TWI571693B - Reflection-type projection display - Google Patents

Description

Reflective projection display

This invention relates to a projection display and, more particularly, to a reflective projection display.

In the existing liquid crystal display, the screen must use two glass substrates, and liquid crystal molecules are filled between the two glass substrates, and then a driving circuit must be disposed around the screen to control the pixel circuit on the glass substrate to control the rotation of the liquid crystal molecules, thereby changing each Pixel transparency or the brightness it presents. Therefore, the screen structure of the liquid crystal display usually has to be provided with a bezel to accommodate the circuit board provided with the driving circuit, and the outer casing must be provided to cover the screen to protect the screen from collision and breakage, and to cover other circuit boards such as audio and video processing circuits, thereby causing The thickness of the screen is not too thin, and the display is thicker.

The object of the present invention is to provide a reflective projection display having a thin screen structure and no need for an outer casing to cover the display.

To achieve the above object, the present invention provides a reflective projection display including a housing, a stand, a screen, a short focal length projector, and a reflective element. The seat body has a top wall, a front wall, a rear wall, two side walls and a bottom wall, and the top wall, the front wall, the rear wall, the two side walls and the bottom wall together form an internal space. The top wall is provided with a groove, and the inner wall of the groove is provided with a perforation communicating with the inner space. The bracket is detachably mounted on the top wall The leading edge. The screen is detachably mounted on the stand. The short focal length projector is located in the internal space for projecting an image beam through the perforation. The reflective element is disposed on the inner wall for reflecting the image beam to the screen.

In an embodiment of the invention, the front wall may be provided with a logo. The logo can be made of a translucent material to transmit light to indicate the state of the reflective projection display. The logo can be used as a power button for the user to turn the power of the reflective projection display on or off.

In an embodiment of the invention, the rear wall may be provided with an electrical connector for receiving an external power source or transmitting a signal.

In an embodiment of the invention, the side wall may be provided with a focus knob for the user to adjust the focal length of the short focal length projector.

In an embodiment of the present invention, at least one of the top wall, the front wall, the rear wall, the two side walls, and the bottom wall may be provided with a plurality of holes communicating with the internal space for use as a heat dissipation hole or a horn hole.

In an embodiment of the invention, the bottom wall may be provided with a receiving groove for receiving the bracket.

In an embodiment of the invention, the leading edge of the top wall may be provided with two sockets. The bracket may have two straight rods and a cross rod. One ends of the two straight rods are respectively connected to the two ends of the cross rod, and the other ends of the two straight rods are respectively detachably inserted into the two sockets. The crossbar can be provided with a slot, and the edge of the screen is detachably inserted into the slot.

In an embodiment of the invention, the screen may be a light transmissive screen or an opaque screen.

In an embodiment of the invention, the reflective projection display may further comprise a remote control. The shape of the remote control corresponds to the notch of the groove.

In an embodiment of the invention, the reflective projection display may further include a storage box and a power adapter. The storage box includes a box body and a cover plate that covers the box body. Storage box can be collected Into the groove. The power adapter includes a main body, a detachable AC power cord, and a detachable DC power cord, and the main body can be fixed in the casing.

The technical means described in one embodiment above can be applied to the other embodiment described above to obtain a new embodiment as long as the technical means are not contradictory.

According to the above technical means, the electronic components of the reflective projection display of the present invention are all disposed on the base of the screen at the bottom of the screen, and the frame does not need a frame to accommodate the driving circuit, and the screen can be made of plastic material, which is light and thin and does not need to be covered by the outer casing. To protect, therefore, the screen structure can be very thin, and the appearance is simple and beautiful, and thus the display machine can be very thin, especially the upper half of the screen structure. In addition, since the screen is detachable from the stand and the stand is detachable from the stand, the reflective projection display can be conveniently stored, carried or transported. Moreover, the screen can be a light-transmissive screen, or an opaque screen, or even directly projected onto a wall or curtain without using the screen.

