JPS5952995A - Portable stereo sound reproduction device - Google Patents

Abstract

PURPOSE:To form a superminiature stereo sound reproducing device having a radio built-in while keeping balance of whole device by providing a cassette cover that covers vertical width of the cabinet and providing oblong sound emitting parts having nearly the same size as the vertical dimension of the cassette cover on both sides of the cassette cover of the cabinet and housing oblong speakers in the respective sound emitting parts. CONSTITUTION:A cassette fitting part 2 is provided at the center part in front of the body 1 of a cabinet and sound emitting parts 3 are provided on both sides of it. A cassette cover 4 that can be freely opened and closed is provided on the cassette fitting part 2. The size of the cassette cover 4 is nearly the same as the vertical width of the cabinet body 1 and in a closed state when it is looked from the front, the cover covers nearly allover the cabinet body 1. A group of cassette operating buttons 5 are arranged at a position exposed from the cassette cover 4. Each sound emitting part is long lengthways and nearly the same in size with vertical dimension of the cassette cover 4 as a whole. A rectangular sound emitting hole 7 is formed in the front panel 6 of the cabinet 4. A speaker 8 is housed inside and a net 9 is provided in front of it.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a portable stereo sound reproduction device such as a cassette tape recorder, a radio cassette tape recorder, etc., which is compact as a whole and enables stereo reproduction using speakers. It is something.

Conventional configurations and their problems In recent years, portable stereo sound playback devices have been widely used, ranging from large stereo types for cassette tape recorders with radios to ultra-compact portable stereo sound playback devices known as headphone audio. has been done. Among these, it is common knowledge that stereo playback is listened to through headphones, especially in playback devices that are aimed at miniaturization. For this reason, most of these systems do not have a built-in speaker, and even if they do have a speaker, moral reproduction can only be performed with one speaker.

As described above, the conventional small-sized portable stereo sound reproduction device had a major drawback in that it was not possible to listen to stereo sound without using a headbond, and therefore its usage was naturally limited. .

OBJECTS OF THE INVENTION It is an object of the present invention to solve such conventional problems and to provide a portable stereo sound reproducing device which is ultra-compact and allows stereo sound to be heard by using speakers without using a headphone.

Structure of the Invention The present invention provides a cassette lid having a size that substantially covers the vertical width of the cabinet at the center of the front face of the cabinet, and a cassette lid having a size approximately the same as the vertical dimension of the cassette lid on both sides of the cassette lid of the cabinet. A vertically elongated sound emitting section is provided, and the internal Kk1. of each sound emitting section is provided. Each house houses a long speaker. If you do this, the vertical dimension of the cabinet will be less than the width of the cassette lid7>
) At the same time, the vertically elongated speakers placed on the left and right sides of the cassette lid minimize the width of the cabinet in the left and right direction, making it possible to reproduce stereo sound using speakers instead of headphones.

DESCRIPTION OF THE EMBODIMENTS FIGS. 1 to 3 show an embodiment of the porta-pull type stereo sound reproducing apparatus of the present invention. A sound emitting section 3 is provided on both sides of. The cassette mounting part 2 is provided with a cassette lid 4 that can be opened and closed.The cassette lid 14 has a width that is approximately the same as the vertical width of the cabinet body 1, and has a shape that almost covers the cabinet body 1 when it is closed when viewed from the front. The foot and cassette operation button group 5 are arranged at positions exposed from the cassette lid 4. Each of the sound emitting parts 3
The cabinet 4 has a rectangular sound emitting hole 7 formed in the front panel 6 of the cabinet 4, and a speaker 8 is housed inside the cabinet 4. A net 9 is provided in front of it. The cassette lid 4 is provided with a dial display window 11 at a position offset to one side along with a tape winding confirmation window 1o, and around the dial display window 11 there is a dial scale etc. on the back side. A predetermined display 12 is provided so that the internal pointer 13 can be seen through the dial display viewing window 11. Note that this pointer 13 is driven by operating a dial operating knob 14.

