JP4945796B2 - lamp - Google Patents

Description

  The present invention relates to a lamp, and more particularly to the structure of a bulb-type fluorescent lamp.

  As shown in FIGS. 10 and 11, the ceiling-embedded lamp generally has a structure in which a fixture 14 having a socket 15 is provided on a ceiling 18 and the lamp 101 is rotationally inserted into the socket 15. The socket 15 is often provided so as to extend in the vertical direction, but in order to suppress the embedding depth in the ceiling 18, the socket 15 is provided horizontally as shown in FIG. 10, and the light bulb is arranged horizontally with the ceiling. The method used is also widely used. As shown in FIG. 11, since the main body 102 and the base 105 of the lamp 101 are arranged in a straight line, the lamp 101 is attached so as to extend in the horizontal direction in the space inside the fixture 14.

On the other hand, recently, energy-saving lamps have been developed, and the need for replacement from the conventional type is increasing. For example, incandescent light bulbs that are generally used as lighting fixtures currently have a low energy saving rate expressed by light output per power consumption, and are 10 to 15 lm / w (lumen / watt: lumen is a luminous flux indicating brightness). A value of about a unit) is common. On the other hand, a light bulb type fluorescent lamp having a shape similar to an incandescent bulb (see Patent Documents 1 to 3) has an energy saving rate of about 40 lm / w, which is higher in energy saving effect than an incandescent bulb. A light bulb type fluorescent lamp having the same base as the incandescent bulb can be used in place of the incandescent bulb.
JP 2004-265736 A JP 2004-265737 A JP 2004-356060 A

  Many bulb-type fluorescent lamps contain a ballast and are generally larger in size than incandescent bulbs. However, if the fixtures that can be installed on the ceiling have sufficient space for the installation of lamps (usually incandescent bulbs) that are supposed to be used initially, considering the effect on the ceiling strength, etc. There are many. In addition, since the fixture is constructed with a hole in the ceiling, replacement of the fixture itself is very troublesome and is not generally performed. If it is a light bulb type fluorescent lamp of the same size as an incandescent light bulb, there is no problem in installation space, but in a light bulb type fluorescent lamp with a built-in ballast, the light emitting part called a fluorescent tube (or arc tube) is a ballast. Therefore, the necessary brightness may not be obtained. For these reasons, the replacement with the bulb-type fluorescent lamp is particularly restricted in the case of a horizontal socket type ceiling-embedded lamp.

  For various reasons, it is possible to replace the lamp with the same type of lamp with a different shape and size (for example, from an incandescent bulb to an incandescent bulb) instead of replacing it with a bulb-type fluorescent lamp. Space issues can arise. Even in a system other than the horizontal socket type ceiling-embedded type, it is often difficult to replace the lamp with a desired shape or size due to interference with surrounding objects.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a lamp capable of ensuring a good mounting property even in an environment where a mounting space is limited.

Lamp of the present invention includes a body having a light emitting portion is to be rotated inserted the into a socket provided with the threaded portion on the inner peripheral portion, and a ferrule which threaded portion is provided on an outer peripheral portion, provided in the main body It was a rotatable body shaft, so that the rotational torque of the main shaft is transmitted to the base, that have a main body shaft being directly or indirectly connected to the base.

  Thus, according to the present invention, since the lamp is bent between the base portion and the main body, the overall shape is made compact, and the base is socketed in a state where the rotation of the main body is restricted. Therefore, the rotation of the main body does not disturb the installation work. As a result, it is possible to provide a lamp that can ensure a good mounting property even in an environment where space is limited.

