JPH0715156Y2 - Projector support structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The support structure of the projector of the present invention will be described in detail according to the following items.

A. Industrial fields of use B. Overview of the device C. Prior art [Figs. 4 and 5] D. Problems to be solved by the device [Figs. 4 and 5] E. To solve the problems Means F. Embodiment [Figs. 1 to 3] a. Outline of projector b. Support structure G. Effect of device (A. Industrial application field) The present invention relates to a support structure for a new projector in detail Is a new projector support structure capable of adjusting the posture of the projector from the front side of the outer casing and stably supporting the projector in a desired posture even if the support surface has an inclination or unevenness. It is the one we are trying to provide.

(B. Outline of the Invention) The support structure of the projector of the present invention extends substantially parallel to the line connecting the two adjusting legs and the two adjusting legs that are provided on the front side of the outer casing bottom surface and whose height can be adjusted. 1 having a protruding arc-shaped grounding edge that is erected on the rear side of the bottom surface of the outer casing
Since it is designed to be supported by three points of one self-adjusting leg,
Regardless of the height of the two adjustable legs that can be adjusted from the front side of the outer casing, the part of the grounding edge of the self-adjusting leg that is in the most stable position of the center of gravity contacts the ground, and therefore The projector can be adjusted from the front side of the outer casing and the projector can be stably supported in a desired posture.

(C. Prior Art) [Figs. 4 and 5] Conventional projector support structures include those shown in Figs. 4 and 5.

a is a projector, and b is its outer casing.

Three windows d, d, d are formed on the front surface c of the outer casing b, and the front surfaces of the projection lenses e, e, e for projecting an image in which one image is separated into R, G, B color elements. Is the window d,
It is facing forward from d and d.

In addition, legs g, near the four corners of the bottom surface f of the outer casing b,
are protruded, and the bottom surfaces of the legs g, g, ... Are located in the same plane.

Reference numerals h and h are leg bodies g located on the front side, and adjusting leg bodies provided at positions in contact with the front ends of the g bodies, and their heights can be adjusted.

However, the bottom surfaces of the four legs g, g, ... Are used so that they are grounded to the supporting surface (see FIG. 5 (A)), and the front two legs g, g are used as needed. Adjustable legs h, h instead
It is designed to be used by protruding (Fig. 5 (B)).
reference).

(D. Problem to be solved by the device) [Figs. 4 and 5] By the way, in the above-described conventional projector support structure, the support surface is not a perfect flat surface because it is a four-point support structure. Then, one of the legs g is lifted from the supporting surface, and the supporting state becomes extremely unstable. Further, even when the adjustment legs h, h are used in a protruding manner in place of the two front legs g, g, the rear legs eventually have two g, g, so that the supporting state is unsatisfactory. In order to be stable and to be used in a desired posture, it is necessary to interpose a suitable leg substitute at least at one of the four support points, which is very inconvenient.

Also, in these conventional support structures, after performing the height adjustment of the legs on the front side of the projector, this time it is necessary to turn to the rear side to perform the height adjustment of the legs on the rear side, It is necessary to secure a space for the adjustment man's hand to enter the rear side of the projector, and even in that case, the height adjustment work on the rear side is cumbersome, which is very inconvenient. Therefore, there is a problem that the projector is restricted in installation, which causes a problem that the distance between the projector and the projection screen is insufficient and the projection magnification ratio cannot be fully used.

(E. Means for Solving the Problems) In order to solve the above problems, the projector support structure of the present invention has two adjustable legs and a bottom surface of the outer casing that are adjustable in height on the front side of the bottom face of the outer casing of the projector. On the rear side, one self-adjusting leg having a projecting arc-shaped grounding edge that is erected so as to extend substantially parallel to the line connecting the two adjusting legs is provided.

Therefore, in the support structure of the projector of the present invention,
By appropriately adjusting the heights of the two adjusting legs from the front side of the outer casing, the projector can be used in a desired posture, and even if the supporting surface is inclined or has unevenness, Since the grounding edge of the self-adjusting leg has a protruding arc shape, the grounding is performed at a position where the center of gravity is most stable, and the projector can be supported in a stable state regardless of the supporting surface.

(F. Embodiment) [FIGS. 1 to 3] Hereinafter, details of a support structure of the projector of the present invention will be described according to an illustrated embodiment.

(A. Outline of projector) In the figure, 1 is a projector and 2 is its outer casing.

Inside the outer casing 2, there are a cathode ray tube (not shown) that displays an image obtained by separating one color image into R, G, and B pixels, a projection lens corresponding to each cathode ray tube, and other parts, members, circuits, and the like. It is housed and the front end portions 3, 3, 3 of the projection lens are exposed to the front through holes 5, 5, 5 formed in the front surface 4 of the outer casing 2.

(B. Support structure) The bottom surface 6 of the outer casing 2 has a substantially front half portion 7 higher than other portions,
In addition, a flat surface is formed as a trapezoidal portion, and notch recesses 8 are formed on both left and right sides of the front end portion of the trapezoidal portion 7. Then, nuts 9 and 9 are embedded and fixed to the upper surfaces of the cutout recesses 8 and 8.

