JPS6225021Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention is a novel television receiver, in particular, a cabinet in which a flat cathode ray tube is used as the picture tube, and the entire receiver including the flat cathode ray tube has a flat, substantially rectangular parallelepiped shape. This is a new type of television that contributes to further miniaturization by effectively utilizing the space created between the funnel of the flat cathode ray tube and the front of the cabinet as a movement area for the pointer. The aim is to provide a television receiver.

BACKGROUND TECHNOLOGY AND PROBLEMS There is a very small flat type television receiver that uses a flat cathode ray tube as a television receiver and houses the receiver in a flat rectangular parallelepiped-shaped cabinet that can fit in the palm of your hand. There is a demand for further miniaturization of this type of television receiver. FIG. 1 shows an example of a conventional flat type television receiver. In this television receiver a, the reception channel is changed by rotating a small disk-shaped tuning knob c placed in the upper right corner of the cabinet b. This is indicated by a pointer e that moves along a tuning scale d as the tuning knob c rotates. Such a tuning mechanism is very suitable for television receivers where the receiver must be placed in a thin cabinet. However, since it is necessary to provide an area in which the pointer e moves, conventionally, a part of the space within the cabinet must be specially allocated as an area in which the pointer e moves. This has been a major obstacle to further downsizing television receivers.

In addition, in the television receiver a shown in FIG. 1, the movement area of the pointer e and the tuning scale d
is placed on the side of the screen f (on the right side when viewed from the front), which is a major reason why the width of the cabinet has to be unnecessarily large compared to the size of the screen. Since the pointer e was set to move along the side (vertical side), which is the shorter side of the screen f, by approximately the same length as that side, the stroke of the pointer e was inevitably As a result, the amount of movement of the pointer for one channel is reduced, which poses the problem of difficulty in tuning.

Purpose of the invention This invention was made to solve the above problem, and the moving area of the pointer that displays the tuning channel is provided in the essentially useless space between the funnel of the flat cathode ray tube and the front of the cabinet. The purpose is to increase the packaging density of the device, to prevent the width of the cabinet from becoming unnecessarily large compared to the screen size, and to further increase the movement stroke of the pointer. It is.

Summary of the invention In order to achieve the above object, the television receiver of the invention is designed so that the front surface of the image reproducing unit, which is integrally or integrally connected to the tube as a picture tube via a funnel, is approximately parallel to the axis of the tube. A television receiver using a flat cathode ray tube, in which substantially the entire receiver including the flat cathode ray tube is housed in a flat, substantially rectangular parallelepiped-shaped cabinet, which is moved in conjunction with the operation of changing the tuning channel. A moving region of a pointer indicating a tuning channel is provided in a space formed between a front surface of the funnel and the front surface of the cabinet, which slopes backward from the front surface of the image reproducing section toward the tube side. It is characterized by this.

Therefore, according to the present invention, the movement area for the pointer for channel display is provided in the space that inevitably occurs between the front surface of the cabinet and the funnel of the cathode ray tube. There is no need to specially allocate a limited space inside the device, increasing the packaging density. In addition, the moving area for the pointer can be provided at the bottom of the screen so that the pointer can be moved along the long side of the screen, so that the width of the cabinet is not too large compared to the size of the screen. In addition, the movement stroke of the pointer can be made relatively large.

Embodiments Hereinafter, the television receiver of the present invention will be described in detail according to embodiments shown in the accompanying drawings.

FIGS. 2 to 7 show an example of the implementation of the television receiver of the present invention.

In the drawings, reference numeral 1 denotes a cabinet in which almost the entire receiver is housed, and is shaped like a flat rectangular parallelepiped.
It is constructed by overlapping the front half 2 and the rear half 3 at their peripheral edges and joining them together.

