JP3022400B2 - Surface mount components for indicator lights - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surface mount component for an indicator lamp which is mounted on a conductor pattern on the surface of a printed circuit board.

[0002]

2. Description of the Related Art In general, indicator lamps (minimum lamps) arranged inside an instrument panel of an automobile, an aircraft or the like, a computer, various display panels, and the like are mounted on a printed circuit board. Conventional mounting of the indicator light on the printed circuit board involves inserting a lamp lead (lead wire) protruding from the front end of the lamp body into the lead wire hole drilled in the printed circuit board from the front side and positioning the conductor pattern on the back side. And fix the soldering. As described above, in the case where a hole is formed in the substrate and soldering is performed on the back surface, one surface (front surface) cannot be used at all and the mounting structure is inefficient, and there is a problem in workability and the like. For this reason, recently, what is called a surface mounting type which is attached to only one surface (front surface) has been standardized. In this case, the configuration of the surface mounting component for an indicator lamp, which is a combination of an extremely small lamp and a holder (socket), includes a lead wire b protruding from the lower end of the lamp body a as shown in FIGS. The solder c is drawn out through a through hole d at the bottom of the holder c, and is bent outward along the bottom surface of the holder c to form a solder paste portion e.

[0003]

That is, as described above, in the conventional surface mount component, a vertical wire is used in which the lead wire b of the lamp body a is bent from the lower end of the holder c along the bottom surface to form a terminal structure. Type (see FIG. 7 (A)), or a horizontal type (FIG. 7 (B)) in which the lead wire b is bent from the bottom of the holder c along the side wall to form a horizontal terminal.
See).

However, the conductor pattern g of the printed circuit board f
In this case, the lead wire b is superposed and soldered. At this time, since the lead wire itself has a fine wire structure and a cross-sectional shape is a circular structure, a seat on a conductor pattern surface is poor, and solder paste is poor. In addition, the lead wire b had defects such as being too thin and easily bent during transportation.

In view of the above circumstances, according to the present invention, the terminal portion facing the lower surface portion of the prismatic holder main body is constituted by a strip contact terminal serving as a separate dedicated lead joined to the lamp lead. An object of the present invention is to provide a surface mount component for an indicator light that solves the problem.

[0006]

SUMMARY OF THE INVENTION The present invention relates to a surface mounting component for an indicator lamp which can be mounted on a printed circuit board and has a very small lamp specification. Forming a plastic prismatic holder main body in which a horizontal insertion groove for a terminal to be cut from a side wall is provided at an intermediate position of each of the lead through holes.
Insert the clip portion of the band-shaped contact terminal having a U-shaped bent portion extending from the lower surface portion of the holder main body to the side wall into the lateral insertion groove for each terminal, and fit the lamp into the clip portion facing the lead through hole. The lamp lead of the lamp inserted into the contact portion is press-fitted, and two right-angled surfaces facing the lower surface and the side wall of the holder main body of each contact terminal are configured as vertical and horizontal terminals.

In this case, the clip portion of the strip-shaped contact terminal is
A clamping structure with a lead guide split groove at the center.

As described above, the surface mount component for the indicator light is such that the lamp lead of the lamp to be inserted into the lamp fitting portion provided on the plastic prismatic holder main body is inserted into the lateral insertion groove for the terminal facing the lead through hole. It is press-fitted into the clip part of the band-shaped contact terminal inserted from the side wall of the main body and joined, and the contact terminal is formed in a band shape and is formed in a U shape along the lower surface from the side wall of the holder main body, so that the contact terminal is Good sitting and good soldering. In addition, since the contact terminals have a two-sided terminal configuration that is bent 90 ° along the lower surface from the side wall of the holder main body, simply using the holder main body in a vertical or horizontal posture can easily use two types of vertical and horizontal forms. it can. In addition, since the terminal itself has a band-like frame structure, it becomes a robust terminal.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a surface mount component for an indicator according to the present invention.

