JP6201979B2 - Shading plate mounting structure and lighting device - Google Patents

Description

  The present invention relates to a light shielding plate mounting structure in which a light shielding plate that shields light distribution outside the desired illumination range of light from a light source is fixedly attached to the inside of the device, and an illumination device including the light shielding plate mounting structure.

  Some illuminating devices include a light shielding plate that shields light distribution outside the desired illumination range in order to efficiently distribute light from the light source only to the desired illumination range. For example, in an illuminating device in which the periphery of a light source is covered with a translucent cover in order to give a uniform appearance, in order to distribute light from the light source only to the irradiation range on the front side, A light shielding plate is disposed between the two.

  The light shielding plate is attached to a support portion in the lighting device via a fixing screw (see, for example, Patent Document 1). In addition, the light shielding plate may be attached to a support portion in the lighting device with a double-sided tape or the like.

JP 2010-244991 A

  However, in the configuration in which the light shielding plate is fixed to the support portion in the lighting device using another component such as a fixing screw or a double-sided tape, the cost increases due to an increase in the number of components and the assembly work becomes complicated.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a light shielding plate mounting structure and an illumination that enable a light shielding plate to be easily and reliably fixed to a support portion in a lighting device, reduce costs by reducing the number of parts, and facilitate assembly work. To provide an apparatus.

  The light-shielding plate mounting structure of the present invention includes a hole, a bent portion, a holding portion, and a rib for standing and fixing a flat light-shielding plate on a support member. The hole is formed through a part of the light shielding plate in the thickness direction. The bent portion is formed to extend downward with the lower end of the light shielding plate as a base, and has a cut from the open end to the intermediate portion. The holding portion has a claw that is erected from the support member and that fits into the hole portion and contacts at least the lower edge of the hole portion with the bent portion bent. The rib is disposed on the support member with a gap larger than the thickness of the light shielding plate and less than or equal to the distance between the notch and the base in the thickness direction of the light shielding plate. Inserted in

  When the light shielding plate is inserted between the holding portion and the rib from above, the claw is inserted into the hole, and the rib is inserted into the cut. The light shielding plate is restricted from moving upward by the contact of the claw with the lower edge of the hole, and is restricted from moving in the horizontal direction by inserting the rib into the notch. The light shielding plate is pressed against the holding portion by the elastic force of the bent portion, and is attached to the support member in a state where the restriction of movement in the upward and horizontal directions is maintained.

  In this configuration, it is preferable to match the positions of the hole and the bent portion and match the positions of the rib and the holding portion in the direction perpendicular to the thickness direction of the light shielding plate and the insertion direction. The elastic force of the bent portion acts directly on the hole portion, so that the restriction of the movement of the light shielding plate in the upward and horizontal directions can be more reliably maintained.

  It is preferable that the nail | claw part has an inclined surface where the protrusion amount from a holding | maintenance part becomes large toward the downward direction. It becomes easy to insert a light shielding plate between the rib and the holding portion.

  An illumination device of the present invention includes a support member that is a bottom surface of a housing that houses a light source therein, a light shielding plate that is erected and attached to a part of the support member, and the light shielding plate attachment structure described above. Yes.

  According to the present invention, the light shielding plate can be easily and reliably fixed to the support portion in the lighting device by the elastic force, and the cost can be reduced and the assembly work can be facilitated by reducing the number of components.

It is sectional drawing of the illuminating device which concerns on embodiment of this invention. It is the schematic of the plane inside the lighting device. (A) is an external view of the principal part of the supporting member of the illuminating device, (B) is an external view of the principal part of the light-shielding plate used for the illuminating device. (A) And (B) is sectional drawing which shows the attachment state of the light-shielding plate in the illumination device, (C) is an external view of the principal part which shows the attachment state of the light-shielding plate in the illumination device. It is sectional drawing of the principal part which shows the light-shielding plate attachment structure which concerns on another embodiment of this invention.

  Hereinafter, an illumination device to which a light shielding plate mounting structure according to an embodiment of the present invention is applied will be described with reference to the drawings.

  As shown in FIGS. 1 and 2, the illumination device 10 according to the embodiment of the present invention includes a support member 1, a cover 2, a light source 3, and a light shielding plate 5. The support member 1 constitutes the bottom surface of the lighting device 10. As an example, a holding portion 11 that protrudes vertically from the entire circumference is integrally formed by resin molding, and the battery housing portion 4 and the holding portion 11 are formed inside the holding portion 11. A light source holding member (not shown) is integrally formed.

