JPH0739043U - Rotary lamp replacement mechanism - Google Patents

Abstract

(57) [Abstract] [Purpose] When the lamp burns out, even if the lamp is hot, it is possible to replace the lamp with a spare with one touch without touching it directly. A rotary shaft 4 is rotatably attached to a housing 3 of a lamp unit 2, and a socket 5 is attached to one end thereof. A socket contact 5b for fitting and holding the pin contacts 6a of the plurality of lamps 6 is housed and held in the housing 5a of the socket. The optical axis 6b of each lamp 6 is arranged so as to intersect the axis L of the rotation axis in a radial manner and at an angle. The housing 5a is provided with a power receiving terminal 5c connected to the socket contact 5b. The power supply terminal 7 attached to the inner surface of the housing 3 is adapted to be sequentially engaged with the plurality of power receiving terminals 5c by the rotation of the rotation shaft 4. By turning the handle 9 attached to the other end of the rotary shaft 4, the spare lamp can be immediately replaced. The case 3 is detachably attached by engaging its claw 3a with the locking hole 10 of the projector 1, for example.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a lamp exchanging mechanism used in a projector or the like, and more particularly to a rotary type lamp exchanging mechanism capable of exchanging an existing lamp with a preliminary clamp by rotating a rotating shaft.

[0002]

[Prior art]

 Conventionally, this type of lamp replacement mechanism has removed a part of the casing of the projector etc. that uses the lamp as a light source, removed the unusable lamp from the socket, installed a new lamp, and installed the removed casing. It was supposed to be installed in its original position.

[0003]

[Problems to be solved by the device]

 Since the conventional lamp replacement mechanism is a method of directly replacing the lamp itself, the lamp is hot at the time of replacement, so it cannot be replaced until it cools down.When replacing the lamp, remove part of the equipment casing and its position. It had the drawback that it was time-consuming and troublesome to replace because it was attached to the. SUMMARY OF THE INVENTION It is an object of the present invention to eliminate the drawbacks of the prior art and to provide a lamp replacement mechanism which allows one-touch replacement of a spare lamp even when the lamp is hot even if the lamp is hot.

[0004]

[Means for Solving the Problems]

 (1) The rotary lamp replacement mechanism according to claim 1, wherein a housing, a rotating shaft rotatably mounted on the housing so as to project inward and outward, and a socket attached to one end of the rotating shaft. And a contact of each lamp so that each optical axis of the n (integer of 2 or more) lamps housed and held in the housing of the socket intersects the axis of the rotating shaft in a radial and oblique manner. And n sets of socket contacts that respectively engage and hold the socket contacts, and n sets of power receiving terminals that are provided in the housing of the socket corresponding to the lamps and that are connected to the socket contacts of the sets, respectively, and the housing. And a pair of power supply terminals which are attached and sequentially engage with the respective groups of the power receiving terminals when the rotary shaft is rotated. Then, by rotating the rotating shaft, the n lamps can be sequentially exchanged and arranged at the position of one lamp that is biased through the power receiving terminal that engages with the power supply terminal. . (2) In the invention of claim 2, in the rotary type lamp exchanging mechanism according to (1), in the socket, the optical axes of the respective lamps are located at a common point on the axis of the rotating shaft. The lamps are engaged and held so that they intersect at a constant angle. (3) The invention of claim 3 is the rotary lamp exchanging mechanism according to (1) or (2), wherein a turning handle is attached to the other end of the turning shaft. (4) In the invention of claim 4, in the rotary lamp exchanging mechanism according to any one of (1) to (3), the housing is a housing of an apparatus that uses the lamp as a light source. A mounting portion for detachably mounting is provided.

[0005]

【Example】

 An embodiment of this invention will be described with reference to FIGS. In this embodiment, the lamp replacement mechanism (lamp unit) 2 of the invention is used in the projector 1. A rotating shaft 4 is rotatably attached to the housing 3 of the lamp unit 2 so as to project inward and outward, and a socket 5 is coaxially attached to one end of the rotating shaft 4. The housing 5a of the socket 5 accommodates and holds n sets of socket contacts 5b for fitting and holding the pin contacts 6a of the n (integer of 2 or more) lamps 6.

