JPH10199222A - Magnetic record reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable visual check of an indicator label by lighting an indicator label on the back of the tape cassette loaded in apparatus by using back light light sources for a liquid crystal display means to display operation state of the apparatus, in the case that description content of a tape cassette label is checked visually, after the magnetic tape cassette is loaded into the magnetic record reproducing apparatus. SOLUTION: Magnetic record reproducing apparatus, where a magnetic tape cassette 2 is loaded and contained in a conveying and loading position 9b, displays the current operation content of the apparatus by operating a liquid crystal display element 8, when the apparatus is in the operating state. That is, back light light sources 8b and 8b' of the liquid crystal element 8 are also lighted, and the light is led to a light guiding plate 8c to irradiate light on a liquid crystal panel 8a. And the light from the light sources 8b and 8b', through openings 8e and 8e' provided on the back lid 8d, also irradiates an indicator label on the back of the loaded tape cassette 2 through an opening window 6d of the vertical part 6c of a tape cassette guide piece 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic recording / reproducing apparatus in which, after a magnetic tape cassette has been loaded into a magnetic recording / reproducing apparatus, a description of recorded contents at least on a back label of the magnetic tape cassette can be easily visually recognized. is there.

[0002]

2. Description of the Related Art As an electronic device for recording and reproducing various video, audio and data signals, a magnetic tape cassette containing a magnetic tape in a cassette is loaded into a recording / reproducing device. 2. Description of the Related Art A magnetic recording / reproducing apparatus which records and reproduces video and audio signals by running closely on a head is used. The specific structure or configuration of the magnetic tape cassette and the recording / reproducing apparatus will be described with reference to FIGS. 4 to 9, and the same parts are denoted by the same reference numerals.

In this magnetic recording / reproducing apparatus, a video cassette tape recorder (VCR) for recording / reproducing a television signal is used.
As shown in FIG. 4, a magnetic tape cassette 50 is wound around a supply reel 51 and a take-up reel 52 and is housed in a substantially rectangular housing 53. A door 54 is provided on the front of the housing 53,
At the time of mounting on the CR, the door 54 is opened and the magnetic tape is pulled out. This magnetic tape cassette 50
In order to display the contents recorded on the magnetic tape, a back label 55 is attached to the back of the housing 53 (the surface facing the door 54) and an upper label 56 is attached to the top.

[0004] The magnetic tape cassette 50 is conveyed into the VCR 60 from a magnetic tape cassette insertion slot 61 provided on the front of the VCR 60 as shown in FIG. An example of a device for transporting the magnetic tape cassette 50 inserted into the VCR 60 will be described with reference to a cut side view of FIG.

A cassette insertion door 63 having a fixed shaft 62 is provided at the magnetic tape cassette insertion opening 61 on the front of the VCR 60 above the insertion opening 61 in the drawing. Move. Insertion slot 61
A cassette guide piece 64 for guiding the magnetic tape cassette 50 in a plane at substantially the same height as the lower edge of the VCR 60 is provided.
A cassette holder 65 for transporting the magnetic tape cassette 50 is provided at the back of the housing. Projections 66, 6 are provided on the side of the cassette holder 65.
The projections 66 and 67 are supported and guided by the substantially L-shaped guide grooves 69 and 70 provided on the guide plate 68, so that the cassette holder 65 slides. This guide plate 6
8 is fixed to a fixing piece 71 in the VCR 60. The cassette holder 65 includes a first gear 74 mounted on a rotating shaft of an electric motor 73 mounted on a chassis 72 on which the operating power of the VCR 60, a signal processing circuit, and the like are mounted. Driven by the second to fourth gears 75, 76, 77,
It slides guided by 9,70. The third of these gears
Is composed of two coaxially provided gears having different diameters. The large diameter gear meshes with the second gear 75, and the small diameter gear meshes with the fourth gear 77. doing. 4th
The gear 77 has a sliding drive piece 78 coaxially fixed, and the slide drive piece 78 has an elongated hole 80 through which a drive shaft 79 provided on the cassette holder 65 fits and slides. Has been cut. The cassette insertion slot 6 of the chassis 72
On one side, a liquid crystal display means 81 is attached, and on the front surface of the liquid crystal display means 81, a display portion 82 formed of a transparent member is provided. Operation states such as current time, recording operation, normal / high-speed / still reproduction operation, remaining tape, and recording reservation can be displayed.

