JPH0642414U - Reading lamp - Google Patents

Abstract

(57) [Abstract] [Purpose] In a leading lamp in which the lamp body can be rotated and tilted and the irradiation direction can be adjusted, the irradiation direction can be easily changed, but the irradiation direction cannot be changed as necessary. To A lamp body 2 that supports a light bulb 23 inside and has a spherical outer shape, a lamp housing 1 that is arranged on a wall surface or the like and that supports the lamp body 2 therein in a rotatable and tiltable manner, and this lamp housing. 1 is supported in a semi-fixed state on the one hand, and a locking ring 3 whose supporting position is changed by a manual operation, and a friction fixed on the other side so as to face one surface 32 of the lamp body 2 and the locking ring 3. The ring 26 is provided, and by changing the support position of the locking ring 3, the friction ring 26 and one of the facing surfaces 32 facing the friction ring 26 are provided.
Are pressed against each other, and the frictional force of the friction ring 26 makes it impossible to tilt the lamp body 2.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a luminaire, that is, a reading lamp, which is used indoors of automobiles, aircrafts, etc. and is used by passengers for reading and other purposes.

[0002]

[Prior art]

 Conventionally, this type of reading lamp has a structure in which the direction of the lamp can be adjusted so that the lamp can be irradiated to the desired position of the passenger seated in the seat. For example, a light bulb serving as a light source is supported by a lamp housing, while a lamp body having a lens for focusing the light of the bulb is supported by a ball joint so as to be rotatable and tilted with respect to a lamp joint. With this configuration, even if the lamp housing is fixed to the interior wall, the direction of the lens with respect to the light bulb can be changed by rotating and tilting the lamp body, and the light emission direction of the light bulb can be arbitrarily changed. Becomes

[0003]

[Problems to be solved by the device]

 By the way, in the case where multiple seats are arranged from the window side to the aisle side such as trains and airplanes, and the leading lamps for each seat are collectively arranged on the side wall of the window, passengers in the aisle side seats are Adjusting the illumination direction of the lamp is difficult to reach due to the long distance between the lamp and the seat, which makes adjustment difficult. Therefore, as a service for passengers, maintenance personnel may set the irradiation direction of each reading lamp for each seat in advance.

However, since the reading lamp has a configuration in which the irradiation direction can be adjusted as described above, the irradiation direction is easily changed only by the passenger touching the lamp, and as a result, the irradiation direction is changed. It will be useless to set in advance, and it will not be possible to provide sufficient services. On the other hand, in order to solve such a problem, if the irradiation direction cannot be changed by passengers, it becomes impossible to adjust according to passengers' preference, and the original function of the reading lamp is impaired. become. An object of the present invention is to provide a reading lamp that can satisfy the contradictory requirements that the irradiation direction can be changed easily or difficult.

[0005]

[Means for Solving the Problems]

 The present invention provides a lamp body that internally supports a light bulb, a lens, and the like, and has a spherical outer shape, a lamp housing that is disposed on a wall surface and that supports the lamp body therein so as to be rotatable and tiltable, and this lamp. It is supported in a semi-fixed state on the housing, and has a locking ring whose supporting position is changed by manual operation, and a friction ring fixed to the other side of the lamp body and the locking ring so as to face one surface. By changing the supporting position of the locking ring, the friction ring and one surface facing the friction ring are pressed against each other or separated from each other.

