JP5458339B2 - Passenger car lamp unit - Google Patents

Description

  The present invention relates to a lamp unit for a passenger car including a plurality of light sources having different uses.

A related lamp unit for a passenger car is described in Patent Document 1.
The lamp unit 100 includes a headlamp 102 and a fog lamp 104 as shown in the plan sectional view of FIG. Further, portions other than the headlamp 102 and the fog lamp 104 are covered with a plate-shaped design component 105 for improving appearance. Further, the head lamp 102, the fog lamp 104 and the design part 105 are accommodated in a lamp housing 106 whose front part is open, and the open part of the lamp housing 106 is closed by a lamp lens 107.
Further, on the back side of the design part 105, a partition part 105 w that partitions the space in the lamp housing 106 and restricts the convection range of air in the space is provided integrally with the design part 105. As a result, the air warmed by the headlamp 102 does not flow into the fog lamp 104 side, and fogging is unlikely to occur in the lamp lens 107 on the fog lamp 104 side.

Japanese Patent Laid-Open No. 9-22604

However, since the partition unit 105w is provided integrally with the design component 105 in the lamp unit 100 described above, the design freedom of the design component 105 is reduced. For example, even if it is desired to form a cut at a predetermined position of the design part 105, the cut cannot be formed when the partition portion 105w is required at that position.
In addition, since the design part 105 is generally a resin injection-molded product, it is necessary to consider die cutting when forming the partition part 105w. For this reason, the inclination angle of the partition part 105w with respect to the design component 105 is also limited. That is, if the design of the design part 105 is prioritized, the partition part 105w may be displaced from an appropriate position, and the air convection range may not be efficiently limited. On the contrary, if the partition part 105w is arranged at an appropriate position, the design of the design part 105 may be deteriorated.

  The present invention has been made to solve the above-described problems, and the problem to be solved by the present invention is to enable the partition member to be disposed at an appropriate position, and for the partition member to be a design part of the lamp unit. The design should not be affected.

The above-described problems are solved by the inventions of the claims.
The invention of claim 1 includes a plurality of light sources having different uses, a plate-shaped design part that covers a portion other than the light source, a front-opening type lamp housing that houses the light source and the design part, and an opening of the lamp housing A lamp unit for a passenger car including a lamp lens that closes a portion, and a partition member that partitions a space in the lamp housing on a back side of the design component and restricts a convection range of air in the space, and The partition member is a separate component from the design component, and includes a design component side contour along the back surface of the design component, and a housing side contour along the inner wall surface of the lamp housing, and the partition member includes the a design component side contour groove formed along, and a stepped portion is provided extending to the housing-side edge and intersecting the groove portion, the partition member before Characterized in that it is a structure attached to the inner wall surface of the lamp housing.

According to the present invention, the partition member is configured to be attached to the inner wall surface of the lamp housing as a separate part from the design part. For this reason, it is not necessary to change the shape of a part of the design part according to the arrangement of the partition member, the inclination angle of the partition member with respect to the design part, or the like. Therefore, even if the partition member is disposed at an appropriate position, the partition member does not affect the design of the design part.
Further, since the partition member is provided with a groove portion formed along the design component side contour and a step portion that intersects the groove portion and extends to the housing side contour, the partition member is formed of a thin plate. However, a predetermined strength can be ensured.

According to the invention of claim 2, the surface of the lamp lens is provided with a strip-shaped design line, the design part is provided with a cut at a position hidden in the design line, the partition member, It arrange | positions at the part of the cut | interruption of the said design components, It is characterized by the above-mentioned.
Thus, since a partition member can be arrange | positioned in the position of the cut | interruption of a design component, the freedom degree of design of a design component improves.

According to the invention of claim 3, the partition member is made of a material different from that of the design part and the lamp housing.
For example, if the partition member is formed of an iron plate or the like for a resin design part or lamp housing, the partition member can be formed thin with the same strength, and the degree of freedom in mounting is improved.

According to the invention of claim 4, the light source having a long lighting time is disposed on the lower side, the light source having a short lighting time is disposed on the upper side, and the partition member is configured to partition the space in the lamp housing vertically. It is characterized by being.
For this reason, the air heated by the lower light source is blocked by the partition member and does not flow upward. For this reason, the warm air is cooled upward, and fogging does not occur inside the lamp lens.

