MXPA97002596A - Television receiver with doors for your picture screen whose doors contain altavo - Google Patents

Abstract

The present invention relates to a television receiver to light weight computer monitor has doors that close on its image screen, to facilitate being transported by a child of nine or ten years of age. The image screen is substantially vertical during normal vision. These doors have speakers on their interior surfaces, said doors open from the sides of the cabinet to space the speakers more separately for better stereo sound reproduction. Console or drawer cabinet types for television receivers may also use revolving or swinging doors that open to the left and right on the image screen and include stereo speakers on the doors.

Description

TELEVISION RECEIVER WITH DOORS FOR YOUR IMAGE SCREEN WHOSE DOORS CONTAIN LOUDSPEAKERS The present invention relates to television receivers having image or display screens with doors and, more particularly, to those television receivers that have loudspeakers in their doors.

A portable television receiver suitable for the children's market is a concept of the inventors, said television receiver is small and light enough to be easily transported by a child of nine or ten years of age and is suitable for video game entertainment . With the greatest interest of eliminating the weight of the battery of such a television receiver, although it is portable, it usually works by connecting it to power sources of power. A laptop monitor particularly suitable for the children's market, whose computer monitor is small and light enough to be easily transported by a child of nine or ten years of age and is suitable for video game entertainment, is a related concept of the inventors. Such a television arrangement or computer monitor is called "transportable by children" in this specification. Such television arrangement or computer monitor "transport you by children" REF: 24369 is likely to be frequently transported by children prone to be careless when their thoughts are distracted by the expectation of video game entertainment. Therefore this is contemplated by the protective cover of the image or display screen that reduces the likelihood of damage to the kinescope or liquid crystal imaging device during such movement (and of possible consequential damages to the child). In addition, the doors that close on the image or display screen are hinged for the purpose of facilitating the manufacture of a portable television receiver that is of the "child-portable" type, allowing the child to transport the receiver using handles on the left and right sides of the cabinet or box carrying it with the two hands with the doors closed resting against the lower front torso. The portable television receiver designed particularly for the American children's market and for video game entertainment, includes a base stand for the cabinet, and a rotating mechanism for adjustable tilt, which not only facilitates the adjustment of the direction of vision direct to adapt to a viewer, but also alternatively facilitates the adjustment of the stereophonic music direction that is radiated from the speakers of the doors to suit a listener.

U.S. Patent No. 3,627,392 issued December 14, 1971 by Finley Ruppersburg is entitled STEREO SOUND REPRODUCTION SYSTEM.

Ruppersburg describes a portable stereo sound reproduction apparatus with a box that has revolving or swinging doors to the left and to the right that open from the front of the box to an extended position. The speakers mounted on the doors are arranged to direct the stereophonic sound when the doors are open to an extended position. The box includes a turntable or descending rotating phonograph record player with associated electronic players.

Portable television receivers and computer monitors have used steerable cabinets to facilitate adjustment of the direction of normal vision. U.S. Patent No. 5,243,434, issued September 7, 1993 by Takashi Nodama and entitled ROTATING DEVICE FOR A TELEVISION REPECTOR, is evidence of this. The application of the United Kingdom patent GB 2 252 003 A of Jeong-Seop Lee and oo-Jin Kim published on July 22, 1992 and entitled ROTATING PLATFORM FOR A TELEVISION RECEIVER, describes the use of a motorized rotating platform to adjust the normal viewing direction of a television receiver provided with speakers contained within the body of the cabinet enclosing the kinescope and positioned to the right and left of the kinescope image screen.

The drawer and large console television receivers of the past have used doors to hide their image or display screens when the receivers are turned off; the doors were used mainly for aesthetic reasons, in order not to have to see the dead eye of a kinescope without a grid. At one time, cylinder or front roller cabinets were common for European television receivers, cylinder doors or front roller occupied less space when they were opened. The doors have also been used for aesthetic reasons in stereophonic sound systems. In U.S. Patent No. 5,119,421 issued on June 2, 1992 and entitled CABINET WITH STEREO SYSTEM WITH DOOR MOUNTED LOUDSPEAKER, Reime describes a cabinet with stereo system with front opening loudspeaker panels, which rotate around vertical axes , which are closed as doors when the cabinet with stereo system is not in use. The loudspeakers are mounted on the lower parts of the doors, which have their upper parts closing on a shelf that can hold a color television receiver "model for table"; so that the problem that the permanent magnets in the loudspeaker motors affect the color purity of the color television receiver is not addressed. The use of doors in such large sound and television equipment is difficult. In this way, in most houses the doors tend to be open to the left unless the preacher or other important guest calls. The tendency to close doors and the cost of doors only sometimes, especially when the veneer is finished in fine wood, has reduced the market for television receivers with doors to hide their image or display screens. The manufacture of revolving cabinet doors with sufficient height to cover separately the image or display screen of the television and loudspeakers, as Reime does, tends to make the doors heavier and more prone to deformation.

In addition, the problem with the stereophonic sound reproduction apparatus provided with stereophonic speakers in the revolving doors on the right and on the left, as has been described up to now, is that the movement of the body of the cabinet, in order to direct the sound Stereophonic in a desired direction by the listener, may cause scratching of the surface on which the body of the cabinet is placed. In the case of a console or drawer cabinet, which tends to be quite heavy, the movement of the cabinet body can scratch the hardwood, linoleum or tile-linoleum floor, which supports the body of the cabinet. In the case of the portable stereo sound reproduction apparatus, its movement made for the purpose of directing the stereophonic sound in a desired direction by the listener, may scratch the top of the table or desk that supports the body of the cabinet. While the portable stereo sound reproduction apparatus is less in weight than the stereo sound reproduction apparatus in a console or drawer cabinet, the table or desk supporting the cabinet body may have a fine furniture finish that is more prone to to be scratched, that a hardwood floor.

In the portable television receivers or computer monitors of the present invention, the doors are not used primarily for aesthetic purposes. In addition, the doors are designed in such a way that they can be transported by a child and are mainly used to protect the image or display screens during transport in order to reduce the likelihood of damage to the kinescope or to the image devices of the vehicle. liquid crystal (and therefore of possible harm to the child). The smaller size of these doors prevents them from being bulky, even when they are hinged doors with front opening, instead of swinging doors forward. When the revolving doors on the right and on the left, which can be closed on the image or display screen and include stereo speakers on the doors, are opened to an extended position, the stereophonic speakers are on the side of the image screen or display instead of being located below the television receiver image or display screen.

Stereophonic sound is provided by some television transmissions and some video entertainment, and there is a problem with proper separation of the portable television receiver's speakers to achieve directional sound reproduction. Satellite speakers connected by cable to the portable television receiver can be used to overcome this problem. However, satellite speakers interfere with the ease of transportation available, and are likely to be thrown by a child during transport, and contribute to the mess of the house caused by the child's entertainment. The mounting of the stereophonic speakers on the doors that open to the left and right of the image or display screen, provides sufficient adequate separation to achieve directional sound reproduction for a child sitting very close to the portable television receiver, The closeness of the seat is normal with the small screen sizes associated with a receiver small enough to be carried by a child. The hinged doors include a left door hinged from the cabinet to cover the left side of the image or display screen when closed and to extend from the left side of the cabinet when it is open, and includes a door Right hinges from the cabinet to cover the right side of the image or display screen when closed and to extend from the right side of the cabinet when it is opened, not only protects the kinescope or liquid crystal imaging device during transport. During transport, said doors also protect the loudspeakers mounted on the sides of the same when they are closed on the image or viewing screen.

In U.S. Patent No. 2,547,447 issued April 3, 1951 and entitled "STEREOPHONIC SOUND PLAYING EQUIPMENT", de Boer describes the assembly of stereophonic loudspeakers in sliding doors, to the left and right of a radio receiver stereophonic. In the Boer apparatus, the loudspeakers are mounted to have their openings on the outside of the doors that slide to the left and to the right while closing on the radio receiver, which tends to leave the speakers inadequately protected during transport. For example, when transport is from one building to another during a rain, it is likely that water will enter the speaker opening.

The mounting of the speakers inside the hinge door or revolving door that closes on the image or display screen can provide protection when this rain event occurs, since the cabinet and doors of a television receiver or monitor of transportable computer by children generally it will be made of a waterproof industrial plastic material.

The assembly of the loudspeakers in the doors covering the image screen or of the visualization of a television receiver during the transport, involves considerations not taken into account by Boer or Reime, in relation to the interaction of the form of emanation of the magnetic fields of the magnetized metal components of the loudspeakers, close to the image or display screen, when the doors are closed on the image or display screen, as indicated in this invention. The permanent magnets in the drive motors of the loudspeakers distort the magnetic conditions close to the front plate of a colored kinescope, for example. The magnetization of metallic components near the image or display screen creates local magnetic fields that affect the discharge of electronic beams in a phosphor pattern of the image screen, creating problems of chromatic purity.

As it is well known by designers of color television receivers, the shadow mask or perforated grid inside a kinescope, is commonly made of ferrous metal and is subject to magnetization when exposed to magnetic fields, even those as weak as the earth's magnetic field. Any change in such magnetization, such as occurs during the change of position of the television receivers within the magnetic field of the earth, affects the deflection of the 3 electron beams that respectively sweep the red emission phosphors, the green emission phosphors and blue broadcast matches on the image or display screen, causing a loss of proper color registration that is totally annoying to viewers. To counteract such loss of color registration and maintain chromatic purity, the color kinescope is commonly provided with demagnetizing coils installed in it, which when the television receiver has its basic power turned on after being turned off for some time, are briefly energized by demagnetization or deimanation of the shadow mask or perforated grid. The ignition of the receiver before the doors are opened on the image screen and fixed or left in an open position, interferes with the automatic deimanation coil eliminating anomalies of magnetic fields by the demagnetizing coil, close to the screen. image induced by the emanation of the magnetic fields from the loudspeakers, however, as indicated in this invention. Accordingly, whether a perforated grid color kinescope, a shadow mask color kinescope, or a similar type of color kinescope is used as the image or display device in a television receiver or computer monitor transportable by children, equipped with speakers on hinged doors to close on the image or display screen, the automatic deimanation must be deferred until after the doors are opened and fixed or left in an open position, as indicated in this invention . This can be achieved, also deferring the application of power to the television receiver or computer monitor until the doors are opened and fixed or left in an open position, as indicated in this invention.