(First embodiment)
Hereinafter, the lamp of the present invention will be described with reference to the drawings. 1 is an external view of a lamp according to an embodiment of the present invention, FIG. 2 is a partial sectional view showing the internal structure of the lamp shown in FIG. 1, and FIG. 3 is a part showing the internal structure of the lamp shown in FIG. FIG. The lamp 1 has a main body 2, and the main body 2 has a bent fluorescent tube 3 and a ballast 4 which are light emitting portions. The fluorescent tube 3 is composed of a glass tube 7 in which mercury gas or the like is enclosed in an internal space 8 and a fluorescent material is applied to the surface. Electrodes (not shown) for emitting thermoelectrons are provided at both ends of the internal space 8. The illustrated fluorescent tube 3 has a bent shape that reciprocates twice from the ballast 4 toward the far end side 11 (see FIG. 2) of the lamp 1, but is not limited to such a shape. Other shapes may be used. The ballast 4 is composed of components such as a capacitor and a coil, and is provided to control the lamp current and to provide a starting voltage necessary for lighting the lamp 1. The ballast 4 is housed inside the cover 9. The main body 2 further has a translucent globe 6 that engages with the cover 9 and covers the fluorescent tube 3 and the stabilizer 4.

  A base 5 is connected to the main body 2. The base 5 supplies electric power to the lamp 1 and functions to fix the lamp 1 to a socket 15 (see FIG. 5) of a fixture 14 provided on the ceiling 18. The base 5 uses a Japanese Industrial Standard E17 type. This cap type is commonly used in current small incandescent bulbs, so the exchangeability is improved. An outer peripheral screw portion 16 is provided on the outer peripheral portion of the base 5. A screw portion 17 (see FIG. 5) is provided on the inner peripheral portion of the socket 15, and the base 5 is rotated and inserted into the socket 15 by the outer peripheral screw portion 16 engaging with the screw portion 17 of the socket 15. It is done. Hereinafter, the axis of the base 5 along the insertion direction of the base 5 is referred to as a first axis S1. An axis line connecting the far end side 11 of the main body and the near end side 12 of the main body as viewed from the base 5 is referred to as a second axis S2.

  In the present embodiment, the second axis S2 coincides with the central axis of the globe 6. For this reason, the lamp 1 has a substantially L shape, and when the base 5 is inserted into the socket 15, the main body 2 is fixed downward. In the case of mounting on the fixture 14 as shown in FIG. 5, if the lamp extends long in the direction in which the socket 15 extends, the possibility of interference with the fixture 14 increases. Since the main body 2 can be protruded downward in the vertical direction, even when the inner dimension of the fixture 14 is small, the wearability does not deteriorate. The first axis S1 and the second axis S2 do not necessarily have to be orthogonal to each other, and the above effect can be obtained although there is a difference in degree as long as the first axis S1 and the second axis S2 are inclined at an angle other than 0 degrees.

  FIG. 4 is a conceptual diagram showing details of the rotation mechanism. A rotation mechanism 10 that rotates and inserts the base 5 into the socket 15 is attached to the main body 2. Specifically, the rotating mechanism 10 includes a first shaft 21 extending along the first axis S1 between the main body 2 and the base 5 and a second axis S2 orthogonal to the first axis S1. And a second shaft 22 extending in the direction. Therefore, the first shaft 21 and the second shaft 22 are orthogonal to each other. In such a configuration, when the lamp 1 is mounted on the horizontally extending socket 15, the main body 2 faces downward in the vertical direction. Therefore, when the lamp 1 is turned on, the surrounding illuminance distribution is equalized and there is no discomfort in appearance. The first shaft 21 passes through the cover 9. A pair of bevel gears 23 and 24 are provided at the ends of each of the first shaft 21 and the second shaft 22, and the first shaft 21 and the second shaft 22 are connected in a manner capable of transmitting torque. ing. As shown in FIGS. 2 and 3, the second shaft 22 extends between the fluorescent tubes 3 and extends through the globe 6 to the outside of the globe 6. A knob 13 for manually turning the second shaft 22 is attached to the outer end of the globe 6 of the second shaft 22.

  The connecting means of the first shaft 21 and the second shaft 22 is not limited to a bevel gear as long as torque transmission is possible. Examples of other connecting means include a hypoid gear, a combination of a cylindrical worm gear and a cylindrical worm wheel, and the like.

  Although the globe 6 is provided in the present embodiment, a configuration without the globe, that is, the fluorescent tube 3 may be exposed. In this case, it is desirable that the first shaft 21 has a self-supporting structure supported by the cover 9 or an internal structure in the cover 9.

