JPH049733Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an incandescent light bulb with a base used for, for example, stage lighting or studio lighting.

[Conventional technology]

Generally, in an incandescent light bulb with a base, it is necessary that the sealed end of the one-end sealed incandescent light bulb and the base be fixed while maintaining a predetermined positional relationship.

FIG. 2 shows the structure of the base portion of a conventional base-equipped incandescent light bulb. In the figure, 1 indicates the base and 2 indicates the sealed end of the one-end sealed incandescent light bulb. The base 1 has a bottomed cylindrical shape made of ceramic, for example, and has a sealed end 2 inserted and received through an opening at one end, and a pin 1 protruding outward from the bottom wall of the base 1.
A connection lead 22 extending from an outer conductor 21 protruding from the sealed end 2 is connected to 1 . A filler material 3 made of sand or gravel is filled to close the space within the base 1, and an adhesive layer 4 is further formed on the filler material 3.

Such an incandescent light bulb with a base is manufactured by inserting the sealed end 2 of the incandescent light bulb into the base 1 and connecting the outer conductor 2.
1 and the pin 11 by the connecting lead wire 22, the space inside the base 1 is filled with sand or gravel, and in this state, the attitude or position of the incandescent light bulb with respect to the base 1 is adjusted to the required state, Thereafter, an adhesive layer 4 is formed on the sand or gravel filler to completely fix the two.

That is, in the state filled with sand or gravel before the adhesive layer 4 is formed, the incandescent light bulb is in a temporarily fixed state, and its posture or position can be adjusted. The positional relationship between the base 1 and the incandescent light bulb can be maintained without requiring any other means, and therefore no means for fixing the two until the adhesive of the adhesive layer 4 hardens. Become.

[Problem that the invention attempts to solve]

However, in conventional incandescent light bulbs with bases, when sand is used as the filler in the base 1, the filling rate is too high and the holding force of the incandescent light bulb is too large. Another problem is that the degree of freedom in position adjustment is small. On the other hand, when gravel is used as a filler, a large degree of freedom in adjusting the posture or position of the incandescent light bulb can be obtained, but the layer of gravel has a high porosity, and when filled with adhesive, the adhesive is I entered the...
There is a problem that it becomes difficult to form the required adhesive layer 4.

[Purpose of invention]

The present invention solves the above-mentioned problems and provides an incandescent light bulb with a base that has a large degree of freedom in adjusting the attitude or position of the incandescent light bulb with respect to the base and can be securely fixed with adhesive. With the goal.

[Means to achieve the purpose]

The incandescent light bulb with a base of the present invention includes a bottomed cylindrical base having an opening at one end, a one-end sealed incandescent light bulb whose sealed end is received and fixed within the base, and a space inside the base. It is characterized by comprising a gravel layer filled and formed on the bottom side of the base, a sand layer formed on the gravel layer, and an adhesive layer formed on the sand layer.

〔effect〕

According to this configuration, the gravel layer provides a greater degree of freedom in adjusting the attitude or position of the incandescent light bulb with respect to the base, and the sand layer prevents the adhesive from entering, so the adhesive layer Therefore, the incandescent light bulb can be securely fixed to the base.

〔Example〕

FIG. 1 is an explanatory sectional view of an incandescent light bulb with a base according to an embodiment of the present invention. A sealed end 2 of the base 1 is inserted and received, and a connecting lead 22 extending from an outer conductor 21 that projects from the sealed end 2 is connected to a pin 11 that projects externally from the bottom wall of the base 1. There is. Then, to close the space inside the base 1, the bottom side of the base 1 is filled with gravel made of, for example, spherical Kansui stone with an average grain size of 4 mm, forming a gravel layer 50.
is formed, and on this gravel layer 50, for example, 3
Sand layer 5 is filled with sand made of 0-mesh quartz.
1 is formed, and an adhesive layer 4 made of an inorganic adhesive is further formed on this sand layer 51.

In the above, the gravel of the gravel layer 50 preferably has an average particle diameter of about 2 to 6 mm, and the sand of the sand layer 51 preferably has a grain size of 5 to 50 mesh. Further, as the adhesive for the adhesive layer 4, for example, an alumina adhesive or a silica adhesive such as "Sumiceram" (trade name) can be preferably used. The thickness of each of these layers varies depending on the material, but to give an example, the thickness a of the gravel layer 50 is 30 mm, the thickness b of the sand layer 51 is 5 mm, and the thickness c of the adhesive layer 4 is 5 mm. It is.

According to such a configuration, the sealed end 2 of the one-end sealed incandescent light bulb L is inserted into the base 1, and the outer conductor 2 is inserted into the base 1.
1 and the pin 11 through the connection lead 22, the space inside the base 1 is first filled with gravel to form a gravel layer 50, and the attitude or position of the incandescent light bulb with respect to the base 1 is adjusted to the required state. After that, a sand layer 51 is formed on this gravel layer 50, and then an adhesive is filled on this sand layer 51 to form an adhesive layer 4.

That is, the gravel layer 5 before the sand layer 51 is formed.
0 is formed, the one-end sealed incandescent light bulb L can adjust its posture or position with a large degree of freedom, and after this adjustment is completed, the adhesive layer 4 is formed. However, since the adhesive for the adhesive layer 4 is applied on the sand layer 51 with a small porosity, it does not penetrate into the lower layer, and therefore the adhesive for the adhesive layer 4 is reliably sealed at the sealed end of the one-end sealed incandescent light bulb L. 2 can be fixed to the base 1. Of course, while the adhesive is curing, the one-end sealed incandescent light bulb L is held by the gravel layer 50 and the sand layer 51, so the base 1 can be removed without using any other means.
The state of the one-end sealed incandescent light bulb L can be maintained.

In this way, it is possible to adjust the posture or position of the one-end sealed type incandescent lamp L with respect to the base 1 with a large degree of freedom, and moreover, the one-end sealed type incandescent lamp L can be reliably attached to the base 1 with adhesive. Since it can be fixed, production efficiency in manufacturing is greatly improved, and incandescent light bulbs with bases that comply with required standards can be reliably manufactured.

As described above, the incandescent light bulb with a base of the present invention includes: a bottomed cylindrical base having an opening at one end; a one-end sealed incandescent light bulb whose sealed end is received and fixed within the base; It is characterized by comprising a gravel layer formed by filling the bottom side of the base in the inner space of the base, a sand layer formed on the gravel layer, and an adhesive layer formed on the sand layer. structure, there is a large degree of freedom in adjusting the attitude or position of the incandescent light bulb with respect to the base.
In addition, since fixation with adhesive can be reliably achieved, manufacturing is easy and the product always satisfies the desired dimensional specifications.

[Brief explanation of the drawing]

FIG. 1 is an explanatory sectional view of an incandescent light bulb with a base according to an embodiment of the present invention, and FIG. 2 is an explanatory side view of the base portion of a conventional incandescent light bulb with a base. DESCRIPTION OF SYMBOLS 1... Base, 2... Sealing end, 3... Filling material, 4... Adhesive layer, L... One end sealed incandescent light bulb, 11... Pin, 21... Outer conductor, 22... Connection lead, 50... Gravel layer, 51... Sand layer 5.

Claims (1)

[Scope of utility model registration request] a bottomed cylindrical base having an opening at one end; a one-end sealed incandescent light bulb whose sealed end is received and fixed within the base; 1. An incandescent light bulb with a base, comprising: a gravel layer formed by sand, a sand layer formed on the gravel layer, and an adhesive layer formed on the sand layer.