  According to the invention of claim 5, the lamp lens is provided with a protrusion that protrudes to the inside of the lamp housing, and the space on the front side of the design part is partitioned by the protrusion to limit the air convection range. It is characterized by being.

  According to the present invention, the partition member can be disposed at an appropriate position. Further, the partition member does not affect the design of the design part of the lamp unit.

It is a whole perspective view of the front lamp unit (right side) of a passenger car concerning Embodiment 1 of the present invention. FIG. 4 is a perspective view (A diagram) showing the inside of the front lamp unit (back side of the extension), and a perspective view (B diagram) showing a partition member of the lamp unit. FIG. 3 is a longitudinal sectional view (IIIA-IIIA arrow sectional view of FIG. 1) (A diagram) of the lamp unit, and an enlarged view (B diagram) of FIG. It is a plane sectional view showing the lamp unit of the conventional passenger car.

[Embodiment 1]
Hereinafter, the passenger car lamp unit according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 3. In the present embodiment, the present invention is applied to a headlamp unit of a passenger car, and front and rear, right and left, and top and bottom in the figure correspond to front and rear, right and left and top and bottom of a passenger car.

<About the outline of the headlamp unit 10>
The headlamp unit 10 is symmetrical and has the same structure, and is attached to the front surface of the passenger car. Hereinafter, the right headlamp unit 10 will be described as a representative.
As shown in FIGS. 1 and 2, the headlamp unit 10 is provided with a high beam lamp 12 and a direction indicator lamp 15 on the upper side, and a low beam lamp 14 and a vehicle width lamp 17 on the lower side. Has been placed. In other words, lamps whose lighting time is generally long are arranged on the lower side, and lamps whose lighting time is relatively short are arranged on the upper side.
As shown in the longitudinal sectional view of FIG. 3A, the head lamp unit 10 is formed in a sealed container shape by a lamp housing 22 having a front surface opened and a lamp lens 24 covering a front surface opening portion 22h of the lamp housing 22. Is formed. The lamp housing 22 accommodates the plurality of lamps 12, 14, 15, and 17 and an extension 30 that is a plate-shaped design component that covers portions other than the lamps 12, 14, 15, and 17. Yes.
That is, the high beam lamp 12, the direction indicating lamp 15, the low beam lamp 14, and the vehicle width lamp 17 correspond to the light source of the present invention.

<About extension 30>
The extension 30 has a surface plated with silver so that the light from the lamps 12, 14, 15, and 17 can be reflected forward. As shown in FIG. 1, the extension 30 includes a high beam lamp recess 32, a low beam lamp recess 34, a direction indicator lamp recess 35, and a vehicle width lamp recess 37 at predetermined positions. , 35, 37 are formed with openings 32h, 34h, 35h, 37h through which the light sources of the lamps 12, 14, 15, 17 are passed. Further, as shown in FIG. 3A, the extension 30 is provided with a cut 38 at the back side position of the design line 28 of the lamp lens 24.
In FIG. 1, the transparent portion of the lamp lens 24 is omitted, and only the design line 28 is shown.

<About the lamp lens 24>
As shown in FIG. 3A, the lamp lens 24 includes a lens upper portion 24u covering the upper stage side of the lamp housing 22, a lens lower portion 24d covering the lower stage side of the lamp housing 22, a lens upper portion 24u and a lens lower portion 24d. And a groove-shaped portion 24m having a substantially U-shaped cross section extending in the lateral direction (left-right direction) at the boundary position. A cut 38 of the extension 30 is disposed at the inner upper surface position U of the groove-shaped portion 24m of the lamp lens 24, and the extension 30 positioned below the cut 38 at the inner vertical surface position S of the groove-shaped portion 24m. It is joined. As a result, the space formed by the lamp lens 24 and the like on the front side of the extension 30 is partitioned vertically by the groove-shaped portion 24 m of the lamp lens 24.
Further, an opaque belt-shaped design line 28 is fitted on the surface of the lamp lens 24 so as to close the opening of the groove-like portion 24m of the lamp lens 24. As a result, the groove portion 24m of the lamp lens 24 and the cut 38 of the extension 30 are hidden behind the design line 28 and cannot be seen from the outside, as shown in FIG.