In the VCR 60 having such a structure, when the magnetic tape cassette 50 is inserted into the insertion slot 61 in the direction of the arrow in the drawing, the cassette insertion door 63 is pushed by the magnetic tape cassette 50 and the fixed shaft 62 is used as a fulcrum in the drawing. When the magnetic tape cassette 50 is rotated upward and the insertion of the magnetic tape cassette 50 is continued, the cassette 50 slides on the cassette guide piece 64 and is mounted on the cassette holder 65. Magnetic tape cassette 5
0 is inserted into a predetermined position of the cassette holder 65, it is detected by the insertion detecting means of the magnetic tape cassette 50 (not shown), and the electric motor 73 rotates, and Cassette holder 65
The rotation is transmitted to the drive shaft 79. That is, the fourth gear 77 is rotated clockwise from the state shown in FIG.
8 rotates in the same manner, the driving force is applied to the cassette holder 65.
Of the cassette holder 6 while sliding in the elongated hole 80 of the sliding drive piece 78.
5 is moved along the guide grooves 69 and 70, and is conveyed to a position 65a in the drawing, which is a position where the loading of the magnetic tape cassette 50 is completed. The door 54 is opened by a cassette door opener (not shown) on the way. When the completion of loading of the tape cassette 50 is detected by the loading completion detecting means (not shown), the electric motor 73 stops rotating, and the magnetic tape is pulled out from the magnetic tape cassette 50 by the tape loading means (not shown) and rotated. The head means 83 is turned.

In the VCR 60 having such a structure and operation, after the magnetic tape cassette 50 is loaded into the VCR 60, that is, after the cassette holder 65 is transported to the position of 65a in the drawing, the operation power supply of the VCR 60 is automatically turned on. It is general that the loading of the magnetic tape cassette 50 is indicated on the display means 81 by inserting the magnetic tape cassette 50. In order to confirm the recorded contents of the loaded magnetic tape cassette 50, a description will be given with reference to FIG. As described above, there is no other way but to read or check the contents written on the back label 55 or the top label 56 of the magnetic tape cassette 50. When checking the rear and upper labels 55 and 56 of the tape cassette 50, the user can push up the cassette insertion door 63 with his / her finger or the like as shown in FIG. 7 or visually check the tape loaded in the VCR 60. Cassette 5
It is performed to discharge 0 once and confirm. However, such a method is very inconvenient for the user of the VCR 60, and when viewing the tape cassette 50 loaded in the VCR 60, the cassette guide piece 64 near the lower part of the cassette insertion slot 61 of the VCR 60 is Back label 5 to intervene between
There was a problem that it was difficult to confirm No. 5.

As a method for solving this problem, as shown in FIG. 8, a cassette guide piece 64 is provided with an inclined surface 91 having substantially the same width as the rear or upper labels 55, 56 of the tape cassette 50, or A method of facilitating the visual recognition of the rear or upper labels 55 and 56 of the tape cassette 50 by molding the transparent member 63 ′ from substantially the center to the lower part of the cassette insertion door 63 is adopted. Even if the inclined portion 91 is provided on the cassette guide piece 64 as shown in FIG. 9A, the operation of pushing up the cassette insertion door 63 by a human finger is not canceled as shown in FIG. 9A, and the cassette as shown in FIG. Even when the transparent member 63 'is used for a part of the insertion door 63, as shown in FIG. 9B, the rear bell 55 of the tape cassette 50 is visible even if the rear bell 55 is visible. Sure is not possible, top label 56
In order to be able to see the
3 must be formed entirely of a transparent member. When the entire cassette insertion door 63 is made of a transparent material, the cassette holder, the loading mechanism, the electric circuit, and the like inside the VCR 60 are always visually recognized through the cassette insertion door 63,
It is not a preferable state from the viewpoint of design and commercial value.

In general, magnetic recording / reproducing devices are generally installed near a television receiver, and are often used by being housed in a television stand on which the television receiver is mounted. Even if the cassette insertion door is made of a transparent member or the door is opened, it is not possible to obtain a sufficient amount of illumination light for visually recognizing the display label of the magnetic tape cassette in the internal storage position of the magnetic recording / reproducing apparatus. For this purpose, a method of facilitating the visual recognition of the display label is provided by providing an illuminating means for illuminating only the display label of the magnetic tape set, but the illuminating means causes an increase in cost, and when the light source is damaged. Need to consider the ease of replacement of
Not practical.

