CN201327815Y - Metal halide lamp electric arc tube - Google Patents

Abstract

The utility model relates to the technical field of electric light sources, and provides a metal halide lamp electric arc tube, which is designed aiming to the technical problem of the structure design of similar products, which needs to be improved. The electric arc tube comprises a main tube, a tail tube, an electrode assembly, a glass solder, a ceramic discharge cavity and filling, the design keys are that the outer diametric plane of a transition region is perpendicular to the main tube and the tail tube, the ceramic discharge cavity of the inner diametric plane of the transition region is of a conical shape, a concave convex region is arranged on a connecting position of the inner diametric plane and the tail tube, and metal halide, mercury and buffer gas are filled in the ceramic discharge cavity. The metal halide lamp electric arc tube has reasonable design and simple structure, has higher stability, color rendering and luminous efficiency performance, has the characteristics of longer service life and miniaturization, and is suitable to be assembled in a lighting lamp body and light in fields of show windows, emporiums, vehicle exhibition halls and commercial streets and the like.

Description

The metal halide lamp electric arc tube

Technical field

The utility model relates to the electric light source technology field, is a kind of metal halide lamp electric arc tube.

Background technology

At present, it is the electric arc tube of main material as Metal halogen lamp that metal halide lamp generally adopts with quartz glass, this type of lamp is under the temperature of the course of work, filling luminescent substance in the lamp is metal halide, metal halide and quartzy some chemistry that produces reflect, cause the variation of quartzy character and the interior gas ingredients of electric arc tube to worsen, and cause the seepage of alkali metal ion, cause the loss of luminescent substance and the surplus of halogen, add that quartz itself does not possess heavy-duty service.Therefore, the photochromic stability of quartz metal halide lamp, the sustainment rate of light output, the raising of color rendering index, especially parameter obviously worsens startability, life-span etc., thereby has limited the application of this series lamps.

For overcoming the existing shortcoming of quartz metal halide lamp, some metal halide lamps adopt polycrystalline translucent aluminum oxide ceramic to substitute quartz ampoule.These metal halide lamps can be realized heavy-duty service, the color rendering index of ceramic metal helide lamp is risen to more than 90, luminous efficiency is compared with quartz metal halide lamp and is improved 20%, life-span is enhanced about more than once, be described as the title of " simulated sunlight ", be that illuminating effect is better in the lighting source, the preferable and application prospect of energy-saving efficiency is the high intensity discharge light source preferably.To the research and development and the industrialization of ceramic metal helide lamp, be of great significance to setting up conservation-minded society.But above-mentioned structural design also exists unsatisfactory part.

Summary of the invention

The purpose of this utility model is a kind of metal halide lamp electric arc tube that provides to this area, makes it can solve existing like product structural design and waits improved technical problem, and the utility model is achieved through the following technical solutions.

A kind of metal halide lamp electric arc tube, this electric arc tube comprises the person in charge, tail pipe, electrode assemblie, glass solder, ceramic discharge chamber, filler, be responsible for the tail pipe that two ends are respectively equipped with symmetry, be provided with transition region between the tail pipe and the person in charge, the person in charge, tail pipe and transition region arcing pipe, in the electric arc tube is the ceramic discharge chamber, and its electric arc tube is with high-purity a-Al ₂O ₃Polycrystalline translucent aluminum oxide ceramic is that material calcination is made type, and electrode assemblie inserts in the ceramic discharge chamber by tail pipe, by glass solder with electrode assemblie and tail pipe clearance seal.Its key points in design is that outer diametric plane and the person in charge, the tail pipe of described transition region is vertical, and it is conical that the ceramic discharge chamber of transition region aperture surface is, and the junction of aperture surface and tail pipe is provided with embossed area.A-Al ₂O ₃The polycrystalline translucent aluminum oxide ceramic discharge cavity is the structure of conical band embossed area, has improved cold junction temperature, light efficiency and color rendering index, and dodging boils influences the operate as normal of lamp thereby prevented to produce in the halide inflow tail pipe.The structure of conical band embossed area guarantees sealing-in district uniform distribution of temperature, guarantees hermetic seal and reduces the thermal radiation energy loss as far as possible.Make the temperature gradient of whole electric arc tube more become reasonable, make the lamp stable working state, enclose pair of electrodes at discharge cavity tail pipe two ends, be filled with metal halides such as buffer gas, mercury and luminescent substance, metal lead wire adopts the special glass scolder to realize hermetic seal with pottery, and sealing temperature is at 1400～1600 ℃.The described person in charge, tail pipe and transition region form an integral body behind sintering, be responsible for the symmetrical expression tail pipe and static pressure and dry bag die cast such as all adopt, both will be responsible for after roasting and symmetrical expression tail pipe assembling in different biscuiting temperature, and to adopt interference fit at high temperature to carry out sinter molding be holistic earthenware discharge cavity.The ceramic discharge chamber is to carry out the transition to straight pipe type by taper shape band embossed area to be responsible for such structure, and there is a straight-through aperture at symmetrical expression tail pipe center, is 0.02mm through the 0.8mm tolerance is arranged directly, is used for the installing electrodes assembly.