FIG. 1 to FIG. 4 show an embodiment of a surface mount component for an indicator lamp which enables the assembling of a lamp and a holder body to be automated. Reference numeral 1 denotes a plastic prismatic holder body formed by plastic insert molding. The structure of the holder body 1 is such that a lamp fitting portion 2 is vertically disposed at the upper center and a cone is formed at the bottom of the lamp fitting portion 2. A pair of lead through-holes 3 having an opening 3a is formed, and the lead through-holes 3 are formed.
A pair of terminal lateral insertion grooves 4 cut from the outside to be the side walls 1b of the holder main body 1 is provided at an intermediate position. Reference numeral 5 designates a U-shaped bent portion 5a which is bent along the side wall 1a from the lower surface 1a of the holder main body 1 formed of a metal lead frame at the base end, and a lead guide split groove 6 is cut into the front end. A pair of strip-shaped contact terminals provided with a clip portion 7;
a from the lower surface 1a of the holder main body 1 to the side wall 1b so as to fit into the receiving grooves 8a and 8b, which are cut out by a predetermined depth.
, And the lead guide split groove 6 of the clip portion 7 faces the position of the lead through hole 3 to be integrated. Numeral 9 denotes an extremely small lamp type lamp. The lower part of the lamp 9 is inserted into the lamp fitting part 2 of the holder body 1, and a pair of lamp leads 10 projecting from the lower end are inserted into the opposing lead through holes 3. If the lead 10 is press-fitted into the lead guide split groove 6 of the clip portion 7 of the contact terminal 5 and electrically connected, the horizontal and vertical terminals 5 ′ of two right angles of the contact terminal 5 that bend from the lower surface 1 a to the side wall 1 b. The surface mount component 11 for an indicator lamp having the following.

Now, the operation will be described. First, assembling the surface mount component 11 for an indicator light, a lamp 9 is simply attached to the lamp fitting portion 2 of the prismatic holder body 1 and a lamp lead 10 projecting from the lower end thereof. It is only necessary to insert it so as to face the lead through hole 3. At this time, lamp lead 1
No. 0 is automatically guided to the lead through hole 3 at the bottom of the lamp fitting portion 2, reaches the clip portion 7 of the strip-shaped contact terminal 5 which has been previously arranged orthogonally, and pushes the lead guide split groove 6. Pressed into and fixed. Since the clip portion 7 is held by a spring acting on the lead guide split groove 6, the lamp lead 10 once inserted into the lead guide split groove 6 does not come off, thereby providing a reliable electrical connection. However, the clip portion 7 itself also has several locking claws 7a outside the lead guide split groove 6.
Is provided, the stopper claw 7a bites into the holder main body 1 side to provide a stopper.

As described above, when using the surface mount component 11 for an indicator lamp formed by combining the lamp 9 with the prismatic holder main body 1, for example, as shown in FIG. In the case of the vertical form, the printed circuit board 1 is formed by setting the prismatic holder body 1 to a vertical shape.
2, the vertical (bottom) terminal 5 ′ of the strip-shaped contact terminal 5 facing the lower surface 1 a of the holder main body 1 is placed in contact with the conductor pattern 13. The soldering 14 may be applied.

Further, in the case of the horizontal form as shown in FIG.
The holder body 1 is turned sideways, and the horizontal terminals 5 ′ facing the side walls 1 b of the holder body 1 are placed so as to be in contact with the conductor pattern 13 on the surface of the printed circuit board 12, and a predetermined soldering 1
4 can be applied.

That is, the surface mount component 11 for an indicator lamp of the present invention.
Since the strip-shaped contact terminals 5 formed by bending terminals in contact with the conductor pattern at right angles to two surfaces extending from the lower surface 1a to the side wall 1b of the holder body 1 are located, even if the terminals are mounted on the printed circuit board 12 in a vertical configuration. Even in the horizontal configuration, it is possible to freely select simply by changing the posture of the holder body 1. In addition, since the terminal uses the strip-shaped contact terminal 5 serving as a dedicated lead, the terminal can be well seated on the conductor pattern 13 and can be soldered.

