JP2006227056A - Projector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To hardly cause a situation that a user drops a projector because his hands slip unexpectedly when he holds a cabinet with both hands there between and carries it or lifts it up in the projector whose cabinet is constituted by joining a bottom case and a top case. <P>SOLUTION: A spacer 6 intervening at each of right and left joining spots between the bottom case 2 and the top case 3 and having elasticity is integrally provided with a covering body 5 superposed on the outer surface of the cabinet 1 so as to cover over almost whole of a joining mark 12 between the bottom case 2 and the top case 3. The spacer 6 and the covering body 5 are formed of slender rubber or silicone resin so that the surface of the covering body 5 may not be slippery. The surface of the covering body 5 is formed in curved shape where a spot nearer to a center part in a width direction is swollen more. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a projector, and in particular, to a projector having a cabinet assembled by combining a bottom case and a top case and having a size and weight that can be lifted with both hands.

  Conventionally, a projector cabinet is assembled by combining a bottom case and a top case (see, for example, Patent Document 1 and Patent Document 2). FIG. 1 of Patent Document 1 shows a hand handle that can be lowered by hand when carrying the projector, and Patent Document 2 has a screwless structure in which the case is coupled by engagement of claws. Has been suggested. There is also a known fact that the projector may be set by lifting it to a high overhead position (see, for example, Patent Document 3).

  By the way, in a projector in which a cabinet is assembled by combining a bottom case made of a resin molded body and a top case, the alignment traces of the bottom case and the top case appear linearly on both the left and right sides of the cabinet (see Patent Document 1). (See FIG. 1).

  On the other hand, at the joint location of the bottom case and the top case, the alignment resin is unavoidably inflated and contracted, and a slight misalignment caused by other causes may occur, resulting in conspicuous traces and impaired appearance. In this case, it may be possible to take a measure of performing rework to correct the dimensional error to keep the positional deviation within an allowable range. However, such rework is troublesome and troublesome. Therefore, when the positional deviation exceeds the allowable range, the bottom case or the top case is often discarded as a defective product, and such disposal processing may lead to high costs. Even if the dimensional error is within an allowable range, the possibility that the so-called chattering or the like may occur in the cabinet due to resonance of the above-mentioned matching portion due to activation of the built-in speaker cannot be denied.

On the other hand, in a projector having a size and weight that can be lifted by both hands, even if it is assumed that the projector is carried by hand, conventionally, a handle for handbag found in Patent Document 1 is attached to the cabinet. The countermeasures were just taken. For this reason, when setting the projector to an overhead height, it is often performed to hold the cabinet with both hands and lift it above the head to set it to an appropriate posture, regardless of the presence or absence of such a handle. Is called. In many cases, the projector is carried with both hands.
Japanese Patent No. 3512033 (FIG. 1) JP 2002-64284 A (0004, 0013, 0014, FIG. 13) JP 2004-302350 A

  As described above, conventionally, the appearance of the cabinet is impaired due to the misalignment between the bottom case and the top case, resulting in high costs due to defective products, and rework to correct the misalignment. In other words, there are problems that it is troublesome and troublesome to take measures to suppress the occurrence of defective products, and that there is a possibility that chatter noise may occur at the joint location.

  Also, since the projector is often carried with both hands or set to an overhead height, the situation where the hand holding the projector is slid and accidentally dropped when carrying or lifting with both hands. It is desirable to take measures that can be prevented.

  The present invention has been made in view of the above problems and circumstances, and suppresses the occurrence of defective products without performing rework to correct misalignment even if inevitable dimensional errors occur in the bottom case or top case. In addition to reducing the cost of chattering at the joint between the bottom case and the top case, the projector can be used when carrying or lifting the projector with both hands. An object of the present invention is to provide a projector that can prevent a situation in which the projector is accidentally dropped by sliding the projector.

  A projector according to the present invention includes a cabinet assembled by combining a bottom case and a top case, and has a size and weight that can be lifted with both hands. A spacer having elasticity is interposed in the spacer, and the spacer is integrally provided with a cover that covers the alignment of the bottom case and the top case appearing on the outer surface of the cabinet. It is said that it has the property of being less slippery than the surface.

  With this configuration, the spacer with elasticity not only improves the coupling stability of both cases by helping to absorb dimensional errors at the locations where the bottom case and the top case are aligned, but also at the locations where they are aligned. Generation of chatter noise is also suppressed. Therefore, it is not necessary to perform reworking for correcting misalignment due to dimensional errors that are unavoidable in the bottom case and the top case. In addition, even if the dimensional error at the mating location cannot be sufficiently absorbed by the spacer, the trace of the alignment of the bottom case and the top case that appears on the outer surface of the cabinet is a covering that is integral with the spacer. Since the cover is hidden and cannot be seen, there is no possibility that the defect of the alignment mark is conspicuous and the appearance of the cabinet is damaged. Furthermore, since the surface of the covering is less slippery than the surface of the cabinet, it helps to prevent the situation that the covering slips when the cabinet is lifted by hand. For this reason, it is less likely that the projector will be accidentally dropped by sliding the hand than when the cabinet without the cover is carried or lifted by hand.