[0010]

In a conventional magnetic recording / reproducing apparatus, when a magnetic tape cassette is loaded in the apparatus, visual recognition of the contents written on a label of the cassette is provided at a cassette insertion slot of the apparatus. There is a problem that if the operation is performed with the door opened, the amount of illumination in the device is insufficient and the label notation cannot be sufficiently confirmed.

[0011]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and is intended for a case in which after a magnetic tape cassette is loaded into a magnetic recording / reproducing apparatus, the contents written on a label of the tape cassette are visually recognized. Using a backlight light source of liquid crystal display means for displaying the operation state of the magnetic recording / reproducing device, the display label on at least the back of the magnetic tape cassette loaded in the device is illuminated so that the display label can be visually recognized. A magnetic recording / reproducing apparatus is provided.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A magnetic recording / reproducing apparatus is provided with a display means for indicating the current operating state of the apparatus and the contents of a reservation for performing a reservation recording. As the operation display means, a liquid crystal display element is often used. This liquid crystal display element has a built-in backlight light source for easily distinguishing characters and figures to be displayed, and for stabilizing brightness and contrast by an external light amount. The present invention has been made by utilizing the amount of light from a backlight light source incorporated in the liquid crystal display element.

First, the structure of the liquid crystal display means will be described with reference to FIG.
This will be described with reference to the cross-sectional view of FIG. The liquid crystal panel 101 is attached to a fixture 102 for fixing the top, bottom, left and right of the panel,
A backlight light source 103 such as a cold-cathode tube is attached to the fixture 102 at positions located on the left and right of the liquid crystal panel 101, and a light guide plate 104 is attached so as to be sandwiched between the light sources 103. A back cover 105 is fixed by a frame 106 to the back of the camera. The liquid crystal panel 101 and the backlight light source 103 are supplied with a signal and power from a drive signal supply source (not shown), and light from the light source 103 is guided into the light guide plate 104 to irradiate the liquid crystal panel 101 from the back. In response to the drive signal, the emitted light is controlled to transmit light at the intersection of X and Y of the liquid crystal panel 101 to display characters and figures.

A liquid crystal display having such a structure is used in a magnetic recording / reproducing apparatus, and a specific configuration of the present invention will be described with reference to FIG. This will be described with reference to the drawings.

An insertion slot 3 for a magnetic tape cassette 2 is provided at the front of the external housing 1 of the magnetic recording / reproducing apparatus, and the insertion slot 3 is provided with an insertion door 5 having a fixed shaft 4 at an upper end. . Inside the housing 1 at the lower end of the insertion slot 3, a tape cassette guide piece 6 is provided, and the guide piece 6 holds the magnetic tape cassette 2 when the magnetic tape cassette 2 is inserted from the insertion slot 3. It comprises a horizontal portion 6a for guiding in the horizontal direction, an inclined portion 6b for guiding obliquely downward, and a vertical portion 6c for guiding in the vertical direction. An opening window 6d is provided in the vertical portion 6c. An operation display window 7 is provided below the insertion slot 3 of the magnetic tape cassette 2 of the housing 1 by a transparent member, and a liquid crystal display element 8 is attached to the back of the operation display window 7. The liquid crystal display element 8 includes at least a liquid crystal panel 8a, backlight light sources 8b and 8b ', and backlight light sources 8b and 8b.
b 'and a light guide plate 8c located on the back of the liquid crystal panel 8a, and a back cover 8d. The back cover 8d has an opening at a portion where the backlight light sources 8b and 8b' are located. Portions 8e and 8e 'are open. A cassette holder 9 is provided for loading and transporting the magnetic tape cassette 2 inserted from the magnetic tape cassette insertion slot 3 of the housing 1 and loading the cassette at a predetermined position. By means, it is conveyed along the guide piece 6 from the position of the frame indicated by the dashed line 9a in the figure to the position of 9b in the figure.