  A threaded portion 25 is provided at a portion of the first shaft 21 opposite to the end where the bevel gear 23 is provided, and an inner threaded portion 26 is provided on the inner side of the base 5 to be engaged therewith. Yes. Accordingly, the rotational torque from the first shaft 21 is transmitted to the base 5 via the screw portion 25 and the inner screw portion 26. The protrusion 27 and the outer peripheral thread portion 16 of the base 5 function as electrodes, and lead-in wires 31 and 32 extend from each. The lead wires 31 and 32 are connected to the ballast 4 in the cover 9 of the main body 2 through the inner space 28 of the first shaft 21.

  FIG. 5 is a side view showing a state in which the lamp is inserted into the socket. When the lamp 1 is attached to the socket 15, the knob 13 of the second shaft 22 is rotated while pressing the base 5 against the socket 15 (constraining rotation). This rotational motion is transmitted to the first shaft 21 by changing the direction of the rotational axis by 90 degrees with the bevel gears 23 and 24. The rotational movement of the first shaft 21 causes the rotational movement of the base 5 via the inner screw portion 26 of the base 5. As a result, the first shaft 21 and the base 25 linearly move relative to each other along the first axis S <b> 1, and the base 5 is rotationally inserted into the socket 15.

  Thus, according to this embodiment, since the base is oriented horizontally and the main body is oriented vertically, the length of the lamp in the longitudinal direction is shortened, and the ballast-embedded fluorescent lamp is embedded in the ceiling. It is easy to install. For this reason, an energy saving effect can be obtained, and it is possible to select a light emission color and a brightness that are impossible with an incandescent light bulb.

(Second Embodiment)
This embodiment is the same as the first embodiment except that the structure of the rotation mechanism is different from that of the first embodiment. FIG. 6 is a partial cross-sectional view showing a second embodiment of the present invention. The main body 2 has a globe 6 a that covers a fluorescent tube (not shown) having the same structure as that of the first embodiment and the ballast 4. The globe 6a is engaged with the cover 9a so as to be relatively rotatable. On the other hand, the second shaft 22a is fixed to the inner surface of the globe 6a by a fixing portion 29. As a result, the second shaft 22a can be rotated by turning the globe 6a. When the second shaft 22a rotates, the rotational motion is converted into rotational insertion motion of the base 5 into the socket 15 in the same manner as in the first embodiment. In the present embodiment, since the lamp can be attached by turning the globe 6a, there is an advantage that the attachment is improved particularly in the case of a small lamp. In the present embodiment, the second shaft 22a is fixed to the inner surface of the globe 6a. However, similarly to the first embodiment, the second shaft 22a may penetrate the globe 6a and the end may be exposed to the outside of the globe 6a. Good.

(Third embodiment)
In the above embodiment, a manually operated rotation mechanism is used, but in this embodiment, a motor driven rotation mechanism is used. Other configurations are the same as those of the first embodiment. FIG. 7 shows an example of such an embodiment, and a motor 30 that rotationally drives the second shaft 22 is provided at the end of the second shaft 22 that extends to the outside of the globe 6. . That is, a motor 30 is provided instead of the knob 13 of the first embodiment. The motor 30 incorporates a battery and can rotate the second shaft 22. This greatly improves the mounting properties, particularly in the case of large lamps. The motor 30 may be a fixed type, but if it is a removable type, a large number of lamps can be mounted sequentially using a single motor, so that an increase in cost can be suppressed and the influence on the external appearance of the lamp can be minimized. Can do.

(Fourth embodiment)
Furthermore, instead of the rotation mechanism used in the first to third embodiments, the base can be directly rotated and inserted by a motor. FIG. 8 shows an example of such an embodiment, and a motor 31 is provided instead of the rotation mechanism 10 of the first embodiment. The motor 31 is connected to the first shaft 21a and directly rotates the first shaft 21a. Also in this embodiment, the mounting property is greatly improved particularly in the case of a large lamp. As in the third embodiment, the motor 31 may be a fixed type, but if it is a detachable type, a large number of lamps can be sequentially attached using one motor, so that an increase in cost can be suppressed and the appearance of the lamp can be reduced. Can also minimize the effect of.

