JP3083369U - Small lighting equipment - Google Patents

Abstract

(57) [Problem] To firmly attach a small lamp to a lamp socket of a small lighting fixture. A small luminaire 1 includes a small lamp 2, a lead wire guide member 3, a terminal plate mounting body 20, and a lamp socket 40. In the lead wire guide member 3,
A window 12 from which a part of the bulb 4 of the inserted small lamp 2 protrudes is formed. A pair of convex portions 43 facing each other are formed on the inner surface of the front part of the lamp socket 40, and when the small luminaire 1 is assembled, the convex portions 43 are formed on the surface of the bulb 4 protruding from the window 12. Abut

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a small lighting device for decorating a showroom, a Christmas tree, and the like.

[0002]

[Prior art]

 Japanese Utility Model Publication No. 3051831 discloses a small luminaire of this type.

In this small-sized lighting device, a pair of cylindrical terminals for inserting and holding a lamp is fixed, a lamp mounting body for inserting a lamp into the cylindrical terminal and electrically connecting the lamp, and a lamp mounting body for fitting and holding the lamp mounting body. It consists of a cylindrical lamp socket. On the inner surface of the lamp socket, a pair of first convex portions facing each other extending in the fitting direction of the lamp mounting body and a pair of second convex portions extending in a direction perpendicular to the first mounting portion are formed. The body is formed with a pair of first and second concave portions that engage with the first and second convex portions, respectively. When the lamp mounting body is fitted into the lamp socket, these first and convex portions engage with the first and second concave portions, respectively, and the lamp socket and the lamp mounting body are fixed.

[0004]

[Problems to be solved by the invention]

 However, in this small luminaire, the small lamp is only inserted and held in the cylindrical terminal, and the holding of the small lamp is loosened due to various factors during use, and the small lamp falls out of the cylindrical terminal. Otherwise, the lead wire extending from the small lamp by rotating in the cylindrical terminal may be twisted and disconnected.

An object of the present invention is to solve such a problem, and an object of the present invention is to provide a small luminaire in which a small lamp can be firmly attached to a lamp socket.

[0006]

[Means for Solving the Problems]

 In order to solve the problem, the present invention is based on the premise that a small lamp having a pair of lead wires extending from a base end of a bulb containing a light source and a base end of the small lamp can be inserted in front. A lead wire guide member having a lamp insertion portion and a guide portion for guiding a lead wire from the lamp to the rear, and a pair of terminal plates electrically connected to an external power supply are fixed. A terminal board mounting body into which a wire guide member can be inserted, and a lamp socket into which the terminal board mounting body can be fitted from the front. These small lamps, a lead wire guide member, and a terminal board mounting body This is a small luminaire in which each of the lead wires and each of the terminal plates are electrically connected in a state where the lamp socket is assembled.

[0007] In such a small lighting device, the features of the present invention are as follows. The lead wire guide member has a flat portion in which the lamp insertion portion is connected to the annular portion that can be abutted against the terminal plate mounting body from the front and the annular portion, the outer diameter is smaller than the annular portion, and the cross-sectional shape is substantially rectangular. And a part. The flat portion has a dimension in the thickness direction of the rectangle smaller than a diameter of the small lamp, and is formed in the thickness direction such that a part of the surface of the inserted small lamp can protrude outside the flat portion. It has a pair of windows facing each other. The lamp socket includes a pair of protruding ridges that extend in a fitting direction of the terminal plate mounting body and have tops opposed to each other in a radial direction on a front inner surface of a portion where the terminal plate mounting body is fitted. In the assembled state of the fixture, the top of each of the ridges is in contact with the surface of the small lamp projecting from the pair of windows.

[0008]

[Embodiment of the invention]

 Hereinafter, the present invention will be described based on an embodiment shown in the drawings. In this embodiment, the present invention is applied to a small decorative lighting device such as a showroom.

FIG. 1 is a perspective view of a small lighting device 1.

FIG. 2 is an exploded perspective view of the small lighting device 1.

FIG. 3 is a sectional view taken along line III-III of FIG.

FIG. 4 is a diagram showing a section taken along line IV-IV of FIG.

FIG. 5 is a sectional view taken along line VV of FIG.

FIG. 6 is a perspective view of the terminal plate.

As shown in FIGS. 1, 2 and 3, the small lighting device 1 includes a small lamp 2 containing a tungsten wire as a light source and a pair of lead wires 6 of the small lamp 2 from the front to the rear (in FIG. A lead wire guide member 3 for guiding from left to right), a terminal board mounting body 20 for guiding a pair of power cords 29 and fixing a terminal board 21 attached to the end of the cord 29; The small lamp 2, the lead wire guiding member 3, the terminal plate mounting body 20, and the lamp socket 40 are assembled as shown in FIG. Used to be used.