  In addition, since the spacer having the covering body integrally is interposed at the matching portion, the covering body is held in the cabinet by the spacer. Therefore, there is an advantage that it is not necessary to take another measure such as screwing for holding the covering in the cabinet.

  In the present invention, the cabinet may be formed in a hollow box shape, and substantially the whole of the alignment traces appearing linearly on the left and right side surfaces of the cabinet may be covered with the covering. According to this, when holding the cabinet with both hands from both sides, the palm always comes into contact with the cover, so that the projector is hardly accidentally dropped by sliding the hand.

  In the present invention, it is possible to adopt a configuration in which the spacer and the covering body are made of an elongated rubber or silicon resin. According to this, depending on the difficulty of slipping on the surface due to the characteristics of the rubber or the silicon resin. , Almost never accidentally dropping the projector by sliding your hand. Further, since rubber or silicon resin is a material having a high elasticity, the effect of absorbing the dimensional error and the suppression of chatter noise by the spacer can be satisfactorily exhibited.

  In the present invention, it is possible to adopt a configuration in which the spacer is held in a pressed state at the mating point, and according to this, the dimensional error absorbing action and chatter noise suppressing action by the spacer are remarkable. In addition to being demonstrated, the covering is reliably deployed at a position where the spacer covers the alignment trace. In addition, since the covering is securely held by the spacer without wobbling in the cabinet, a situation in which the covering is displaced from the matching position and the matching position is visible does not occur.

  In the present invention, a dovetail groove having a wide groove portion and a narrow groove portion that communicates with the wide groove portion and forms the alignment traces appearing linearly on the left and right side surfaces of the cabinet is formed at the mating portion. And a wide piece portion interposed in the wide groove portion of the dovetail groove and a rib-like narrow protrusion portion interposed in the narrow groove portion, and the covering body is continuously provided on the narrow protrusion portion. It is possible to adopt the configuration, and according to this, even when gripping force is applied to the cover when holding the projector with both hands, the wide piece of the spacer engages with the wide groove of the dovetail This prevents the spacer from slipping out of the mating location and falling off.

  A projector according to the present invention includes a cabinet assembled by combining a bottom case and a top case, and has a size and weight that can be lifted with both hands, and is joined together by screwing. A spacer having elasticity is sandwiched and interposed in the substantially full length part of the front and right of each of the left and right joints of the top case and the top case, and the spacer overlaps with the outer surface of the cabinet configured as a hollow box. A cover that covers almost the entire trace of the alignment of the bottom case and the top case that appear linearly on both the left and right sides of the cabinet is integrally provided, and the spacer and the cover are formed of elongated rubber or silicone resin. The surface of the cover is less slippery than the surface of the cabinet. In addition, the surface of the covering body is formed in a curved shape that bulges to the side of the cabinet as it is closer to the central portion in the width direction, and communicates with the wide groove portion and the wide groove portion at the mating portion. A dovetail groove having a narrow groove portion that forms the alignment trace appearing linearly on both left and right side surfaces of the cabinet is formed, and the spacer has a wide piece portion interposed in the wide groove portion of the dovetail groove and its narrow width. The present invention is further embodied by adopting a configuration in which a rib-like narrow protrusion portion interposed in the groove portion is provided, and the covering body is continuously provided on the narrow protrusion portion. According to the present invention, in particular, since the hand holding the cabinet comes into contact with the cover more reliably due to the surface shape of the cover, there is an advantage that the situation of sliding the hand is more reliably prevented. Other functions of the present invention will be described in detail with reference to embodiments described later.

  As described above, according to the present invention, since the covering body covers and hides the alignment marks of the bottom case and the top case, the appearance of the cabinet is excellent regardless of the appearance of the alignment marks at the alignment points. In addition, there is an effect that the degree of freedom in designing the cabinet can be increased by the covering.

  In addition, the presence of elastic spacers at the joint between the bottom case and the top case improves the stability of the connection between the bottom case and the top case, and the occurrence of defective products due to dimensional errors. This has the effect of reducing costs and promoting cost reduction. Furthermore, even when the built-in speaker is driven at a high volume, chatter noise does not occur at the matching point, improving the usability for the user. The

  In addition, when carrying or lifting the projector with both hands, the cover that is integral with the spacer will help to prevent accidents such as sliding your hand, so the projector will be dropped unexpectedly. Is prevented. Therefore, an accident that the projector is dropped by sliding the hand when carrying or lifting the projector is less likely to occur.

