JP2003297298A - Lamp with base and lamp-fitting structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lamp-fitting structure that a base is not damaged even when a rotating load is applied to a lamp in a state that a lamp with base has been engaged and fixed to a lamp holder, and a radiating direction of light can be changed by changing a fitting angle around a bulb axis of the lamp. <P>SOLUTION: For the lamp with base having a filament 2 along a bulb axis within a tubular light-emitting tube 1 and fitted with a ceramic base 3 at an end thereof, the base 3 has a fitting portion 31 for supporting and fixing the lamp with base to a device, an outer periphery 310 thereof has a plurality of cutouts 32 in a state recessed toward a bulb axis X, and each of the cutouts 32 extends in parallel with the bulb axis X and is in the form of an arc in a section crossing at right angles to the bulb axis. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a lamp with a base used in industrial heating fields such as paint drying and resin molding,
The present invention relates to a lamp engaging structure for fixing the lamp with a base to a device.

[0002]

2. Description of the Related Art Conventionally, heating is performed by using light in drying paint for automobiles and molding plastics for PET bottles, and an incandescent lamp having a filament in an arc tube as a light source for emitting light (hereinafter, simply (Also called a lamp) is used.

FIG. 5 is a cross-sectional explanatory view of a heating device using an incandescent lamp. A lamp a is a tube-shaped arc tube 1 in which a filament 2 is arranged.
The lamp a of the book is used. In the lamp a, the light reflection film 4 is formed on the surface of the arc tube 1, and the light emitted from the filament 2 is reflected by the light reflection film 4 to efficiently use the light and The directivity of the light is provided so that only the processed material W is irradiated with the light, and the light is not irradiated to other portions.

FIG. 6 is an explanatory view for explaining an engaging structure in which a lamp is fixed to a lamp holder fixed to the apparatus. FIG. 6A is a diagram before the lamp is fixed.
(B) is a diagram after the lamp is fixed. In the figure, lamp a
A filament 2 is arranged in a tube-shaped arc tube 1, and ceramic bases 6 are attached to both ends of the arc tube 1. Then, from the outer circumference 60 to the base 6,
A protruding portion 61 is formed so as to protrude along the tube axis X direction so that the side surface 610 is linear.

The lamp holder 5 is formed with a through hole 51 through which the base 6 including the protrusion 61 is inserted, and the through hole 51 has the same shape as the cross section of the base 6 in the direction orthogonal to the tube axis X. Therefore, the projection portion 61 of the base 6 is shaped to pass through. In this way, the base 6 including the protrusion 61 and the through hole 51 of the lamp holder 5 are engaged with each other, so that the lamp a is supported and fixed by the lamp holder 5, and the lamp a is prevented from rotating.

As described above, when the lamp a is supported and fixed by the lamp holder 5, the lamp a does not rotate and the position is specified. Therefore, the direction of the light toward the workpiece W is previously set.
It can be determined by the formation region of the light reflection film 4 formed on the surface of the arc tube.

[0007]

However, the object W to be processed shown in FIG. 5 also has a similar shape and size, and it is necessary to change the direction of the light emitted from the lamp a by the object W to be processed. In this case, the lamp engaging structure shown in FIG. 6B has a problem that the lamp a cannot be rotated around the tube axis which is the direction indicated by the arrow.

Further, as shown in FIG. 6A, the side surface 610 of the protrusion 61 of the base 6 is linear and protrudes from the outer periphery 60 of the base 6, so that the connecting portion P has an acute angle. Therefore, as shown in FIG. 6B, when a load that rotates around the tube axis in the arrow direction is applied to the lamp a, the connection part P may be cracked or the projection 61 may be broken. was there.

Therefore, the present invention has been made in view of the above problems, and in the state where the lamp with the base is engaged with and fixed to the lamp holder, a load for rotating about the tube axis of the lamp is applied. The purpose is to provide a lamp with a base that does not damage the base, and with the lamp with a base engaged with the lamp holder, rotate the lamp around the tube axis and change the mounting angle around the tube axis, It is an object of the present invention to provide a lamp engaging structure capable of changing a radiation direction.