The lead wire guide member 3, the terminal plate mounting body 20 except for the pair of terminal plates 21, and the socket 40 are formed of an electrically insulating synthetic resin.

As shown in FIG. 3, the small lamp 2 has a bulb 4 and a pair of lead wires 6 extending from a base end 5 of the bulb 4. The base end 5 has two flat surfaces 5a and 5b which are made flat.

The lead wire guide member 3 has a lamp insertion portion 7 formed inside a front portion, and a lead wire guide portion 10 formed inside a rear portion. The front portion of the lead wire guide member 3 has an annular portion 8 having a large outer diameter and a flat portion 9 which is located behind the annular portion 8 and has a smaller outer diameter than the annular portion 8 and has a substantially rectangular cross section. . The flat portion 9 has a pair of parallel flat portions 9a and 9b in the thickness direction (vertical direction in the figure). The flat portions 9a and 9b have a pair of window portions 12 communicating with the insertion portion 7, and a window portion. A pair of lamp holding plates 13 are formed behind each of the lamps 12 to cover the peripheral surface of the lamp 2. The thickness between the flat portions 9a and 9b is smaller than the outer diameter of the bulb 4 of the lamp 2, and the bulb 4 accommodated in the lamp insertion portion 7 has its surface protruding from the window portion 12, while the base end portion 5 has a pair. Is inserted between the holding plates 13. The lead wire 6 is guided to the outside of the guide member 3 through the lead wire guide 10. The lead wire 6 that has exited is folded back along the outer surfaces 11a and 11b of the guide member 3.

As shown in FIG. 2, the terminal plate mounting body 20 has a terminal locking portion 22 at the front and a cord guide portion 23 at the rear. The terminal locking portion 22 has a pair of plate-like portions 24 opposed to each other in the vertical direction in the drawing at intervals of a required dimension, and a terminal is provided between the side portions of the plate-like portions 24. The plate 21 can be fixed. On the outer surface of the plate portion 24, a groove portion 24a having an arc-shaped cross section extends in the front-rear direction. The edges 24d and 24e of the groove 24a abut on the inner surface of the front part 41 of the socket 40, which will be described later.

The cord guide portion 23 of the terminal board mounting body 20 is made flat and has a guide groove 27 for guiding a cord 29 covered with a coating 31 on both sides thereof. At the bottom of the guide groove 27, three parallel ribs 28 extending in the width direction of the groove 27 are formed. In the guide groove 27, the rib 28 is hardly covered by the covering 31 of the cord 29, and the cord 29 does not fall out of the guide groove 27 even when pulled in the length direction.

The lamp socket 40 has a front portion 41 having a substantially circular inner cross section and a rear portion 42 having a substantially rectangular inner cross section. The terminal locking portion 22 of the terminal plate mounting body 20 is inserted into the front portion 41, and the cord guide portion 23 of the terminal plate mounting body 20 is inserted into the rear portion 42. By inserting the cord guide portion 23 having a rectangular cross section into the rear portion 42, the rotation of the terminal plate mounting body 20 in the circumferential direction can be suppressed. On the inner surface of the front part 41, a pair of ridges 43, which face each other in the radial direction and have a semicircular apex, extend in the insertion direction of the terminal plate mounting body 20.

5 and 6 are a sectional view taken along line VV of FIG. 3 and a perspective view of the terminal plate 21. As shown in FIG. 6, the terminal plate 21 is a conductive metal plate that is rolled so as to form an arc, and has three saw-toothed portions 26 with sharp edges at both side edges. ing. As shown in FIG. 5, the pair of terminal plates 21 are brought into contact with each other so that the saw-toothed portion 26 fits into the inner surfaces of the side portions 24 d and 24 e of the plate-shaped portion 24 of the terminal plate mounting body 20. There is no deviation from 22. The rear portion of the lead wire guide member 3 is inserted into the space surrounded by the terminal locking portion 22 and the terminal plate 21 so that the lead wire 6 and the terminal plate 21 folded outside the guide member 3 are connected to each other. Electrically connected.

Hereinafter, an assembling procedure of the lighting fixture 1 will be described, and an operation thereof will be described.

When the small lamp 2 is inserted into the lamp insertion portion 7 of the lead wire guide member 3 from the base end portion 5 from which the pair of lead wires 6 extends, a part of the bulb 4 of the small lamp 2 becomes flat. The base end portion 5 of the small lamp 2 projects between the pair of lamp holding plates 13 and 13 of the flat portion 9. The outer surface of each of the lamp holding plates 13 does not exceed the surface of the bulb 4 projecting from the window 12 in the radial direction of the bulb 4. The lead wire 6 is guided by each of the lead wire guide portions 10, goes out of the flat portion 9, and is folded back along the outer surfaces 11 a and 11 b of the lead wire guide portion 10. This lead wire guide member 3 is inserted in front of the terminal board mounting body 20.