The problems of chromatic purity caused by including the speakers in the hinged doors that close on the image screen can be mitigated or avoided in other ways, as indicated in this invention. The use of non-magnetic materials in the perforated grid or shadow mask, the chassis and the kinescope installed reduces the problems of chromatic purity, assuming that it is used as the imaging or visualization device, a perforated grid color kinescope, a shadow mask color kinescope or a similar type of color kinescope. The use of industrial plastics in a television receiver or computer monitor transportable by children is an attractive way to reduce weight and to provide resistance to damage resulting from accidental falls or violent blows against other objects. The loudspeaker motors can be constructed to avoid the use of permanently magnetized structures, being constructed using only electromagnetic structures. Indeed, the motors of the loudspeakers in the doors can be of an electrostatic type rather than an electromagnetic type, it is best to avoid the magnetic structures. Since small electrostatic speakers with good low frequency response are a problem, the loudspeakers in the doors can be aided by a lower frequency electromagnetic response speaker located in the main body of the cabinet or in a base for it . Problems of chromatic purity can be avoided by replacing the standard color kinescope with another color imaging device, such as a liquid crystal color imaging device, or such as a single-barrel kinescope using controlled phosphorus penetration, the which can be of the "onion-skin" type to give an example. However, a conventional color kinescope is more favored due to its lower cost. The stereophonic speakers in the doors of the image or display screen, a concept used in portable television receivers particularly suitable for the children's market, seem to be so attractive that the concept is being extended through a complete line of television receivers. of color by the American market, including non-portable tabletop receivers and floor console receivers. The concept will also be used in computer monitors. American television receivers are peculiar in their style compared to television receivers from the rest of the world. Instead of using recessed mounting of the kinescope screens on your body shop, which is common in the rest of the world, especially in Europe, American television receivers and computer monitors usually have their kinescope screens mounted behind a lid. or setting that forms a "picture frame" for the viewer, which is preferred by American customers.

The portable television receiver designed particularly for the American children's market and for video game entertainment uses a kinescope with a flat face and a deep setting around it, to reduce the incidence of light fall on the screen during the day of entertainment, and to give the child the feeling that he is in his own world with the assurance that he will not be interrupted by adults. A possible mitigation of the problem that the kinescope's perforated grid or shadow mask is magnetized by the permanent magnets in the door-mounted loudspeaker motors, was another factor in evaluating a deep-set design in the pre-market studies of a possible design of the cabinet. A kinescope operated from portable television electronics already in production and using conventional desimanation procedures when the television receiver has its basic power or power turned on after it was turned off for some time, was used in the pilot or experimental design of deep crimping of the television receiver.

Surprisingly, when the pilot or experimental design of deep crimping of the television receiver was operated, there was no evidence of the expected problem of the shadow mask or perforated grid of the kinescope being magnetized by the permanent magnets found in the mounted speaker motors. at the doors, the solutions to this problem are indicated above. In retrospect, this seems to be because the magnetic flux dispersion of the modern loudspeaker motors is kept quite small by the high permeability of the materials used in the permanent magnets to keep the motor weight low, and by the magnetic structures employed. The lines of the speakers, when they are turned towards the screen, are reviewed when the doors are opened, in such a way that the resulting change in the magnetic field tends to be zero. Simply using a door and crimping design, in which the permanent magnets found in the door-mounted loudspeaker motors are kept a few centimeters from the face of the kinescope screen, avoiding the problem of the mask shadow or perforated kinescope grid that is being sufficiently magnetized to noticeably affect the chromatic purity.

In addition, the pilot or experimental design of deep crimping of the television receiver that used a monophonic speaker of low frequency range, or "woofer" (low frequency coil speaker), which was mounted in the cabinet of the television receiver in some distant place from the kinescope screen. Humans detect stereophonic separation effects mainly at intermediate frequencies, particularly when the separation distances of the loudspeaker are less than four or five feet. In this way, the effects of stereophonic separation at low frequencies are not pronounced, the use of a monophonic low frequency coil speaker when the separation distances of the loudspeaker are forced to less than four or five feet, is common in audio systems. less expensive stereophonic reproduction, particularly in those console type. In order to maintain acoustic coupling at low frequencies in the room in which the listener is located, the low frequency coil speakers generally have larger (conical) surfaces to be driven by their motors, than those that the speakers have. its high frequencies. In order that the low frequency coil speakers can handle these larger surfaces, the permanent magnets in the low frequency coil loudspeaker motors are commonly larger and of greater magnetic field strength than the permanent magnets that are They are found in the motors of the intermediate frequency range speakers, or in the motors of certain types of high frequency range speakers, or "t eeters" (superfrequency speakers). There are no low frequency coil speakers in the doors of the pilot or experimental design of deep crimping of the television receivers that helps to avoid the problem of the shadow mask or perforated grid of the kinescope that has been sufficiently magnetized to noticeably affect the chromatic purity. This allows the deep crimping, in a deep crimping design of the television receiver, to be done shallower, without incurring losses of chromatic purity due to the magnetization of the kinescope by the loudspeaker motors.

Other factors are considered in the design of the television receiver or computer monitor trans-prtáae p rúfcß. To keep the weight of the cabinet low for easy transportation by a child, a design without 50/60 Hz power transformer is used. The cabinet without taking into account its hinge doors on the image screen completely surrounds that part of the cabinet. device used to generate the images on the image screen, and does not leave gaps that could allow the insertion of objects inside the chassis that could pose a risk of shock or electric shock. The cabinet is preferably designed to allow two-handed carrying by a child, with the doors of the image screen against the child's stomach. This reduces the risk of damage during lifting and reduces the likelihood of the device falling or violent knocks from your cabinet against other people or objects. The handles or carrying handles, without them are provided, are preferably on the sides of the cabinet or under the cabinet to make the child desist, the intention of carrying it with one hand. The cabinet being closed, is designed with rounded corners of long radius so that when it is transported by a child it reduces the likelihood that the child will be damaged by it, harm another child, damage the walls of the doors or walls of the child. the house, the furniture in a house, or a vehicle.

Flexible or soft or cushioned surfaces are preferable in the cabinet, if cost considerations can allow it. The hinges on the cabinet doors and any other locking mechanism on the doors are designed to avoid the possibility of biting the fingers or other part of the body. The hinges on the cabinet doors are of firm construction in such a way that the cabinet doors can not be separated or broken from the cabinet. If the hinges use articulation shafts or hinge pins (being of the piano type, for example), the ends of each hinge pin or hinge pin are provided with guards or latches to anticipate that the hinge pin is removed by a child. The conduction of signals of transmission or electrical conduction to the loudspeakers in the doors, must be done of such way that the conductors are not easily susceptible to be manipulated dangerously by a boy. The power cord is preferably retractable or retractable within the cabinet during transportation of the television receiver or computer monitor transportable by children. It can be included in the television receiver or computer monitor transportable child, an apparatus to display or send a pre-recorded warning message "pull the plug" and that is operated or put to work by the child when lifting the receiver or monitor a resting position. The apparatus for sending or displaying the warning message may be similar to that used in some toys (such as talking dolls, for example).

BRIEF DESCRIPTION OF THE INVENTION The invention in one of its aspects is characterizing a television receiver or transportable child computer monitor that has doors that cover its image or display screen during transportation.

The stereo loudspeakers mounted on the doors that open to the left and right of the picture screen provide sufficient separation to achieve directional sound reproduction for a child sitting near the portable television receiver. If the image is provided by a kinescope, it is of a low emission type that is safe for such closeness of the seat.

In a television monitor or computer monitor that uses a color kinescope, it has doors that cover its image screen during transport, and it has stereophonic speakers mounted on the doors opening to the right and left of the image screen, in In a further embodiment of the invention, the automatic deimanation is deferred until after the doors covering the image screen are opened and fixed or left in an extended open position. This facilitates the correction of the remaining magnetic field anomalies close to the image screen previously induced by the magnetic fields emanating from the loudspeakers.

A television receiver or computer monitor constructed in accordance with another aspect of the invention, which uses a liquid crystal color image device instead of a color kinescope, has doors that cover its image or display screen during the transport, and has stereo speakers mounted on the doors opening to the right and left of the image screen. The liquid crystal color imaging device is not affected by any magnetic field emanating from the speakers when the doors are closed on the image or display screen.

A television receiver or computer monitor constructed in accordance with another aspect of the invention, has a color kinescope subject to losses of chromatic purity due to changes in the magnetic field, has a crimping frame surrounding the face of the image screen of the kinescope, it has doors on the right and on the left which close on its image screen and the frame around this screen, and right and left speakers on the interior surfaces of their right and left doors, these speakers have motors with permanent magnets on them. The doors open outwards from the sides of the cabinet to space the speakers more separately for the best reproduction of the stereophonic sound. The speakers have motors that include components of the respective permanent magnets. The mounting of the loudspeakers on the doors, and the crimping frame housing the face of the image screen from the opposite side of the cabinet, are sized to hold the components of the permanent magnets of the loudspeaker motors a few centimeters beyond the face of the image screen, in such a way that there are no appreciable losses of chromatic purity due to changes in the magnetic field when the doors are opened, as a result of the proximity of the components of the permanent magnets of the motors from the speakers to the face of the kinescope image screen when the doors have been closed.

A portable television receiver or computer monitor constructed in accordance with another embodiment of the invention, has doors that cover its image screen during transport, and has stereo speakers mounted on the doors opening to the right and left of the screen. image, said stereophonic speakers are constructed in such a way that they do not have permanently magnetized elements inside them.

In addition, the problem of scratching the surface on which the body of the cabinet rests is solved in the invention, supporting the body of the cabinet on a base or platform that does not need to be moved to direct the stereophonic sound in a different direction. Instead, the body of the cabinet is supported on the base or platform in such a way that it can be easily orientable with respect to the base or platform when it is desired to direct the stereophonic sound in a different direction.

