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Projector

一种投射型影像、显示装置的技术，应用在放映装置、光学、仪器等方向，能够解决跌倒等问题

Active Publication Date: 2009-09-09
SANYO ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Moreover, in this case, since relatively heavy optical system devices such as the aspheric mirror 102 are located at the upper position, and especially the heavy aspheric mirror 102 has a shape protruding upward to the side surface on the projection side, the center of gravity Located above the projection side, there is a problem that it is easy to fall in the direction of the projection side, more specifically, in the R direction shown in the illustration

Method used

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Embodiment approach 1

[0027] Next, Embodiment 1 of the present invention will be described in detail with reference to the drawings. The projection type image display device of this embodiment is a liquid crystal projector using a liquid crystal panel as a light modulation element, such as figure 1 As shown, a light source 2 , a projection lens system component 3 , an aspheric mirror 4 , a control circuit component (not shown) and the like are accommodated inside the housing 1 . In this case, if the frame body 1 that does not waste space in the frame body 1 is formed, it becomes image 3 The configuration of the projection type image display device as shown in the reference example is shown. which is, image 3 It is a schematic configuration diagram of a projection type image display device as a reference example, (a) is a plan view in the case of wall projection / floor placement installation, (b) is a reverse projection side (reverse wall side) view in this installation case, ( c) is a side vie...

Embodiment approach 2

[0039] Embodiment 2 such as Figure 6 As shown, the shape of the mirror-side outer surface 6 is changed. That is, in this embodiment, a symmetrical inclined surface is formed only in the vicinity of the boundary line between the first outer surface 61 and the second outer surface 62 of the mirror side outer surface 6 . On the other hand, the other parts of the frame body 1 are formed as approximately rectangular parallelepipeds.

[0040] Since the projection-type video display device according to Embodiment 2 is configured as described above, when the projection-type video display device is configured to be used for floor projection / floor placement, the lower part of the housing 1 is more forward than conventional (projection). side) extended setting state, so the frame body 1 can be prevented from falling. Furthermore, since the frame body 1 is formed in a box shape closer to a cuboid, a more stable appearance can be presented.

Embodiment approach 3

[0042] In Embodiment 3, when the projection type image display device is configured as a floor projection / floor installation and used, instead of occupying the space below the aspheric mirror 4 as in the case of Embodiment 1 or Embodiment 2, form box 1, and as Figure 7 As shown, the pedestal 8 can be detachably mounted on the bottom.

[0043] Since Embodiment 3 is configured as above, when the projection type image display device is configured to be used for floor projection / floor installation, by installing the pedestal 8 on the lower surface of the casing 1, the casing 1 can be hardly enlarged. In the case of the volume of the lower part, it prevents a fall. Therefore, weight reduction and cost reduction of the housing 1 can be achieved.

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Abstract

A projector for emitting projection light in a projection direction used in a floor set-wall projection and floor set-floor projection modes. The device includes an aspheric reflection mirror, which reflects light from a light source in the projection direction, and a case, which accommodates the mirror. The mirror reflects the projection light to emit the projection light through an opening in the case. The case includes a first setting surface, which is arranged adjacent to a floor when in the floor set-wall projection mode, and a second setting surface, which is arranged adjacent to the floor when in the floor set-floor projection mode. The second setting surface in the floor set-floor projection mode is located immediately below the mirror and bulges to a location that is in alignment with or frontward from a front end of the mirror.

Description

technical field [0001] The present invention relates to a projection type image display device for projecting images produced by computers, or images recorded in recording media such as optical disks and magnetic tapes, onto a special screen, wall, or floor. Background technique [0002] Such projection-type video display devices are used as video display devices in various facilities such as home theaters, conference rooms, training rooms, classrooms, entertainment venues, various exhibition rooms, and photography studios. Moreover, for existing projection-type image display devices, most of the distances between the frame of the projection-type image display device and the projection surfaces of the screen, wall, etc. are several meters, because it is impossible to place light-shielding devices between them. , so there is a problem of restrictions on the use environment. In order to eliminate such inconveniences, in recent years, the distance between the housing and the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/00G03B21/28
CPCG03B21/28
Inventor 矢崎修央
Owner SANYO ELECTRIC CO LTD
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