[0006]

【Example】

 Next, the present invention will be described with reference to the drawings. 1 (a) is a front view of an embodiment of the present invention, FIG. 2 (a) is a vertical sectional view taken along the line AA, and FIG. 3 is a partially exploded perspective view showing a schematic configuration. In these drawings, reference numeral 1 denotes a lamp housing having a short cylindrical shape, which is provided on a wall surface B of an aircraft, for example, by a flange 11 provided on a lower edge of the lamp housing and a mount ring 12 fitted on the flange 11. It is fitted and fixed in the hole. The inner surface of the flange 11 of the lamp housing 1 is formed as a spherical bearing seat 13, and a lamp body 2 having a spherical outer surface inside is supported so as to rotate and tilt along the spherical bearing seat 13. There is. This lamp body 2 constitutes a socket 21 in which terminals 22 are provided upright on the upper surface thereof, and a light bulb 23 as a light source is fitted into this socket 21 and the light from this light bulb is reflected in one direction. The reflecting mirror 24 is incorporated. In addition, bayonet recesses 25 are provided at a plurality of places on the circumference of the lower edge for fitting and supporting the lens body 5, which will be described in detail later. Further, an annular friction ring 26 is integrally fixed to the lamp body 2 at a position near the upper portion of the spherical outer surface by adhesion or the like.

On the other hand, an L-shaped engagement groove 14 is formed at a part of the upper side of the lamp housing 1 in the circumferential direction, in this example, at four places in the circumferential direction that oppose the diametrical direction. A part of the engagement groove 14 is provided with an escape recess 14a for allowing an engagement pin provided on a locking ring described later to escape upward. Further, a locking ring 3 in the shape of a short cylinder having a diameter slightly smaller than that of the lamp housing 1 is fitted inside the lamp housing 1. An engaging pin 31 is projected in the radial direction on the circumferential surface of the locking ring 3, and the engaging pin 31 can be and is fitted into the engaging groove 14 of the lamp housing 1. Sometimes the locking ring 3 is attached to the lamp housing 1. Further, an inner flange 32 having substantially the same diameter as the friction ring 26 fixed to the lamp body 2 is formed at the lower edge of the locking ring 3, and between the inner flange 32 and the friction ring 26. Has an annular corrugated elastic ring 4 interposed.

The lens body 5 has a short cylindrical shape that is fitted into the lower opening of the lamp body 2. The lens 51 is mounted inside and the central portion of the lens body 5 is directly connected to the bulb 23. The shade 52 is arranged so that the light is not emitted to the outside. In addition, bayonet engaging pieces 53 protruding in the radial direction are integrally formed at a plurality of positions on the circumference of the upper edge thereof. The bayonet engaging piece 53 engages with the bayonet recessed portion 25 provided at the lower edge of the lamp body 2, and the lens body 5 is smaller than the lamp body 2 as in the well-known bayonet structure. It can be attached to and detached from the lamp body 2 by performing an angle rotation operation. An elastic washer 27 for elastically pressing the lens body 5 downward is fitted in the lower edge of the lamp body 2.

A cross-shaped rib 54 extending in the radial direction is formed on the inner surface of the lower side of the lens body 5. On the other hand, to cover the outer peripheral surface of the lens body 5 protruding from the lamp body 2, the outer surface of the lower side portion thereof is covered with a cover ring 6 having a short cylindrical shape slightly larger than the lens body 5. To be The cover ring 6 is supported on the outside of the lens body 5 in a rotatable state with respect to the lens body 5 by a locking ring 61 inserted between the inner surface of the cover ring 6 and the outer surface of the lens body 2.

According to this configuration, the lamp housing 1 can be installed by fixing the lamp housing 1 to the wall surface of the aircraft, and the upper portion of the lamp housing 1 leaving the lower edge portion thereof is hidden in the wall surface. At the same time, the locking ring 3 is also hidden in the wall surface. At this time, if the locking ring 3 is rotated so that the engaging pin 31 is positioned in the relief recess 14a of the engaging groove 14 as shown in FIG. 1 (a), the locking ring 3 will be elastic. It is held in a state of being biased upward by 4. At this time, the lamp body 2 can be rotated and tilted by the spherical bearing seat 13 provided in the lamp housing 1 without any restriction, and the irradiation direction can be arbitrarily set.

