JP2013124005A - Vehicle lamp - Google Patents

Abstract

A vehicular lamp capable of ensuring a wide irradiation range as much as possible is provided.
A vehicular lamp 2 according to the present invention includes a housing member 3 fixed in a vehicle interior, and an irradiation member 5 housed in the housing member 3 and capable of changing an irradiation direction by changing an inclination with respect to the housing member 3. And have. The housing member 3 has a base member 6 that supports the irradiation member 5 in a tiltable manner. The irradiation member 5 includes a cover portion 10 material, a light source portion 13 fixed to the cover member 10 from the inside, and a lens member 11 fixed to the cover member 10 from the outside. The lens member 11 is integrated with the cover member 10 and supported so as to be tiltable while being in sliding contact with the base member 6.
[Selection] Figure 1

Description

  The present invention relates to an improvement of a vehicular lamp.

  2. Description of the Related Art Conventionally, a vehicular lamp includes a housing member that is fixed in a vehicle interior, and an irradiation unit that is housed in the housing member and can change an irradiation direction by changing an inclination with respect to the housing member. (For example, refer to Patent Document 1).

Japanese Patent Laying-Open No. 2009-83792 (see FIG. 7 etc.)

  By the way, when the vehicular lamp is used for reading, it is desirable that the illumination range be as wide as possible. Moreover, when changing the inclination of an irradiation part, it is desirable to make it easy to operate an irradiation part with respect to a housing member. Furthermore, when the vehicular lamp is mounted in the vehicle interior, it is desirable to have a structure that can ensure a large tilt angle of the irradiating portion without protruding the vehicular lamp into the vehicle interior as much as possible.

  The present invention has been made in view of the above circumstances, and an object thereof is to provide a vehicular lamp that can ensure an irradiation range as wide as possible.

  A vehicular lamp according to the present invention includes a housing member that is fixed in a vehicle interior, and an irradiation member that is housed in the housing member and that can change an irradiation direction by changing an inclination with respect to the housing member. The housing member has a base member that supports the irradiation member in a tiltable manner. The irradiation member includes a cover member, a light source unit fixed to the cover member from the inside, a lens member fixed to the cover member from the outside and integrated with the cover member and supported in a tiltable manner while being in sliding contact with the base member. It has.

  According to the present invention, there is an effect that the irradiation range can be secured as wide as possible.

FIG. 1 is a cross-sectional view showing the configuration of the main part of Embodiment 1 of a vehicular lamp according to the present invention. FIG. 2 is an exploded perspective view showing the configuration of the main part of the first embodiment of the vehicular lamp according to the present invention. FIG. 3 is an enlarged cross-sectional view of the irradiation member shown in FIG. FIG. 4 is an enlarged perspective view of the cover member shown in FIG. FIG. 5 is an enlarged perspective view of the lens member shown in FIG. 6 is a perspective view showing a state where the cover member shown in FIG. 4 is covered with the lens member shown in FIG. 5 and the felt member shown in FIG. 2 is attached. FIG. 7 is a perspective view of the irradiation member to which the felt member is attached. FIG. 8 is a sectional view showing the structure of a conventional irradiation member for comparison with the irradiation member shown in FIG. FIG. 9 is a perspective view of the cover member shown in FIG. FIG. 10 is an exploded perspective view showing the main configuration of a second embodiment of the vehicular lamp according to the present invention. FIG. 11 is a perspective view showing a state in which the structure of the base member shown in FIG. 10 is viewed from the back side. FIG. 12 is a perspective view showing the structure of the cover member shown in FIG. 13 is a perspective view showing a state where the cover member shown in FIG. 10 is covered with the lens member shown in FIG. FIG. 14 is a cross-sectional view showing the structure of a conventional vehicle lamp for comparison with the vehicle lamp shown in FIG. FIG. 15 is a cross-sectional view showing the main configuration of a second embodiment of the vehicular lamp according to the present invention.

Example 1
FIG. 1 is a cross-sectional view showing the configuration of the main part of a first embodiment of a vehicular lamp according to the present invention. In FIG. 1, 1 is a decorative interior material for a ceiling in a vehicle interior, and 2 is a vehicular lamp.

  As shown in FIG. 2, the vehicular lamp 2 includes a housing member 3 and a decorative cover member 4. The housing member 3 includes a back wall 3a, upright walls 3b, 3c, 3c, and 3d and inclined walls 3e and 3e '.

As shown in FIGS. 1 and 2, the housing member 3 is formed with a lighting switch circuit board placement chamber 3f by its back wall 3a, upright walls 3b and 3d, and a pair of upright walls 3c and 3c. Yes. The back wall 3a is provided with a harness insertion hole 3a ′. A circular opening 3g is formed in the inclined wall 3e.
A switch circuit board (not shown) is arranged in the lighting switch circuit board arrangement chamber 3f.