BRIEF DESCRIPTION OF THE DRAWINGS.

Figure 1 is a front perspective view of the child-portable television receiver characterized in the invention, having doors covering the image or display screen of its color kinescope during transport, and having stereo loudspeakers mounted on the doors , which open to the left and to the right of the image screen.

Figure 2 is a rear perspective view of the television receiver transportable by children of the Figure 1.

Figure 3 is a schematic block diagram of the circuitry in Figure 1 of the child-portable television receiver, with doors covering its kinescope image screen, including according to one embodiment of the invention, - immobilization switches or lock of the right and left door to control the application of energy to the coils of automatic desimanación (ADG) (of its abbreviations in English Automatic Degaussing Coils).

Figure 4 is a perspective view of the inside of a part of the crimping frame of Figure 1 of the television receiver transportable by children with loudspeakers on its doors, showing in detail one of the hinges of the door, a shape for feed the connection cables for the speakers from the receiver cabinet inside their doors, and a way to implement a door lock or immobilization switch.

Figures 5 and 6 are perspective views of different types of doors that can be * used in modifications of Figure 1 of the transportable television receiver by children.

Figure 7 is a sectional view of a latching mechanism for the doors of Figure 1 of the child-portable television receiver.

Figure 8 is a front perspective view of a child-portable television receiver characterized in the invention, having doors that cover the image screen of its liquid crystal color imaging device during transport, and has stereo speakers mounted in the doors, which open to the right and to the left of the image or display screen.

Figure 9 is a front elevation view of the television receiver according to another embodiment showing the right and left doors with loudspeakers mounted therein in an open position.

Figure 10 is a front elevational view of the embodiment of Figure 9 with the right and left doors closed.

Figure 11 is a side elevational view of the embodiment of Figure 9.

Figure 12 is a cross-sectional view taken along line 12-12 in Figure 9.

Figure 13 is a bottom-up view of the embodiment of Figure 9.

Figure 14 is a schematic illustration of another embodiment of the present invention.

DETAILED DESCRIPTION OF THE INVENTION.

The television receiver trayspartabLe per children of the Figure 1 has a cabinet 10, which due to the probability of difficult handling and the desire to have a low weight, it is preferably made of an industrial plastic material. The industrial plastic material must be waterproof. The cabinet 10 is shown as being on a rotating and adjustable tilt platform 11. The opposite side of the cabinet 10 has an image screen 12 of an imaging device such as a low emission 33 cm diagonal kinescope disposed therein. . A left door 13 shows in its fully open position the superfrequency, low frequency and intermediate frequency loudspeakers 14, 15 and 16 mounted therein, in such a way that they radiate the sound from the exposed internal surface of the door. A right-hand door 17 shows in its fully open position the superfrequency, low frequency and intermediate frequency loudspeakers 18, 19 and 20 mounted therein in such a way that they radiate the sound from the exposed internal surface of the door.

Figure 1 shows the drawing of the left door 13 to be hinged to the cabinet 10 by extendable loops within the holes of the cabinet 10 and shows the left door 17 to be similarly hinged to the cabinet 10, and shows an arrangement of hinges called "pin opposite and eye "(" opposed pin and eye "). However, other arrangements of hinges are possible, such as the reinforced piano-like hinge arrangement. If a flexible industrial plastic material can be found with sufficient strength after repeated flexions, the hinge can be formed by bending the plastic itself. The ends of the rings on the doors 13 and 17 which serve as hinge pins or articulation shafts in the arrangement of opposite pin and eye hinges, have holes at the ends, which are not seen in Figure 1. The cables electrical devices for conducting the sound descriptive signals from the left sound amplifier (s) on the television receiver, to the speakers 14, 15 and 16 on the left door 13, are threaded through one or more of the holes in the ends of the rings in the left door 13; and the electric cables for conducting the sound descriptive signals from the right sound amplifier (s) on the television receiver, to the speakers 18, 19 and 20 on the right door 17, are threaded through from one or more of the holes in the ends of the rings in the right door 17. Alternatively the electrical wiring must pass through armed cables connected between the cabinet 10 and their respective doors 13 and 17, with gaps formed in the doors 13 and 17 for supporting the armed cables when those doors are closed on the image screen 12. The image screen 12 is surrounded by a crimp frame 21 of substantial depth to receive the heads of the low frequency loudspeakers 15 and 19. The crimp frame 21 forms the opposite part of the cabinet 10, and the doors 13 and 17 are hinged therefrom. The crimp frame 21 and doors 13 and 17 are provided with rounded corners to reduce the risk of damage to a child who is transporting the arrangement or falls on top of the arrangement. The substantial depth of the crimp frame 21 provides better protection of the image screen 12 from accidentally being struck therein, and reinforces the crimp frame 21 as a structural member. Figure 1 shows recessed rocker buttons for the main television controls, being located within the openings of the crimp frame 21, including a rocker button 22 for turning the television receiver on and off, a rocker button 23 for controlling the volume of sound (raise and lower it), a rocker button 24 to control the channel selection up and down, and rocker button 25 to select the radio frequency signal source supplied to the television receiver (and in some designs to control the power supply). energy for the television games used with the television receiver). Alternatively, these oscillating button controls 22, 23, 24 and 25 can be located in a box on the front of the crimping frame 21. A quick-opening board 26 on the opposite side of the crimping frame 21 further conceals, rarely used controls such as the acute and bass controls for sound. The infrared sensor 27 for receiving remote control signals, from an infrared remote control 28, is also located in the front part of the crimping frame 21. The infrared remote control 28 has buttons to control all the functions of the television.

As shown in Figure 1, a spring or ratchet detent 82 can be installed on the upper center front of the crimp frame 21, engaging or engaging the upper edges of the grooves 83 and 87 in the upper portions of the interior surfaces of the groove. the closed doors 13 and 17, to keep doors 13 and 17 positively closed for transport. A push button 84 on the upper central surface of the crimp frame 21 is pressed to release the doors 13 and 17. The upper portions of the interior surfaces of the closed doors 13 and 17 are provided with the compression springs 85 and 86 for damping the open doors 13 and 17 when the push button 84 is pressed to release the spring latch or ratchet 82. These compression springs 85 and 86 can be made from elastic plastic material and this allows them to adapt or fit themselves in the interior plastic boards of the doors 13 and 17. Alternatively, the compression springs 85 and 86 can be relocated to the upper front surface of the crimp frame 21. Other arrangements of safety latches or retainers can be used to secure the doors 13 and 17, but they should avoid outgoing structures that could harm a child, they should avoid the possibility that an You can not pick on them, and they should be reasonably simple so that a child can handle them.

Figure 2 shows the back of the television receiver traTfrtahí per girls of Figure 1.

A backplate 29 of industrial plastic in one piece, which forms the rear part of the cabinet 10, is attached to the crimp frame 21 and secured thereto by the screws 30. The industrial plastic from which the crimp frame 21 is formed and the rear shell 29 is an electrical insulator, which allows the use of non-transformable power supplies in the television receiver without significant risks of electric shock. The screws have slots of the hourglass type or other specially shaped grooves (for example, those used to secure the headlights of automobiles) to prevent a child from trying to separate the rear shell 29 from the crimp frame 21, and an obturating liquid Exclusive is used in the junction between the rear shell 29 and the crimp frame 21. The corners of the rear shell 29 are rounded to reduce the risk of damage to a child carrying the arrangement or from falls against the arrangement. Preferably, the rear shell 29 is free of accessible holes to reduce the likelihood that the child will attempt to introduce objects into the receiver's electronics and reduce the likelihood that liquids will be spilled into the television receiver. Also transporting the receiver outdoors during rain or snow is less likely to cause problems. The rear shell 29 may have holes for inserting tools to disguise support arrangements, etc., on its bottom surface, so that it is accessible only when the television receiver is removed from its rotating platform and adjustable tilt 11. Due to that the ventilation holes allow to escape the heat generated inside the television receiver it is necessary that they are near the upper part of the cabinet 10, so it is preferable to locate them in the front part of the setting frame 21, where they can be covered through the doors 13 and 17 when the receiver is transported, in such a way that it is feasible to transport the receiver outdoors during rain or snow.

Unlike other portable television receivers, the receiver of Figure 1 is not provided with a handle or handle located at the top. This is done to encourage a child who is transporting the receiver to do it with both hands, with the receiver's doors closed against his stomach, since this transport position is believed to pose less risk of harm than if the child will try to carry the receiver with a handle or handle located at the top. The adjustable tilt and swivel platform 11 is constructed in such a way that it does not interfere with said two-handed transport, the center of weight for the arrangement is located slightly in the front of the receiver and the bottom of the rear shell 29 may have shallow grooves along its left and right sides to favor fingering. An energy cord 31 is shown directing to the spring cord bobbin fitted within the adjustable tilt and swivel platform 11, which impose restriction on the amount of rotation. Alternatively, the spring cord bobbin can be located at the bottom of the rear shell 29, but this reduces the space for the electronics in the rear shell 29 and tends to make the spring cord bobbin less accessible for service . In addition, the spring cord bobbin has to be compartmentalized with the electronics of the receiver, which complicates the manufacture of the rear shell 29 a single or molded single unit. The loss of space for the electronics in the rear shell 29, when the spring cord bobbin is included within it, is of great importance in a computer. In designs where power controls for electronic games are located on the front of the receiver or computer, the power or power connections 32 are provided, and 33 are provided in a part of the rear panel, of the rear shell 29. This part of the rear board of the rear shell 29 also has the connections 34 for "antenna", provided in it to receive radio frequency signals from video games and from a cable connection, outdoor antenna, or video recorder. The receiver of Figure 1 does not have an antenna formed by two V-shaped metal rods, or another type of array of indoor antennas normally found in a portable television receiver, because they can harm a child falling on them. when the receiver is placed on the floor. Some designs include an indoor antenna, which can be used to receive local UHF broadcasting or retransmission of VHF television signals at 920 MHz from a base transmission television receiver. There are video / sound input connections 35, and video / sound output connections 36, located on the rear part of the rear shell 29, for connection to a VCR. There are also right / left stereophonic sound input connections 37 and right / left 38 stereo sound output connections, located at the rear of the rear shell 29.