[0010]

In order to solve the above-mentioned problems, the run with a base according to claim 1 has a filament inside the tube-shaped arc tube along the tube axis, and the end of the arc-tube. In a lamp with a base in which a ceramic base is attached to the portion, the base has an engaging portion for supporting and fixing the lamp with the base to a device, and the engaging portion has a tube with an outer periphery. It has a plurality of cutout portions that are recessed toward the axis, and the cutout portions extend in parallel to the tube axis and have a circular arc-shaped cross section orthogonal to the tube axis. Is characterized by.

According to a second aspect of the present invention, there is provided a lamp engaging composition for a lamp with a base, wherein a filament is provided inside a tubular arc tube along a tube axis, and a ceramic base is attached to an end of the arc tube. In the lamp engaging structure that is supported and fixed to a lamp holder fixed to the device, the base of the lamp with a base has an engaging portion that is engaged with the lamp holder, and the engaging portion is The outer periphery has a plurality of cutout portions that are recessed toward the pipe axis, and the cutout portions extend in parallel to the pipe axis and have a circular arc-shaped cross section orthogonal to the pipe axis. The lamp holder has a stopper for engaging a notch formed in the base of the lamp with a base to adjust a fixed angle around the tube axis of the lamp with a base. Part is the engagement There wherein the engaging said notch adjacent changing the position by its own elastic force when rotating the tube axis.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 is an explanatory diagram of a lamp with a base according to the present invention. FIG. 2A is a YY cross-sectional view in the direction orthogonal to the tube axis in FIG. In the lamp with a base according to the present invention, a filament 2 is arranged inside a tubular arc tube 1 along the tube axis, and a ceramic base 3 is attached to an end of the arc tube 1.

The base 3 is made of ceramic so as not to be deteriorated by heat from the filament, and has an engaging portion 31 for fixing the lamp with a base to a device described later. The outer circumference 310 has a plurality of notches 32 that are recessed toward the tube axis X.
In the case of this embodiment, eleven notch portions 32 are formed. In addition, in FIG. 1, the cutout portion 32 corresponds to the engagement portion 31.
Although they are formed on the outer circumference 310 at equal intervals, it is not necessary to form them on the entire outer circumference, and two or more notches 32 are sufficient.

The notch 32 extends parallel to the tube axis X and, as shown in FIG. 2A, the tube axis X.
The cross-sectional shape orthogonal to is arcuate. Figure 2
(B) is a partially enlarged view for explaining the cross-sectional shape of the cutout portion 32, and the portion shown by the dotted line in the figure, that is, the side surface 320 has an arc shape. Note that FIG.
As shown in (c), the cutout portion 320 indicated by the dotted line in the figure.
It also includes a shape in which the bottom portion in the tube axis X direction is curved.

A light reflecting film 4 for reflecting the light emitted from the filament in a predetermined direction is formed on the surface of the arc tube 1.

FIG. 3 is a view showing a lamp engaging structure of the present invention, and FIG. 3 (a) is a view before engaging the lamp.
(B) is a diagram after the lamp is engaged. In the figure, 5 is a lamp holder, which is fixed to a device (not shown). And, the lamp holder 5 is the engaging portion 3 of the lamp with the base.
It has a through hole 51 through which 1 is inserted.

Then, as shown in FIG. 3B, the engaging portion 31 of the base 3 is inserted into the through hole 51 of the lamp holder 5, and at this time, the stopper portion 52 provided in the lamp holder 5 is notched. It is adapted to engage the portion 32. By thus inserting the engaging portion 31 into the through hole 51, the lamp with a base is supported and fixed to the device, and the stopper 52 is engaged with the cutout portion 32, whereby the lamp with a base is attached. Is to prevent the rotation around the tube axis. Although not shown in the drawing, the base on the opposite side is also similarly supported and fixed by the lamp holder.

