JPH04135038U - Structure of portable radio - Google Patents

Abstract

(57) [Summary] [Purpose] The purpose is to provide a structure for a portable radio device for use on or near water, which can be easily recovered even if dropped into the water, and prevents problems due to water getting inside the case. [Configuration] In Figure 1, at least the joint a of the case, the adjustment shaft b, the flush switch c, the speaker d, the microphone e, and the antenna connector f have a waterproof structure, and the average specific gravity of the aircraft is less than 1.0. or set it to
Alternatively, it is characterized by a built-in carbon dioxide gas cylinder with a pressure valve that operates at a certain water pressure, and a swim bladder attached to the tip of the pressure valve.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention relates to the structure of portable radio equipment used on water or near the water. be.

0002

[Conventional technology]

Portable radios have changed from vacuum tubes to semiconductors such as transistors. , not only smaller elements but also smaller power batteries due to no need for heater power and low voltage operation. Along with this, airframes have become dramatically smaller and lighter, and the use of IC and LSI This has made it easier to produce handheld and pocketable types.

0003 On the other hand, revisions to the Radio Law have expanded the scope of unauthorized use of wireless communication equipment. Recently, the use of radio equipment outdoors has increased significantly, especially at sea and in the mountains where communication methods are inconvenient. Portable radios are becoming a necessity in the modern world.

0004

[Problem that the idea aims to solve]

Particularly when boating on the ocean, rivers, or lakes, portable radios are used between boats and between boats. It is highly effective because it provides the convenience of being able to communicate directly with the local community. However, the recent Band-type radios are small and lightweight, so they can be carried directly in your hand without using a shoulder strap. Accidents of dropping the product are likely to occur due to the manual operation.

[0005] At that time, if it is on the shore, it is important to immediately pick it up and dry it with a simple waterproof structure. However, it is often impossible to recover by boat as it quickly sinks deep. . A simple and reliable measure is to wear a safety belt, but the range of use is limited. This has the disadvantage that the convenience of the portable device is limited.

[0006]

[Means to solve the problem] This idea was developed for the case seams, adjustment shafts, push switches, and speakers. , the microphone, and the antenna connector should be made waterproof, and should not be submerged at least underwater. The feature is that the average specific gravity of the aircraft is less than 1.0, As a condition that even if portable devices are accidentally dropped into water, they can be recovered and used without any problem. teeth, (1) Even if it gets wet, there will be no damage to the outside surface and no water will get inside. (2) The equipment is floating on the water surface. is necessary.

[0007] Figure 1 shows the appearance of a so-called handy transceiver, which is an example of a portable radio device. . In the diagram, a is the seam of the case, which also includes the seam of the other battery compartment lids. . b is the adjustment shaft, c is the push switch, d is the speaker, and e is the microphone , f are antenna parts, and these parts are particularly susceptible to flooding.

[0008] The case is usually made of light metal or molded of plastic such as ABS resin, and has a symbol There is no problem because the display is engraved or waterproof printed, and there is waterproof packing at seam a. It is easy to prevent flooding by applying . Shaft b-2 passes through the case for volume adjustment and rotary switch knob b-1. Therefore, waterproof packing is required. An example of its structure is shown in FIG.

[0009] In the numeric keypad type push switch c, which is often seen these days, it is placed on the front as shown in Figure 4. A transparent film such as Mylar may be applied. Speaker d and microphone e also have a thin film on their surface. You can attach it to a waterproof speaker or microphone that can be used underwater, as shown in Figures 5 and 6. This is easy if you use Crophon.

0010 Since the antenna f itself has a water-resistant structure, only the connection part needs to be waterproofed, as shown in Figure 7. Illustrate the structure. Due to condition (2) above, "the equipment is floating on the water surface" is sufficient as long as the volume (cc)/weight (gr) of the device is less than 1.0, and for convenience, We will call it "average specific gravity." When the average specific gravity is 1.0, the equipment is completely submerged in water. Therefore, for the purpose of the present invention, it is appropriate to select an average specific gravity of about 0.8. Ma In addition, a commercially available carbon dioxide gas cylinder equipped with a pressure valve that operates at a certain water pressure was used. If you put a float bladder on the end of the valve and drop it into water, the water pressure will drop when the water reaches a certain depth. As the water rises, the pressure valve opens and carbon dioxide gas enters the float bladder, causing the radio to float to the surface. A method such as the following can also be used.

