JP4789893B2 - Battery unit, projection display main body, and projection display device - Google Patents

Description

  The present invention relates to a projection display device main body, a battery unit provided on the bottom surface thereof, and a projection display device including them, and more particularly to a projection angle adjustment mechanism thereof.

  For a projection display device of the type in which the battery unit is mounted on the bottom surface of the projection display device body, the projection angle adjustment mechanism on the bottom surface of the projection display device body is covered by the battery unit, and the projection angle adjustment function is lost. In order to avoid this, conventionally, the configuration is such that a projection angle adjusting mechanism substantially the same as that of the main body of the projection display device is provided on the bottom surface of the battery unit. However, although it is not used simultaneously, it is necessary to provide two similar mechanisms, and there is a problem that the cost increases.

  As an improvement measure, for example, a configuration in which the angle of the projection display device main body can be adjusted with respect to the battery portion placed horizontally on the desk by joining the battery portion and the projection display device main body in a rotatable manner. It is shown in Patent Document 1.

JP-A-6-82765 (page 8, FIG. 17)

  However, in the configuration as described in the above document, the electrical contact portion between the battery unit and the projection display main body must also be configured to rotate, resulting in a mechanically complicated configuration and reliability. There was a problem that the decrease in cost and the cost would be expensive.

  The present invention has been made in order to solve the above-described problems, and suppresses a decrease in reliability and an increase in cost due to a complicated mechanism, and also when a projection angle is mounted on the bottom surface of the projection display device main body. It is an object of the present invention to obtain a battery unit that can be adjusted, a projection display device body on which the battery unit is mounted, and a projection display device including them.

  The battery unit according to the present invention is a battery unit that is detachably joined to the bottom surface of the projection display device main body, the engagement unit provided on the top surface for engaging with the projection display device main body, the projection type A cradle that abuts the bottom surface of the extendable body leg provided on the bottom surface of the projection display device body when joined to the display device body, and an elastic body that urges the cradle in a direction to abut the body leg portion The battery legs are configured to move integrally with the cradle according to the expansion and contraction of the main body legs and project variably from the bottom surface.

  A projection display device body according to the present invention is a projection display device body in which a battery unit can be detachably joined to a bottom surface, and is provided on the bottom surface. Engagement receiving part that engages and is fixed to the engaging part provided on the upper surface, provided at a position that can contact the vertically movable cradle provided on the battery part when fixed, and expands and contracts in the lower direction Consists of flexible body legs.

  A projection display device according to the present invention includes the battery unit and the projection display device body.

  As an effect of the present invention, since the battery unit includes a projection angle adjusting mechanism that expands and contracts in conjunction with the expansion and contraction operation of the legs of the projection display device body, the battery unit is not mounted even when the battery unit is mounted. As usual, it is possible to adjust the projection angle with a simple operation by the projection angle adjustment mechanism of the projection display device body, and the projection angle should be set under the same conditions as the projection angle of the projection display device body. Is possible. In addition, the projection angle adjustment mechanism when the battery unit is mounted does not have a rotating part at the electrical contact portion, and can be realized with a simple configuration, and it is possible to suppress a decrease in reliability and an increase in cost.

  Hereinafter, the present invention will be specifically described with reference to the drawings showing embodiments thereof.

<Embodiment 1>
(Constitution)
The configuration of the projection display apparatus according to this embodiment will be described. FIG. 1 is a perspective view showing a configuration of the projection display apparatus main body 101.

  The projection display main body 101 includes a main body casing 1. The main body housing 1 includes a projection lens 2 on the front surface, and main body legs 3a and 3b as projection angle adjusting mechanisms arranged to be extendable in the lower direction on the front left and right of the bottom surface of the main body housing 1. The main body legs 3a and 3b are provided at positions where they can come into contact with cradles 13c and 13d which are provided in the battery unit 102, which will be described later, and which are movable in the vertical direction. Further, a main body fixing leg portion 4 is installed at a position equidistant from the main body leg portions 3a and 3b on the rear side of the bottom surface of the main body housing 1, and a main body side battery connection terminal 5 is formed on the side thereof. Engagement holes (engagement receiving parts) 6a and 6b for mounting the battery part 102 are formed in the center left and right of the bottom surface. The engagement holes 6a and 6b are brought into contact with and slide on the upper surface of the battery unit 102, thereby engaging and fixing claws 12a and 12b provided on the upper surface of the battery unit 102, which will be described later.

  FIG. 4 is a perspective view showing the battery unit 102 according to the present embodiment. The battery unit 102 is configured to be detachably joined to the bottom surface of the projection display main body 101.

  The battery unit 102 includes a battery case 11, and the battery case 11 contains a battery (battery). The battery case 11 includes claw portions (engagement portions) 12 a and 12 b that engage with the engagement holes 6 a and 6 b of the main body housing 1, respectively. Further, battery leg portions 13 a and 13 b are arranged on the front left and right of the bottom surface of the battery case 11, and are held so as to be slidable up and down with respect to the battery case 11.