Reference numerals 10 and 10 are adjusting legs, and screw shaft portions 12 and 12 are integrally or integrally projected from the substantially disk-shaped foot portions 11 and 11.
Then, the screw shaft portions 12, 12 of the adjusting legs 10, 10 are screwed into the nuts 9, 9. When the adjusting legs 10 and 10 are not used, the screw shaft portions 12 and 12 are fully screwed into the nuts 9 and 9, and the foot portions 11 and 11 are notched concave portions 8 and 8.
The ground contact surfaces 11a and 11a of the foot portions 11 and 11 are located inside and are higher than the ground contact surfaces 7a of the platform portions 7.

Reference numeral 13 is a self-adjusting leg that is erected at a position close to the rear edge of the bottom surface 6 of the outer casing 2 so as to extend substantially parallel to the line connecting the adjusting legs 10, 10. The self-adjusting leg 13 has a substantially plate shape, and a lower edge thereof, that is, a grounding edge 14 is formed so as to have a protruding arc shape, and an amount of protrusion from a bottom surface 6 of a central point 14a in the left-right direction thereof. Is the largest and is located on an extension of the ground contact surface 7a of the trapezoidal portion 7.

Therefore, when the adjustment legs 10 and 10 are retracted, that is, they are placed on the support surface with the adjustment legs 10 and 10 being retracted, that is, while being positioned in the notch recesses 8 and 8, when they are supported on a flat support surface in a normal posture. For example, the ground surface 7a of the trapezoidal portion 7 and the center point 14a of the ground edge 14 of the self-adjusting leg body 13
The area near and is grounded and supported.

In addition, when the outer casing 2 is in a desired posture, or when the supporting surface is inclined or has unevenness, the adjustment legs 10 and 10
The height of each is adjusted to the desired height before use. Then, the grounding surfaces 11a and 11a of the feet 11 and 11 of the adjusting legs 10 and 10 are grounded to the supporting surface, and the most balanced portion of the grounding edge 14 of the self-adjusting leg 13 is grounded. Then, the projector 1 is supported with the center of gravity being most stable.

(G. Effect of the Invention) As is clear from the above description, the support structure of the projector of the present invention is the outer casing in which the front end of the projection lens housed inside is exposed to the front through the hole formed in the front surface. It consists of separate legs protruding from three points spaced from each other on the bottom surface, and two of the legs are provided on both left and right sides near the front edge of the bottom surface of the outer casing to adjust the height. The remaining one leg is a freely adjustable leg, and is erected at a position near the rear edge of the bottom surface of the outer casing so as to extend substantially parallel to the line connecting the two adjust legs, and the amount of protrusion at the substantially central portion. Is a self-adjusting leg having a largest arcuate ground contact edge.

Therefore, in the support structure of the projector of the present invention,
By appropriately adjusting the heights of the two adjusting legs from the front side of the outer casing, the projector can be used in a desired posture, and even if the supporting surface is inclined or has unevenness, Since the grounding edge of the self-adjusting leg has a projecting arc shape, it will be grounded at the place where the center of gravity is most stable, so the projector can be supported in a stable state regardless of the support surface. .

In the above embodiment, the screw type is shown as the adjusting leg, but any type can be applied as long as the height can be adjusted.

Further, the structure shown in the above embodiment is only one example of the embodiment of the present invention, and the technical scope of the present invention is not limitedly interpreted by these, and the purpose of the present invention is not limited. It is possible to carry out various changes without departing from the above.

[Brief description of drawings]

1 to 3 show an example of an embodiment of a support structure for a projector according to the present invention. FIG. 1 is a perspective view, FIG. 2 is a perspective view in which the projector is turned over, and FIG. FIG. 4B is a side view showing a different usage state, and FIGS. 4 and 5 show an example of a conventional projector support structure.
The drawing is a perspective view, and FIGS. 5 (A) and 5 (B) are side views showing respective different usage states. Explanation of symbols 1 ... Projector, 2 ... Outer casing, 3 ... Front end of projection lens, 4 ... Front surface, 5 ... Hole, 6 ... Bottom surface, 10 ...
Adjusting leg, 13 …… Self-adjusting leg, 14 …… Grounding edge

Claims (1)

[Scope of utility model registration request] 1. A separate leg body projecting from three points spaced apart from each other on the bottom surface of the outer casing which faces the front end portion of the projection lens housed inside from the hole formed in the front surface, Two of the above-mentioned legs are provided on both left and right sides near the front edge of the bottom surface of the outer casing and are height-adjustable legs, and the remaining one leg is on the rear edge of the bottom face of the outer casing. 2 above in close proximity
A support structure for a projector, characterized in that it is a self-adjusting leg that is erected so as to extend substantially parallel to the line connecting the two adjusting legs, and has a projecting arc-shaped grounding edge with the largest amount of protrusion in the approximately central portion.