Figure 3 is a schematic block diagram of the circuitry of the television receiver of Figure 1, which has doors covering the image screen of its color kinescope 40. When connected to the main power source, the male plug 41 supplies 50/60 Hz alternating current to conventional voltages from the main source through the power supply cord 31 to a low voltage source without transformer 42, which rectifies and filters the voltage of the supply line to develop a voltage direct service for application to the circuitry of the remote control receiver 43. The circuitry of the remote control receiver 43 responds to a carrier wave of modulated infrared light detected by a sensor 44, to generate control signals applied to various circuits in the receiver of television as will be explained below. The 50/60 Hz alternating current supplied through the power supply cord 31 is also supplied to a bi-directional bipolar power on / off switch 45, actuated by the oscillating button 22, which is on the front of the television receiver of Figure 1. Assuming that the on / off power switch 45 is in its ignition condition, according to one aspect of the invention, the 50/60 Hz alternating current is subsequently selectively applied to a connection in series of automatic desimanation coils 46 and a resistor 47 that is temperature dependent and is of the posistor type, when and only when both, the left door lock switch, 48, and the right door lock switch, 49, are simultaneously very open. Accordingly, the automatic deimanation takes place only after the loudspeakers 14-16 and 18-20 are balanced or rotated from the image screen of the color kinescope 40.

The problems of deimanación of the kinescopio can be attenuated, using motors of the electromagnetic speakers that do not use permanent magnets in their construction. The constant magnetic field for the conical coils to work can be provided by electromagnets, the magnetic structures of these are of low remaining magnetization material and the coils of these are supplied with direct current from the low voltage power circuitry, 59. The constant magnetic field is not established until after the open doors 13 and 17 make the locking switches 48 and 49 conductive.

In response to the control signal supplied from the circuitry of the remote control receiver 43, through a connection 50, and responding to the condition of the oscillating button 25 which is located in the front of the receiver of Figure 1, a electrically controlled on / off switch 52 selectively applies the 50/60 Hz alternating current that is available by the conduction switches 45, 48 and 49 of the electrical outlet 32. In response to a control signal supplied from the circuitry of the remote control receiver 43, through a connection 51, and in response to the condition of the oscillating button 25, an electrically controlled on / off switch 53 selectively applies the 50/60 Hz alternating current that is available by the switches of conductors 45, 48 and 49 of the electrical outlet 33.

The remaining part of the circuitry of Figure 3 is similar to that found in previous television receivers. The 50/60 Hz alternating current that is available through the conduction switches 45, 48 and 49, is supplied to a transformerless low voltage source, 54, which rectifies and filters the voltage of the supply line to develop a voltage direct service supplied to a horizontal deviation oscillator, 55, and a horizontal deviation amplifier, 56, driven therefrom. The horizontal deflection amplifier, 56, includes a horizontal output transformer with a secondary coil or winding to apply the sawtooth waveform signal with sweep to the horizontal swept coils in a deflecting collar or magnetic deflector yoke 57, associated with the kinescope of color 40. Sawtooth voltages are supplied in the form of a winding or tertiary coil of the horizontal coil transformer (such as self-raising the secondary coil of the horizontal coil transformer) to a high-voltage power supply 58, said high-voltage power supply 58, supplies accelerating or final-electrode voltage to the color kinescope 40, and conventionally includes in the a voltage triplicator. The horizontal output transformer includes at least one additional winding or coil to supply voltage to be rectified or filtered in the circuitry of the low voltage power supply 59, for the rest of the television receiver. In this way, the horizontal output transformer transforms the power or energy at frequencies above 15 kHz, instead of at the 50/60 Hz frequency of the main power source, so less "iron" is required in the transformer to supplying the alternating current input to the circuitry of the low voltage power supply 59. This, and the reduction in the size of the capacitors required to filter the periodic fluctuation of the alternating current of the direct service voltages, supplied by the circuitry of the power supply 59, due to the higher frequency of periodic fluctuation of the current, reduces the weight of the circuitry of the low voltage power supply. This reduction in weight is of great importance in a portable television receiver which is of the transportable child type. The electrical insulation provided for the circuitry of the low voltage power supply 59, by using at least one winding or additional coil in the horizontal output transformer to supply voltage to be rectified and filtered, prevents voltages from the electrical power line are applied to the controls of the television receiver, as in the case of all power sources without transformer power of the so-called "hot chassis" type ("hot-chassis"). This reduces shock hazards for a child who pries the knob or button of an electrical control device out of the television receiver with a screwdriver or similar tool.

The radio frequency television signals received at the "antenna" connections 34, are supplied to a tuner 60, the tuning of which is controlled by, either by the oscillating button 24 which is on the front of the receiver of Figure 1, or by the signal supplied from the circuitry of the remote control receiver 43, through a connection 61. The tuner 60 is preferably a full band tuner, capable of receiving cable channels, as well as the broadcast television channels, and preferably is equipped to receive television signals retransmitted in a 920 MHz signal carrier to a small antenna 601 within the receiver cabinet 10. The tuner 60 converts the radio frequency television signal, selecting a 45 MHz video intermediate frequency signal supplied to an intermediate video frequency amplifier, 62. The frequency signal i intermediate amplified video is supplied to the circuitry of the video detector 63, to be demodulated to recover a composite video signal supplied to a composite video amplifier, 64, and an intermediate frequency sound signal of 4.5 MHz frequency modulated, supplied to an intermediate frequency 65 sound amplifier. The intermediate frequency amplified sound signal is supplied to an FM 66 sound detector, which recovers either a base or basic band sound signal or a composite stereo signal supplied to a stereo detector 67. The stereo detector 67, supplies a left sound signal to the circuitry of the left sound amplifier 68, which supplies the signals by conduction to the loudspeakers 14-16 in the left door 13 of the television receiver of Figure 1. The stereo detector 67 also supplies a right sound signal to the circuitry of the Right sound amplifier, 69, which supplies the signals by conduction to the speakers 18-20 in the right door 17 of the television receiver of Figure 1. The circuitry of the left sound amplifier 68, and the sound amplifier circuitry Right, 69, receive respective volume control signals from the circuitry of the remote control receiver 43, through the connections 70 and 71, respectively.

A synchronization pulse separator 72 separates the synchronization pulses from the amplified composite video signal, supplied to it from the composite video amplifier 64. These synchronization pulses are supplied to a horizontal AFC circuit 73, which generates a signal of automatic frequency control (AFC) (from its acronym in English Automatic Frequency Control) from him. This AFC signal is applied to the horizontal deviation oscillator 55, to regulate the fundamental frequency of its oscillations to adjust with the horizontal line scan frequency. The synchronization pulses supplied from the synchronization pulse separator 72 are applied to a vertical integrator 74, to generate injection synchronization signals by a vertical deflection oscillator 75, by forcing the frequency of its sawtooth oscillations to adjust with the frequency of vertical field scanning. These vertical sawtooth oscillations are amplified by a vertical deflection amplifier 76, which then apply the vertically swept sawtooth waveform signal to the vertical sweep coils in the deflection collar or yoke magnetic deflector 57, associated with the color kinescope 40. A dynamic convergence system 77 receives, as input signals, the sawtooth waveform signal with vertical sweep of the vertical deflection amplifier 76, and the shape signal Sawtooth waveform with horizontal sweep, from the horizontal deflection amplifier 56.

The composite video signal amplified from the composite video amplifier 64 is supplied to the luminance / chrominance separation circuitry 78.

The color synchronization circuitry 79 receives the separated chrominance signal from the separation circuitry 78 and, responds to horizontal synchronization pulses in the output signal from the sync pulse separator 72, selects the synchronization signal portions of color of the chrominance signal separated by synchronization of the oscillations of a local color oscillator (3.58 MHz). These oscillations are supplied from the synchronization circuitry 79 to the chrominance detection circuitry 80, and are used there to synchronously detect the separate chrominance signal supplied from the separation circuitry 78 to the chrominance detection circuitry 80. Synchronous detection of the separated chrominance signal as a result of the different color signals, which are supplied together with the separate luminance signal from the luminance / chrominance separation circuitry 78, to the video and color matrix amplifier circuitry, 81. This circuit 81 combines the signals of different color with the separated luminance signal to generate red, green and blue signals, which are amplified and used to control the emission of electrons from the projections or throws of electrons red, green and blue in the color kinescope 40. In extended absence In addition to the color synchronization signal, such as when receiving black and white transmissions or very weak signal color transmissions, the synchronous detection of the chrominance signal separated in the chrominance detection circuitry 80 is discontinued or suspended; and the circuitry of the video amplifier and color matrix, 81, controls the emission of electrons from the projections or throws of red, green and blue electrons in the color kinescope 40, in order to generate monochromatic response on the image screen or of visualization.