The above and other objects, features and advantages of the present invention will become more <RTIgt;

1, 1', 1" ‧ ‧ reflective projection display

10, 10’, 10” ‧ ‧ body

100’, 100”‧‧‧ interior space

101, 101’‧‧‧ top wall

102, 102’‧‧‧ front wall

103, 103’‧‧‧ Back wall

104, 104’‧‧‧ side wall

105, 105'‧‧‧ bottom wall

11, 11', 11" ‧ ‧ grooves

12, 12’, 12” ‧ ‧ piercing

13, 13’‧‧‧ holes

14‧‧‧ logo

15‧‧‧Power button icon

15’‧‧‧ button

16, 16'‧‧‧ electrical connectors

17‧‧‧focus knob

18, 18’‧‧‧ socket

19‧‧‧ Storage trough

20, 20’, 20” ‧‧‧ bracket

21, 21’‧‧‧ Straight

22, 22’‧‧‧ crossbar

23‧‧‧Slots

30, 30’, 30” ‧‧‧ screen

301‧‧‧ first side

302‧‧‧ second side

40, 40’, 40”‧‧‧ Short focal length projector

50, 50', 51", 52" ‧ ‧ reflective elements

60, 60'‧‧‧ remote control

70’‧‧‧ storage box

71’‧‧‧Box

72’‧‧‧ Cover

80’‧‧‧Power Adapter

81’‧‧‧ Subject

82’‧‧‧AC power cord

83'‧‧‧DC power cord

P‧‧‧ images

1 is a perspective view of a reflective projection display according to a first embodiment of the present invention; FIG. 2 is another perspective view of a reflective projection display according to a first embodiment of the present invention; 4 is a schematic view of a seat storage bracket according to a first embodiment of the present invention; FIG. 5 is a schematic view of a seat storage remote controller according to a first embodiment of the present invention; FIG. 6 is a first embodiment of the present invention; Schematic representation of another projection of a reflective projection display; 7 is a perspective view of a reflective projection display according to a second embodiment of the present invention; FIG. 8 is a cross-sectional view of a reflective projection display according to a second embodiment of the present invention; and FIG. 9 is a second embodiment of the present invention. FIG. 10 is a schematic view showing the usage of a storage box according to a second embodiment of the present invention; and FIG. 11 is a cross-sectional view showing a reflective projection display according to a third embodiment of the present invention.

In the following embodiments, the same or similar component symbols represent the same or similar components. The elements are only schematic and not drawn in full and in proportion to the actual shape. In addition, the directional terms mentioned in the embodiments, such as top, bottom, front or back, etc., refer only to the direction of the additional drawing. Therefore, the directional term used is used for explanation, and is not intended to limit the present. invention.

Please refer to FIG. 1 and FIG. 2 first. FIG. 1 and FIG. 2 are perspective views of the reflective projection display 1 according to the first embodiment of the present invention at different viewing angles. The reflective projection display 1 can be a television, a computer display or other type of display. The reflective projection display 1 includes a base 10, a bracket 20, a screen 30, a short focal length projector 40, a reflective element 50, and a circuit board (not shown). The seat body 10 has a top wall 101, a front wall 102, a rear wall 103, two side walls 104, and a bottom wall 105, and the top wall 101, the front wall 102, the rear wall 103, the two side walls 104, and the bottom wall 105 together form an internal space (not The internal space is used to accommodate the short focal length projector 40 and the circuit board. The bracket 20 is detachably provided at a front edge of the top wall 101 of the base 10. The screen 30 is detachably provided on the bracket 20.

The top wall 101 of the seat body 10 is provided with a recess 11. The inner wall of the recess 11 is provided with a through hole 12 communicating with the inner space, so that an image beam generated by the short focal length projector 40 accommodated in the inner space can be projected through the through hole 12. And the reflective element is disposed at a position on the inner wall of the recess 11 opposite to the through hole 12. The member 50 is such that the reflective element 50 reflects the image beam projected by the short focal length projector 40 onto the screen 30 for imaging. In addition, a plurality of holes 13 communicating with the internal space may be provided on the top wall 101 outside the recess 11. The holes 13 can serve as heat dissipation holes to provide a short focal length projector 40 housed in the internal space and a waste heat discharge pipe generated by the circuit board, and the holes 13 can also serve as a horn hole to provide a circuit board. A conduit for the sound produced by an internal speaker (not shown).

The front wall 102 of the body 10 can be provided with a logo 14. The logo 14 may be made of a translucent material for transmitting light to indicate the state of the reflective projection display 1, for example, light of different colors respectively indicates a state of normal operation, standby, and shutdown. Moreover, the logo 14 when transmitting light also presents a special visual effect, which is conducive to deepening the brand impression. In addition, the logo 14 can also be used as a power button for the user to press or touch to turn on or off the power of the reflective projection display 1. Therefore, the front wall 102 can also be provided with a power button icon 15 near the marker 14. To prompt the user.

