JP4362358B2 - LED spacer - Google Patents

Description

  The present invention relates to LED mounting spacers, and more particularly to mounting spacers for various LEDs that are mounted on electrical products.

  A spacer for attaching a conventional LED (light emitting diode) has a plurality of connection terminals (leads) such as two terminals or three terminals depending on the type of LED, and the lead can be inserted when mounting the LED on a printed circuit board or the like. It is known to use holders having guide holes or insertion holes. (See Patent Document 1)

  FIG. 10 is a diagram illustrating a configuration example of a conventional spacer. FIG. 10A shows individual spacers for each LED. A two-lead LED spacer 6 is used for the two-lead LED 4, and a three-lead LED spacer 7 is used for the three-lead LED 5. Is attached to a substrate or the like. LED leads are attached through spacer grooves or through holes provided for each lead. FIG. 10B is configured such that a necessary number of LEDs can be attached by the LED spacer 8 having a horizontally long and rectangular (slit-shaped) hole common to a plurality of LEDs such as two leads and three leads. Is.

Further, as a holder that can be used as both a three-terminal LED and a two-terminal LED, a holder having a shape and structure having circular holes for inserting LED leads at five cross-shaped points is also known (see Patent Document 1).
FIG. 11 is a diagram showing the structure of the LED holder 9 described in Patent Document 1. As shown in FIG. As shown in FIG. 11A, five guide holes are provided in the insertion direction of the LED lead 10. In the case of a two-terminal LED, as shown in FIG. 11 (b), the lead 10 is inserted into the left and right guide holes with a small interval, and in the case of a three-terminal LED, as shown in FIG. The lead 10 is inserted and held in the large upper and lower guide holes. The LED holder 9 has a structure in which a guide hole penetrates from above. The 2-terminal LED is positioned above the holder at the bottom of the mold, and the 3-terminal LED is positioned above the holder 9 by bending the lead. .

Japanese Utility Model Publication No. 6-13159

  As in the prior art, a plurality of types of LED spacers having a number of holes according to the number of lead wires require a plurality of types of LED spacers having a number of holes according to the number of lead wires, There is a problem that the mounting height of the LED changes depending on the degree of coincidence or mismatch between the lead drawing position from the mold part of the LED and the position of the hole of the spacer.

  In addition, in the case of a spacer having a shape having one long slit-shaped hole, not only the mounting height of the LED changes in the specification in which the lead to be drawn is not aligned on the lower surface of the LED, There is a problem that the positioning of the lead wire in the lateral direction (slit direction) is impossible and the soldering operation of the LED becomes difficult.

Further, the conventional LED spacer itself has a problem that the LED mounting height is fixed, and the LED mounting height is fixed, so that an LED spacer for each height is required. .
(the purpose)
An object of the present invention is to provide an LED spacer that enables positioning of a plurality of LEDs regardless of the number of leads.
Another object of the present invention is to provide an LED spacer capable of changing the height of one or more LEDs.
Another object of the present invention is to provide an LED spacer capable of positioning the tip of an LED lead and a through-hole for connecting a substrate in addition to positioning the height of the LED.

The LED spacer of the present invention comprises an upper surface on which a mold lower part which is a light emitting portion of an LED is mounted, a lower surface disposed on the substrate side, and a side surface between the upper surface and the lower surface, and the mold is directed from the upper surface to the lower surface. The lower lead can be inserted and has a cross-shaped opening formed by an opening serving as a guide for the lead having a cross-shaped cross section in cross section and an opening on the lower surface side through which the lead at the lower part of the mold connected to the opening can pass. Further, the projection includes at least three projections that are fitted into the opening of the substrate and project from the lower surface constituting the fixing portion, and the projection has an inclined shape or a stepped shape that is engaged with the opening of the substrate. The protrusion may be provided on the side surface.

Further, the cross-shaped aperture, the so only the center part and four ends is an end of the elongated hole has a diameter which can pass through the lead of the mold lower portion of the LED on the lower surface side, lower side from the upper side A portion other than the central portion and the four end portions is gradually narrowed in cross section toward the end, or is divided into five openings through which the lead can penetrate on the lower surface side.

  More specifically, a two-lead LED and a three-lead LED can be shared and mounted by one LED spacer by opening a cross hole in the portion where the LED spacer lead is inserted, and the lead is inserted. In some cases, the position of the LED is easily determined, and the height of the LED spacer can be changed by the shape of the protrusion of the LED spacer mounted on the substrate. By making the lower part of the LED spacer into a triangular shape or a staircase shape, the height can be adjusted by changing the hole diameter on the substrate side.

  According to the present invention, the configuration of the LED spacer having a cross hole allows the lower part of the mold to be accurately mounted on the upper surface of the spacer without causing the lead to be interposed between the lower part of the mold and the upper surface of the spacer. Is possible. In addition, by adopting a spacer configuration having a plurality of cross holes, it is possible to attach a two-lead LED and a three-lead LED that can be adjusted in height at any position of the cross hole.