Fig. 4 shows in detail the upper door hinge of the left door 13 of the child-portable television receiver of Figure 1 with speakers in the doors. The front left part of the crimp frame 21 to the left of Fig. 4 is separated. The door 13 has an inner side 131 and an outer side 132, formed as separate molded parts and joined together, possibly with an adhesive cement, and held together by a set of wood screws that do not need to open their hole 130 (from which one is shown) that have hourglass slots or other slots of special shapes. The sides 131 and 132 have respective portions 133 and 134 which together joined together form a pin for a pin and eye hinge, the eye or eye 210, which is formed or molded within the crimp 21 frame or glued to it just above. of an opening in the crimp frame 21 to accept the hinged part of the door 13, whose perforated sides are identified by the number 211 of Figure 4. The portions 133 and 134 of the hinge pin of the sides 131 and 132 of the the door 13 is formed and arranged with respect to each other to provide a hole through the hinge pin or hinge pin so that the connection cables of the speakers 680-683 which connect from the circuitry of the left sound amplifier 68, to the loudspeakers 14-16, they can be threaded into the left door 13. The hinge pin, formed from the portions of the hinge pin 133 and 134 of the sides 131 and 132 is basically circular. cylindrical, but has a flat part 135 at its final end. A cylindrical metal shirt or part 136 fits tightly over the portions of the hinge pin 133 and 134 of the sides 131 and 132 to reinforce the hinge pin, in view of being hollow, such a cylindrical metallic shirt or part 136 helps to keep the sides 131 and 132 of the door 13 together. Designs are possible in which the sides 131 and 132 of the door 13 are inserted or slid one into the other and are held in place by cylindrical liners or metal parts on the hinge pins, without the need for screws 130. Cylinder sleeves or metal parts such as 136 can be cemented or bonded to the portions of the hinge pin they contain using a cement or adhesive binder, instead of relying on a single adjustment force. The flat part in the cylindrical metal jacket or part 136 has the end of a compression spring 212 triggered or released, pressed against it when the door 13 is fully open, to largely resist the door 13 being closed; the end chaining or interlocking of this spring 212 is riveted to the left side of the crimp frame 21 by the rivets 213 and 214. The locking switch 48 of the left door of Figure 3 is shown in Figure 4 as a micro-switch or microswitch 480 adhered to the compression spring 212 (for example, with an epoxy cement). When the compression spring 212 presses against the flat part of the cylindrical metal jacket or part 136, the lever arm 481 of the micro-switch 480 is in its relaxed position; and the microswitch 480 provides a conductive connection between the wires 482 and 483. When the compression spring 212 presses against the rounded surface of the cylindrical metal jacket or part 136, the lever arm 481 of the microswitch 480 is forced from its relaxed position; and the microswitch 480 interrupts the conductive connection between the wires 482 and 483 until the compression spring 212 is pressed again against the flat part of the cylindrical metal jacket or part 136.

While the single doors 13 and 17 shown in Figure 1 are preferred for their simplicity and ease of obtaining a rugged construction, designs in which the left and right speakers are located more separately can provide better stereophonic sound separation.

Figure 5 shows a modification of the left door 13, in which the sides 131 and 132 of the door are replaced by the sides 1310 and 1320 forming a box for an additional part of the sliding door 1370, which can be pulled outwards or extracted, to further extend the positions of the loudspeakers 14-16 from the cabinet 10. The modified left door of Figure 5 is used with a similar modification of the right door 17.

Figure 6 shows a modification of the left door 13, in which the sides 131 and 132 of the door are replaced by the sides 1311 and 1321 of a first board of the left door which forms a box by a deployment or unfolding of a second board 1371 of the left door pivoting outwards on pivots 1372 to further extend the positions of loudspeakers 14-16 from the cabinet 10. One or both of the pivots 1372 may be provided with holes for screwing the loudspeaker connection cables to through these. "The second board 1371 of the left door will fold with the first board of the same, and the folded combination will close on the left half of the image screen 12. The modified left door of Figure 6 is used with a similar modification of the right door 17 having a first and second boards, designed so that the second board can be folded with the first board and the folded combination can e Now close on the right half of the image screen 12.

Figure 7 is a sectional view of the latching or retaining mechanism for the doors of the transpxtchLe television receiver for children of Figure 1, with the right side of the crimp frame 21 and the rear cuirass 29 being separated, the same as the portions of the closed right door 17. The section is through the edge of the closed right door 17, closest to the closed left door 13, which is not seen in the view. The door 17 has an inner side 171 and an outer side 172 formed as separate plastic moldings and joined together. The groove 87 in the upper part of the inner surface of the inner side 171 of the closed door 17 is shown in this sectional view. The spring latch or ratchet 82 and the push button 84 are not separated in Figure 7, the assumed section is at the end of the slot 87. The spring latch or ratchet 82 can be formed of an elastic plastic or of a resistant metal. The chained end of the spring catch or ratchet 82 can be secured to the inside surface of the crimp frame 21, using an epoxy cement and wood screws that do not need to open its hole 88 before, screwed through the free holes in the sear of spring or ratchet 82 and screwed into blind holes or without small outlet, running inside the crimp frame 21 from its inner surface. The unleashed or released end of the spring or ratchet catch 82 is engaged, and that coupled end fits within the slots 80 and 87 on the interior surfaces of the closed doors 13 and 17 in order to engage or engage the slots behind those interior surfaces.

By pressing the push button 84, the spring latch or ratchet 82 is bent, and its engaged end is decoupled from these slots, allowing the compression springs 85 and 86 (shown in Figure 1, but not in Figure 7) to open doors 13 and 17.

Figure 8 is a front perspective view of one embodiment of the invention of the child-portable television receiver, which uses a liquid crystal color image device instead of a kinescope, has the doors 13 and 17 that cover the color image device 120 during transport, and has stereo loudspeakers 14-16 and 18-20 mounted on doors 13 and 17, which open to the left and right of the imaging device 120. The receiver cabinet 100 television of Figure 8 is more like a box than the cabinet 10 of the television receiver of Figure 1; and, thus there is no need to accommodate the neck of the kinescope, the cabinet 100 can be constructed with a dimension from the front to the smaller back, to give the screen extension. The crimp frame 210 may be flatter than the crimp frame 21 of the television receiver of Figure 1, however the crimp frame 210 is still used to provide headspace in the loudspeakers 15 and 19 to rotate inside. The rear shell 290 is more rectangular in its general shape than the rear shell 29 of the television receiver of Figure 1, and has a dimension from the front to the smaller back, but features at the back of the rear shell 290 are similar to those on the rear side of the rear shell 29. The electronics of the television receiver of Figure 8 are the conventional ones for a television receiver that uses a liquid crystal color imaging device. While the costs to produce appreciable diagonal sizes (25 cm or more) of liquid crystal imaging devices are currently very high, prices will probably come down in the near future. In addition, the higher price of liquid crystal imaging devices is more justified by the use of doors to protect the image screen.

The modalities of the invention in the monitors or in the personal computers transportable by children, by them, rather than modalities of the invention in television receivers, are different in terms of the electronics to transmit the image and in terms of the resolution provided in the image device. The computer will have different connections for peripheral devices. More than an infrared remote control unit, the peripheral devices will include a keyboard and usually one or more of the following devices: a mouse, a joystick control and a light or photosensitive pen. More than the connections that are provided to connect to a VCR and a cable or antenna, connections are provided to connect to a modem and a printer. These differences are well understood by those who design electronics. The design of the cabinet to have a substantially vertical image screen, the use of doors turning to the left and right on the image or display screen and the inclusion of stereo speakers on the doors, characterize the monitors or portable personal computers which characterizes the invention.

Figure 9-13 shows yet another embodiment of the television receiver characterized in the present invention, which has doors covering the image screen of its color kinescope, and has loudspeakers mounted on the doors, which open to the left and to the left. right of the image or display screen. The television receiver according to this additional embodiment of the invention, can likewise be of the transportable child type.

The cabinet 310 is shown as being mounted on a swivel and adjustable tilt platform 311.

In the present embodiment, platform 311 is removable, such that the television receiver can be placed directly on a support surface by means of a pair of legs 345 located at the bottom of the cabinet, near the front thereof, and a projection or flap 346 located the bottom part near the rear of the cabinet 310 (See Figure 13).

A front side of the cabinet 310 has an image screen 312 of an image device such as a kinescope as described above with respect to the embodiment of Figure 1, placed inside the cabinet. As best shown in Figure 11, the kinescope 309 has a substantial depth, due to its neck extended backward from its image screen 312, such that the cabinet 310 alternately has a complementary depth. In the television receiver of Figure 9-13, a superfrequency loudspeaker 314 and an intermediate frequency range loudspeaker 316, are located in the left door 313, and a superfrequency loudspeaker 318 and an intermediate frequency range loudspeaker 320. , are located in the right door 317. While the left door 313 and the right door 317, each including speakers in them for stereophonic reproduction at the intermediate range and higher range frequencies, a simple low frequency coil speaker 319 is mounted on the upper part of the cabinet 310 and placed near the rear of the cabinet 310 to provide mixed lower frequency frequencies. The permanent magnets in the low frequency coil loudspeaker drive motor 319 tend to be larger than those in the drive motors of the other loudspeakers, and the positioning of the low frequency coil loudspeaker 319 in the upper part near the back of the cabinet 310, keep the permanent magnets Ml in its drive motor, further away from the color kinescope, to avoid distorting the magnetic conditions near the front plate of the color kinescope, on whose front plate the screen is placed 312. As best shown in Figure 11, the low frequency coil speaker 319 is placed inside a loudspeaker box 319 'on a front face or front facing, with the angle directed upwards to ensure that the maximum sound quality will be obtained. The left and right doors 313 and 317 are formed to provide acoustic conduits conditioning the loudspeakers 316 and 320 for reflex operation, improving their acoustic efficiencies in order to allow the permanent magnets in their respective drive motors to be smaller and less intense. This help prevents these permanent magnets from causing the color kinescope to exhibit problems of chromatic purity. More specifically, the left and right doors 313 and 317 are formed with acoustic openings 350 and 351, shown in Figure 9, as they are near the bases of the respective doors below the loudspeakers in these doors. Alternatively, the acoustic openings 350 and 351 could be located near the upper parts of the doors above the loudspeakers in these doors. The acoustic openings 350 and 351 are each formed as an elongated hollow, generally horn-shaped or fork with a salt agitator opening, and better shown in Figures 9 and 12. Figure 12 is a cross-sectional view of the door 313 , showing the recessed location in the salt agitator opening 350 ', of the acoustic opening 350 in the door 313 and showing the permanent magnet M2 of the loudspeaker drive motor 316. Each of the left and right doors 313 and 317 is they bulge outwardly on the front face and on the back face of the same, as best shown in Figures 9, 11 and 12. The buckled shape not only accommodates the superfrequency speaker and the intermediate range speakers, but also internally implements redirection of the sound from the backs of the cones of the speakers 316 and 320 to the front portions of the doors 313 and 317 when they are opened to their extended position. With such arrangement, the air movements from the rear parts of the loudspeaker cones 316 and 320, are channeled around the acoustic openings 350, 351, respectively, to go out to enfasar (phase), that reinforce the radiation of the loudspeaker. direct sound from the front parts of the cones of speakers 316 and 320, respectively. This phenomenon is known as "reflecting". Since doors 313 and 317 do not have bass or coil speakers for low frequencies mounted thereon, acoustic openings 350 and 351 provided by loudspeakers 316 and 320 are operated as intermediate frequency range reflex loudspeakers.