The rear wall 103 of the base 10 can be provided with an electrical connector 16 for receiving external power or transmitting signals. The electrical connector 16 generally employs a receptacle connector for receiving a corresponding plug connector insertion, electrically connecting the reflective projection display 1 to an external device (such as an external power supply, an external speaker) for receiving power or signals provided by an external device. , or output a signal to an external device. The electrical connector 16 can include a DC power connector (such as a coaxial power connector), a video and audio connector (such as an HDMI connector for the HDMI interface), and a video connector (such as a D-sub connector for the VGA interface). ), audio connectors (such as TRS connectors), USB connectors, etc. The side wall 104 of the base 10 can be provided with a focus knob 17 for the user to rotate to adjust the focal length of the short focal length projector 40.

Various components and related circuits can be disposed on the circuit board, such as an internal speaker, an internal power supply device, an indicator light, a power conversion circuit, and a video processing circuit. Among them, the internal power supply device is used to set A general battery or a rechargeable battery is provided so that the reflective projection display 1 can operate for a while without an external power source. The indicator light is used to emit different colors of light according to the state of the reflective projection display 1. The power conversion circuit is configured to convert the power provided by the internal power supply device or the external power supply into a DC power supply required for each component of the reflective projection display 1. The audio processing circuit is configured to receive the external video signal, and transmit the image signal therein to the short focal length projector 40 so as to generate an image beam, and transmit the sound signal to an internal or external speaker for playback.

In an embodiment, the screen 30 may be a light-transmissive screen. Therefore, after the reflective element 50 reflects the image beam projected by the short focal length projector 40 to the first surface 301 of the screen 30, the image beam will penetrate the screen 30 to the first The two sides 302 allow the user to see the image produced on the second side 302 on the side of the second side 302 of the screen 30, i.e., the reflective projection display 1 is used as a "back" projection display. The light-transmissive screen 30 can also adopt a Fresnel lens structure, which can redistribute the energy of the light projected to the screen at its respective viewing position positions, so that the brightness of the image closer to the positive angle of the screen is higher. The more you can see the displayed image. In another embodiment, the screen 30 may be an opaque screen. Therefore, after the reflective element 50 reflects the image beam projected by the short focal length projector 40 to the first side 301 of the screen 30, the image beam is again applied to the first side. The reflection 301 allows the user to see the image produced on the first side 301 on the side of the first side 301 of the screen 30, i.e., the reflective projection display 1 is used as a "positive" projection display.

Compared with the existing display, the electronic components of the reflective projection display 1 of the present invention are all disposed on the base 10 below the screen 30. The frame 30 does not need a frame to accommodate the driving circuit, and the screen 30 can be made of plastic material, which is light and safe. It does not require a cover to protect it. Therefore, the structure of the screen 30 can be It is very thin, and the appearance is simple and beautiful, and the display machine can be very thin, especially the structure of the screen 30 in the upper half.

Referring to FIG. 3 again, FIG. 3 is a schematic diagram of the base 10 and the bracket 20 separated from the screen 30 according to the first embodiment of the present invention. In the present embodiment, the front edge of the top wall 101 of the base 10 may be provided with two sockets 18. The bracket 20 has a dome shape and has two straight rods 21 and a cross rod 22, and one ends of the two straight rods 21 are respectively connected to both ends of the cross rod 22. The other ends of the two straight rods 21 are detachably inserted into the two sockets 18, respectively. The crossbar 22 can be provided with a slot 23 such that an edge of the screen 30 is detachably inserted into the slot 23. Compared with the existing display, since the screen 30 and the bracket 20 are detachable, and the bracket 20 and the base 10 are detachable, the reflective projection display 1 can be conveniently stored, carried or transported.