  In addition, since the covering is integrally connected to the spacer interposed at the mating portion, there is an advantage that it is not necessary to take another measure such as screwing in order to hold the covering in the cabinet.

  1A is a front view of a projector according to an embodiment of the present invention, FIG. 1B is a plan view thereof, and FIG. 1C is a side view thereof. 2A is a partially omitted side view of the covering 5, FIG. 2B is a partially omitted plan view showing the covering 5 and the spacer 6, and FIG. 2C is a sectional view taken along the line IIC-IIC in FIG. 2B. 3A is a plan view of the bottom case 2, FIG. 3B is a plan view showing the inner surface side of the top case 3, FIG. 4A is an enlarged cross-sectional view of a portion along line IVA-IVA in FIG. 3B, and FIG. FIG. 4C is an enlarged cross-sectional view of a portion along the IVC-IVC line of FIG. 3A, and FIGS. 5A and 5B are enlarged cross-sectional views of the mating portions.

  The projector cabinet 1 has a hollow box-shaped main portion formed by aligning a bottom case 2 made of a resin molded body and a top case 3 made of a resin molded body in the vertical direction. The traces 12 appear linearly on the left and right side surfaces and the back surface of the cabinet 1. A front panel 4 is attached to the front end of a flat hollow box-shaped main portion formed by combining the bottom case 2 and the top case 3. The front panel 4 is provided with a projection lens 41 and a ventilation opening 42, the bottom case 2 is provided with a seat leg portion 21 having a height adjusting function, and the top case 3 is provided with a control button 31 and the like. Has been deployed. Further, as shown in FIGS. 3A and 3B, the bottom case 2 and the top case 3 are provided with screw holes 22 and insertion holes 32 for tightening screws at their four corners, and the bottom case 2 and the top case 3 are combined. After that, both the cases 2 and 3 are joined together by screwing a tightening screw inserted into the insertion hole 32 of the tightening screw into the screw hole 22 and tightening.

  This projector incorporates necessary elements such as an optical system and its drive system inside the cabinet 1 and has a size and weight that allows the cabinet 1 to be held and lifted with both hands. Therefore, it is assumed that an operation of carrying or lifting with both hands is performed on the projector.

  As shown in FIGS. 1A, 1B, and 1C, linear alignment marks 12 appearing on the outer surface of the bottom case 2 and the top case 3 on the left and right sides of the cabinet 1 The elongate covering body 5 arranged so as to straddle is covered and hidden so that the substantially full length portion is not visible. For this reason, even if the bottom case 2 and the top case 3 may be misaligned at the above-mentioned joint locations due to dimensional errors inevitably occurring in the bottom case 2 or the top case 3, the alignment marks 12 may become unsightly. Such an alignment mark 12 becomes invisible because it is covered with the elongated covering 5, and a situation in which the defect of the alignment mark 12 is conspicuous and the appearance of the cabinet 1 is impaired cannot occur. Accordingly, the bottom case 2 and the top case 3 that may cause a defect in the alignment mark 12 can be effectively used without being discarded or reprocessed, resulting in a decrease in yield or rework due to disposal. The increase of the cost accompanying such as will be avoided.

  As shown in FIGS. 2A, 2B, and 2C, the surface of the covering 5 swells toward a portion closer to the center in the width direction, and the back surface thereof is integrally connected to a spacer 6 described later. These spacers 6 and the cover 5 are integrally formed using a material having a property that the surface is less slippery than the resin that is a molding material of the bottom case 2 or the top case 3, for example, rubber or silicon resin. As shown in FIG. 5A or FIG. 5B, the cover 5 is disposed at a position that covers the alignment mark 12 by interposing the spacer 6 at the position where the bottom case 2 and the top case 3 are aligned.

  As shown in FIG. 4A or 4B, a stepped surface 25 is formed at the mating portion of the bottom case 2, and reinforcing ribs 26 are integrally formed on the inner surface of the mating portion at a predetermined interval. On the other hand (see FIGS. 3A and 4B), as shown in FIG. Then, when the projecting piece 35 is inserted outside the reinforcing rib 26 and the bottom case 2 and the top case 3 are combined, as shown in FIGS. 5A and 5B, the wide groove portion 71 and the narrow groove portion 72 are formed at the alignment portions. The dovetail groove 7 is formed in a state in which the and are communicated with each other. The wide groove portion 71 provided in the spacer 6 is interposed in the wide groove portion 71 of the dovetail groove 7, and the rib-like narrow protrusion 62 provided in the spacer 6 is the narrow groove portion 72. Is intervened.

