existing HID arc tube, its manufacturing process usually includes bulb forming, and the formed bulb includes a discharge chamber 5 and a discharge chamber Lead-out tubes 1 at both ends; assemble the first electrode 4 and seal; inject mercury, metal halide pellets and inert gas 3, etc.; assemble the second electrode 6, exhaust and seal, etc. Most of the above processes are carried out in a glove box. The computer screen in the glove box shows that manual electrode positioning is to make a circle 2 on the tail of the guide wire, and rely on the friction between the circle 2 and the inner wall of the lead-out tube 1 to position the electrode....

AI Technical Summary

Problems solved by technology

In particular, the difficulty of this sealing method lies in the fact that during the first stage of sealing, the solder has to go through a certain distance when it is fed into the lead-out tube, and there are molybdenum foils and external lead wires to block it, which is inconvenient to operate.

In addition, in the manufacture of the composite HID arc tube, the positioning of the two electrodes still needs to be realized manually with the cooperation of the camera and the monitor. Therefore, it is difficult to ensure the pole spacing and coaxiality of the two electrodes in the HID arc tube

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