Referring to FIG. 4 again, FIG. 4 is a schematic view of the housing 10 housing bracket 20 according to the first embodiment of the present invention. In the present embodiment, as shown in the bottom view of the base 10 shown in FIG. 4, the bottom wall 105 of the base 10 may be provided with a receiving groove 19. After the bracket 20 is detached from the top wall 101 of the base 10, the bracket 20 can be received in the receiving groove 19 of the bottom wall 105 of the base 10, and generally the bracket 20 is not stored beyond the bottom of the base 10 after being received in the receiving slot 19. Wall 105. In addition, a plurality of holes 13 communicating with the internal space may be disposed on the bottom wall 105 outside the receiving groove 19, and the holes 13 may serve as heat dissipation holes or horn holes.

Referring to FIG. 5 again, FIG. 5 is a schematic diagram of the base 10 housing the remote controller 60 according to the first embodiment of the present invention. In the present embodiment, the reflective projection display 1 may further include a remote controller 60, and the shape of the remote controller 60 corresponds to the notch of the recess 11 of the base 10. Therefore, when the reflective projection display 1 is not in use, the remote controller 60 can be accommodated in the recess 11 , and generally the remote controller 60 is designed to be received in the recess 11 and does not exceed the top wall 101 of the base 10 .

Please refer to FIG. 6. FIG. 6 is a schematic diagram of another projection manner of the reflective projection display 1 according to the first embodiment of the present invention, that is, directly projected on a wall or a curtain without the screen 30. In the present embodiment, the reflective projection display 1 detaches the screen 30 and the holder 20, and moves the base 10 such that the front wall 102 approaches or abuts against the wall to be projected. Therefore, the image beam projected by the short focal length projector 40 is After the reflective element 50 is reflected to the wall, the image beam is reflected by the wall, so that the user can see the image P generated on the wall on the side of the rear wall 103 of the base 10, that is, the reflective projection display 1 as "positive" Use for projection displays.

Referring to Fig. 7 and Fig. 8, Fig. 7 and Fig. 8 are respectively a perspective view and a cross-sectional view of a reflective projection display 1' according to a second embodiment of the present invention. The reflective projection display 1' includes a base 10', a bracket 20', a screen 30', a short focal length projector 40', a reflective element 50', and a circuit board (not shown). The seat body 10' has a top wall 101', a front wall 102', a rear wall 103', two side walls 104' and a bottom wall 105', and the top wall 101', the front wall 102', the rear wall 103', and the two side walls 104' And the bottom wall 105' together form an internal space 100' for accommodating the short focal length projector 40' and the circuit board.

The top wall 101' of the seat 10' is provided with a recess 11'. The inner wall of the recess 11' is provided with a perforation 12' communicating with the inner space 100' so that the image beam generated by the short focal length projector 40' housed in the inner space 100' can be projected through the perforation 12'. Whereas the inner wall of the recess 11' is opposed to the perforation 12', a reflective element 50' is provided so that the reflective element 50' reflects the image beam projected from the short focal length projector 40' onto the screen 30' for imaging. In addition, a plurality of mechanical or inductive buttons 15' may be disposed on the front edge of the top wall 101', for example, including a power button, a menu button, and a direction button for the user to press or touch to realize the power supply. Turns on or off, such as contrast display parameters or volume adjustment. Inside the groove 11' The wall and side wall 104' may be provided with a hole 13' communicating with the internal space 100' for use as a heat dissipation hole or a horn hole. The rear wall 103' can be provided with an electrical connector 16' for receiving an external power source or transmitting a signal.

The bracket 20' is detachably provided at the leading edge of the top wall 101' of the base 10', and the screen 30' is fixed to the bracket 20'. In the present embodiment, the bracket 20' has a shape of two straight rods 21' and two cross rods 22', one end of which is connected to one end of the two cross rods 22'. The other ends of the two straight rods 21' are detachably inserted into the sockets 18' of the front edge of the top wall 101' of the seat body 10', respectively. An edge of the screen 30' is affixed to the two crossbars 22'. Since the bracket 20' is detachable from the base 10', the reflective projection display 1' can be conveniently stored, carried or transported.