  Above the battery legs 13a and 13b, when the battery section 102 is joined to the projection display main body 101, cradles 13c and 13d that come into contact with the bottom surfaces of the main body legs 3a and 3b, and the battery legs 13a. , 13b and cradles 13c, 13d are wound around a connecting rod, and springs (elastic bodies) 14a, 14b are installed to urge the cradles 13c, 13d in a direction to contact the main body legs 3a, 3b.

  The battery legs 13a and 13b move integrally with the cradles 13c and 13d according to the expansion and contraction of the main body legs 3a and 3b, and are variably projected from the bottom surface of the battery part 102. The battery side projection angle adjustment mechanism 105 is configured by the battery legs 13a and 13b, the cradles 13c and 13d, and the springs 14a and 14b. Further, an elongated hole 16 for accommodating the main body fixing leg 4 is formed at the rear of the upper surface of the battery case 11, and a battery-side battery connection terminal 15 is formed on the side thereof.

  FIG. 5 is a side view of the battery unit 102. At the rear of the bottom surface of the battery case 11, as with the projection display device main body 101, battery fixing legs 17 are formed that are arranged at equal distances from the battery legs 13 a and 13 b.

  FIG. 6 is a perspective view when the battery unit 102 is attached to the projection display apparatus main body 101. By engaging and sliding the upper surface of the battery unit 102 and the bottom surface of the projection display device main body 101, the engagement holes 6a and 6b are engaged with and fixed to the claw portions 12a and 12b. At this time, the cradles 13c and 13d of the battery unit 102 are disposed in contact with the bottom surfaces of the main body legs 3a and 3b of the projection display apparatus main body 101. The projection display apparatus 103 is constituted by the projection display apparatus main body 101 and the battery unit 102.

(Operation)
The operation of the leg portions in the projection display apparatus having the above configuration will be mainly described.

  First, a case where the battery unit 102 is not mounted, that is, the projector unit 102 is configured only with the projection display apparatus main body 101 will be described.

  FIG. 2 is a side view of the projection display main body 101. The main body legs 3 a and 3 b show the most contracted state, and the projection display device main body 101 is in a horizontal state substantially parallel to the installation surface 7. When the projection display apparatus main body 101 is operated with an external power supply (not shown), the battery unit 102 is not attached as shown in FIG.

FIG. 3 is a side view showing a posture in which the main body leg portions 3 a and 3 b are extended to a height B and the projection lens 2 side is inclined upward by an angle D with respect to the installation surface 7. When the image projected from the projection lens 2 is shifted to a desired height, the amount of protrusion of the main body legs 3a and 3b is adjusted. The angle D at this time is as follows from the distance A from the midpoint of the main body legs 3a, 3b to the main body fixing leg 4, the height B of the main body legs 3a, 3b, and the height C of the main body fixing legs 4. It is represented by the following mathematical formula (1).
D = tan ⁻¹ ((BC) / A) (1)
Although not shown, if the protrusions of the main body legs 3a and 3b are individually adjusted, it is possible to adjust the left and right inclination of the projection display apparatus main body 101.

  Next, the operation of the legs when the battery unit 102 is attached to the projection display apparatus main body 101 will be described.

  When mounting, as shown in FIG. 6, the battery unit 102 is slid from the rear to the front of the projection display main body 101 in close contact, and the battery unit 102 is inserted into the engagement holes 6 a and 6 b of the main body housing 1. The claws 12a and 12b are engaged with each other, the main body side battery connection terminal 5 and the battery side battery terminal 15 are electrically connected, and power is supplied from the battery unit 102 to the projection display apparatus main body 101.

  FIG. 7 is a side view showing a state where the battery unit 102 is mounted on the projection display main body 101, and the main body legs 3a and 3b show the most contracted state. At this time, the cradles 13c and 13d of the battery legs 13a and 13b abut against the body legs 3a and 3b, respectively, by the urging force of the springs 14a and 14b, but the battery legs 13a and 13b are substantially parallel to the installation surface 7. The projection display device 103 is in a horizontal state substantially parallel to the installation surface 7.

  Next, when the projection display device 103 is tilted and the image projected from the projection lens 2 is shifted to a desired height, the base legs 3a and 3b are extended as shown in FIG. The battery legs 13a and 13b extend from the bottom surface of the battery case 11 by the same height B as the main body legs 3a and 3b. FIG. 9 is a perspective view of the projection display device 103 in this state.

  Since the positional relationship between the main body legs 3a and 3b and the main body fixing leg 4 and the positional relationship between the battery legs 13a and 13b and the battery fixing leg 17 are set under the same conditions, the projection display main body 101 is tilted. The angle D is determined from the distance A from the middle point of the battery legs 13a and 13b to the battery fixing leg 17, the height B of the battery legs 13a and 13b, and the height C of the battery fixing leg 17 as in , Represented by the mathematical formula (1).

(effect)
As an effect of the present invention, since the battery side projection angle adjusting mechanism 105 that expands and contracts in conjunction with the expansion and contraction operation of the main body legs 3a and 3b is provided in the battery unit 102, even when the battery unit 102 is mounted, The projection angle can be adjusted by a simple operation of the main body legs 3a and 3b, as in the case of not wearing it, and the projection angle should be set under the same conditions as the projection angle of the projection display device main body 101. Is possible. In addition, the battery-side projection angle adjustment mechanism 105 has no rotating portion at the electrical contact portion, and can be realized with a simple configuration, and can suppress a decrease in reliability and an increase in cost.