A cord 29 inserted through the socket 40 from the rear extends into the terminal board mounting body 20, and when the lead wire guide member 3 on which the lamp 2 is mounted is inserted into the terminal board mounting body 20 from the front. The terminal plate 21 attached to the end of the cord 29 and the lead wire 6 are electrically connected.

Next, the terminal plate mounting body 20 is fitted into the socket 40 from the front. The code guide portion 23 of the terminal board mounting body 20 is accommodated in a rear portion 42 of the socket 40, and the terminal locking portion 22 is accommodated in a front portion 41 of the socket 40. At the time of this fitting, the cord 29 accommodated in the groove 27 of the cord guide portion 23 is strongly pressed against the inner surface of the rear portion 42 of the socket 40, and the three ribs 28 of the groove 27 are engaged with the covering 31 of the cord 29.

The fitting of the terminal plate mounting member 20 stops when the annular portion 8 of the lead wire guide member 3 comes into contact with the front end of the socket 40 from the front. At this time, as shown in FIG. 4, each of the pair of convex portions 43 of the socket 40 presses against the surface of the small lamp 2 protruding from the window portion 12, and the movement of the lamp 2 is reduced. Is suppressed by. Due to this pressure contact, the lamp 2 does not fall out of the lead wire guide member 3 or the lead wire 6 is twisted and disconnected due to the rotation of the bulb 4.

In this fitted state, the outer surface of the lamp holding plate 13 of the lead wire guide member 3, the outer surface of the groove 24 a of the terminal locking portion 22 in the terminal plate mounting body 20, and the outer surface of the bulb 4 of the lamp 2 If the surfaces are flush with each other, the lamp holding plate 13 and the groove 24a are also pressed by the ridge 43, so that the effect of preventing the rotation of the lamp 2 is further improved and the sawtooth-shaped portion of the terminal plate 21 is formed. Biting into the terminal locking portion 22 at 26 becomes stronger.

The small lighting device of the present invention can be applied to a wide range of applications as a small lighting device for decoration, such as for a Christmas tree, for outdoor illumination, etc., in addition to being used for showroom decoration.

[0030]

[Effect of the invention]

 In the small luminaire of the present invention, the bulb is pressed by the pair of ridges facing each other inside the lamp socket in the radial direction, so that the small lamp can be prevented from falling off and rotating.

[Brief description of the drawings]

FIG. 1 is a perspective view of a small lighting device.

FIG. 2 is an exploded perspective view of a small lighting device.

FIG. 3 is a sectional view taken along line III-III of FIG. 1;

FIG. 4 is a view showing a section taken along line IV-IV in FIG. 3;

FIG. 5 is a sectional view taken along line VV of FIG. 3;

FIG. 6 is a perspective view of a terminal plate.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Small illumination device 2 Small lamp 3 Lead wire guide member 4 Bulb 6 Lead wire 8 Annular part 9 Flat part 12 Window part 20 Terminal board mounting body 21 Terminal board 29 External power supply (cord) 40 Lamp socket 41 Front part 43 Convex part

Claims (1)

[Utility model registration claims] 1. A small lamp having a pair of lead wires extending from a base end of a bulb containing a light source, a lamp insertion portion in which a base end of the small lamp can be inserted in front, and the lamp in rear. A lead wire guide member having a guide portion for guiding a lead wire from the terminal, and a pair of terminal plates electrically connected to an external power supply are fixed, and a terminal plate mounting body capable of inserting the lead wire guide member from the front. And a lamp socket capable of fitting the terminal plate mounting body from the front, and the lead wire in a state where the small lamp, the lead wire guide member, the terminal plate mounting body, and the lamp socket are assembled. And the terminal plate are electrically connected to each other, wherein the lead wire guide member has a ring in which the lamp insertion portion can contact the terminal plate mounting body from the front. A flat portion that is connected to the annular portion and has an outer diameter smaller than that of the annular portion and has a substantially rectangular cross-sectional shape, and the flat portion has a dimension in a thickness direction of the rectangle larger than a diameter of the small lamp. The lamp socket has a pair of windows facing each other in the thickness direction so that a part of the surface of the small lamp inserted can protrude out of the flat portion. The front inner surface of the portion to be fitted has a pair of ridges that extend in the fitting direction of the terminal plate mounting body and whose apexes face each other in the radial direction, and each of the ridges in the assembled state of the small lighting device. Wherein the top portion is in contact with a surface of the small lamp projecting from the pair of windows.