  The cover 2 is formed, for example, in a translucent cylindrical shape having a frustoconical shape with a bottom opened using a translucent resin as a material. The cover 2 is fixed to the support member 1 by fitting the lower end portion thereof to the holding portion 11 of the support member 1. The light source 3 is, for example, an LED package configured by mounting LEDs on a substrate. The cover 2 transmits light emitted from the light source 3 and distributes the light to the outside.

  On the upper surface of the support member 1, there is no other storage between the light source 3 and the cover 2 on the front side of the light source 3. There are storage items. When the light source 3 is turned on, the entire interior of the cover 2 is irradiated with the light from the light source 3, so that shadows of storage items such as the battery storage unit 4 appear on the back side of the cover 2, and an appearance image of the lighting device 10 is obtained. descend.

  Therefore, by attaching the light shielding plate 5 in the vicinity of the inner surface of the back surface of the cover 2 on the upper surface of the support member 1, the light from the light source 3 is prevented from being distributed from the back surface side of the cover 2 to the outside. The appearance image of the lighting device 10 is prevented from being deteriorated due to the shadow of the stored item such as 4.

  The light-shielding plate 5 is a plate-like body having light-shielding properties and flexibility, and any material such as paper, resin, or a composite material thereof can be used on the assumption that this condition is satisfied. The support member 1 has claws 13 formed at two locations corresponding to both end portions in the lateral direction of the light shielding plate 5 on the inner peripheral surface of the holding portion 11, and ribs 12 are formed at two locations facing the upper surface claws 13. It is erected. The light shielding plate 5 is attached between the rib 12 and the claw 13 on the upper surface of the support member 1 in a curved state in plan view.

  As shown in FIG. 3A, the rib 12 has a rectangular flat plate shape as an example, and is erected on the upper surface 1 </ b> A of the support member 1. As an example, the claw 13 has a wedge shape with a large downward protrusion, and is formed at a position facing the rib 12 on the inner peripheral surface of the holding portion 11.

  As shown in FIG. 3 (B), a hole 51 is formed at the lower end of the light shielding plate 5, and a bent portion 52 is formed from the portion facing the hole 51 at the lower end 5A with the fold line 54 as a base. It extends downward. A cut 53 extending from the open end to the middle portion is formed in the bent portion 52.

  The width WA1 of the claw 13 is substantially equal to the width WA2 of the notch 53. The distance D1 between the rib 12 and the inner surface of the holding portion 11 is larger than the thickness of the light shielding plate 5 and is substantially equal to the distance D2 between the base portion side end of the cut 53 and the folding line 54. The width WB1 of the claw 13 is substantially equal to the width WB2 of the hole 51. A distance H1 from the lower surface of the claw 13 to the upper surface 1A of the support member 1 is substantially equal to a distance H2 from the lower edge of the hole 51 to the lower end 5A.

  As shown in FIGS. 4 (A) and 4 (B), when the lower end portion of the light shielding plate 5 is inserted from above the support member 1 along the insertion direction F between the rib 12 and the claw portion 13 in the vertical direction, The bent portion 52 is bent toward the rib 12 with the fold line 54 as a support shaft, and a part of the rib 12 is inserted into the cut 53. At this time, the lower end of the bent portion 52 comes into contact with the claw 13, but the portion of the claw 13 with which the lower end of the bent portion 52 comes into contact is configured with an inclined surface that gradually approaches the rib 12 as it goes downward. The lower end of the bent portion 52 is guided between the rib 12 and the claw 13 along the inclined surface.

  Both side surfaces of the portion of the rib 12 fitted into the notch 53 are in close contact with the inner surface of the notch 53. Further, the surface of the rib 12 on the side of the holding portion 11 of the portion fitted into the notch 53 abuts on the inner surface of the notch 53 on the folding line 54 side, and the outer surface of the lower end portion of the light shielding plate 5 is the holding portion. 11 is in close contact with the inner surface. Further, the claw 13 is fitted into the hole 51 of the light shielding plate 5, and the bottom surface of the claw 13 comes into contact with the lower edge of the hole 51.