Referring to Fig. 9 and Fig. 10, Fig. 9 is a schematic view showing the storage body 70' of the seat body 10' according to the second embodiment of the present invention, and Fig. 10 is a schematic view showing the usage of the storage case 70'. In the present embodiment, the reflective projection display 1' further includes a storage case 70', a power adapter 80', and a remote controller 60'. When the reflective projection display 1 ′ is not in use, the storage box 70 ′ can be accommodated in the recess 11 ′ as shown in FIG. 9 , and generally the storage box 70 ′ is not stored in the recess 11 ′ and does not exceed the seat 10 ′. Top wall 101'. As shown in FIG. 10, the storage case 70' includes a case 71' and a cover 72' that covers the case 71', and the power adapter 80' includes a main body 81', a detachable AC power cord 82', and a detachable The DC power cord 83', wherein the main body 81' is fixed in the casing 71', and the AC power cord 82' and the DC power cord 83' can be detached and housed in the casing 71' when not in use. Further, the remote controller 60' may be housed in the casing 71' when not in use.

Please refer to FIG. 11, which is a cross-sectional view of a reflective projection display 1" according to a third embodiment of the present invention. In this embodiment, the reflective projection display 1" includes a base 10", a bracket 20", a screen 30", Short focal length projector 40", two reflective elements 51" and 52" and a circuit board (not shown). Seat 10" It has an internal space 100" for accommodating the short focal length projector 40" and the circuit board. The top wall of the seat body 10" is provided with a recess 11". The inner wall of the recess 11" is provided with a through hole 12" that communicates with the inner space 100" such that an image beam generated by the short focal length projector 40" housed in the inner space 100" can be projected through the perforation 12". The reflective member 51" is disposed on the inner wall of the recess 11" opposite to the through hole 12", and the reflective member 52" is disposed on the inner wall above the through hole 12". The reflective member 51" is used to project the short focal length The image beam projected by the machine 40" is reflected to the reflective element 52", which in turn reflects the image beam onto the screen 30" for imaging.

Although the present invention has been disclosed in the above preferred embodiments, it is not intended to limit the present invention, and those skilled in the art can make some modifications and refinements without departing from the spirit and scope of the present invention. The scope of protection is subject to the definition of the scope of the attached patent application.

1‧‧‧Reflective projection display

10‧‧‧ body

101‧‧‧ top wall

102‧‧‧ front wall

103‧‧‧ Back wall

104‧‧‧ side wall

105‧‧‧ bottom wall

11‧‧‧ Groove

12‧‧‧Perforation

13‧‧‧ hole

16‧‧‧Electrical connector

17‧‧‧focus knob

20‧‧‧ bracket

30‧‧‧ screen

301‧‧‧ first side

302‧‧‧ second side

40‧‧‧Short focal length projector

50‧‧‧reflecting elements

Claims (8)

A reflective projection display comprising: a body having a top wall, a front wall, a rear wall, two side walls and a bottom wall, the top wall, the front wall, the rear wall, the two side walls and the bottom wall Forming an internal space, the top wall is provided with a recess, an inner wall of the recess is provided with a through hole communicating with the inner space, the front edge of the top wall is provided with two sockets, and the bottom wall is provided with a receiving groove; a bracket can be received in the receiving slot, the bracket has two straight rods and a cross bar, one ends of the two straight rods are respectively connected to two ends of the cross bar, and the other ends of the two straight rods are respectively detachably inserted The two poles, the crossbar is provided with a slot; a screen, an edge of the screen is detachably inserted into the slot; a short focal length projector is disposed in the inner space for projecting an image beam through The perforation; and a reflective element disposed on the inner wall for reflecting the image beam to the screen. The reflective projection display of claim 1, wherein the front wall is provided with a mark, and the mark is made of a translucent material for transmitting light to indicate the state of the reflective projection display; wherein the A power button for the user to turn the power of the reflective projection display on or off. The reflective projection display of claim 1, wherein the rear wall is provided with an electrical connector for receiving an external power source or transmitting a signal. The reflective projection display of claim 1, wherein the side wall is provided with a focusing knob for the user to adjust the focal length of the short focal length projector. The reflective projection display of claim 1, wherein the top wall, the front wall, the rear wall, the two side walls, and at least one of the bottom walls are provided with a plurality of holes communicating with the internal space. Used as a vent or horn hole. The reflective projection display of claim 1, wherein the screen is a light transmissive screen or an opaque screen. The reflective projection display of claim 1, further comprising a remote controller having a shape corresponding to a notch of the groove. The reflective projection display of claim 1, further comprising: a storage box comprising a box body and a cover plate covering the box body, the storage box being received in the recess; and a power source The adapter includes a main body, a detachable AC power cord, and a detachable DC power cord, the body being fixed in the casing.