Fill metal halide, mercury, buffer gas in the described ceramic discharge chamber.Described ceramic metal helide lamp power is 20W～1500W.After the electrode assemblie conduction, the metal halide in the ceramic discharge chamber, mercury, buffer gas and electric current generation exoelectrical reaction, the thermal radiation Conversion of energy is a luminous energy, and illumination is provided.

The outer diametric plane of described transition region and the person in charge, tail pipe or tapered.The junction that aperture surface is provided with tail pipe is provided with embossed area, and the outer diametric plane of its operation principle and transition region and the person in charge, the body that tail pipe is vertical are identical.

The utility model design is comparatively reasonable, simple in structure, have advantages of higher stability, color rendering, light efficiency, useful life is the characteristics of length, miniaturization, be applicable in the assembling illumination lamp body, and the illumination in places such as show window, market, the car show Room, shopping street.

Description of drawings

Fig. 1 is a body profile schematic diagram of the present utility model, has made A-A among the figure and has analysed and observe.

Fig. 2 is the A-A sectional structure schematic diagram of Fig. 1.

Fig. 3 is a structural representation of the present utility model.

Fig. 4 is a ceramic metal helide lamp structural representation of the present utility model.

Above figure number and title: 1, be responsible for 2, tail pipe, 3, transition region, 4, electrode assemblie, 5, glass solder, 6, the ceramic discharge chamber, 7, metal halide, 8, mercury, 9, buffer gas, 10, embossed area.

Embodiment

The utility model is with Metal halogen lamp and a-Al ₂O ₃Polycrystalline translucent aluminum oxide ceramic electric arc tube technology combines, and melts both advantage illumination new light sources.With the CDM70W/TD/942 model is that example is to electric arc tube structure further instruction of the present utility model.

As shown in Figure 4, the electric arc tube of moulding places in the ceramic metal helide lamp, is example with 70W metal halide lamp electric arc tube.As Fig. 1～shown in Figure 3, has the ceramic arc tube that the polycrystalline translucent alumina is made.The inner chamber in its ceramic discharge chamber 6 is that φ 7.6 ± 0.1mm, wall thickness are that φ 0.7 ± 0.1mm, length are that 13.8mm, transition region 3 are 129 ° ± 2 ° for 3.0mm, conicity; The length of tail pipe 2 is 11.0mm, external diameter 2.6mm, aperture 0.8mm; Make the internal diameter of electrode assemblie 4 and tail pipe finish hermetic seal with rare earth oxide glass solder 5, filling metal halides 7 such as Dy, Ho, Tm, TI, Ln in the ceramic discharge chamber is that 3-4mg, mercury 8 are 5mg and Kr ⁸⁵The buffer gas 9 that mixes with Ar is 33Kpa.The electric arc tube length overall of moulding is 65.8mm, and arc length is 7.8mm.

Claims (3)

1, a kind of metal halide lamp electric arc tube, this electric arc tube comprises the person in charge (1), tail pipe (2), electrode assemblie (4), glass solder (5), ceramic discharge chamber (6), filler, be responsible for the tail pipe that two ends are respectively equipped with symmetry, be provided with transition region (3) between the tail pipe and the person in charge, the person in charge, tail pipe and transition region arcing pipe, be the ceramic discharge chamber in the electric arc tube, electrode assemblie is by in the tail pipe insertion ceramic discharge chamber, by glass solder with electrode assemblie and tail pipe clearance seal; The outer diametric plane that it is characterized in that described transition region (3) and the person in charge (1), tail pipe (2) are vertical, and it is conical that the ceramic discharge chamber (6) of transition region aperture surface is, and the junction of aperture surface and tail pipe is provided with embossed area (10).

2, metal halide lamp electric arc tube as claimed in claim 1 is characterized in that filling in the described ceramic discharge chamber (6) metal halide (7), mercury (8), buffer gas (9).

3, metal halide lamp electric arc tube as claimed in claim 1 is characterized in that the outer diametric plane of described transition region (3) and the person in charge (1), tail pipe (2) or tapered.

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