On the other hand, when the locking ring 3 is rotated by a small angle with respect to the lamp housing 1 and the engaging pin 31 is set to be in a state of being disengaged from the escape recess 14a as shown in FIG. The locking ring 3 is forcibly moved to the lower position against the elastic force of the elastic ring 4 by the abutment between the engaging groove 14 and the engaging pin 31. Therefore, as shown in FIG. 2B, the inner flange 32 at the lower edge of the locking ring 3 and the friction ring 26 integrated with the lamp body 2 are pressed against each other via the elastic ring 4. The friction force generated by the friction ring 26 causes the lamp housing 2 to be fixed to the locking ring 3, and as a result, the lamp housing 1 is prevented from being rotationally tilted. Therefore, after the maintenance worker rotates and tilts the lamp body 2 to set the irradiation direction in the state of each (a) of FIGS. 1 and 2, the locking ring 3 is used to set the irradiation direction as shown in each of (b) of FIGS. 1 and 2. If the rotation and tilting of the lamp body 2 is prevented, the irradiation direction cannot be changed afterwards by rotating and tilting the lamp body 2, and it is possible to prevent the irradiation direction from being changed unintentionally.

In addition, in the above-described embodiment, the cover ring 6 is covered around the lens body 5, and the cover ring 6 is rotatable with respect to the lens body 5. Even if the user grasps the outside of the lens and tries to rotate it, the cover ring 6 simply idles and the lens body 5 is not rotated. As a result, it is possible to prevent the lens body 5 fitted in the lamp body 2 with the bayonet structure from coming off. This will prevent accidents such as passengers accidentally touching the lighted bulb while it is lit, resulting in burns or damage to the bulb.

On the other hand, when a maintenance worker or the like needs to detach the lens body for maintenance or the like, as shown in FIG. 4, the cover ring 6 and the lens body 5 can be rotated by pinching the lens body 5 from inside and outside with fingers. Both are integrally rotated, and the lens body 5 can be detached from the lamp body 2. In this case, a finger can be hooked on the cross-shaped rib 54 provided on the lens body 5 for rotation.

It should be noted that the friction ring 26 may be provided on the locking ring 3 side, and a flange may be integrally formed on the lamp body 2 so as to face the lamp ring 2. Further, as long as the locking ring is elastically supported in the direction away from the lamp body, for example, the elastic ring 26 may be replaced by a coil spring interposed therebetween.

[0015]

[Effect of device]

 As described above, according to the present invention, by operating the locking ring, the lamp body can be selectively fixed to the locking ring according to the position of the locking ring. While the irradiation direction of the reading lamp can be adjusted arbitrarily, the rotation direction of the lamp body can be locked to fix the irradiation direction. Thus, for example, it is possible to realize a passenger service that prevents the passenger from unintentionally changing or shifting the irradiation direction after setting the irradiation direction to an arbitrary direction.

[Brief description of drawings]

FIG. 1 is a front view showing a different state in an embodiment of the present invention.

2 is a cross-sectional view taken along the line AA of FIG. 1 corresponding to the different states of FIG.

FIG. 3 is a partially exploded perspective view showing a schematic configuration.

FIG. 4 is a partially cutaway front view for explaining an attaching / detaching operation of the lens body.

[Explanation of symbols]

 1 Lamp Housing 2 Lamp Body 3 Locking Ring 4 Elastic Ring 5 Lens Body 6 Cover Ring 26 Friction Ring 32 Inner Flange

Claims (1)

[Scope of utility model registration request] 1. A lamp body that supports a light bulb inside and has a spherical outer shape, a lamp housing that is disposed on a wall surface or the like and that supports the lamp body therein so as to be rotatable and tiltable, and the lamp housing. A locking ring that is supported in a semi-fixed state and whose supporting position is changed by manual operation, and a friction ring that is fixed to the other of the lamp body and the locking ring so as to face the surface provided on the other side. The reading lamp is characterized in that the friction ring and one surface facing the friction ring are brought into pressure contact with or separated from each other by changing a supporting position of the locking ring.