In an alternative, in a further embodiment of the invention, unlike what was shown in Figure 9-13 where superfrequency loudspeakers 314, 318 were not used, loudspeakers 316, 320 are frequency range loudspeakers greater. The acoustic conduits through the doors 313 and 317 and the acoustic openings 350 and 351 provided by the loudspeakers 316 and 320 are operated as loudspeaker reflexes of higher frequency range in this alternative mode. Similar to the embodiment shown in Figure 1-4 and Figure 7, the left and right doors 313 and 317 are respectively hinged to the cabinet 310. Preferably, the hinges H and H 'allow the left and right doors 313 and 317, respectively, to be opened until the front faces are generally parallel to the front face of the cabinet 310, while also preventing the backward rotation of the doors out of this position towards the cabinet 10. Furthermore the hinges allow the doors to be easily opened by the user, but at the same time prevent the doors from being easily opened suddenly during transport.

When the left and right doors 313 and 317 are in the closed position, as best shown in Figure 10, the doors serve to protect the image screen 312 from possible damage during transport, in addition to protecting the user during transport , especially to children who have the side of the image screen near the stomach.

As best shown in Figure 9, the left door 313 has four elevations or projections 360, 361, 362 and 363 generally located in the corner areas of the door in the front part. Similarly, the right door 317 has four projections 365, 366, 367 and 368 similarly located as the projections 360-363 on the left door 313. The projections 360-363 and 365-368 may be in the form of elastic rubber members. , which are fitted within gaps that are formed in the door, such gaps can allow access to fasteners or latches (not shown) to hold together the structural members of each door 313 and 317. For example, the heads of Wood screws that do not need to open their hole before, are introduced through such holes in embodiments of the invention provided for mass production. The projections prevent the outer face of the crimp frame 321, as well as the inner surface of the left and right doors 313 and 317, from being scratched when the doors are closed. With equal importance, the projections keep the doors spaced apart from the outer face of the crimp frame 321, such that the doors do not inadvertently contact any of the control buttons of the main television, which will be described in more detail below. The crimp frame 321 is of a deep crimp construction in the embodiment shown in Figures 9-13. The depth of the setting is preferably, but not necessarily, approximately cm Therefore, when the left and right doors 313 and 317 are closed, the crimping or mounting of the superfrequency loudspeakers 314, 318 and the intermediate range loudspeakers 316, 320, which are on the left and right doors and the depth of the crimping frame housing the face of the image screen 312 from the opposite side of the cabinet 310, are sized to hold any of the permanent magnets of the previous speakers, a few centimeters from the face of the image screen 312 , in this way no appreciable loss of chromatic purity is apparent when the left and right doors 313 and 317 are opened, as a result of the proximity of the permanent magnets of the speakers to the face of the image screen 312 of the kinescope, when the Left and right doors 313 and 317 have been closed.

In contrast to the embodiment shown in Figure 1, in the embodiment shown in Figures 9-13, the controls of the main television are located on the surface or face opposite the crimping frame 321, instead of being inside the Crimping frame opening. Television controls can include 322 pushbuttons for GX mode, 323 for menu or option list, 324 for increasing or decreasing volume, 325 for changing the channel, and P for turning the television on or off (turn on and turn off) energy) . In addition, the surface or facing face of the crimping frame 321 may include indicator lights L to indicate, for example, when the power is on (i.e., the television is on), if the low frequency coil speaker is on, and if a fuzzy or surround sound function is activated. A socket outlet 326 for hearing aids can be placed on the surface or face opposite the crimping frame 321 to allow the user to connect standard hearing aids. As in the embodiment of Figure 1, an infrared sensor 370, for receiving the remote control signals, of an infrared remote control (similar to the remote control 28 shown in Figure 1), is also located on the front of the crimping frame 321 On the back of the television receiver, the cabinet 310 can be formed with an extension 380 having a socket or plug, for plugging in or connecting an antenna formed by two V-shaped metal rods, 381. When the receiver television is used by a child, a relative can easily remove the antenna formed by two V-shaped metal rods, 381, to avoid any damage that may involve for the child when the receiver is placed on the floor. The standard female sockets for sound / video and related inputs and outputs are shown schematically in Figure 13, being generally denoted with the reference number 390.

The cabinet 310 of the television receiver shown in Figures 9-13, includes ventilation openings V to allow the heat generated within the receiver to escape. See Figure 11 in particular, to consider this detail.

With respect to the television circuitry, reference is made to Figure 3 of the previous embodiment for the individuals of the convenient circuitry. A convenient power cord and a plug or plug (not shown) are also included.

As indicated above, the support base 11 is designed to allow the cabinet 310 to be rotated and adjusted at its inclination on the support base 311. As shown in Figures 9-11 and 13, the support base 311 is formed by a base 311A and a set of radial axes 311B extending inwardly to a central shaft member 311C. The central shaft member 311C has a bell-shaped or bell-shaped upper surface moving, receiving a dome-shaped member 395 (see Figure 11) which, alternatively is mounted separately to the television cabinet 310. In addition , by adjusting the direction of vision, the turning aspect and adjusting the inclination of the support base 311, allows the speakers located on the left and right doors 313 and 317 to be properly steered in such a way that the stereophonic sound is radiated towards the most desirable location for the user, without having to slide the support base 311 on the surface in which it is placed, the accompanying movement of the low frequency speaker 319 is accepted insofar as the reproduction of the stereophonic sound is affected . Such a feature is advantageous in a situation where a stereophonic sound reproduction apparatus, with stereo loudspeakers mounted on its doors, as is the case with the television receivers or computer monitors described herein, is placed on a finished surface. of fine wood or something similar, whose surface is susceptible to the problem of scratching when the stereophonic sound reproduction apparatus is slid or moved through it.

While the additional embodiment of Figure 9-13 shows a low frequency coil loudspeaker 319 placed in an upper rear part of the cabinet 310, alternatively, a low frequency coil loudspeaker 419 can be placed in a modified base member 411 as shown in FIG. shown in Figure 14. Surely convenient wiring is provided between the low frequency coil loudspeaker 419 and the television receiver. Alternatively, the low frequency coil loudspeaker 419, placed on the base member 411, may take the fork or horn drive form, directed downward, towards the surface supporting the modified base member 411.

Console-type cabinets or drawer for television receivers that use doors that rotate clockwise and counterclockwise, which can close on the image screen and include stereo speakers on the doors, whose speakers are on the side of the screen When the doors are opened to an extended position, they are contemplated as additional embodiments of the invention. Portable television receivers that are too large or heavy to be child-portable, but use doors that rotate clockwise and counter-clockwise, which can close on the image screen and include stereo speakers on the doors, whose speakers are they are on one side of the image screen when the doors are opened to an extended position, they are also contemplated as embodiments of the invention.

In the following claims, the phrase "a transportable child portable television or television receiver" is meant to describe a general class of devices, such general class includes a transportable child computer monitor, and whose general class includes devices having the combined capabilities to be used as a television receiver and be used as a computer monitor.

It is noted that to this date, the best method known by the applicant to carry out the aforementioned invention, is that which is clear from the present description of the invention. Having described the invention as above, the content of the following is claimed as property.

Claims (63)

1. A television receiver or computer monitor that is characterized because it comprises: a television image device with an image or display screen; a cabinet enclosing the television image device in such a way that it leaves its image or display screen exposed to the view in front of the cabinet, whose image screen is substantially vertical as it is normally seen, and has sides the right and left as seen from the opposite side of the cabinet, the cabinet has one side to the left and one side to the right in addition to its opposite side; the circuitry of the television receiver is enclosed in the cabinet together with the television image device, the circuitry of the television receiver is characterized in that it includes: a receiver for receiving radiofrequency carrier waves modulated with portions of video and sound of a television signal and supplying demodulated video and sound signals in response thereto, the circuitry of the television receiver is characterized in that it includes: video circuitry responsive to the demodulated video signal, for supplying electrical signals to the television image device that will cause images to appear on the image screen, and the circuitry of the television receiver is characterized in that it includes: sound or noise sensitive circuitry demodulated sound to provide descriptive signals of left and right sound; a left door hinged from the cabinet to cover the left side of the image screen when closed and to extend from the side to the left of the cabinet when it is opened; a right door hinged from the cabinet to cover the side to the right of the image screen when closed and to extend from the side to the right of the cabinet when it is opened; a left speaker mounted on the left door and operated by the left sound descriptive signal; Y a right speaker mounted on the right door and actuated by the right sound descriptive signal; The left and right speakers are on the side of the image screen when the left and right doors are opened to an extended position.

2. A television receiver or computer monitor according to claim 1, characterized in that it is of a portable type.

3. A television receiver or computer monitor according to claim 2, characterized in that it is a television receiver or portable computer monitor transportable by children, the cabinet encloses the television image device with the exception of its image screen.

4. A television receiver or computer monitor according to claim 1, characterized in that the left speaker has a mounting fixed on the left door, and characterized in that the right speaker has a fixed mount er. the right door.

5. A television receiver or computer monitor according to claim 1, characterized in that the enclosure encloses the television image device or computer monitor with the exception of its image screen that is mounted on a rotating platform and adjustable tilt.

6. A television receiver or computer monitor according to claim 1, characterized in that the receiver for receiving radio frequency carrier waves includes a tuner for receiving television signals retransmitted on a carrier wave of 920 MHz.

7. A television receiver or computer monitor according to claim 6, characterized in that the tuner for receiving television signals retransmitted on a carrier wave of 920 MHz, receives the television signals retransmitted from an indoor antenna located in the cabinet.