[0015]

As described above, the surface mount component for an indicator lamp according to the present invention has a prismatic body of the holder body, and has band-shaped contact terminals formed in a U-shape on two surfaces extending over the lower surface and the side wall. Therefore, even in the case of vertical or horizontal configuration depending on the restriction of the application (height restriction or direction), it can be selectively used simply by setting the installation posture of the holder main body. That is, the formation of one type of surface mount component can serve both the vertical and horizontal aspects. Moreover,
These terminals do not use lamp leads directly, but use band-shaped contact terminals that are dedicated leads, so that they can sit well on the conductor pattern of the printed circuit board and have good soldering, so that a highly reliable product can be provided and transported. There is no fear that the lead will bend during the operation.

In addition, since the lead frame itself has a simple structure without the provision of leads, and the lead frame itself has a robust structure of the strip, there is no possibility of bending during transportation, and the product is highly reliable.

Also, the assembly of the holder body and the lamp is
The lamp lead faces the through hole when the holder is inserted into the lamp fitting part of the holder body, and it is only necessary to press-fit it into the split groove of the clip part of the U-shaped bent band-shaped contact terminal that is inserted from the side wall of the holder body in advance. , Easy joining. That is, since the assembling process is simplified, continuous assembling can be performed from material supply to completion, and automatic assembling can be performed, which is suitable for mass production, leading to effects such as cost reduction.

[Brief description of the drawings]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing one embodiment of a surface mount component for an indicator lamp of the present invention, wherein (A) is a front view and (B) is a side view.

FIG. 2 is a sectional view of a main part of the surface mount component for an indicator light.

FIG. 3 is an explanatory view of a lamp, a holder body, and a strip-shaped contact terminal of a surface-mounted component for an indicator lamp, which are separated.

FIG. 4 is an explanatory diagram showing a relationship between the band-shaped contact terminal and a lamp lead.

FIG. 5 is an explanatory view of a surface mount component for an indicator light in a vertical form.

FIG. 6 is an explanatory view of the surface mount component for an indicator light in a horizontal form.

7A and 7B are diagrams illustrating a conventional surface mount component for an indicator lamp using a lead wire as a terminal member, wherein FIG. 7A is a vertical type mounting explanatory diagram, and FIG. 7B is a horizontal type mounting explanatory diagram.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Plastic prismatic holder main body 2 Lamp fitting part 3 Lead through hole 4 Horizontal insertion groove for terminal 5 Strip contact terminal 6 Split groove for lead guide 7 Clip part 9 Lamp 10 Lamp lead

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-10-275603 (JP, A) JP-A-10-3344861 (JP, A) JP-A-1-103251 (JP, U) JP-A-6 72260 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) H01K 1/00-1/46 H01L 33/00

Claims (2)

(57) [Claims] 1. A surface mounting component for an indicator lamp which can be mounted on a printed circuit board and has an extremely small lamp specification, a lamp fitting portion is vertically disposed at an upper center portion, and a pair of lead through holes are drilled at the fitting bottom portion. A plastic prismatic holder body is formed in which a lateral insertion groove for a terminal cut from the side wall is formed at an intermediate position of each lead through hole, and a lower end of each lateral insertion groove for the terminal extends from the lower surface of the holder body to the side wall. The clip portion of the band-shaped contact terminal having the bent-shaped portion is inserted, and the lamp lead of the lamp inserted into the lamp fitting portion is press-fitted into the clip portion facing the lead through hole. A surface mounting component for an indicator lamp, characterized in that two right-angled surfaces facing a lower surface portion and a side wall of the holder body are configured as terminals for vertical and horizontal directions. 2. The surface mount component for an indicator lamp according to claim 1, wherein the clip portion of the strip-shaped contact terminal has a holding structure in which a lead guide split groove is disposed in the center.