As shown in FIG. 2 when the cassette lid 4 is opened, the area covered by the cassette lid 4 includes four cassette storage parts 15.
A predetermined cassette driving device such as a reel shaft 16 is provided here, and the cassette 13 can be seen through a long hole 17 formed in the front plate 6 of the cabinet body 1. Note that the position of the long hole 17 corresponds to the dial display transparent window 11 provided in the cassette lid 4,
Pointer 13 provided inside the front plate 6 of this cabinet body 1
This allows the cassette lid 4 to be seen through from the outside even when the cassette lid 4 is closed.

The speaker 8 has a rectangular plane diaphragm 18 as shown in FIG.
It consists of a rectangular flat speaker with
A voice coil section 19 is provided at an offset position on the rear surface. Frames 20 provided at both ends of the speaker 8 are attached to bosses 21 provided on the front plate 6 of the cabinet body 1 with screws 22. Note that 23 is a decoration made of aluminum. Here, although not shown, the speaker 8
By arranging other parts such as dial components in the back space of the flat plate part except for the voice coil part 19, the narrow space inside the cabinet body 1 can be effectively utilized.

The outputs of the stereo reproduction means of the tape recorder section and the stereo reproduction means of the radio reception section are power amplified and applied to the pair of speakers 8.

In this way, as long as the cassette tape is stereo-recorded or the radio receiver receives stereo broadcasts, it becomes possible to reproduce stereo sound from the pair of left and right speakers 8. Therefore, it can be installed in a very small space next to the bed when sleeping, and the sound from the speaker 8 allows you to directly listen to stereo sound, so it does not disturb your sleep like when using headphones. You won't have to worry about it.

Effects of the Invention The present invention provides a cassette lid shaped to cover the vertical width of the cabinet at the center of the front face of the cabinet, and
On both sides of the cassette lid of the cabinet, a vertically elongated sound emitting part with approximately the same dimensions as the top and bottom dimensions of the cassette lid is provided, and each of the vertically elongated speakers is housed inside the sound emitting part. While reducing the overall size of the device by minimizing dimensions in both the vertical and horizontal directions, it is possible to reproduce stereo sound using speakers without using headphones. Furthermore, by providing a see-through window for dial display as well as a see-through window for tape winding confirmation on the cassette lid, it is possible to maintain the overall balance of the device in a narrow space and with sound emitting sections from speakers on both sides of the cassette and lid. It becomes possible to realize an ultra-compact stereo sound reproduction device with a radio. Further, if a speaker having a vertically elongated flat diaphragm is used, the depth of the cabinet can be made sufficiently small.

[Brief explanation of the drawing]

Fig. 1 is an overall perspective view with a part cut away of an embodiment of the present invention, Fig. 2 is a partial perspective view of the same embodiment with the cassette lid open, and Fig. 3 is a speaker of the same embodiment. FIG. 1... Cabinet body, 2... Cassette mounting section. 3...Sound emitting section, 4...Cassette lid, 6...Front panel of cabinet, 7...
...Sound emission hole, 8...Speaker, 10...
・See-through window for tape winding confirmation, 11...See-through window for dial display, 18... Rectangular plane diaphragm for speed and force. 19...Voice coil section. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure J γ Figure 2

Claims (3)

[Claims] (1) A cassette lid that can be opened and closed and has a shape that substantially covers the vertical width of the cabinet is provided in the center of the front of the cabinet, and on both sides of the cassette lid of the cabinet, the vertical dimension is approximately the same as that of the cassette lid. 1. A portable stereo sound reproducing device, characterized in that a vertically elongated sound emitting section is provided, and a vertically elongated speaker is housed inside each of the sound emitting sections. (2) Claim (1) in which the cassette lid is provided with a see-through window for tape winding confirmation and a see-through window for dial display, and a dial device is provided in the cabinet located inside the see-through window for dial display. Portable stereo sound reproduction device as described in 2. (3) The portable stereo sound reproducing device according to claim 1 or 2, which uses a speaker having a rectangular plane diaphragm and having a voice coil part protruding from a part of the rear part of the speaker.