JPH0677151U - Micro light bulb base - Google Patents

Abstract

(57) [Abstract] [Purpose] In this type of conventional base, for example, a concave conical surface is used to receive the bottom of the microminiature bulb to perform positioning, so there is a dimensional error or force during insertion. As a result, the stop position became indefinite, causing excessive stress in the lead wire, which caused the problem of damage to the microminiature bulb. According to the present invention, a set boss 5 is provided between a pair of lead wire through holes 4 and 4 inside a bottom surface 3 of a recess 2 of a base 1 so as to project toward the insertion direction of a microminiature light bulb. Since the base 5 of the microminiature light bulb 10 is positioned by inserting and positioning the microminiature bulb 10 by contacting the bottom 12 of the microminiature bulb 10, the dimensions for manufacturing the microminiature bulb 10 are as follows. The problem is solved by keeping the gap between the lead wire through-hole 4 and the bottom portion 12 of the microminiature bulb 10 constant without being affected by variations in the above.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an ultra-compact light bulb, and more particularly to a base to be attached to an ultra-compact light bulb of this type which is usually formed as a baseless for convenience of use.

[0002]

[Prior art]

 FIG. 2 shows an example of the structure of a conventional base 90 of this type, and the portion of the base 90 into which the micro light bulb 10 is inserted is formed as a substantially bottomed cylindrical recess 91. The bottom surface 92 of the recess 91 is provided with a pair of lead wire through holes 93, 93 having a predetermined pitch in order to penetrate the lead wires 11, 11 of the microminiature electric bulb 10. The pitch between the lead wires 11 and 11 is regulated by 93 and 93 to improve workability when the lead wires are mounted on a printed circuit board or the like.

Further, the inner surface of the bottom surface 92 of the recess 91 is formed into a shallow conical shape or the like so as to form an appropriate gap with the bottom portion 12 of the microminiature light bulb 10. For example, the lead wires 11, 11 When there is a pitch difference between the lead wire through holes 93 and the lead wire through holes 93, the adjustment is supposed to be performed in this gap. The base 90 is formed of a relatively hard member such as resin so that the pitch of the lead wires 11 can be accurately adjusted.

[0004]

[Problems to be solved by the device]

 However, in the above-described conventional configuration, there may be a case where the expected amount of the gap cannot be obtained due to the variation in the shape of the bottom portion 12 of the microminiature light bulb 10, and in such a case, the lead wires 11 and 11 have a large angle. Will cause a large amount of stress to be applied to the bottom portion 12 of the micro-miniature electric bulb 10 at the time of insertion, and this response will cause cracks in the bottom portion 12 and damage the micro-miniature electric bulb 10. There is a problem that lowers the yield, and the solution to this problem becomes an issue.

Incidentally, in recent years, there is a tendency that an industrial robot or the like is used also in the process of inserting the microminiature light bulb 10 and the base 90, and in this case, it is more subtle than in the case of manual work by a skilled person. Since it is difficult to adjust the insertion force, the degree of breakage further increases, and the above problems become more and more important.

[0006]

[Means for Solving the Problems]

 As a concrete means for solving the above-mentioned conventional problems, the present invention is attached to a baseless micro-miniature light bulb in a recess in a hakama shape, is formed by a relatively hard member, and has a predetermined bottom surface. In a base of a micro light bulb having a pair of pitched lead wire through holes, a set projecting in the insertion direction of the micro light bulb between the pair of lead wire through holes inside the bottom surface of the base. A base of a microminiature light bulb, characterized in that a boss is provided, and the set boss is brought into contact with the bottom of the microminiature bulb to position the microminiature bulb and the base for insertion and attachment. To solve the problem.

[0007]

【Example】

 Next, the present invention will be described in detail based on an embodiment shown in the drawings. For ease of understanding, the same parts as those in the conventional example will be described with the same reference numerals. The reference numeral 1 in FIG. 1 is a base, which is made of a relatively hard member, and is provided with a substantially bottomed cylindrical recess 2 at a portion where the microminiature light bulb 10 is inserted. In addition, the bottom surface 3 of the recess 2 is provided with a pair of lead wire through holes 4 and 4 having a predetermined pitch, which is similar to the conventional example.

