Ceramic metal halide lamp connected through quartz flange and preparation method

Abstract

The invention provides a novel structure ceramic metal halide lamp connected through quartz flanges, which comprises an electric arc tube, the electric arc tube is positioned in a quartz tube, two ends of the quartz tube are sealed, the interior of the quartz tube is in a vacuum state, two ends in the quartz tube are respectively provided with a quartz flange, two ends of the electric arc tube are connected through a molybdenum rod, and the molybdenum rod is connected with the quartz flange. And an SFC-15 lamp holder is mounted at the outer end of each quartz flange. The invention further provides a preparation method of the novel structural ceramic metal halide lamp connected through the quartz flange. According to the novel-structure ceramic metal halide lamp connected through the quartz flange, the surface of the quartz tube is not provided with an exhaust port, and the collision air leakage risk is avoided; compared with a traditional double-end metal halide lamp of a press sealing structure, the quartz flange is firmer and more durable, and the lamp holder can bear the weight of more than 10 kg. And the SFC-15 lamp holder and the fixing nut are connected with the lamp, so that the joint is more reliable, and the reliability is obviously improved especially in a vibrating use place.

Description

Technical Field

[0001] The invention belongs to the field of ceramic metal halide lamps and relates to a ceramic metal halide lamp connected via a quartz flange and a preparation method. Background Art

[0002] Ceramic metal halide lamp is a polycrystalline alumina ceramic arc tube shell. This ceramic is a translucent material. In fact, its light transmittance is as high as 96-98%, which exceeds glass and quartz. However, since the linear light transmittance does not exceed 30%, it becomes translucent. This ceramic material can withstand high temperatures of more than 200°C higher than quartz. After being made into an arc tube, the normal operating temperature can be as high as 1200°C. In addition, its thermal conductivity is high, and the temperature distribution of the arc tube itself is relatively uniform. Even the cold end is above 900°C. Therefore, the metal halide filled in it can be fully evaporated. This is the reason why the luminous efficiency and color rendering index of ceramic metal halide lamps are high and stable. The thermal stability and chemical stability of the ceramic bulb shell are very high. It does not react chemically with the material filled in the arc tube, and there is no sodium leakage problem. Therefore, the lamp has stable performance, low light decay and long life.

[0003] Conventional double-ended ceramic metal halide is a ceramic metal halide lamp arc tube and molybdenum rod and molybdenum sheet that are packaged with a UV filter quartz tube by compression sealing. There is a quartz exhaust tube in the middle of the quartz tube, and there will be a convex point after exhausting; the two ends are flat compression surfaces, and the force-bearing effect is not good; the bulb is connected to the lamp through a molybdenum wire, and the fixing effect is not good. Summary of the invention

[0004] 1. Technical problems to be solved: The two ends of the existing ceramic metal halide lamp are flat pressure covers, which have poor force-bearing effect; the bulb is connected to the lamp through a molybdenum wire, which has poor fixing effect.

[0005] 2. Technical solution: In order to solve the above problems, the present invention provides a new structural ceramic metal halide lamp connected by a quartz flange, including an arc tube, wherein the arc tube is located in a quartz tube, the two ends of the quartz 1 are sealed, and the interior is in a vacuum state, a quartz flange is provided at each end of the quartz tube, the two ends of the arc tube are connected by a molybdenum rod, and an SFC-15 lamp holder is installed at the outer end of each quartz flange 2.

[0006] An exhaust pipe is arranged outside the quartz flange.

[0007] A getter is provided between the arc tube and the quartz flange.

[0008] The two quartz flanges are mounted with two SFC-15 lamp holders 4 through lamp mud. The lamp head can bear more than 10kg.

[0009] It also includes a fixing nut, which is installed at the end of the SFC-15 lamp holder 4.

[0010] The quartz flange is in the shape of a solid cylinder.

[0011] The present invention also provides a method for preparing the novel structure ceramic metal halide lamp connected by a quartz flange, comprising the following steps: Step S01: Assemble two quartz flanges and an arc tube.

[0012] Step S02: Place the assembled quartz flange and arc tube assembly into the quartz tube and seal both ends with plugs.

[0013] Step S03: The quartz tube is evacuated to a vacuum state through the vacuum tube connected to the quartz tube, and the vacuum tube is burned and sealed using a high-temperature flame.

[0014] Step S04: The contact part between the quartz flange and the quartz tube is sealed by high-temperature flame melting, and the redundant quartz tube part is removed; the SFC-15 lamp holder and the quartz flange are assembled using lamp mud, and the lamp mud is dried in an oven, and the preparation is completed.

[0015] 3. Beneficial effects: The novel structure ceramic metal halide lamp connected by a quartz flange proposed by the present invention has no exhaust port on the surface of the quartz tube, is more beautiful, and has no risk of collision and leakage; the flange is solid cylindrical quartz, and compared with the double-ended metal halide lamp of the traditional press-sealed structure, the quartz flange is stronger and more durable, and the lamp holder can bear a weight of more than 10kg; it is connected to the lamp by the SFC-15 lamp holder and the fixing nut, and the connection is more reliable, especially in places with vibration, the reliability is significantly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of this patent; Numbers in the figure: 1-quartz tube; 2-quartz flange; 3-arc tube; 4-SFC-15 lamp holder; 5-fixing nut. DETAILED DESCRIPTION

[0017] The present invention is described in detail below with reference to the accompanying drawings and embodiments.