  Engaging claws 3c 'and 3c' are formed on the pair of upright walls 3c and 3c. A boss portion 3h is formed on the back side of the inclined wall 3e 'as shown in FIG. The boss 3h is provided with a screw hole 3h '. The boss portions 3h are provided in a number corresponding to the number of base plate mounting plate portions to be described later.

  The decorative cover member 4 includes a decorative plate portion 4a and a leg plate portion 4b. The leg plate portion 4b is formed with engagement holes 4b 'and 4b' into which the engagement claws 3c 'and 3c' are fitted. The decorative cover member 4 is fixed to the housing member 3 by fitting engagement holes 4b 'and 4b' to the engagement claws 3c 'and 3c'.

  The decorative plate portion 4a is provided with a projecting hole 4b ″ for projecting a slide switch member (not shown) provided on the switch circuit board at a location corresponding to the lighting switch circuit board placement chamber 3f. An inclined wall 4c is provided, and a circular opening 4c ′ is formed in the inclined wall 4c at a location corresponding to the circular opening 3g.

  On the back side of the decorative cover member 4, flexible engaging claws 4d and 4d are formed. The vehicular lamp 2 is fixed to the vehicle interior ceiling by bending the flexible joint claws 4d and 4d and engaging the engaging claws 4d 'and 4d' with the decorative interior material 1.

An irradiation member 5 is provided in the circular opening 3 g of the housing member 3. The housing member 3 has a base member 6 that supports the irradiation member 5 in a tiltable manner.
As shown in FIG. 2, the irradiation member 5 is generally composed of a set screw 7, a light emitting circuit board 8, an inner lens 9, a cover member 10, a lens member 11, and a pair of felt members 12.

  The base member 6 includes a concave curved portion 6a and a mounting plate portion 6b. A screw hole 6c is formed in the attachment plate portion 6b. An unillustrated set screw is inserted into the screw hole 6c, and the base member 6 is fixed to the boss 3h of the housing member 3 by the unillustrated set screw. The concave curved portion 6a plays a role of supporting the irradiation member 5 in a tiltable manner.

  The inner lens 9 has a flat lens portion 9a shown enlarged in FIG. 3 and a pair of attachment portions 9b shown in FIG. Screw holes 9c are formed in the pair of attachment portions 9b. The light emitting circuit board 8 is provided with a chip type light emitting diode 8a shown in an enlarged manner in FIG.

  As shown in FIG. 2, the light emitting circuit board 8 has screw holes 8b corresponding to the screw holes 9c. The inner lens 9 is fixed to the light emitting circuit board 8 by a set screw 7. The light emitting circuit board 8, the inner lens 9, and the set screw 7 constitute a light source unit 13 shown in FIG.

  As shown in FIG. 4, the cover member 10 includes a fitting curved surface 10 b into which the lens member 11 is fitted from the outside, and a projection of the lens member 11 that is raised from the fitting curved surface 10 b and extends in the circumferential direction. Is formed. The posture restricting portion 10c has a stepped shape at both ends in the circumferential direction.

  The cover member 10 is formed with a tapered irradiation range regulating wall 10d that regulates the irradiation range W (see FIG. 3) of the illumination light P from the light source unit 13. For example, the light source unit 13 is fixed to the cover member 10 from the inside by an adhering means such as an adhesive to the irradiation range regulating wall 10d. In FIG. 4, 10 d ′ indicates a circular opening that the light source unit 13 faces.

  Here, the posture restricting portions 10c are paired and formed at symmetrical positions with the optical axis O in between. As shown in an enlarged view in FIG. 5, the lens member 11 has a pair of engagement concave portions 11a having a shape corresponding to the shape of the fitting curved surface 10b and a shape corresponding to the shape of the posture regulating portion 10c. 11b and 11b are formed. The lens member 11 is formed with a parting line PL 'in the circumferential direction along the edge of the engagement recess 11b.

  As shown in FIG. 4, the cover member 10 is formed with a parting line PL extending in a direction orthogonal to the circumferential direction on the fitting curved surface 10 b between the pair of posture regulating portions 10 c and 10 c.

In the cover member 10, the engagement recesses 11b and 11b are engaged with the pair of posture regulating portions 10c, and the fitting curved surface 11a is fitted with the fitting curved surface 10b. The lens member 11 shown in FIG.
At that time, the outer peripheral surface of the pair of posture regulating portions 10c and the outer peripheral surface of the fitting curved surface 11a of the lens member 11 are flush with each other.

  As a result, the parting line PL is concealed by the lens member 11 as shown in FIG. At this time, the lens member 11 is fixed to the cover member 10 by means such as adhesion.

