JPH02143239A - overhead projector - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention mainly relates to a folding structure of various parts of an overhead projector.

[Prior Art] FIG. 2 is a schematic perspective view of a conventional overhead projector, which includes an optical system other than a Fresnel lens (1.01).
OHP @ section 10 incorporating light source, lens, reflector, etc.)
2 is supported at the end of the OHP column support section 103. OH
The holding part of the P head 102 and the OHP column support part 103 is indicated by the arrow A-
A locking mechanism AlO4 that can be fixed by rotating in direction B is attached. A reflecting mirror 105 that determines the projection direction of the overhead projector is movable in the direction of arrow CD, and can be stored in a recessed portion of the OHP head 102. The OHP bottom section 106, which incorporates the Fresnel lens 101, power supply, switch, outlet, etc., and supports the entire overhead projector, is connected to the OHP support section 103.
It supports the lower end of. The OHP column 103 and the OHP bottom 106 are supported by a locking mechanism B that can be rotated and fixed.
IO7 is included. When the OHP head 102 is rotated 90 degrees in the direction of arrow A and fixed by the lock mechanism AlO4, and the OHP support column 103 is rotated 90 degrees in the direction of arrow E by the lock mechanism B107 and fixed, the OHP head 1
02 and the OHP support support part 103f (can be folded up to the bottom surface of the P bottom part 106. (double-dashed line part) and the OHP bottom part 1
There is a power cord 1 around the Fresnel lens 101 of 06.
09 is provided.

However, some devices are not provided with the power cord storage section 108.

[Problems to be Solved by the Invention] However, in the above-mentioned conventional example, the overhead projector is Although the entire device can be folded, the shape after folding is unusual and large, making it inconvenient to carry and requiring a large amount of space to organize.

In addition, the exterior after folding has a Fresnel lens, light source,
There was also the problem that the lens etc. were exposed.

The present invention is intended to solve the above-mentioned problems, and its purpose is to make the overhead projector's folded shape close to a cube or rectangular parallelepiped, and to make the light source, lens, Fresnel lens, etc. To provide a compact overhead projector which has a structure that does not expose the parts to the outside, is convenient to carry, and requires a small space when organizing.

[Means to solve the problem]

The overhead projector of the present invention has a folding structure in which each part of the overhead projector is folded, and the external appearance of the optical system during projection, such as the light source, lens, Fresnel lens, and reflector, is exposed when the overhead projector is folded. It is characterized by not becoming a part.

[Operation] According to the above configuration of the present invention, the reflecting mirror rotates and the OHP
The OHP head is stored in the recess of the head 101, rotated by the lock mechanism A, and stored inside the box-shaped OHP support column. The bottom of the OHP is rotated by lock mechanism B and serves as a cover for the box-shaped OHP support, so the light source, lens,
Fresnel lenses, reflectors, etc. do not become external parts.

[Example] FIG. 1 is a schematic perspective view of an example of the present invention,
An OHP head 102 incorporating an optical system (light source, lens, reflector, etc.) other than the Fresnel lens 101, a power source, a switch, an outlet, etc. is supported at the end of an OHP support column 103. OHP head 102 and OHP column support part 103
The holding part is attached with a locking mechanism AlO4 which can be rotated and fixed in the directions of arrows A and B. A reflecting mirror 105 that determines the projection direction of the overhead projector is movable in the directions of arrows C and D, and can be stored in a recess in the OHP head 102. OH that incorporates Fresnel lens 101 and supports the entire overhead projector
The P bottom part 106 supports the end of the OHP pillar support part 103. The OHP support column 103 has a box shape and is attached to the OHP head 1.
It has an internal volume that can completely accommodate the 02 and a space that can accommodate the power cord 109. OHP pillar support part 10
The support part of the 3HPJjJ part 106 is attached with a locking mechanism 8107 that can be rotated and fixed. OHP bottom 10
6 has a size that completely covers the opening of the OHP column support section 103 when rotated in the direction of arrow E around the lock mechanism B107.

Next, the operation of the above structure will be explained. The reflecting mirror 105 is moved in the direction of the arrow and is housed in the recess of the OHP head 102. Q The HP head 102 is rotated in the direction of arrow B around the locking mechanism AlO4, and the box-shaped OHP column support part 10
Store it on the 3rd side. OHP support column 103 and OHP after storage
The extra space between the head 102 and the power cord storage section 1
08, and stores the power cord 109 which is folded several times in the shape of a "U". The OHP bottom part 106 rotates in the direction of arrow E around the lock afMB 107, and connects the light source, lens, Fresnel lens 101, power cord 109,
A box-shaped OH is installed to prevent the reflecting mirror 105 from becoming an external part.
It serves as the P column support part 103. Therefore, fold kf:
The appearance after soldering is the OHP support column 103 and the OHP bottom]
This is the opposite surface to the Fresnel lens 101 surface of No. 06.

[Effects of the Invention] As described above, according to the present invention, two locks 81
+71j allows the overhead projector to fold into a cube or rectangular shape,
Since the light source, lens, Fresnel lens, power cord, reflector, etc. are not exposed on the exterior, it is convenient to carry and easy to organize: it has the effect of becoming a compact overhead projector that takes up a small space.

The present invention is effective not only for overhead projectors, but also for all devices that are likely to be carried around, such as projectors and measuring instruments.

[Brief explanation of the drawing]

FIG. 1 is a schematic perspective view of an embodiment of the overhead projector of the present invention. FIG. 2 is a schematic perspective view of a conventional overhead blower. 1, 0 5 107 ・ 109 ・ ・Fresnel lens・OHP head・0)] P column・Lock mechanism A ・Reflector・OHP bottom・Lock mechanism B ・Power cord storage section Power cord and above Applicant: Seiko Epson Corporation Agent: Patent attorney Kisanbe Mizuki and 1 other person

Claims (1)

[Claims] 1) In an overhead projector that projects characters, figures, etc. drawn on OHP paper onto a screen using an optical system such as a light source, a Fresnel lens, a lens, a reflector, etc.
Each part of the overhead projector has a folding structure, and the external parts of the optical system during projection, such as the light source, lens, Fresnel lens, and reflector, do not become exposed parts when the parts of the overhead projector are folded. projector. 2) O that incorporates an optical system other than a Fresnel lens (light source, lens, reflector, etc.) and a power supply, switch, outlet, etc.
an HP head; a reflector movably supported in the OHP head to determine a projection direction; an OHP bottom incorporating a Fresnel lens and supporting the entire OHP; O
A box-shaped O is supported on the bottom of the HP and supports the OHP head.
A locking mechanism A capable of rotating and fixing the HP support section, the OHP head and the support section of the OHP support section, and the OH
It is composed of a locking mechanism B that can rotate and fix the support part of the P column and the OHP bottom, and the OHP head rotated by the locking mechanism A and the OHP bottom rotated by the locking mechanism B have a folding structure. Therefore, the light source
2. The overhead projector according to claim 1, wherein external parts of the optical system during projection, such as lenses, Fresnel lenses, and reflectors, are all housed inside the box-shaped inner part of the OHP support column.