JP2002359058A - Lamp heating system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To further effectively utilize an infrared ray radiated from an infrared lamp, and lengthen the service life of the infrared ray lamp. SOLUTION: A projection 22 projecting toward the infrared ray lamp 11 is formed in the center of a mirror 20. A part extending to both ends from the tip of the projection 22 is respectively formed as reflecting surfaces 21 composed of concave surface parts 23A and 23B, and is constituted so as to introduce the infrared ray 13A radiated to the back face side from the infrared ray lamp 11 to a heating object member 14 placed on the front side of the infrared ray lamp 11 through the side of the infrared ray lamp 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lamp heating apparatus used for a vapor phase growth apparatus, a glass lens molding machine, and the like, and more particularly, to a shape of a mirror disposed on a back side of an infrared lamp.

[0002]

2. Description of the Related Art Conventionally, a lamp heating apparatus of this kind is shown in FIG.
As shown in FIG.
And infrared rays 13 emitted from the infrared lamp 11
Among them, the infrared ray 13A emitted from the infrared lamp 11 to the rear side is guided to the front side of the infrared lamp 11, and is guided to the heated member 14 placed on the front side of the infrared lamp 11.

As shown in FIG. 2, the conventional mirror 12 has a concave surface at the center and a single concave surface as a whole. The infrared light 13A emitted from the infrared The light was condensed, slightly diffused, and further collimated to the front side of the light guide.

[0004]

As described above, the mirror 12 having a single concave surface whose center is depressed as described above is one of the infrared rays 13A radiated from the infrared lamp 11 to the rear side, immediately behind the infrared lamp 11. That is, the infrared rays 13A radiated toward the central portion of the mirror 12 are re-incident on the infrared lamp 11. For this reason, the infrared ray 13A radiated to the rear side cannot be effectively used, and the infrared lamp 11 is excessively heated to shorten its life.

[0005] The present invention solves the above-mentioned problems, and utilizes infrared rays emitted from an infrared lamp more effectively.
It is an object of the present invention to provide a lamp heating device capable of extending the life of an infrared lamp.

[0006]

According to the present invention, there is provided an infrared lamp arranged to face a member to be heated, and an infrared lamp arranged behind the infrared lamp and radiating from the infrared lamp to the rear side. A mirror that reflects the infrared light to the front side of the infrared lamp on which the member to be heated is arranged, wherein the mirror has a projection projecting toward the infrared lamp at the center thereof, and A reflection surface formed of a concave curved surface is formed at a portion extending from the tip of the projection to both ends of the mirror, and is configured to guide infrared rays emitted from the infrared lamp to the rear side to the front side through the side of the infrared lamp. It is characterized by having.

By configuring the mirror as described above, it is possible to heat the member to be heated by guiding most of the infrared rays emitted from the infrared lamp to the rear side to the front side without re-entering the infrared lamp. In addition, the infrared lamp can be effectively utilized, and the infrared lamp is not excessively heated, so that the life of the infrared lamp can be extended.

[0008] If the concave curved surface is formed so as to focus the infrared rays from the mirror toward the front side on the side of the infrared lamp, the same effect as the denser arrangement of the infrared lamps can be obtained. And heating can be performed more uniformly.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIG. Reference numeral 11 denotes an infrared lamp, which is a so-called tubular infrared lamp of a straight tube type or a circular tube type extending substantially perpendicularly to the paper surface of FIG. Reference numeral 14 denotes a plate-like heated member.
It is placed on the upper side (hereinafter, referred to as the front side) of the unit 1 so as to face the tubular infrared lamp 11. 20
Reference numeral denotes a mirror, which is arranged below the infrared lamp 11 in FIG.

The reflection surface 21 of the mirror 20 is subjected to a surface treatment such as gold plating, and a projection 22 projecting toward the infrared lamp 11 is formed at the center of the reflection surface 21. A portion extending from the tip of the projection 22 to the left and right ends of the reflection surface 21 in FIG. 1 is formed so as to have a concave curved surface toward the infrared lamp 11.
An infrared lamp 23B reflects the infrared light 13A radiated from the infrared lamp 11 to the back side and reflects the infrared light 13B to the infrared lamp 11 without re-entering the infrared light 13B.
It is formed so as to be guided upward, that is, to the front side through one side.

Note that the biconcave curved surface portions 23A and 23B are
As shown in (1), most of the reflected infrared light 13B is formed so as to form a focal point F substantially on the side of the infrared lamp 11, and then spread to a size that can irradiate substantially the entire surface of the heated member 14. .

Next, the operation of the present apparatus will be described. The infrared light 13 emitted from the infrared lamp 11 to the front side is
The heated member 14 is directly irradiated. In addition, infrared lamp 1
Infrared light 13A emitted from 1 to the back side
The infrared rays 13B reflected by the concave curved surface portions 23A and 23B constituting the reflection surface 21 of the
After the focal point F is focused on the side of the infrared lamp 11 without re-entering the lens 1, the light is guided to the member to be heated 14.

Therefore, the infrared rays 13A emitted from the infrared lamp 11 to the rear side effectively act on the heating of the member to be heated 14, and do not excessively heat the infrared lamp 11. In addition, most of the reflected infrared light 13B is focused on the side of the infrared lamp 11 and then guided to the heated member 14, so that the infrared lamp also exists at the position of the focus F, The same effect as when the infrared lamps 11 are densely arranged is obtained, and the entire surface of the member to be heated 14 can be more uniformly heated by a smaller number of infrared lamps 11.

In the embodiment described above, the concave curved surface portions 23A and 23B constituting the reflecting surface 21 of the mirror 20 allow most of the reflected infrared light 13B to be reflected by the focal point F on the side of the infrared lamp 11. Although an example in which focusing is performed has been described, the present invention is not limited to this.
The infrared ray 13B that reflects the intensity distribution of the infrared light directly applied to the member to be heated 14 is corrected by the concave portion 23A so that the intensity distribution of the total infrared light applied to the member to be heated 14 becomes more uniform. , 23B, etc., the shape of the concave curved surface portions 23A, 23B can be variously modified according to the heated member 14 to be heated.

[0015]

As described above, according to the present invention, it is possible to effectively utilize infrared rays emitted from an infrared lamp and extend the life of the infrared lamp.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing one embodiment of a lamp heating device according to the present invention.

FIG. 2 is a cross-sectional view showing an example of a conventional lamp heating device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Infrared lamp 12 Mirror 13 Infrared ray 13A Infrared ray radiated to the back side 13B Reflected infrared ray 14 Heated member 20 Mirror 21 Reflecting surface 22 Projection 23A, 23B Concave curved surface portion.

Claims (2)

[Claims] 1. An infrared lamp which is disposed to face a member to be heated, and an infrared lamp which is disposed on a back side of the infrared lamp and emits infrared rays radiated from the infrared lamp to the back side of the infrared lamp on which the member to be heated is disposed. A mirror that has a mirror that reflects toward the front side, wherein the mirror has a projection protruding toward the infrared lamp at the center thereof and a concave surface extending from the tip of the projection to both ends of the mirror. A lamp heating device, wherein a reflecting surface is formed to guide infrared rays emitted from the infrared lamp to the rear side to the front side through the side of the infrared lamp. 2. The lamp according to claim 1, wherein the concave curved surface is formed so as to focus infrared light from a mirror toward a front side on a side of the infrared lamp. Heating equipment.