The optical axis 6 b of each lamp 6 is arranged so as to intersect the axis L of the rotating shaft 4 in a radial manner and at an angle. That is, the optical axis 6b of each lamp intersects a point P on the axis L at a constant angle θ. In addition, the housing 5a of the socket is provided with n sets of power receiving terminals 5c, which are connected to the socket contacts 5b of each set, corresponding to the respective lamps.

One set of power supply terminals 7 mounted on the inner surface of the housing 3 is sequentially engaged with the n sets of power receiving terminals 5c one by one by the rotation of the rotating shaft 4, and the power supply wiring 8 is provided. Has been applied. When the working lamp 6-1 is replaced, when the rotating shaft 4 is rotated, the working lamp 6-1 is urged via the power receiving terminal 5c that engages with the power supply terminal 7. The n lamps 6 can be sequentially replaced and arranged. It is desirable to attach a handle (lever) 9 to the other end of the rotating shaft 4 in order to facilitate the rotation of the rotating shaft 4 when replacing the lamp.

The housing 3 of the lamp unit 2 is detachable by a one-touch lock mechanism or the like that hooks the claw 3a into the locking hole 10 of the housing of the device (projector) 1 that uses the lamp unit 2 as a light source. It is desirable to attach to. For the lamps that are no longer needed, when the projector 1 is not in use, the lamp unit 2 can be removed and replaced with a new lamp, and the unit 2 can be attached to the projector 1 again.

The lamp 6 is provided with a cover 6c that collects the light forward. The holder of the lamp 6 may be attached to the housing 3. Although FIG. 1 shows the case where the pin contact 6a of the lamp 6 is inserted into the socket contact 5b, when the lamp 6 is a rotary insertion type, a screw type socket contact may be used. A display device / optical system 11 including a transmissive LCD for transmitting the light emitted from the lamp unit 2, reflecting mirrors 12, 13, 14 for reflecting the transmitted light, and a screen 15 are attached to the housing of the projector 1. Has been.

In the above description, the lamp unit (lamp exchange mechanism) 2 is detachably attached to the housing of the apparatus (projector) 1, but the invention is not limited to this case, and the lamp exchange mechanism is not limited to this case. The two housings 3 may be integrated with the housing of the device 1.

[0011]

[Effect of device]

 According to this invention, when the lamp is replaced while the lamp unit is operating and the lamp is burnt out, the rotating shaft 4 can be rotated and the spare lamp can be replaced with one touch. Therefore, the inconvenience of the prior art that the lamp cannot be replaced until it has cooled down, and that the troublesome work such as removal and installation of the device housing is required when replacing the lamp is solved.

[Brief description of drawings]

FIG. 1 is a horizontal sectional view showing an embodiment of the present invention together with a projector.

FIG. 2 is a front view of the lamp unit 2 of FIG.

Claims (4)

[Scope of utility model registration request] 1. A housing, a rotary shaft that is rotatably mounted on the housing so as to project inward and outward, a socket attached to one end of the rotary shaft, and housed and held in a housing of the socket. , N (integer of 2 or more) lamps have n sets of sockets that engage and hold the contacts of the lamps so that the optical axes of the lamps intersect radially with respect to the axis of the rotating shaft. A contact, n sets of power receiving terminals provided in the housing of the socket corresponding to the respective lamps, respectively connected to the socket contacts of the respective sets, and rotating the rotating shaft attached to the housing. A pair of power supply terminals that sequentially engage with each set of the power receiving terminals, and is biased by the rotation of the rotating shaft via the power receiving terminals that engage with the power supply terminals. At the position of one lamp A rotary lamp replacement mechanism that can sequentially replace individual lamps. 2. The rotary lamp exchanging mechanism according to claim 1, wherein the socket is arranged so that the optical axes of the respective lamps intersect at a common point on the axis of the rotating shaft at a constant angle. It is characterized in that each lamp is engaged and held. 3. The rotary lamp exchanging mechanism according to claim 1 or 2, wherein a turning handle is attached to the other end of the turning shaft. 4. The rotary lamp exchanging mechanism according to claim 1, wherein the casing is provided with a mounting portion that is detachably attached to a casing of a device that uses the lamp as a light source. It is characterized by being