Reference numeral 4 denotes a protrusion formed on the front surface of the front half 2 so as to surround approximately the upper half thereof, and a screen frame 6 and a filter 7 are arranged in an area 5 surrounded by the protrusion 4. In the area 5 of the front half 2, there are a screen window 10 from which the front panel 9 of the flat cathode ray tube 8 faces, a rectangular channel display window 11 formed along the lower side of the screen window 10, etc. No necessary windows. The screen frame 6 arranged in the area 5 has a screen window 12 having the same shape and approximately the same size as the screen window 10 at a position corresponding to the screen window 10.
is formed, and a scale 13 provided at a position corresponding to the channel display window 11 and other necessary displays are provided. By screwing the filter 7 to the screen frame 6 while stacking it, the screen frame 6 and the filter 7 are attached to the front half 2.
It is attached to the upper half 5 of the.

A part of the volume control knob 14 is inserted through the right side of the front half 2 of the cabinet 1 when viewed from the front (hereinafter, the right side or left side refers to the right side or left side when viewed from the front). A hole 15 through which the switch 18 is projected, a hole 17 through which the tuning knob 16 is partially passed through and projected outside, and a hole 19 through which the switch 18 is exposed to the outside are formed. A substantially annular antenna holding piece 20 is formed protruding from the rear side of the front half 2, and is provided on the upper right side to hold the middle part of the rod antenna 21.

The flat CRT 8, with its front panel 9 facing the screen window 10 of the front half 2, has a side shape as shown in Fig. 3. The flat CRT 8 has an image reproducing section 24 connected to a tube 22 via a funnel 23, which is composed of the front panel 9 facing the screen window 10 and a screen panel 25 located behind it. Phosphors that receive an electron beam and emit light are provided on the inner surface of the screen panel 25, and an image generated on the inner surface is viewed from the front through the front panel 9. The front surface of the front panel 9 is approximately parallel to the axis of the tube 22, while the back surface of the screen panel 25 is inclined from the joint with the funnel 23 upward so as to approach the front side. The funnel 23 is formed so as to become gradually thinner from the image reproducing section 24 toward the tube 22 side.
The rear surface of the funnel 23 is inclined so as to approach the front as it goes from the screen panel 25 to the tube 22 side, while the front surface of the funnel 23 is inclined so as to approach the rear as it goes from the front panel 9 to the tube 22 side. A deflection coil 26 is provided around the portion extending from approximately the center of the funnel 23 to approximately the center of the tube 22. 27, 27, ... are terminals of the electron gun formed to protrude from the end face of the tube 22.

The flat cathode ray tube 8 has the upper end of the tube 22 welded to the funnel 23, the screen panel 25 and the front panel 9 are bonded to each other, and the image reproduction section 24 is formed separately on the funnel 23 and then bonded. formed by. However, it goes without saying that these may be formed integrally.

In such a cathode ray tube 8, the front panel 9 faces the screen window 10 of the front half 2, and the axis of the tube 22 is parallel to the front and rear surfaces of the cabinet 1 (i.e., the surfaces of the front half 2 and rear half 3). It is attached to the front half 2 by a cathode ray tube holder 28 in such an orientation. Therefore, the front half 2 and the funnel 2 forming the front of the cabinet 1
3 (particularly the upper half), a space 29 is naturally formed in the shape of a right triangle when viewed from the side. and,
In the present invention, the space 29 is utilized as a movement area for the pointer 30 for displaying the tuning channel. The tuning mechanism including the pointer 30 will be explained later.

The cathode ray tube holder 28 is formed by bending a band-shaped metal plate into a substantially U-shape, and plate springs 31, 31 are fixed to the intermediate portion thereof to press the image reproduction section 24 of the flat cathode ray tube 8 toward the front half 2 side. There is. and,
By pressing the image reproducing section 24 onto the front half 2 from the rear side with the holder 28 and screwing the screw pieces 32, 32 at the tip of the holder 28 to the front half 2, the image reproducing section of the flat CRT 8 is removed. 24 is fixed. Further, a CRT socket 33 is attached to the terminals 27, 27, . . . that protrude from the tube 22 of the flat cathode ray tube 8. The CRT socket 33 is attached to a substrate 35 on which a flyback transformer 34 is provided, and the substrate 35 is attached to the inner surface of the front half 2 by appropriate means. 36 is
CRT socket 33 and flyback transformer 34
It is a flexible circuit board that electrically connects between