  The pair of felt members 12 is attached to the pair of posture regulating portions 10c and 10c in the region α shown in FIG. 6 by means such as adhesion. This felt member 12 is interposed between the concave curved portion 6a and the posture regulating portion 10c, and plays a role of maintaining the posture of the irradiation member 5.

FIG. 7 shows the lens member 11 integrated with the cover member 10, and the lens member 11 is integrated with the cover member 10 and tilted with respect to the base member 6 while being in sliding contact with the base member 6.
In FIG. 6, the symbol PO is the center of curvature of the concave curved portion 6 a of the base member 6, and the irradiation member 5 is tilted about this center of curvature.

  According to the vehicular lamp 2 of the first embodiment, the housing member 3 fixed in the vehicle interior, and the irradiation member 5 that is housed in the housing member 3 and can change the irradiation direction by changing the inclination with respect to the housing member 3. The housing member 3 includes a base member 6 that supports the irradiation member 5 so as to be tiltable. The irradiation member 5 includes a cover member 10, a light source unit 13 fixed to the cover member 10 from the inside, and a cover member. 10 includes a lens member 11 fixed from the outside and integrated with the cover member 10 so as to be tiltably supported while being in sliding contact with the base member 6, so that the lens member 11 is covered as shown in FIG. Compared to the vehicular lamp 2 having a conventional configuration that is fixed to the member 10 from the inside, the irradiation range W can be secured as wide as possible.

  The base member 6 has a concave curved portion 6a for supporting the cover member 10, and the cover member 10 includes a fitting curved surface 10b into which the lens member 11 is fitted from the outside, and a fitting curved surface 10b. A posture regulating portion 10c that is raised and extends in the circumferential direction to regulate the posture of the lens member 11 is formed. The lens member 11 has a fitting curved surface 11a having a shape corresponding to the fitting curved surface 10b, and a posture regulation. Since the engagement recesses 11b and 11b having a shape corresponding to the shape of the portion 10c are formed, the lens member 11 can be easily assembled to the cover member 10.

  In the cover member 10, a parting line PL extending in a direction orthogonal to the circumferential direction as shown in FIG. 4 is formed on the fitting curved surface 10b between the pair of posture regulating portions 10c. Since it is covered with the fitting curved surface 11a of the lens member 11, it is possible to prevent the parting line PL from being caught by the felt member 12 when the irradiation member 5 is tilted.

  That is, in the vehicular lamp 2 having the conventional structure, the felt member 12 is formed in an annular shape, and the parting line PL of the cover member 10 extends in the circumferential direction as shown in FIG. An annular felt member 12 is interposed between the fitting curved surface 10e and the concave curved portion 6a, and the felt member 12 is in contact with the parting line PL.

  Accordingly, when the irradiation member 5 is tilted with respect to the base member 6, the fitting curved surface 10 e of the cover member 10 is formed to prevent the felt member 12 from being caught by a stepped portion (burr or the like) of the parting line PL. An operation of removing a stepped portion of the parting line PL was performed by buffing and polishing.

  However, according to the first embodiment, since the parting line PL of the cover member 10 is covered with the lens member 11, the parting line PL is caught by the felt member 12 when the irradiation member 5 is tilted. Can be prevented.

(Example 2)
10-15 is explanatory drawing of Example 2 of the vehicle lamp which concerns on this invention, Comprising: The vehicle lamp 2 which concerns on this Example 2 has the structure of the base member 6, the structure of the cover member 10, Since the configuration of the lens member 11 and the configuration of the felt member 12 are mainly different from those of the first embodiment, and other configurations are substantially the same as those of the first embodiment, only portions different from the first embodiment will be described mainly. .

  In Example 2, the concave curved portion 6a of the base member 6 includes a concave small-diameter curved portion 6a ′ having a small curvature radius (large curvature) and a concave small-diameter curved portion having a concave curvature radius, as shown in FIG. It is composed of a concave large-diameter curved portion 6a ″ that is larger (small in curvature) than the curvature radius of 6a ′.

  As shown in FIG. 12, the cover member 10 is formed with a small-diameter curved portion 10 a ′ having a curvature radius corresponding to the concave small-diameter curved portion 6 a ′.

  In the first embodiment, the pair of posture regulating portions 10c of the cover member 10 is formed with the optical axis O as a boundary. However, in this second embodiment, there is only one posture regulating portion 10c, and the small-diameter curved portion 10a ' , The optical axis O is formed at a position symmetrical to the position where the attitude regulating portion 10c is formed.