[0018] like Figure 1 As shown, a new type of structural ceramic metal halide lamp connected by a quartz flange includes an arc tube 3, wherein the arc tube 3 is located in a quartz tube 1, the two ends of the quartz tube 1 are sealed, and the interior is in a vacuum state, the two ends of the arc tube 3 are connected by a molybdenum rod, and an SFC-15 lamp holder 4 is installed at the outer end of each quartz flange 2.

[0019] A quartz flange 2 is provided at each end of the quartz tube 1. Compared with the double-ended metal halide lamp with a traditional press-sealed structure, the quartz flange is stronger and more durable.

[0020] In one embodiment, an exhaust pipe is provided outside the quartz flange 2. The exhaust pipe is used to extract the air in the quartz tube 1 to make the quartz tube 1 a vacuum state.

[0021] In one embodiment, a getter is provided between the arc tube 3 and the quartz flange 2. The getter can absorb the impurity gas in the sealed UV filter quartz tube 1 to ensure that the vacuum degree thereof meets the requirements.

[0022] In one embodiment, the two quartz flanges 2 are mounted with two SFC-15 lamp holders 4 through lamp mud.

[0023] In one embodiment, the lamp head can bear more than 10kg In one embodiment, the fixing nut 5 is installed at the end of the SFC-15 lamp holder 4, and the connection is more reliable, especially in places with vibration, the reliability is significantly improved.

[0024] The present invention also provides a method for preparing the novel structure ceramic metal halide lamp connected by a quartz flange, comprising the following steps: Step S01: Assemble two quartz flanges 2 and the arc tube 3.

[0025] Step S02: Put the assembled quartz flange 2 and arc tube 3 into the quartz tube and seal both ends with plugs.

[0026] Step S03: The quartz tube 1 is evacuated to a vacuum state through the vacuum tube connected to the quartz tube 1, and the vacuum tube is burned and sealed using a high-temperature flame.

[0027] In this sealing method, there is no exhaust port on the surface of the quartz tube 1, which is more beautiful and has no risk of collision and leakage. In one embodiment, the quartz flange 2 is a solid cylindrical shape.

[0028] Step S04: Use high-temperature flame to melt and seal the contact part between the quartz flange 2 and the quartz tube 1, and remove the excess quartz tube part; use lamp mud to assemble the SFC-15 lamp holder 4 and the quartz flange 2, and use an oven to dry the lamp mud, and the preparation is completed.

Claims

1. A new type of structural ceramic metal halide lamp connected via a quartz flange, comprising an arc tube (3), wherein the arc tube (3) is located inside a quartz tube (1), and characterized in that: The quartz tube (1) is sealed at both ends and is in a vacuum state inside. A quartz flange (2) is provided at each end of the quartz tube (1). The two ends of the arc tube (3) are connected by a molybdenum rod. An SFC-15 lamp holder (4) is installed at the outer end of each quartz flange (2).

2. The novel structure ceramic metal halide lamp connected by a quartz flange as claimed in claim 1, characterized in that: An exhaust pipe is provided outside the quartz flange (2).

3. The novel structure ceramic metal halide lamp connected by a quartz flange as claimed in claim 1, characterized in that: A getter is provided between the arc tube (3) and the quartz flange (2).

4. The novel structure ceramic metal halide lamp connected by a quartz flange as claimed in claim 1, characterized in that: The two quartz flanges (2) are mounted with two SFC-15 lamp holders (4) via lamp mud.

5. The novel structure ceramic metal halide lamp connected by a quartz flange as claimed in claim 4, characterized in that: The SFC-15 lamp holder (4) can bear a load of more than 10 kg.

6. The novel structure ceramic metal halide lamp connected by a quartz flange as claimed in claim 4, characterized in that: It also includes a fixing nut (5), which is installed at the end of the SFC-15 lamp holder (4).

7. The novel structure ceramic metal halide lamp connected by a quartz flange as claimed in any one of claims 1 to 6, characterized in that: The quartz flange (2) is in the shape of a solid cylinder.

8. A method for preparing a novel structure ceramic metal halide lamp connected by a quartz flange as claimed in any one of claims 1 to 7, characterized in that: The following steps are involved: Step S01: assembling two quartz flanges (2) and an arc tube (3); Step S02: placing the assembled quartz flange (2) and arc tube (3) components into the quartz tube and sealing both ends with plugs; Step S03: evacuating the quartz tube (1) to a vacuum state through the vacuum tube connected to the quartz tube (1), and using a high-temperature flame to burn and seal the vacuum tube; Step S04: The contacting parts of the quartz flange (2) and the quartz tube (1) are sealed by high-temperature flame melting, and the excess quartz tube part is removed; the SFC-15 lamp holder (4) and the quartz flange (2) are assembled using lamp mud, and the lamp mud is dried in an oven, and the preparation is completed.

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