37 is a dial drum that rotates the shaft of the tuning variable resistor 38, and the tuning knob 1
When the variable resistor 6 rotates, it receives the rotational force through the thread 39, rotates, and plays the role of changing the resistance value of the variable resistor 38. The dial drum 37 is rotatably supported on the inner surface of the front half 2 through a center hole 40 by a screw 41, and is located slightly below the channel display window 11 and slightly away from the right side of the cabinet 1. It is located in As shown in FIG. 5, which is a rear view of the dial drum 37, and FIG. 6, which is a sectional view taken along the line 5--5, the dial drum 37 has a substantially annular rim 42 projecting rearward from its periphery. A thread guide groove 13 is formed along the circumferential surface of the rim 42, and a substantially annular recess 45 formed between the rim 42 and the boss 44 in which the center hole 40 is formed has the thread guide groove 13 formed therein. A spring 46 is arranged to provide tension to the thread 39. 4
Reference numeral 7 denotes a spring locking pin integrally formed to protrude from the bottom surface of the recess 45, and the spring 4 is attached to the pin 47.
6 is locked at one end. A portion of the thread 39 is introduced into the recess 45 from the opening 48, which is a discontinuous portion of the rim 42, and the introduced portion is locked to the other end of the spring 46. The opening 48 is located at a position slightly offset from the opposite side of the spring locking pin 47 with the boss 44 interposed therebetween. Reference numeral 49 denotes a keyhole-shaped recess formed on the rear surface of the boss 44, into which a key-shaped transmission member 50 fixed to the shaft of the tuning variable resistor 38 is fitted.

A tuning variable resistor 38 rotated by a dial drum 37 is attached to the front side of the circuit board 51. The circuit board 51 is arranged at a distance from the front half 2 between approximately the upper half of the flat cathode ray tube 8 and the right side of the cabinet 1, and is placed on the left side so as not to overlap with the image reproduction section 24 of the flat cathode ray tube 8. Approximately the upper half of the halves is cut out to form an approximately L-shape. The tuning variable resistor 38 is arranged slightly below the notched portion of the circuit board 51, and
A variable resistor 52 for volume adjustment is provided approximately at the center of the right side of the notched portion. The rotary shaft of the variable resistor 52 is provided with the volume adjustment knob 14.
is screwed, and a portion of the knob 14 protrudes from the hole 15 to the outside of the cabinet 1. Note that 53 is a holding piece for holding battery contacts fixed to the lower edge of the board 51, and the holding piece 53 holds battery contacts 54, 54.
An antenna mounting part 55 is provided at the right end of 3.
The rod antenna 21 is attached to the antenna mounting portion 55.
The lower end of is screwed.

The tuning knob 16 that rotates the dial drum 37 is rotatably supported on the rear surface of the front half 2 using screws, with a part of it protruding from the hole 17 to the outside of the cabinet 1. It is located diagonally to the upper right. On one side of the tuning knob 16, for example, the front surface, a thread winding part 56 having a diameter suitably smaller than that diameter is integrally formed to protrude. 57, 58, 59 and 6
Reference numeral 0 designates a guide post for guiding the thread 39, and is formed protrudingly from the rear surface of the front half 2. The first guide post 57 is arranged at a position slightly spaced diagonally downward and to the right from the tuning knob 16, and the second guide post 58 is located further to the left of the left end of the channel display window 11 when viewed from the front of the cabinet 1. 1
It is provided at a slightly lower position than the guide post 57 of. The third guide post 59 is spaced downward from the first guide post 57 by approximately the diameter of the guide post and is provided slightly above the dial drum 37, and the fourth guide post 60 is located at a position slightly above the dial drum 37. It is located diagonally to the lower right of No. 37. Then, the thread 39 goes around the thread winding part 56 of the tuning knob 16 about once, and then passes through the first guide post 57.
It passes under the second guide post 58, is folded back, and passes above the third guide post 59. The spring 4 is then passed from the third guide post 59 through the opening 48 of the dial drum 37.
The tuning knob is hooked onto the terminal on the anti-spring locking pin 47 side of No. 6, further goes around the rim 42 of the dial drum 37 along the guide groove 43, passes under the fourth guide post 60, and is connected to the tuning knob. 1
The thread 39 reaches the thread winding portion 57 of No. 6, and an endless track is formed by the thread 39. The first guide post 5 of the thread 39
A pointer 30 is attached to a portion between the guide post 7 and the second guide post 58.