  Also, when soldering the LED leads, the cross hole serves as a guide for the leads, so that positioning is easy and the soldering process is facilitated.

  Furthermore, the height of the upper surface of the LED spacer can be changed by changing the size of the mounting hole of the substrate, depending on the inclined shape of the protrusions that become the legs for mounting the LED spacer on the substrate, and various LED Can be applied to positioning and mounting of the LED, and a highly versatile LED spacer can be configured.

(First embodiment)
FIG. 1 is a view showing a first embodiment of an LED spacer according to the present invention, and FIG. 2 is a view showing a shape and structure of an appearance as seen from each surface of the LED spacer. The appearance of the LED spacer 1 of the present embodiment includes a structure having a plurality of holes (openings) that are arranged on the circuit board 3 and into which the lead wires 22 of the LEDs 2 are inserted.

  As shown in FIG. 2, the LED spacer 1 of the present embodiment includes an upper surface (top surface) 12 that is a surface to which a lower portion (lower mold portion) of a mold portion 21 made of resin (plastic or the like) of the light emitting diode 2 is attached, A box-shaped LED spacer comprising a lower surface (bottom surface) 13 serving as a surface on the side of the substrate 3 to which the spacer is attached, and a side surface 14 between the upper surface 12 and the lower surface 13 and having a substantially rectangular parallelepiped shape. It has an LED holder structure provided with a cross hole 11 into which at least one cross-shaped lead extending from the upper surface 12 to the lower surface 13 is inserted.

  Here, the cross holes 11 are provided in a necessary number such as the number corresponding to the number of LEDs 2 to be attached. In the first embodiment, one long hole of the cross hole 11 is arranged on the upper surface 12 so as to be aligned substantially in a straight line in the longitudinal direction of the spacer. The arrangement of the cross holes, that is, the mutual arrangement of the cross holes 11 is determined by the positional relationship in which the lead wires 22 of the LEDs 2 are electrically connected on the substrate.

Next, an LED mounting method using the LED spacer according to the first embodiment will be described with reference to FIGS.
FIG. 3 is a view showing a state in which the LED lead is inserted into the cross hole 11. The cross hole 11 shows an example in which one is a short (small) long hole shape and the other is a long (large) long hole shape. A small circular display in the cross hole indicates the cross-sectional shape of the lead 22, and a large circular display indicates the cross-sectional shape of the light emitting portion 21 of the LED. FIG. 3A shows a state in which an LED having two lead wires is inserted, which is attached to a small slot according to the specification of the LED. FIG. 3B shows a state in which an LED having three lead wires is inserted, and is attached to a large slot according to the specification of the LED. FIGS. 3C and 3D show an example in which an LED having a large number of leads is attached.

  FIG. 4 is a view showing a state in which a plurality of LEDs are attached to the substrate by the LED spacer of the present embodiment. Even in the LED 2 having a different number of terminals, each lead is housed in the cross hole 11 and is not sandwiched between the lower part of the mold and the upper surface 11, so that the mounting position of each LED can be correctly defined, and the height is Match exactly.

  The LED spacer 1 in the present embodiment is formed at the position and size of the cross hole according to the mounting position and height of the LED, and can be fixed to the substrate 3 in advance by any means. It is also possible to fix by.

(Second Embodiment)
FIG. 5 is a view showing a second embodiment of the LED spacer according to the present invention, and FIG. 6 is a view showing the shape and structure of the LED spacer as viewed from each surface. The appearance of the LED spacer 1 of the present embodiment has a plurality of holes (openings) 11 that are arranged on the circuit board 3 and into which the LED lead wires are inserted, and are provided in the side surface of the LED spacer 1 in the board 3. The second embodiment is different from the first embodiment in that it includes a protrusion 15 that forms a leg portion as a lower shape that can be inserted into the lower portion and can adjust the distance between the substrate 3 and the upper surface 12 of the LED spacer 1.

A method of attaching the LED spacer of the second embodiment to the opening provided on the substrate will be described.
FIG. 7 is a diagram showing the type of the lower shape of the LED spacer 1 and a method for attaching the spacer to the substrate. FIG. 7A shows an example in which the lower end protruding from the side surface of the LED spacer is a rectangular inclined shape 151 that is fitted and joined to the opening of the substrate 3, and FIG. FIG. 7C shows an example of an inclined shape 153 having an isosceles triangle, and FIG. 7D shows a stepped shape 154 that engages with the substrate 3. It is an example.

  For example, inclined shapes 151, 152, 153 or staircase shapes 154 are given to the lower shape of the LED spacer 1, and an opening (coupling hole) 31 having an appropriate diameter corresponding to the protruding portion 15 at the lower portion of the LED spacer 1 is provided on the substrate 3. Protruding portions such as triangles below the LED spacer are inserted into the openings 31 of the substrate 3 and fixed to the substrate, and the LED leads are soldered.