[0011]

【Example】

An example in which the present invention is applied to a handy transceiver will be described. current handicap The average weight of a transceiver is around 400gr. Therefore, the average specific gravity of the equipment In order to set it to 0.8, Specific gravity = weight/volume ∴Volume = weight / specific gravity = 400 [gr] / 0.8 = 500 [cc], Although it is slightly larger than the average volume of current equipment (250cc), the width and depth of the aircraft If you choose a size that has a good grip and increase the volume with height, there will be no inconvenience when using it. It's something that doesn't exist.

0012 In addition, the heavier battery is housed at the end opposite the antenna (in practice, such a structure This allows the center of gravity to shift to the bottom, making it easier to hold, and making it easier to hold when dropped into the water. In this case, as shown in Figure 8, the antenna will protrude high above the water surface and float, making it easy to pick up. It's convenient.

[0013] Also, at least apply fluorescent paint or fluorescent plastic to the tip of the antenna. If you add it, it will be easy to find even at night.

[0014] FIG. 9 shows another embodiment of the present invention, in which the above structure has buoyancy in the radio itself. This floating shoulder portable radio device has a structure that allows it to float on its own. In contrast, rather than reducing weight/volume, we try to create products with the same functions but smaller volumes. The radio itself has a pressure that operates at a certain water pressure (for example, at a depth of 1 m to 2 m). It has a built-in carbon dioxide gas cylinder with a power valve, and a float bladder is attached to the end of the valve. If you drop this into water, of course it will sink because it is heavier than water, but it will sink to a certain depth. As the water pressure rises, the pressure valve of the radio is activated to release carbon dioxide gas into the swim bladder. The radio floats to the surface. If you adopt this structure, the size of the radio will be considerably smaller. It becomes possible to create and improve usability. Naturally, the radio has a pressure valve that operates. It has a waterproof structure that can withstand the pressure of water depth + α.

[0015]

[Effect of the idea]

According to this idea, in portable radio equipment, etc., the average specific gravity of the body can be reduced to less than 1.0. Even if it falls into the water, part of the aircraft will remain above the water surface. It is easy to collect. In addition, the water pressure in the radio itself causes carbon dioxide to fill the swim bladder. The structure allows the wireless device to be made considerably smaller in size. Ease of use has been improved, and even after dropping it, it floats to the surface of the water, making it easy to retrieve. It becomes possible.

[0016] In addition, this idea has a waterproof structure in each part of the case to prevent water from seeping inside. Therefore, there is no problem with the internal circuit due to water getting wet, and it can be dropped into seawater or dirt. All you have to do is wash it with clean water, and it is also suitable for use in the rain.

[Brief explanation of drawings]

[Figure 1] External view of portable radio device

[Figure 2] Cross-sectional view of the case

[Figure 3] Structural diagram of the adjustment shaft part

[Figure 4] Cross-sectional view of push switch section

[Figure 5] Cross-sectional view with speaker installed

[Figure 6] Cross-sectional view with microphone installed

[Figure 7] Cross-sectional view of antenna mounting part

[Figure 8] Diagram showing the underwater posture of the equipment

[Figure 9] Diagram showing the operation of a floating portable radio device

[Explanation of symbols]

a Case seam b Adjustment shaft b-1 Knob b-2 shaft c Push button switch d speaker e Microphone f Antenna plug part

Claims (1)

[Scope of utility model registration request] Claim 1: The seams of the case, the adjustment shaft, the push switch, the speaker, the microphone, and the antenna connector are made waterproof, and the average specific gravity of the aircraft is less than 1.0 at least underwater. A structure of a portable radio device characterized by the following.