Reference numeral 61 denotes an L-shaped pointer support piece that supports the pointer 30. The pointer 30 is formed protruding from approximately the center of the horizontal side 62a, and the vertical side 62b extending upward from the rear end of the horizontal side 62a has an L-shaped pointer support piece 61. A thread hooking piece 63 is formed, and the pointer support piece 61 is connected to the thread 39 by the thread hooking piece 63.
is hooked to.

When the tuning knob 16 is rotated, the dial drum 37 is rotated, and the shaft of the tuning variable resistor 38 is rotated, and the pointer 30 is rotated.
is moved in the left-right direction, and the position of the pointer 30 in the left-right direction corresponds to the rotation angle of the shaft of the tuning variable resistor 38 (and thus corresponds to the tuning channel). This guideline 3
As described above, the movement area of 0 is located in the space 29 between the channel display window 11 of the front half 2 and the funnel 23 of the flat cathode ray tube 8.

64 is a circuit board placed behind the flat cathode ray tube 8, on which most of the circuits of the receiver are formed. The circuit board 64 has a board mounting piece 65 fixed to the rear surface of the substantially central portion of the cathode ray tube holder 28.
is screwed to. 66 is a screw for fixing the screw, and a capacitor configured using the glass of the screen panel 25 as the electric body is connected to the circuit board 6.
It also plays the role of electrically connecting to the circuit on 4. That is, by forming a conductive film on the outer surface of the screen panel 25, a large capacitor with the screen panel 25 itself as a dielectric is constructed between it and the metal film on the inner surface of the screen panel, and this can be used as a circuit element. There is a technology that can be utilized, and this technology is also used in this television receiver. Then, the capacitor is connected to the board 6 by the screw 66.
4 is connected to the circuit above. The circuit board 64 is attached to the cabinet 1 by the cathode ray tube holder 28 so that the surface on which the electronic components 67a, 67b, . . . are arranged faces forward. 68 is a tuner unit attached to the circuit board 64.

A battery holder 69 is removably disposed at the lower right portion of the cabinet 1, and the circuit board 51 is fixed above the battery holder 69. 70 is an insertion window for the battery holder 69 provided at the lower right portion of the rear half 3, and 71 is a battery lid that covers the battery insertion window 70 so as to be openable and closable. Reference numeral 72 denotes a stand for keeping the cabinet 1 in a slightly slanted position rather than in a lying position on a desk or other stand to make it easier to view the screen. , 73 engages with the engaging piece 7
4, 74 are formed protrudingly. This stand 72 has its engaging pieces 74, 74 attached to the rear half 3.
When inserted through the holes 73, 73, it is rotatably supported by the rear half 3 at the upper ends of both sides. Therefore, by rotating around the supported part and widening the gap between the stand 72 and the cabinet 1, the stand 72 can support the cabinet 1, thereby making it possible to make the cabinet 1 stand upright. . Stand 72 is in rear half 3 when not in use.
Attach it to the back of the Reference numeral 75 indicates an engagement protrusion formed on the lower front surface of the stand 72, and reference numeral 76 indicates an engagement hole provided in the rear half 3 corresponding to the engagement protrusion 75. When the stand 72 is brought into close contact with the outer surface of the rear half 3, The engagement protrusion 75 is engaged with the engagement hole 76 .

Reference numeral 77 denotes a speaker disposed at the lower left of the cabinet 1, and is attached to the rear surface of the front half 2 while being held by a speaker holder 78 and a speaker holding ring 79.

In the illustrated television receiver, the wasted space 29 that inevitably occurs between the front half 2 and the funnel 23 of the flat cathode ray tube 8 is used as a movement area for the pointer 30, so that the pointer 30 can move within the limited space within the cabinet. There is no need to allocate a special space for securing a movement area for the pointer 30. Therefore, it is possible to increase the packaging density of the television receiver and make it more compact.