  Here, the apertures 311 and 312 of the opening of the substrate 3 are formed so that the upper surface 11 has a predetermined height by the inclined portion of the protrusion or the stepped portion of the step in consideration of the height of the LED to be attached. Then, the protruding portion of the LED spacer 1 is fitted and fixed to the opening. Thus, the mounting height of the mounted LED is changed by determining the hole diameter according to the size of the shape of the lower part of the LED spacer. When it is desired to increase the height of the LED 2, the opening diameter 31 is reduced. When it is desired to reduce the height of the LED, the opening diameter 31 is increased. The attachment of the two-lead LED and the three-lead LED to the cross hole 11 of the LED spacer 1 is the same as that of the first embodiment.

  FIG. 8 is a diagram showing an example in which the plurality of LED spacers 1 according to the present embodiment are attached to the substrate 3. By providing the substrate 3 with openings having different opening diameters for each LED spacer 1, it is possible to individually set the height of the upper surface of the spacer.

(Other embodiments)
The above embodiments have been described on the assumption that the cross-shaped opening of the LED spacer has the same cross-section from the upper surface to the lower surface. However, by inserting the LED leads from the upper surface side, It is preferable to adopt a cross shape or the like that allows the lead to be accurately guided to the through-hole position of the substrate, as in the case of penetrating and soldering on the back surface of the substrate.

  FIG. 9 is a diagram showing a third embodiment of the LED spacer of the present invention. As shown in FIG. 9A, the cross-shaped opening on the upper surface 12 of the LED spacer 1 is the same as in the previous embodiment, but the shape of the opening on the lower surface 13 is different as shown in FIG. 9B. It is configured. That means

  The LED spacer on the left side of FIG. 9B has a diameter that allows the LED lead to pass only through the cross-shaped central portion and the four end portions of the elongated hole as the shape of the opening of the lower surface 13. As described above, the cross section opening is gradually narrowed from the upper surface 12 to the lower surface 13 except for the central portion and the four end portions.

  The LED spacer on the right side of FIG. 9B has a shape that allows the LED lead such as a circle to pass only at four positions corresponding to the cross-shaped central portion and the end of the elongated hole as the shape of the opening of the lower surface 13. A portion other than the central portion and the four end portions is configured so that the cross-sectional opening gradually narrows and closes at least on the lower surface so as to have a diameter opening.

  As yet another embodiment, the upper surface of the LED spacer may be formed to have an appropriate inclination without being parallel to the attached substrate, and for each cross-shaped opening. A shape having a step, for example, can be configured to compensate for the difference in mold size between single light and two-color light and align the upper end of the mold part on the same surface.

  Further, in the above embodiments of the present invention, the number of cross holes for attaching the LEDs can be from one, and the LED spacer itself can be made of plastic or metal.

It is a figure which shows the structure of the 1st Embodiment of this invention. It is a figure which shows the external appearance shape and structure seen from each surface of the LED spacer. It is a figure which shows the insertion state of the lead | read | reed of LED to a cross hole. It is a figure which shows the state which attached LED to the board | substrate with the LED spacer of this Embodiment. It is a figure which shows 2nd Embodiment of the LED spacer of this invention. It is a figure which shows the external appearance shape and structure seen from each surface of the LED spacer. It is a figure which shows the kind of lower shape of LED spacer 1, and the attachment method to the board | substrate of a spacer. It is a figure which shows the lower part shape and attachment method of a LED spacer. It is a figure which shows 3rd Embodiment of the LED spacer of this invention. It is a figure which shows a prior art example. It is a figure which shows another prior art example.

Explanation of symbols

1, 6, 7, 8 Spacer 10, Lead 11 Cross hole 12 Upper surface 13 Lower surface 14 Side surface 15 Protrusion 2, 4, 5 LED (light emitting diode)
21 Mold part 3 Substrate (circuit board)
9 Holder

Claims (5)

An LED spacer for positioning and mounting an LED on a circuit board, comprising an upper surface on which an LED mold lower part is mounted, a lower surface disposed on the substrate side, and a side surface between the upper surface and the lower surface, A cross that consists of an opening that can be inserted into the bottom of the mold from the bottom to the bottom of the mold and that has a cross-shaped slot and serves as a guide for the lead, and an opening on the bottom that can penetrate the lead at the bottom of the mold connected to the opening LED spacer characterized by having an opening of a shape.   2. The projection according to claim 1, further comprising at least three protrusions protruding from the lower surface that are fitted and fixed to the opening of the substrate, wherein the protrusion has an inclined shape or a stepped shape that engages with the opening of the substrate. LED spacer.   The LED spacer according to claim 2, wherein the protrusion is provided on the side surface. The cross-shaped aperture, the central portion and the long hole end portions in which four end portions only of the mold bottom LED leads so as to have a pierceable diameter at the lower surface side, toward the lower surface side from the upper side 4. The LED spacer according to claim 1, wherein a cross-sectional opening is gradually narrowed in a portion other than the central portion and the four end portions.   5. The LED spacer according to claim 4, wherein the cross-shaped opening is divided into five openings through which the lead can penetrate on the lower surface side.

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