8. A television receiver or computer monitor * characterized because it comprises: a color kinescope that has an image screen that includes a pattern image of matches of different colors; video circuitry to supply electrical signals to the kinescope that will cause images to appear on the image screen; sound circuitry to supply sound descriptive signals, left and right; a cabinet that encloses the kinescope in such a way that it leaves its image or display screen exposed to the view in front of the cabinet, whose image screen is substantially vertical as is normally seen, and has sides to the right and to the left. left as seen from the opposite side of the cabinet, the cabinet has one side to the left and one side to the right in addition to its opposite side; a left door hinged from the cabinet to cover the left side of the image screen when closed and to extend from the side to the left of the cabinet when it is opened; a right door hinged from the cabinet to cover the side to the right of the image screen when it is closed and to extend from the side to the right of the cabinet when it is opened; a left speaker mounted on the left door and operated by the left sound descriptive signal; Y a right speaker mounted on the right door and actuated by the right sound descriptive signal; the left and right speakers are on the side of the image screen when the left and right doors are opened to an extended position and the speakers have electromagnetic motors with elements inside them, which are probably or are being permanently magnetized; a group of deimanation coils on the perimeter of the image screen; Y circuitry for supplying demagnetizing current to the desimanation coils for a time immediately after the following conditions are obtained simultaneously: (a) that the television receiver or computer monitor is supplied with power, (b) that the right door is completely open or substantially more or less, and (c) that the left door is completely open or substantially more or less.

9. A television receiver or computer monitor according to claim 8, characterized in that it is of a portable type.

10. A television receiver or computer monitor according to claim 9, characterized in that it is a television receiver or portable computer monitor transportable by children, the cabinet encloses the kinescope with the exception of its image screen.

11. A television receiver or computer monitor according to claim 8, characterized in that it further comprises: circuitry for supplying power to the television receiver or computer monitor only when the right door is fully open or substantially more or less at the same time that the left door is fully open or substantially more or less.

12. A television receiver or computer monitor / characterized because it comprises: a television image device with an image or visualization screen, whose chromatic purity is not affected by local magnetic fields close to its image screen; video circuitry for supplying electrical signals to the television image device that will cause images to appear on the image screen; sound circuitry to supply descriptive signals of left and right sound; a cabinet enclosing the television image device in such a way that it leaves its image or display screen exposed to the view in front of the cabinet, whose image screen is substantially vertical as it is normally seen, and has sides to the right and left as seen from the opposite side of the cabinet, the cabinet has one side to the left and one side to the right in addition to its opposite side; a left door hinged from the cabinet to cover the left side of the image screen when closed and to extend from the side to the left of the cabinet when it is opened; a right door hinged from the cabinet to cover the side to the right of the image screen when closed and to extend from the side to the right of the cabinet when it is opened; a left speaker mounted on the left door and operated by the left sound descriptive signal; Y a right speaker mounted on the right door and actuated by the right sound descriptive signal; the left and right speakers are on the side of the image screen when the left and right doors are opened to an extended position and the speakers have electromagnetic motors with elements inside them, which are probably or are being permanently magnetized;

13. A television receiver or computer monitor according to claim 12, characterized in that it is of a portable type.

14. A television receiver or computer monitor according to claim 13, characterized in that it is a television receiver or portable computer monitor transportable by children, the cabinet encloses the television image device with the exception of its image screen.

15. A television receiver or computer monitor according to claim 12, characterized in that the television image device is a liquid crystal color image device.

16. A television receiver or computer monitor, characterized in that it comprises: a color kinescope that has an image or display screen; video circuitry to supply electrical signals to the kinescope that will cause images to appear on the image screen; sound circuitry to supply descriptive signals of left and right sound; a cabinet that encloses the kinescope in such a way that it leaves its image or display screen exposed to the view in front of the cabinet, whose image screen is substantially vertical as is normally seen, and has sides to the right and to the left. left as seen from the opposite side of the cabinet, the cabinet has one side to the left and one side to the right in addition to its opposite side; a left door hinged from the cabinet to cover the left side of the image screen when closed and to extend from the side to the left of the cabinet when it is opened; a right door hinged from the cabinet to cover the side to the right of the image screen when closed and to extend from the side to the right of the cabinet when it is opened; a left speaker mounted on the left door and operated by the left sound descriptive signal; Y a right speaker mounted on the right door and actuated by the right sound descriptive signal; The left and right speakers are on one side of the image screen when the left and right doors are opened to an extended position, where the left and right speakers are constructed in such a way that they do not have permanently magnetized elements inside them.

17. A television receiver or computer monitor according to claim 16, characterized in that it is of a portable type.

18. A television receiver or computer monitor according to claim 17, characterized in that it is a television receiver or portable computer monitor transportable by children, the cabinet encloses the kinescope with the exception of its image screen.

19. A television receiver or computer monitor, characterized in that it comprises: a television image device having an image or display screen; video circuitry for supplying electrical signals to the television image device that will cause images to appear on the image screen; sound circuitry to supply descriptive signals of left and right sound; a cabinet enclosing the television image device in such a way that it leaves its image or display screen exposed to the view in front of the cabinet, whose image screen is substantially vertical as it is normally seen, and has sides the right and left as seen from the opposite side of the cabinet, the cabinet has one side to the left and one side to the right in addition to its opposite side; a left door hinged from the cabinet to cover the left side of the image screen when closed and to extend from the side to the left of the cabinet when it is opened, the left door has a first sliding member or slidable therein, this first sliding member can be deployed or opened from an opposite side of the left door to the side of the left door hinged to the cabinet; a right door hinged from the cabinet to cover the right side of the image screen when closed and to extend from the side to the right of the cabinet when it is opened, the right door has a second sliding or slidable member therein, this second sliding member can be deployed or opened from an opposite side of the right door to one side of the right door hinged to the cabinet; a left loudspeaker having a mounting fixed to the first sliding member in the left door and is actuated by the left sound descriptive signal; and a right speaker having a mount fixed to the second sliding member in the right door and is actuated by the right sound descriptive signal; and the left and right speakers are on the side of the image screen when the left and right doors are opened to an extended position.

20. A television receiver or computer monitor according to claim 19, characterized in that it is of a portable type.

21. A television receiver or computer monitor according to claim 20, characterized in that it is a television receiver or portable computer monitor transportable by children, the cabinet encloses the television image device with the exception of its image screen.

22. A television receiver or computer monitor characterized in that it comprises: a television image device with an image or display screen; video circuitry for supplying electrical signals to the television image device that will cause images to appear on the image screen; sound circuitry to supply descriptive signals of left and right sound; a cabinet enclosing the television image device in such a way that it leaves its image or display screen exposed to the view in front of the cabinet, whose image screen is substantially vertical as it is normally seen, and has sides the right and left as seen from the opposite side of the cabinet, the cabinet has one side to the left and one side to the right in addition to its opposite side; a left door hinged from the cabinet to cover the left side of the image screen when closed and to extend from the side to the left of the cabinet when it is opened, the left door has a first and second respective boards that can be folded or bending together to form a first folded or bent combination that can close on the left half of the image screen, the first board of the left door is hinged on a first side thereof to the cabinet, near the left side of the screen of image and is hinged on a second side thereof to a first side of the second board of the left door; a left loudspeaker having a mounting fixed to the second board of the left door such that it is wrapped within the first folded or bent combination, and is driven by the left sound descriptive signal; Y a right door hinged from the cabinet to cover the right side of the image screen when closed and to extend from the side to the right of the cabinet when it is opened, the right door has a first and second respective boards that can be folded or bending together to form a second folded or folded combination that can close on the right half of the image screen, the first board of the right door is hinged on a first side thereof to the cabinet near the right side of the image screen and is hinged on a second side thereof to a first side of the second board of the right door; and a right speaker having a mounting fixed to the second board of the left door such that it is wrapped within the second folded or folded combination, and is driven by the right sound descriptive signal; and the left and right door speakers are on the side of the image screen when the left and right doors are opened to their extended position.

23. A television receiver or computer monitor according to claim 22, characterized in that it is of a portable type.

24. A television receiver or computer monitor according to claim 23, characterized in that it is a television receiver or portable computer monitor transportable by children, eg encloses the television image device with the exception of its image screen.

25. A television receiver or computer monitor characterized because it comprises: a television image device having an image or display screen; video circuitry for supplying electrical signals to the television image device that will cause images to appear on the image screen; sound circuitry to supply descriptive signals of left and right sound; a cabinet enclosing the television image device in such a way that it leaves its image or display screen exposed to the view in front of the cabinet, whose image screen is substantially vertical as it is normally seen, and has sides the right and left as seen from the opposite side of the cabinet, the cabinet has one side to the left and one side to the right in addition to its opposite side; a platform in which the cabinet enclosing the television image device is mounted, with the exception of its image screen, the platform encases or encloses a spring cord bobbin for the power cord of the television receiver or computer monitor; a left door hinged from the cabinet to cover the left side of the image screen when closed and to extend from the side to the left of the cabinet when it is opened; a right door hinged from the cabinet to cover the side to the right of the image screen when closed and to extend from the side to the right of the cabinet when it is opened; a left speaker mounted on the left door and operated by the left sound descriptive signal; Y a right speaker mounted on the right door and actuated by the right sound descriptive signal; The left and right speakers are on the side of the image screen when the left and right doors are opened to an extended position.

26. A television receiver or computer monitor according to claim 25, characterized in that it is of a portable type.

27. A television receiver or computer monitor according to claim 26, characterized in that it is a television receiver or portable computer monitor transportable by children, the cabinet encloses the television image device with the exception of its image screen.

28. A television receiver or computer monitor according to claim 25, characterized in that the platform is an adjustable tilt platform.

29. A television receiver or computer monitor according to claim 25, characterized in that the platform is a rotating platform.

30. A television receiver or computer monitor according to claim 25, characterized in that the platform is a turntable and adjustable tilt platform.

31. A television receiver according to claim 25, characterized in that it includes a tuner for receiving television signals retransmitted on a carrier wave of 920 MHz.