(Fifth embodiment)
Furthermore, the base can be manually rotated and inserted directly without using the rotation mechanism used in each of the above embodiments. FIG. 9 shows an example of such an embodiment. In the present embodiment, the rotation mechanism 10 of the first embodiment is omitted, but the length of the grip portion 33 that is not provided with the screw portion of the base 5a is made so that the manual operation is facilitated. It is formed longer than the form. At the time of attachment, while pressing the main body 2 against the socket with one hand (constraining rotation), the grip part 33 is turned directly with the other hand (or using a spanner, a monkey wrench, etc.), and the base 5a is rotated to the socket. insert.

  The above embodiment is for a light bulb type fluorescent lamp with a built-in ballast, but the present invention can be applied to a light bulb type fluorescent lamp without a ballast. Furthermore, the present invention can be suitably used even when a conventional incandescent bulb is used, such as when the shape or size is changed.

1 is an external view of a lamp according to a first embodiment of the present invention. It is a fragmentary sectional view which shows the internal structure of the lamp | ramp shown in FIG. FIG. 2 is a partial perspective view showing an internal structure of the lamp shown in FIG. 1. It is a conceptual diagram which shows the detail of a rotation mechanism. It is a side view which shows the state in which the lamp | ramp was inserted in the socket. It is a fragmentary sectional view which shows the internal structure of the lamp | ramp which concerns on the 2nd Embodiment of this invention. It is a fragmentary sectional view which shows the internal structure of the lamp | ramp which concerns on the 3rd Embodiment of this invention. It is a fragmentary sectional view which shows the internal structure of the lamp | ramp which concerns on the 4th Embodiment of this invention. It is a fragmentary sectional view which shows the internal structure of the lamp | ramp which concerns on the 5th Embodiment of this invention. It is a conceptual diagram which shows the attachment method of the lamp | ramp relevant to this invention. It is an external view of the lamp | ramp (incandescent light bulb) relevant to this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Lamp 2 Main body 3 Fluorescent tube 4 Ballast 5, 5a Base 6, 6a Globe 9, 9a Cover 11 Far end side 12 Near end side 14 Attaching tool 15 Socket 16 Outer peripheral thread part 17 Screw part 21, 21a First shaft 22 2nd shaft 23,24 Bevel gear 26 Inner thread part 30,31 Motor S1 1st axis S2 2nd axis

Claims (10)

A main body having a light emitting portion;
The inner peripheral portion is to be rotated inserted into the provided socket of the threaded portion, and a ferrule which threaded portion is provided on the outer surface,
A rotatable main shaft provided in the main body, the main shaft connected directly or indirectly to the base so that rotational torque of the main body shaft is transmitted to the base. you, lamp. The axis of the body shaft intersects with the axis along the insertion direction of the base,
Wherein located between the main body shaft and the cap, that having a coupling means for transmitting rotational torque of the main shaft to the cap lamp of claim 1. The lamp according to claim 2, further comprising a base shaft having both ends connected to the base and the connection means and extending in an axial direction along an insertion direction of the base . The lamp according to claim 3, wherein the main body shaft and the base shaft are orthogonal to each other. The body has a bent fluorescent tube;
The lamp of any one of claims 2 to 4, wherein the body shaft extends between the fluorescent tubes. The main body has a globe covering the fluorescent tube,
The lamp of claim 5 , wherein the body shaft extends through the globe to the outside of the globe. Wherein an end portion extending to the outside of the glove body shaft, a motor for rotating the main body shaft are provided, the lamp according to claim 6. The body has a rotatable glove that covers the fluorescent tube,
The lamp according to claim 5 , wherein the body shaft is fixed to the globe so that the body shaft rotates when the globe is turned. The axis of the main body shaft coincides with the axis along the insertion direction of the base,
Wherein the end portion of the main body shaft, that has a motor is provided for rotating the main body shaft, the lamp according to claim 1.   The lamp according to any one of claims 1 to 9, wherein the lamp is a ballast-type fluorescent lamp.

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