In the magnetic recording / reproducing apparatus having such a configuration, when the magnetic tape cassette 2 is loaded and stored at the transfer loading position 9b and the magnetic recording / reproducing apparatus is in an operating state, the liquid crystal display element 8 is also operated, and the magnetic recording / reproducing apparatus operates. Displays the current operation of the recording / playback device. That is, the backlight sources 8b and 8b 'of the liquid crystal display element 8 are also turned on, and the light is guided to the light guide plate 8c to irradiate the liquid crystal panel 8a.
The light from the backlight sources 8b and 8b 'is also transmitted from the openings 8e and 8e' provided in the back cover 8d to the vertical portion 6c of the guide piece 6.
The rear surface of the loaded magnetic tape cassette 2 is irradiated through the opening window 6d. This state will be described with reference to FIG. 2 showing the relationship between the liquid crystal display element and the magnetic tape cassette when viewed from the display reading side of the liquid crystal panel 8a of the liquid crystal display element 8 at an angle different from that in FIG. The light from the backlight sources 8b and 8b 'irradiates the display labels provided on the back surface of the magnetic tape cassette 2 from the openings 8e and 8e' provided in the back cover 8d as described above, and inserts the magnetic tape cassette. When the user opens the insertion opening door 5 of the opening 3 by pushing it open with a finger, for example, and visually recognizes the rear label 2a of the loaded magnetic tape cassette 2, the label 2a is used as the backlight light sources 8b, 8b. Illuminated and the contents can be read satisfactorily, and it is possible to eliminate the difficulty of visually recognizing the display label of the magnetic tape cassette due to insufficient illumination in the magnetic recording and reproducing device as in the past. Was also eliminates the need to provide special lighting means for viewing the label of the magnetic tape cassette.

Next, another embodiment of the present invention will be described with reference to FIG. This drawing is a diagram viewed from the same direction as FIG. 2, and the same portions are denoted by the same reference numerals. Generally, light from the backlight sources 8b and 8b 'of the liquid crystal display element 8 is
It is desirable that the liquid crystal panel 8a be efficiently illuminated and the total amount of light be illuminated.
Further, the inside of the back cover 8d is mirror-finished.
In such a state, the openings 8e, 8
By providing e ′, the amount of light to the liquid crystal panel 8a is reduced, and the brightness and contrast of characters and figures displayed on the liquid crystal panel 8a are reduced. 2 except when the rear label 2a is visually recognized.
b, 8b 'to illuminate the liquid crystal panel 8a sufficiently, and illuminate the rear label 2a with light from the backlight light sources 8b, 8b' only when the rear label 2a is viewed. A blinder 10 for opening and closing the openings 8e and 8e 'of the lid 8d is provided. This blinder 10 is provided with windows 10a, 10a 'corresponding to the openings 8e, 8e' provided in the back cover 8d of the liquid crystal display element 8, and is brought into close contact with the back cover 8d. It is slidably mounted on the left and right as shown by. The blinder 10 is set by means (not shown) so as to slide in conjunction with opening and closing of the magnetic tape cassette insertion door 5. When the magnetic tape cassette insertion door is closed, the liquid crystal display element 8 is closed. At the position to close the opening 8e of the back cover 8d. When the magnetic tape cassette insertion door 5 is opened from this state, the blinder 10
a, 10a 'are slid so as to coincide with the windows 8e, 8e' of the back cover 8d, and the light of the backlight light source 8b is applied to the rear label 2a of the magnetic tape cassette 2. That is,
During various operations of the magnetic recording / reproducing apparatus, since the magnetic tape cassette insertion door 5 is in a closed state, the liquid crystal display element 8 is driven by the maximum amount of light from the backlight light sources 8b and 8b '. When viewing the back label 2a of the magnetic tape cassette 2 loaded and stored therein, it is not necessary to check the display of the liquid crystal display element 8, so the backlight light sources 8b, 8 of the liquid crystal display element 8 are required.
Although the amount of light from b ′ is reduced to irradiate the liquid crystal panel 8a, the rear label 2a of the magnetic tape cassette 2 can be illuminated so that the label can be easily viewed. When the magnetic tape cassette insertion door 5 is closed after the visual recognition 2a is completed, the blinder 10 is returned to the original state (the state shown by the solid line in the figure), and the backlight source of the liquid crystal display element 8 is turned on. The entire amount of light from 8b and 8b 'is applied to the liquid crystal panel 8a, so that the original brightness and contrast can be obtained.

In the other embodiment of the present invention, the structure in which the blinder 10 slides in the left-right direction has been described.
A door is provided corresponding to each of the openings 8e and 8e 'of the back cover 8d of the liquid crystal display element 8, and the door is opened and closed in conjunction with the magnetic tape cassette insertion door of the magnetic recording / reproducing apparatus.
Further, the insides of these doors are mirror-finished, and the liquid crystal display element 8
By reflecting the amount of light from the backlight light source 8b on its mirror surface, it is possible to increase the amount of light to the rear label 2a of the magnetic tape cassette 2 and expand the irradiation range.