The small-diameter curved portion 10a ′ is located between the fitting curved surfaces 10b on both sides in the extending direction of the posture regulating portion 10c.
The lens member 11 is covered from the outside so that the engagement recess 11b engages with the posture restricting portion 10c and the fitting curved surface 11a fits the fitting curved surface 10b. At this time, the lens member 11 is fixed to the cover member 10 by means such as adhesion. FIG. 13 shows a state in which the lens member 11 is covered on the cover member 10.

  In the second embodiment, the parting line PL of the cover member 10 is shown as being formed in the circumferential direction in FIG. 12, but the parting line PL is also formed in the circumferential direction. Any of the directions orthogonal to the circumferential direction may be used.

  Further, a parting line PL ′ is also formed on the lens member 11, and it is desirable that the parting line PL ′ is in the circumferential direction in order to form a notch portion 11 b of the lens member 11.

  In the second embodiment, the felt member 12 is annular as shown in FIG. 10, and is formed with a notch 12a. The felt member 12 is attached to the lens member 11 after the lens member 11 is attached to the cover member 10 from the outside, and then the diameter thereof is increased. Thereafter, the felt member 12 is interposed between the base member 6 and the lens member 11.

  According to the second embodiment, the concave curved portion 6a of the base member 6 includes a concave small-diameter curved portion 6a ′ having a small curvature radius and a concave large-diameter curved portion having a curvature radius larger than that of the concave small-diameter curved portion 6a ′. 6a ″, and the cover member 10 is formed with a small-diameter curved portion 10a ′ having a radius of curvature corresponding to the concave small-diameter curved portion 6a ′. The depth dimension of the light source unit 13 can be reduced, and a mounting space for the vehicular lamp 2 can be secured.

  That is, with respect to the depth dimension L from the decorative cover member 4 of the conventional vehicular lamp 2 shown in FIG. 14, according to the second embodiment, the curvature of the base member 6 on the back side of the housing member 3 due to the inclination. Since the radius is reduced, as shown in FIG. 15, the irradiation member 5 can be rotated by a small radius to tilt the irradiation member 5, and the depth dimension L ′ of the vehicular lamp 2 can be made as compared with the conventional case. Can be reduced.

3 ... Housing member 5 ... Irradiation member 6 ... Base member 10 ... Cover member 11 ... Lens member

Claims (6)

A housing member fixed in the passenger compartment, and an irradiation member housed in the housing member and capable of changing an irradiation direction by changing an inclination with respect to the housing member;
The housing member has a base member that supports the irradiation member so as to be tiltable. The irradiation member is fixed to the cover member, a light source portion fixed to the cover member from the inside, and fixed to the cover member from the outside. A vehicular lamp, comprising: a lens member integrated with a cover member and supported so as to be tiltable while being in sliding contact with the base member.   The base member has a concave curved portion that supports the irradiation member, and the cover member has a fitting curved surface to which the lens member is fitted from the outside, a raised curve from the fitting curved surface, and a circumference. A posture regulating portion that extends in a direction and regulates the posture of the lens member, and the lens member corresponds to a fitting curved surface having a shape corresponding to the fitting curved surface and a shape of the posture regulating portion. The vehicle-use vehicle according to claim 1, wherein an engagement recess having a shape is formed, and a felt member that maintains a posture of the irradiation member is interposed between the base member and the irradiation member. Light fixture.   The concave curved portion of the base member is composed of a concave small-diameter curved portion having a small curvature radius and a concave large-diameter curved portion having a curvature radius larger than the curvature radius of the concave small-diameter curved portion. The vehicular lamp according to claim 2, wherein a small-diameter curved portion having a radius of curvature corresponding to the concave small-diameter curved portion is formed.   The taper-shaped irradiation range control wall which controls the irradiation range of the illumination light from the said light source part is formed in the said cover member, The Claim 1 thru | or 3 characterized by the above-mentioned. Vehicle lamps.   The base member has a concave curved portion that supports the irradiation member, and the cover member has a fitting curved surface to which the lens member is fitted from the outside, a raised curve from the fitting curved surface, and a circumference. A pair of posture restriction portions that extend in the direction and restrict the posture of the lens member are formed, the pair of posture restriction portions are formed at symmetrical positions with respect to the optical axis of the light source portion, and the lens member includes A fitting curved surface having a shape corresponding to the fitting curved surface and a pair of engagement recesses having a shape corresponding to the shape of the pair of posture regulating portions are formed, and the irradiation member is formed on the pair of posture regulating portions. The vehicle lamp according to claim 1, further comprising a felt member that maintains the attitude of the vehicle.   In the cover member, a parting line extending in a direction perpendicular to the circumferential direction is formed on a fitting curve surface between the pair of posture regulating portions, and the parting line is a fitting curve of the lens member. The vehicular lamp according to claim 5, wherein the vehicular lamp is covered with a surface.