Next, a case where it becomes necessary to change the direction of light emitted from the lamp with a base, such as when the size of the object to be processed is changed, will be described. As previously mentioned,
On the surface of the arc tube 1, the light reflection film 4 is formed in a specific region in advance, and by rotating the lamp with the base around the tube axis in a state where the lamp with the base is supported by the lamp holder 5, The direction of light can be changed.

FIG. 4 is an explanatory view of rotating the lamp with the base around the tube axis while the lamp with the base is supported by the lamp holder. As shown in FIG. 4 (a), when the lamp with a base is rotated around the tube axis shown by the arrow, the stopper 52 of the lamp holder 5 has the cutout 3
A stress is applied from the second side surface 320, and the position can be changed by its own elastic force with respect to this stress. Specifically, the stopper 52 is made of stainless steel having a thickness of 0.4 mm, a part of which is fixed to the lamp holder 5 with a screw, and the other part of which is engaged with the cutout 32.

Then, as shown in FIG. 4B, when the lamp with the base is further rotated around the tube axis shown by the arrow, the stopper 52 is engaged with the cutout 32.
Will engage with another notch 32 adjacent to
The lamp with a base can be rotated around the tube axis. Then, when the force to rotate about the tube axis is stopped, the lamp with the base does not rotate about the tube axis at that position, and the position can be determined. Therefore, the radiation direction of light can be changed by rotating the lamp with a base around the tube axis.

As shown in FIG. 4 (a), the lamp with the base rotates while the stopper 52 is in contact with the cutout 32. As shown in FIG. Since the cross-sectional shape of is a circular arc shape, even if stress is applied to the side surface 320 of the cutout portion 32, the stress is not concentrated, so that the cutout portion 32 is not damaged.

[0022]

As described above, in the lamp with a base according to claim 1, when the lamp with a base is supported and fixed by being engaged with the lamp holder, a load that rotates around the tube axis of the lamp is applied. Even if it is applied, the base will not be damaged.

In the lamp with a base according to the second aspect, even if the lamp with a base is engaged with the lamp holder, the lamp with a base is rotated around the tube axis and the mounting angle around the tube axis is changed. Can change the emission direction of light.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a lamp with a base according to the present invention.

FIG. 2 is a sectional view taken along line YY in the direction orthogonal to the tube axis in FIG.

FIG. 3 is an explanatory view showing a lamp engaging structure of the present invention.

FIG. 4 is an explanatory view of rotating a lamp with a base around a tube axis in a state where the lamp with a base of the present invention is supported by a lamp holder.

FIG. 5 is a cross-sectional explanatory view of a heating device using an incandescent lamp.

FIG. 6 is an explanatory view showing an engagement structure of a conventional lamp with a base.

[Explanation of symbols]

1 arc tube 2 filament 3 base 31 Engagement part 310 perimeter 32 Notch 320 side 4 Light reflection film 5 lamp holder 51 through hole 52 Stop

Claims (2)

[Claims] 1. A base-equipped lamp having a filament inside a tubular arc tube along a tube axis, and a ceramic base attached to an end of the arc tube, wherein the base is the lamp with the base. Has an engaging portion for supporting and fixing to the device, the engaging portion has a plurality of cutout portions of the outer periphery of which is recessed toward the tube axis, the cutout portion, A lamp with a base, which is characterized in that it extends parallel to the tube axis and has a circular arc-shaped cross section orthogonal to the tube axis. 2. A lamp with a base, in which a filament is provided inside a tubular arc tube along the tube axis and a ceramic base is attached to the end of the arc tube, is supported by a lamp holder fixed to the device. In the fixed lamp engaging structure, the base of the lamp with a base has an engaging portion that engages with the lamp holder, and the engaging portion has a periphery recessed toward the tube axis. A plurality of cutouts, the cutouts extending in parallel to the tube axis, the cross-sectional shape orthogonal to the tube axis is arcuate, the lamp holder, the It has a stop portion that engages with the cutout portion to adjust the fixed angle around the tube axis of the lamp with a base, and the stop portion is its own when the engagement portion rotates around the tube axis. Adjacent to change position by elastic force Ramp-engaging structure characterized by engaging said notch that.