<Embodiment 2>
(Constitution)
FIG. 10 is a perspective view showing the configuration of the battery unit 104 according to the present embodiment.

  As in the first embodiment, the battery legs 13a and 13b are provided with cradles 13e and 13f that are in contact with the bottom surfaces of the main body legs 3a and 3b. In the present embodiment, the cradle 13e and 13b are provided. 13f has an inclined surface on the front side. That is, the cradle 13e, 13f has an inclined surface at a site where the claw portions 12a, 12b begin to contact the main body legs 3a, 3b in the process of engaging with the engagement holes 6a, 6b.

  Since other configurations are the same as those of the first embodiment, detailed description thereof is omitted here.

(Operation)
Next, the operation of the legs when the battery unit 104 is attached to the projection display apparatus main body 101 will be described.

  FIG. 11 is a side view when the battery unit 104 is attached to the projection display apparatus main body 101. The battery unit 104 is moved forward while the bottom surface side of the projection display apparatus main body 101 and the upper surface side of the battery unit 104 are brought into close contact with each other. The state of sliding is shown.

  In FIG. 11, the main body legs 3a and 3b are mounted in an extended state. After the main body legs 3a and 3b abut on the inclined surfaces of the cradle 13e and 13f, the cradle 13e and 13f are formed by the inclined surface. It slides downward while coming into contact with the main body legs 3a, 3b. The battery legs 13a, 13b slide downward together with the cradle 13e, 13f, the amount of protrusion from the bottom surface of the battery 104 changes, and the projection angle of the projection display device 103 also changes.

(effect)
As described above, according to the present embodiment, the projection display apparatus main body 101 can be mounted with the battery unit 104 with the projection angle at the time of use, that is, with the main body legs 3a and 3b extended. If the height E of the inclined surface is set to be larger than the adjustment range of the main body legs 3a and 3b, the battery unit 104 can be smoothly mounted no matter what projection angle the projection display device main body 101 is used. It can be used continuously at the same projection angle after installation.

It is a perspective view which shows the projection type display apparatus main body which concerns on Embodiment 1 of this invention. It is a side view which shows the projection type display apparatus main body which concerns on Embodiment 1 of this invention. It is a side view which shows the state at the time of projection angle adjustment of the projection type display apparatus main body which concerns on Embodiment 1 of this invention. It is a perspective view which shows the battery part which concerns on Embodiment 1 of this invention. It is a side view which shows the battery part which concerns on Embodiment 1 of this invention. It is a perspective view which shows mounting | wearing of the battery part which concerns on Embodiment 1 of this invention. 1 is a side view of a projection display apparatus according to Embodiment 1 of the present invention. It is a side view at the time of projection angle adjustment of the projection type display apparatus which concerns on Embodiment 1 of this invention. 1 is a perspective view of a projection display apparatus according to Embodiment 1 of the present invention. It is a perspective view which shows the battery part which concerns on Embodiment 2 of this invention. It is a side view which shows mounting | wearing of the battery part which concerns on Embodiment 2 of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Main body case, 2 Projection lens, 3a, 3b Main body leg part, 4 Main body fixed leg part, 5 Main body side battery connection terminal, 6a, 6b Engagement hole, 7 Installation surface, 11 Battery case, 12a, 12b Claw part, 13a, 13b Battery leg, 13c, 13d, 13e, 13f Receiving base, 14a, 14b Spring, 15 Battery side battery connection terminal, 16 Long hole, 17 Battery fixing leg, 101 Projection display main body, 102, 104 Battery Part, 103 projection type display device, 105 battery side projection angle adjustment mechanism, A distance, B, C, E height, D angle.

Claims (4)

A battery unit detachably joined to the bottom surface of the projection display main body,
An engaging portion provided on an upper surface for engaging with the projection display main body;
A cradle that comes into contact with the bottom surface of the extendable body leg provided on the bottom surface of the projection display device body when joined to the projection display device body;
An elastic body that urges the cradle in a direction to abut against the main body leg,
A battery leg that moves integrally with the cradle according to the expansion and contraction of the main body leg and variably protrudes from the bottom surface;
Having a battery part. The joining with the projection display main body is performed by abutting and sliding the upper surface on the bottom surface of the projection display main body,
The battery unit according to claim 1, wherein the cradle has an inclined surface at a site where the cradle starts to contact the body leg in the joining process. A projection type display device main body capable of detachably joining the battery part on the bottom surface,
An engagement receiving portion which is provided on the bottom surface and engages and is fixed to an engagement portion provided on the upper surface of the battery unit by sliding in contact with the upper surface of the battery unit;
A body leg that is provided at a position capable of contacting a pedestal that is movable in the vertical direction provided in the battery unit at the time of fixing, and that is extendable in the lower direction;
A projection display main body. The battery unit according to claim 1 or 2,
A projection display main body according to claim 3;
A projection display device comprising:

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