  When the spacer 6 is interposed in the dovetail groove 7 in the structure shown in FIGS. 5A and 5B, the cover 5 and the spacer 6 are aligned even if the cover 5 connected to the spacer 6 is pulled outward. There is no risk of getting out of place. Accordingly, when the cabinet 1 is carried or lifted with both hands held, even when the hand hits the covering 5 and the covering 5 is pulled strongly, the covering 5 is removed from the fitting position and the cabinet 1 falls. In addition, since the surface of the covering 5 has the property of being hard to slip, there is less possibility that the hand slips and the cabinet 1 is accidentally dropped.

  The spacers 6 interposed at the above-mentioned alignment points are interposed between the bottom case 2 and the top case 3 in an elastic state, or are interposed between the bottom case 2 and the top case 3 in an unloaded state. You may just be. Of these, when the spacer 6 is clamped at the mating position, the spacer 6 serves to absorb the dimensional error of the bottom case 2 and the top case 3 at the mating position. 3 is not only improved in coupling stability, but also has an advantage that chatter noise is suppressed from occurring at the matching position even when the built-in speaker is driven at a large volume. On the other hand, even when intervened in an unloaded state, some of the effects of absorbing dimensional errors and suppressing the generation of chatter noise are exhibited at the mating points.

  In this embodiment, since the elongated covering 6 is provided on both the left and right side surfaces of the cabinet 1, there is also an advantage that the appearance of the cabinet 1 can be changed by coloring the covering 6.

It is a front view of the projector which concerns on embodiment of this invention. It is the same top view. It is the same side view. It is a partially omitted side view of a covering. It is a partially-omission plan view which shows a covering and a spacer. It is sectional drawing of the part which follows the IIC-IIC line | wire of FIG. 2B. It is a top view of a bottom case. It is the top view which showed the inner surface side of the top case. It is an expanded sectional view of the portion which meets an IVA-IVA line of Drawing 3B. It is an expanded sectional view of the portion which meets an IVB-IVB line of Drawing 3B. It is an expanded sectional view of the portion which meets the IVC-IVC line of Drawing 3A. It is an expanded sectional view of a match location. It is an expanded sectional view of another fitting part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cabinet 2 Bottom case 3 Top case 5 Cover body 6 Spacer 7 Dovetail groove 12 Alignment mark 61 Wide piece part 62 Narrow protrusion part 71 Wide groove part 72 Narrow groove part

Claims (6)

In a projector having a cabinet assembled by combining a bottom case and a top case, and having a size and weight that can be lifted with both hands,
A spacer with elasticity is sandwiched and interposed between the bottom case and the top case, which are joined together by screws, in the front part of the left and right joints in an elastic state, and the spacer has a hollow box shape. In addition, a cover that overlaps the outer surface of the cabinet and covers the entire trace of the alignment of the bottom case and the top case that appear linearly on both the left and right sides of the cabinet is integrated, and the spacer and the cover are elongated. The surface of the covering is formed of a rubber or silicon resin having a shape that is less slippery than the surface of the cabinet, and the closer the surface of the covering is to the center in the width direction, the closer to the cabinet. It is formed in a curved shape that bulges to the side,
A dovetail groove having a wide groove portion and a narrow groove portion that communicates with the wide groove portion and forms the alignment trace appearing linearly on the left and right side surfaces of the cabinet is formed at the mating portion, and the spacer is formed with the dovetail groove. A wide piece portion interposed in the wide groove portion and a rib-like narrow protrusion portion interposed in the narrow groove portion, and the covering body is continuously provided in the narrow protrusion portion. projector. In a projector having a cabinet assembled by combining a bottom case and a top case, and having a size and weight that can be lifted with both hands,
A spacer with elasticity is interposed at the joint between the bottom case and the top case, and the cover is integrally provided on the spacer to cover the traces of the bottom case and the top case that appear on the outer surface of the cabinet. The projector is characterized in that the surface of the covering is given a property that is less slippery than the surface of the cabinet. The projector according to claim 2, wherein the cabinet is formed in a hollow box shape, and substantially the whole of the alignment traces appearing linearly on both left and right side surfaces of the cabinet is covered with the covering. The projector according to claim 2 or 3, wherein the spacer and the covering are made of elongated rubber or silicon resin. The projector according to any one of claims 2 and 4, wherein the spacer is clamped at the mating portion in an elastic state. A dovetail groove having a wide groove portion and a narrow groove portion that communicates with the wide groove portion and forms the alignment trace appearing linearly on the left and right side surfaces of the cabinet is formed at the mating portion, and the spacer is formed with the dovetail groove. A wide piece portion interposed in the wide groove portion and a rib-like narrow protrusion portion interposed in the narrow groove portion, and the covering body is continuously provided on the narrow protrusion portion. Item 6. The projector according to any one of Item 5.

Images