In addition, since the movement area of the pointer 30 is formed below the screen rather than on the side of the screen, the screen can be made relatively large compared to the width of the cabinet, and the movement stroke of the pointer can be made relatively small. can be made larger to make it easier to synchronize.

Further, in the illustrated television receiver, the tuning knob 16 and the movement area of the pointer 30 are close to each other, so channel tuning is easy. That is, the first
In the television receiver shown in the figure, a tuning knob c is placed in the upper right corner of a cabinet b, and a tuning pointer e and a scale d are located gradually below the tuning knob c on the screen f. The distance between the tuning knob c and the scale d and pointer e is large. Therefore, it is difficult to perform the tuning operation of turning the tuning knob c, checking the tuned channel using the tuning scale d and the pointer e, and then fine-tuning the tuning while looking at the screen. In contrast, in the illustrated television receiver, the tuning knob 16 is located to the right of the movement area of the pointer 30, and the movement area of the tuning knob 16 and the pointer 30 are very close to each other. Therefore, the tuning operation of turning the tuning knob 16 and checking the tuned channel using the tuning scale 13 and the pointer 30 is easy to perform.

Effects of the Invention As described above, the television receiver of the invention has a structure in which the front surface of the image reproducing unit, which is integrally or integrally connected to the tube as a picture tube via a funnel, is approximately parallel to the axis of the tube. A television receiver using a flat cathode ray tube, in which substantially the entire receiver including the flat cathode ray tube is housed in a flat, substantially rectangular parallelepiped-shaped cabinet,
The movement area of the pointer that is moved in conjunction with the operation to change the tuning channel and indicates the tuning channel is divided into the front surface of the funnel and the front surface of the cabinet, which are inclined rearward from the front surface of the image reproducing section toward the tube side. It is characterized in that it is provided in a space formed between the two.

Therefore, according to the television receiver of the present invention, the movement area for the channel display pointer is provided in the wasted space that inevitably occurs between the front surface of the cabinet and the funnel of the flat cathode ray tube. There is no need to specifically allocate space for the movement area of the pointer, and the packaging density of the television receiver can be increased and the television receiver can be made smaller.
Furthermore, since the movement area of the pointer 30 is provided below the screen rather than to the side of the screen, the screen can be made relatively large relative to the width of the cabinet.
In other words, the width of the cabinet can be made narrower for a screen of the same size.

[Brief explanation of drawings]

Fig. 1 is a front view showing an example of a conventional television receiver, and Figs. 2 to 7 show an example of implementation of the television receiver of the present invention. Fig. 2 is a front view, and Fig. 3 is a front view. 1 is a longitudinal sectional side view showing the positional relationship of the cabinet, flat cathode ray tube, and pointer; FIG. 4 is an exploded perspective view of the television receiver; FIGS. 5 and 6.
The figures show the dial drum; FIG. 5 is a rear view, FIG. 6 is a sectional view taken along line 6--6 in FIG. 5, and FIG. 7 is a perspective view showing the tuning mechanism. Explanation of symbols: 1...cabinet, 8...flat cathode ray tube, 9...front of flat cathode ray tube (front panel), 22...tube, 23...funnel, 24...image reproducing section, 29...front of cabinet The space between Funnel, 30...Guidelines.

Claims (1)

[Scope of utility model registration request] A flat cathode ray tube is used as the picture tube, and the front surface of the image reproducing section is connected to the tube integrally or integrally through a funnel so that it is approximately parallel to the axis of the tube, and almost the entire picture receiver including the flat cathode ray tube is flattened. The television receiver is housed in a cabinet having a substantially rectangular parallelepiped shape, and is moved in conjunction with an operation to change the tuning channel, so that the moving area of the pointer indicating the tuning channel is moved from the front of the image reproducing unit to the tube side. 1. A television receiver, characterized in that the television receiver is installed in a space formed between a front surface of the funnel and the front surface of the cabinet, which slopes rearward as one goes to the front surface of the funnel.