  As shown in FIG. 4C, a hole 51, a bent portion 52, and a folding line 54 are formed at the same position in the light shielding plate 5 with respect to the thickness direction of the light shielding plate 5 and the direction orthogonal to the insertion direction F. The rib 12 and the claw 13 are formed at the same position in the support member 1.

  The movement of the light shielding plate 5 in the direction of the arrow X is restricted by the close contact between both side surfaces of the rib 12 fitted into the cut 53 and the inner surface of the cut 53. Further, the movement of the light shielding plate 5 in the arrow Y direction is restricted by the contact between the surface of the rib 12 fitted in the cut 53 on the holding portion 11 side and the inner surface of the cut 53 on the folding line 54 side. Furthermore, the movement of the light shielding plate 5 in the arrow Z direction is restricted by the contact between the bottom surface of the claw 13 fitted in the hole 51 and the lower edge of the hole 51.

  As described above, only by inserting the lower end portion of the light shielding plate 5 between the rib 12 and the claw portion 13 from above the support member 1, the light shielding plate 5 can be used without using other parts such as fixing screws and double-sided tape. Can be securely fixed to the support member 1 at a predetermined position.

  As shown in FIG. 2, in the plan view, the light shielding plate 5 is fixed by the ribs 12 and the claws 13 at both lateral ends in a curved state. Due to the restoring force of the light-shielding plate 5 having flexibility, both end portions of the light-shielding plate 5 are urged in a direction in contact with the inner surface of the holding portion 11, and the fixing state of the light-shielding plate 5 by the ribs 12 and the claws 13 is ensured. Maintained.

  3A and 3B, when the distance D1 is made slightly smaller than the distance D2, and the distance H1 is made slightly longer than the distance H2 in accordance with this, the flexibility is improved as shown in FIG. The bent part 52 formed in a part of the light-shielding plate 5 is inclined when viewed from the side. The bent portion 52 urges the light shielding plate 5 in the arrow PH direction and the arrow PV direction by a restoring force. Thereby, the movement of the light shielding plate 5 in the arrow Y direction and the arrow Z direction can be more reliably regulated.

  In the above-described embodiment, the rib 12 and the claw 13 are disposed at positions facing each other in the direction orthogonal to the thickness direction and the insertion direction (the arrow F direction in FIG. 4) of the light shielding plate 5. And the claw 13 may be arranged at different positions, and the bent portion 52 may be formed at a position facing the rib 12 in the light shielding plate 5 and the hole 51 may be formed at a position facing the claw 13.

  Further, the folding line 54 may be omitted on the condition that the bent portion 52 is bent toward the rib 12 at the lower end position of the light shielding plate 5.

  Furthermore, at least one set of the ribs 12, the claws 13, the holes 51, and the bent portions 52 constituting the light shielding plate mounting structure of the present invention may be provided, and workability when the light shielding plate 5 is fixed to the support member 1. , And a fixed state, it can be formed in any number of sets.

1-support member 2-cover 3-light source 5-light shielding plate 11-holding portion 12-rib 13-claw 51-hole portion 52-bent portion 53-cut

Claims (3)

A light shielding plate mounting structure for fixing a flat light shielding plate upright on a support member,
A hole formed through a part of the light shielding plate in the thickness direction;
A bent portion having a notch extending from the free end to the middle portion, formed extending downward from the lower end of the light shielding plate, and
A holding portion that is erected from the support member and has a claw that fits into the hole portion and contacts at least the lower edge of the hole portion, with the bent portion bent;
A gap between the holding portion and the holding portion in the thickness direction of the light shielding plate is larger than the thickness of the light shielding plate and less than a distance between the notch and the base portion in the bent portion, and is disposed on the support member. A rib that fits in,
A light-shielding plate mounting structure, wherein the light-shielding plate is inserted between the holding portion and the rib along a predetermined insertion direction.   The positions of the hole and the bent portion are made to coincide with each other and the positions of the rib and the holding portion are made to coincide with each other in the thickness direction of the light shielding plate and the direction orthogonal to the insertion direction. The light-shielding plate mounting structure described in 1. A support member that forms the bottom surface of the housing that houses the light source therein;
A light-shielding plate that is erected and attached to a part of the support member;
An illuminating device comprising: the light-shielding plate mounting structure according to claim 1.

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