JPH0875792A - Observation hood for meters - Google Patents

Abstract

PURPOSE: To minimize the leaking of light from the back of an observer into an observation hood and improve the obsevability of tube surface of a meter by providing a lid capable of opening and closing which has a peep hole on the observer side of the observation hood. CONSTITUTION: For example, an observation hood is constituted of a cylinder part 1 and a lid 2. The lid 2 on the tube surface side of the cylinder part 1 having a projection 3 for hooking on an oscilloscope body has a peep window 4 and a tongue shape lid support 5 for supporting the lid in use. The cylinder part 1 and the lid 2 are made by covering a core material such as cardboard with soft material such as polyvinyl chloride. However, the lid support 5 has no core material. For the cylinder 1, only polyvinyl chloride at each corner part of the four sheets of core is heat-pressed to be foldable. Also, the connecting part of the cylinder 1 and the lid 2 is made to be foldable. For stocking, the lid 2 is folded in the cylinder 1 and then the cylinder 1 is folded. For using it, the reverse process is done.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to an oscilloscope,
The present invention relates to an observation hood used for a measuring instrument such as an FFT analyzer.

[0002]

2. Description of the Related Art Although a conventional observation hood is foldable, it is merely a rectangular tube when used.

[0003]

The observation hood described above has a large aperture on the side of the observer, and light leaks from the light source behind the observer into the observation hood, which is reflected and the observed waveform is not visible. It had a drawback that it was easy.

An object of the present invention is to solve such a problem, to minimize the leakage of light from the rear of the measurer into the observation hood, and to make the tube surface of the measuring instrument easy to see and to be portable. Foldable for convenient use.

[0005]

In order to achieve the above object of the present invention, an openable and closable lid having a peephole is provided on the observer side of an observation hood, and a tubular portion is provided so that it can be folded. It has a square shape and the lid is also a square shape.

Further, the peephole having a round shape can reduce light leaking.

[0007]

[Function] During measurement, the lid prevents the light from leaking from the back of the measurer. As a result, it is possible to reduce the amount of light leaking from the rear of the measurer, and it is possible to easily see the tube surface.

[0008]

Embodiments of the present invention will be described below.

FIG. 1 is a perspective view of an observation hood for a notebook LCD oscilloscope, and FIG. 2 is a perspective view of an observation hood for a bench type oscilloscope.

First, an observation hood for a notebook oscilloscope will be described.

The observation hood is composed of a cylindrical portion 1 and a lid 2. A lid 2 having a convex portion 3 hooked on the oscilloscope body on the tube surface side of the tubular portion has a peep window 4 and a tongue-shaped lid support 5 that supports the lid when in use. Both the cylinder 1 and the lid 2 are manufactured by covering a core material such as cardboard with a soft material such as vinyl. However, the lid 2 support has no core material. The cylinder 1 is made foldable by thermocompression bonding only the vinyl at each corner of the four core materials. The joint between the cylinder 1 and the lid 2 is also movable in the same manner. When storing, fold the tube after inserting the lid into the tube. If used, do the opposite.

FIG. 3 shows a state where the notebook oscilloscope is mounted.

The bench type oscilloscope is the same as the notebook type oscilloscope mentioned above except that the hook type convex portion 3 which is used in the notebook type oscilloscope is not provided and the mounting is only press-fitted into the bezel on the tube surface.

[0014]

According to the present invention, the measuring instrument can be easily mounted on the measuring instrument main body, light can be prevented from leaking from the rear surface of the observer, and the tube surface can be easily seen. In addition, since it can be folded, it does not take up much space during storage and is convenient to carry.

[Brief description of drawings]

FIG. 1 is an external perspective view of an observation hood for a notebook oscilloscope.

FIG. 2 is an external perspective view of an observation hood for a bench type oscilloscope.

FIG. 3 is a side view showing a state in which the observation hood of the present invention is attached to a notebook oscilloscope.

[Explanation of symbols]

 1 Cylinder 2 Lid 3 Hook 4 Peephole 5 Lid support

Claims (1)

[Claims] 1. An observation hood intended to make a display surface easy to see by surrounding a display surface such as a waveform of a measuring instrument so that the display surface is easy to see when the observation hood is not folded. From the vicinity of the pipe surface to the vicinity of the measurer's viewpoint, cover it so as to darken the gap between the measuring device's viewpoint and the measurer's viewpoint to make it easier to see the pipe surface, and a lid-like cover that can be opened and closed on the measurer's viewpoint side. An observation hood for a measuring instrument, wherein the observation hood is provided and a peep hole is provided in the cover.