In the above description of the present invention, when visually recognizing the magnetic tape cassette loaded and stored in the magnetic recording / reproducing device, the user opens and closes the magnetic tape cassette insertion door of the magnetic recording / reproducing device with a finger. However, it is apparent that the present invention can also be realized by interlocking with other means for opening and closing the magnetic tape cassette insertion door.

[0020]

As described above, according to the present invention, a part of the back cover near the backlight light source of the liquid crystal display element provided in the magnetic recording / reproducing apparatus is opened, and the back is opened from the opening. By irradiating the light of the light source onto the back label of the magnetic tape cassette loaded in the apparatus, it is possible to provide a magnetic recording / reproducing apparatus in which the written contents of the back label can be easily visually recognized.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional perspective view of the vicinity of a magnetic tape cassette insertion slot of a magnetic recording / reproducing apparatus according to the present invention.

FIG. 2 is a perspective view showing a relationship between a liquid crystal display element and a magnetic tape cassette of the magnetic recording / reproducing apparatus according to the present invention.

FIG. 3 is a perspective view showing another embodiment according to the present invention.

FIG. 4 is a perspective view showing the structure of a magnetic tape cassette.

FIG. 5 is a perspective view showing a relationship between a conventional magnetic recording / reproducing device and a magnetic tape cassette.

FIG. 6 is a side view showing a magnetic tape cassette conveying means in a conventional magnetic recording / reproducing apparatus.

FIG. 7 is a side view showing a visual recognition state after a magnetic tape cassette is loaded in a conventional magnetic recording / reproducing apparatus.

FIG. 8 is a perspective view showing a configuration of a magnetic tape cassette insertion guide piece of a conventional magnetic recording / reproducing apparatus.

FIG. 9 is a side view showing a visually recognized state after a magnetic tape cassette has been loaded into a conventional improved magnetic recording / reproducing apparatus.

FIG. 10 is a sectional view showing a structure of a liquid crystal display element.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Housing of magnetic recording / reproducing apparatus 2 ... Magnetic tape cassette 2a ... Back label 3 ... Magnetic tape cassette insertion opening 4 ... Fixed shaft 5 ... Magnetic tape cassette insertion opening door 6 ... Tape cassette guide piece 7 ... Operation display window 8 ... Liquid crystal display element 8a ... Liquid crystal panel 8b, 8b '... Backlight light source 8c ... Light guide plate 8d ... Back cover 8e, 8e' ... Opening 9 ... Transportation means for magnetic tape cassette.

Claims (3)

[Claims] 1. A magnetic recording / reproducing apparatus for recording / reproducing by loading a magnetic tape cassette having a label on at least a back surface into a predetermined position therein, comprising: a backlight light source; and a back cover for covering the backlight light source. Liquid crystal display means for displaying an operation state of the magnetic recording / reproducing device; provided on a back cover of the liquid crystal display means in correspondence with the backlight light source, and a back label of a magnetic tape cassette loaded at the predetermined position, A magnetic recording / reproducing apparatus, comprising: an opening configured to be irradiated with a backlight light source. 2. A magnetic recording / reproducing apparatus for performing recording / reproduction by inserting a magnetic tape cassette having at least a label on a back surface thereof through a magnetic tape cassette insertion slot provided in a housing, loading the magnetic tape cassette into a predetermined position inside the housing, and performing recording / reproduction. An operating state of the magnetic recording / reproducing apparatus, comprising: a tape cassette insertion opening door provided in the housing to open and close the magnetic tape cassette insertion opening; a backlight light source; and a housing covering the backlight light source. And an opening provided in the lid of the liquid crystal display corresponding to the backlight light source, and operates in conjunction with the opening and closing operation of the tape cassette insertion door, and the door is opened. When the opening is opened, the back light source is irradiated through the opening onto the back label of the magnetic tape cassette loaded at the predetermined position, and the tape cassette is opened. Magnetic recording and reproducing apparatus characterized by comprising a an opening closing means for closing the opening when the inlet door is closed. 3. The opening / closing means has a grinder having a window formed corresponding to the opening, and the blinder is attached to the lid of the backlight light source in conjunction with the opening / closing operation of the tape cassette insertion door. 3. The magnetic recording / reproducing apparatus according to claim 2, wherein the magnetic recording / reproducing apparatus is configured to slide with respect to the magnetic recording / reproducing apparatus.