Here, in the present invention, the set boss 5 is provided at the position inside the bottom surface 3 of the recess 2 and in the middle of the pair of lead wire through holes 4. For example, it is projected in a cylindrical shape toward the insertion direction of the micro light bulb 10, and its height corresponds to the size of the space to be created between the bottom surface 3 and the bottom 12 of the micro light bulb 10. Shall be allowed.

At this time, the set boss 5 is not limited to the above-mentioned cylindrical shape, and for example, the top surface obtained when the trapezoid is rotated has a flat conical shape, a prismatic shape, or a pipe shape. The microminiature light bulb 10 can be formed in any shape, such as a step 6 at the position corresponding to the height of the set boss 5 on the inner surface of the recess 2 and the microminiature light bulb 10 can be inserted into the micro miniature light bulb 10. The stress applied to the bottom portion 12 of the above may be dispersed with the set boss 5.

Next, the operation and effect of the base 1 of the present invention having the above-described structure will be described. By providing the set boss 5, when the micro light bulb 10 is attached to the base 1, When the set boss 5 and the bottom portion 12 of the microminiature light bulb 10 come into contact with each other, the positioning of the base 1 and the microminiature light bulb 10 is performed. Even when the bottom shape of the small light bulb 10 varies, a predetermined gap can be surely obtained between the two.

Therefore, even when there is a pitch difference between the lead wires 11 and 11 and the lead wire through holes 4 and 4, excessive stress is generated on the lead wires 11 and 11 side during the regulation. As a result, damage such as cracks that occur in the micro light bulb 10, especially in the bottom portion 12, is prevented.

[0012] Furthermore, since the set boss 5 is used to position the micro-miniature bulb 10 at the same time, the stop position is accurate without being affected by the magnitude of the force applied at the time of insertion. For example, even if the insertion is performed manually or the automatic insertion is performed by the industrial robot, the same result can be obtained, and the quality can be made uniform.

[0013]

As described above, according to the present invention, the set boss protruding toward the insertion direction of the micro light bulb is provided between the pair of lead wire through holes inside the bottom surface of the recess of the base. Since the boss is in contact with the bottom of the microminiature bulb to position the microminiature bulb and the base for insertion and positioning, the microminiature bulb has a base in which variations in manufacturing dimensions of the microminiature bulb can be avoided. The gap between the lead wire through-hole and the bottom of the microminiature bulb should be kept constant without being affected by this, so that excessive force is not applied to the leadwire and damage to the microminiature bulb is prevented. It is possible to prevent it, and therefore, it has an excellent effect of improving yield and improving productivity.

Further, with the above configuration, it is possible to accurately obtain the setting position when mounting the microminiature light bulb and the base, and for example, product variation due to difference in working means during automatic insertion and manual work. As it does not occur, it also has an excellent effect on quality improvement.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a base of a microminiature light bulb according to the present invention in a partially broken state.

FIG. 2 is a perspective view showing a conventional example in a partially broken state.

[Explanation of symbols]

 1 ... Base 2 ... Recess 3 ... Bottom 4 ... Lead wire through hole 5 ... Set boss 6 ... Step 10 ... Micro light bulb 11 ... Lead wire 12 ... Bottom

Claims (1)

[Scope of utility model registration request] 1. A microminiature, which is attached to a baseless microminiature bulb in a recessed shape in a hakama shape and is provided with a pair of lead wire through holes formed on a bottom surface with a predetermined pitch and formed of a relatively hard member. In the base of the light bulb, a set boss protruding toward the insertion direction of the microminiature bulb is provided between the pair of lead wire through holes inside the bottom surface of the base, and the set boss is provided at the bottom of the microminiature bulb. A base of a micro light bulb, which is characterized in that the micro light bulb and the base are inserted and positioned by being brought into contact with each other.