32. A television receiver or computer monitor according to claim 31, characterized in that the tuner for receiving television signals retransmitted on a 920 MHz carrier wave receives the television signals retransmitted from an indoor antenna located in the cabinet.

33. A television receiver or monitor . computer, characterized because it comprises: a color kinescope with an image screen that includes a face, and is subject to losses of chromatic purity due to changes in the magnetic field; a setting frame surrounding the face of the image screen, housing the face of the image screen; video circuitry to supply electrical signals to the kinescope that will cause images to appear on the image screen; sound circuitry to supply descriptive signals of left and right sound; a cabinet enclosing the kinescope in such a way that it leaves the face of its image or display screen exposed to the view and the surrounding frame surrounds it, the image screen is mounted with its face housed from the opposite side of the cabinet, it is substantially vertical as is normally seen, and has one side to the right and one side to the left as seen from the opposite side of the cabinet, the cabinet has one side to the left and one side to the right in addition to its opposite side; a left door hinged from the cabinet to cover the left side of the image screen when closed and to extend from the side to the left of the cabinet when it is opened; a right door hinged from the cabinet to cover the side to the right of the image screen when closed and to extend from the side to the right of the cabinet when it is opened; a left speaker mounted on the left door and provided with a first loudspeaker motor driven by the left sound descriptive signal; the first loudspeaker motor includes a first permanent magnet; Y a right speaker mounted on the right door provided with a second loudspeaker motor driven by the right sound descriptive signal; the second loudspeaker motor includes a second permanent magnet; where, when the left and right doors are closed, the mounting of the speakers on the left and right doors and the crimping frame housing the face of the image screen, from the opposite side of the cabinet are sized to maintain the first and second permanent magnets a few centimeters beyond the face of the image screen in such a way that appreciable losses of chromatic purity are not apparent due to the change in the magnetic field, when the left and right doors are opened, as a result of the proximity of the first and second permanent magnets to the face of the kinescope image screen when the left and right doors have been closed.

34. A television receiver or computer monitor according to claim 33, characterized in that it is portable.

35. A television receiver or computer monitor according to claim 34, characterized in that it is transportable by children.

36. A television receiver or computer monitor according to claim 33, characterized in that it also comprises a base to support the cabinet.

37. A television receiver or computer monitor according to claim 36, characterized in that the cabinet can be rotated in its support base.

38. A television receiver or computer monitor according to claim 36, characterized in that the cabinet can be adjusted in its inclination in its support base.

39. A television receiver or computer monitor according to claim 36, characterized in that the cabinet can be rotated and adjusted in its inclination in its support base.

40. A television receiver or computer monitor characterized in that it comprises: a color kinescope with an image screen having a face, and is subject to losses of chromatic purity due to changes in the magnetic field; a setting frame surrounding the face of the image screen, housing the face of the image screen; video circuitry to supply electrical signals to the kinescope that will cause images to appear on the image screen; sound circuitry for supplying descriptive signals of left and right sound in a frequency range higher than the prescribed frequency and for supplying a lower sound descriptive signal mixed in a frequency range lower than the prescribed frequency; a cabinet that encloses the kinescope in such a way that it leaves the face of its image or display screen exposed to the view and the surround frame surrounds it, the image screen that is mounted with its face housed from the opposite side of the cabinet , this image screen is substantially vertical as it is normally seen, and has sides to the right and to the left as seen from the opposite side of the cabinet, the cabinet has one side to the left and a greater magnetic field strength greater than that of the second permanent magnet; where, when the left and right doors are closed, the mounting of the speakers on the left and right doors and the crimping frame housing the face of the image screen from the opposite side of the cabinet are dimensioned to maintain the first and second permanent magnets a few centimeters beyond the face of the image screen, in such a way that appreciable losses of chromatic purity are not apparent due to the change in the magnetic field, when the left and right doors are opened, as a result of the proximity of the first and second permanent magnets to the face of the kinescope image screen when the left and right doors have been closed.

41. A television receiver or computer monitor according to claim 40, characterized in that it is portable.

42. A television receiver or computer monitor according to claim 41, characterized in that it is transportable by children.

43. A television receiver or computer monitor according to claim 40, characterized in that it also comprises a base to support the cabinet. 44. A television receiver or computer monitor according to claim 43, characterized in that the cabinet can be rotated in its support base. 45. A television receiver or computer monitor according to claim 43, characterized in that the cabinet can be adjusted in its inclination in its support base. 46. A television receiver or computer monitor according to claim 43, characterized in that the cabinet can be rotated and adjusted in its inclination in its support base. 47. A television receiver or computer monitor, characterized in that it comprises: a color kinescope that has an image screen that includes a face, and is subject to losses of chromatic purity due to changes in the magnetic field; a setting frame surrounding the face of the image screen, housing the face of the image screen; video circuitry to supply electrical signals to the kinescope that will cause it to appear characterized because it also comprises a base to support the cabinet.

44. A television receiver or computer monitor according to claim 43, characterized in that the cabinet can be rotated in its support base.

45. A television receiver or computer monitor according to claim 43, characterized in that the cabinet can be adjusted in its inclination in its support base.

46. A television receiver or computer monitor according to claim 43, characterized in that the cabinet can be rotated and adjusted in its inclination in its support base.

47. A television receiver or computer monitor, characterized in that it comprises: a color kinescope that has an image screen that includes a face, and is subject to losses of chromatic purity due to changes in the magnetic field; a setting frame surrounding the face of the image screen, housing the face of the image screen; video circuitry to supply electrical signals to the kinescope that will cause images to appear on the image screen; sound circuitry for supplying descriptive signals of left and right sound in a frequency range higher than the prescribed frequency and for supplying a lower sound descriptive signal mixed in a range of frequency less than the prescribed frequency; a cabinet that encloses the kinescope in such a way that it leaves the face of its image or display screen exposed to the view and the surround frame surrounds it, the image screen that is mounted with its face housed from the opposite side of the cabinet , this image screen is substantially vertical as it is normally seen, and has sides to the right and to the left as seen from the opposite side of the cabinet, the cabinet has one side to the left and one side to the right in addition to its opposite side; a base to support the cabinet; a left door hinged from the cabinet to cover the left side of the image screen when closed and to extend from the side to the left of the cabinet when it is opened; a right door hinged from the cabinet to cover the side to the right of the image screen when closed and to extend from the side to the right of the cabinet when it is opened; a left speaker mounted on the left door and provided with a first loudspeaker motor driven by the left sound descriptive signal; the first loudspeaker motor includes a first permanent magnet; a right speaker mounted on the right door provided with a second loudspeaker motor driven by the right sound descriptive signal; the second loudspeaker motor includes a second permanent magnet; Y a low frequency coil speaker mounted at the base of the cabinet and provided with a third loudspeaker motor driven by the mixed lower sound descriptive signal, the third loudspeaker motor includes a third permanent magnet of greater magnetic field strength than the first permanent magnet; and of greater intensity of magnetic field than that of the second permanent magnet; where, when the left and right doors are closed, the mounting of the loudspeakers on the left and right doors and the crimping frame housing the face of the image screen from the opposite side of the cabinet, are sized to maintain the first and second permanent magnets a few centimeters beyond the face of the image screen, such that apparent losses of chromatic purity are not apparent due to the change in the magnetic field, when the left and right doors are opened, as a result of the proximity of the first and second permanent magnets to the face of the kinescope image screen when the left and right doors have been closed.

48. A television receiver or computer monitor according to claim 47, characterized in that it is portable.

49. A television receiver or computer monitor according to claim 48, characterized in that it is transportable by children.

50. A television receiver or computer monitor according to claim 47, characterized in that the cabinet can be rotated in its support base.

51. A television receiver or computer monitor according to claim 47, characterized in that the cabinet can be adjusted in its inclination in its support base.

52. A television receiver or computer monitor according to claim 47, characterized in that the cabinet can be rotated and adjusted in its inclination in its support base.

53. A television receiver or computer monitor characterized in that it comprises: a kinescope with an image screen that has a face; a cabinet enclosing the television image device in such a way that it leaves the face of its image or display screen exposed to view from the face in front of the cabinet, the image screen is mounted with its face substantially vertical as it is. see normally, and one side to the right and one side to the left as seen from the opposite side of the cabinet, the cabinet has one side to the left and one side to the right and another side in addition to its opposite side; a left door hinged from the cabinet to cover the left side of the image screen when closed and to extend from the side to the left of the cabinet when it is opened; a right door hinged from the cabinet to cover the side to the right of the image screen when closed and to extend from the side to the right of the cabinet when it is opened; a left speaker mounted on the left door; a right speaker mounted on the right door; and another loudspeaker mounted in the cabinet adjacent to the sides of the cabinet.

54. A television receiver or computer monitor according to claim 53, characterized in that it is portable.

55. A television receiver or computer monitor according to claim 54, characterized in that it is transportable by children.

56. A television receiver or computer monitor according to claim 53, characterized in that it also comprises a base to support the cabinet.

57. A television receiver or computer monitor according to claim 56, characterized in that the cabinet can be rotated in its support base.

58. A television receiver or computer monitor according to claim 56, characterized in that the cabinet can be adjusted in its inclination in its support base.

59. A television receiver or computer monitor according to claim 56, characterized in that the cabinet can be rotated and adjusted in its inclination in its support base.

60. A television receiver or computer monitor according to claim 53, characterized in that the other speaker comprises a coil speaker for low frequencies.

61. A television receiver or computer monitor according to claim 60, characterized in that the cabinet comprises an upper wall and characterized in that the low frequency coil speaker is mounted on said upper wall.

62. A television receiver or computer monitor according to claim 53, characterized in that the left door includes a left acoustic opening and the right door includes a right acoustic opening, the left and right acoustic openings radiate or emit sound redirected from a back of the left speaker and the right speaker, respectively.

63. A television receiver or computer monitor according to claim 53, characterized in that the left and right doors each have a set of protruding damping protrusions from an internal surface, to engage or engage the opposite side of the cabinet when the left and right doors are closed.