<About the partition member 40>
The inner space of the lamp housing 22 is partitioned up and down by a partition member 40 on the back side of the extension 30 as shown in FIG. The partition member 40 prevents air heated by the low beam lamp 14 and the vehicle width lamp 17 from entering the upper space of the lamp housing 22, that is, the storage space of the high beam lamp 12 and the direction indicating lamp 15 by convection. It is a plate-shaped member for doing. As shown in FIGS. 2A and 2B, the partition member 40 is formed by a thin iron plate so as to cross the internal space of the lamp housing 22 and to partition the internal space vertically. That is, the partition member 40 is formed in a substantially triangular shape by a housing side contour 43 along the inner wall surface of the lamp housing 22 and an extension side contour 45 along the back surface of the extension 30. And the housing side outline 43 of the partition member 40 and the some stay 46 by which the screw hole was formed in the vicinity are formed at substantially equal intervals. In addition, a shallow groove 45m is formed in the partition member 40 along the extension-side contour 45, and a step portion 43d is formed from the top portion of the housing-side contour 43 so as to intersect with the groove 45m. Thereby, even if the partition member 40 is formed of a thin iron plate, a predetermined strength can be ensured and it is difficult to deform.
As shown in FIG. 3B, the partition member 40 is fixed to the lamp housing 22 by screwing each stay 46 to a receiving portion 22 u formed on the inner wall surface of the lamp housing 22. In addition, the code | symbol 14x in FIG.3 (B) represents the support material for the lamp | ramp 14 for low beams. Further, in a state where the partition member 40 is fixed to the lamp housing 22, a slight gap is formed between the extension side contour 45 of the partition member 40 and the extension 30. In addition, the dimension of the said clearance gap is set to the dimension (2 mm-5 mm or less) which the air which convects below does not enter into an upper side.

<About air convection>
Next, air convection in the headlamp unit 10 will be described.
In the headlamp unit 10, a lamp whose lighting time is generally long is arranged on the lower side, and a lamp whose lighting time is relatively short is arranged on the upper side. For this reason, the amount of heat released from the lamp is relatively low on the upper side of the headlamp unit 10, and the amount of heat released from the lamp is relatively high on the lower side.
For example, when the low beam lamp 14 and the vehicle width lamp 17 are turned on, the air heated by the low beam lamp 14 and the like is convected between the front side and the back side of the extension 30 as shown by arrows in FIG. become. That is, on the front side of the extension 30, air convects below the groove-like portion 24 m of the lamp lens 24. In addition, on the back side of the extension 30, air convects below the partition member 40. Therefore, the air heated by the low beam lamp 14 or the like does not enter the space on the upper side of the headlamp unit 10 held at a relatively low temperature. For this reason, generation | occurrence | production of the cloudiness which arises by warm air being cooled by the upper stage side of the headlamp unit 10 can be prevented.

<Advantages of the headlamp unit 10 according to this embodiment>
According to the headlamp unit 10 according to the present embodiment, the partition member 40 is configured to be attached to the inner wall surface of the lamp housing 22 as a separate component from the extension 30 (design component). For this reason, it is not necessary to change the shape of a part of the extension 30 depending on the arrangement of the partition member 40, the inclination angle of the partition member 40 with respect to the extension 30, and the like. Therefore, even if the partition member 40 is disposed at an appropriate position, the partition member 40 does not affect the design of the extension 30.
A band-shaped design line 28 is provided on the surface of the lamp lens 24, and a cut 38 is provided in the extension 30 at a position hidden by the design line 28. The partition member 40 is disposed at the cut line 38 of the extension 30. Thus, since the partition member 40 can be arranged at the position of the cut 38 of the extension 30, the degree of freedom in designing the extension 30 is improved.
Moreover, since the partition member 40 is formed of a thin steel plate, the degree of freedom of attachment is improved.

<Example of change>
In addition, this invention is not limited to the said embodiment, The change in the range which does not deviate from the summary of this invention is possible. For example, in the present embodiment, the headlamp unit 10 having a configuration in which the space in the lamp housing 22 is vertically divided by the partition member 40 is illustrated. However, for example, when the high beam lamp 12 and the low beam lamp 14 are arranged side by side, the space in the lamp housing 22 can be divided by the partition member 40 to the left and right. In accordance with this, it is also possible to form the design line 28 in a strip shape extending vertically.
Furthermore, although the groove lens 24m is formed in the lamp lens 24 and the design line 28 is fitted so as to close the opening of the groove 24m, the groove 24m may be omitted. .
Moreover, although the example in which the partition member 40 is screwed to the inner wall surface of the lamp housing 22 has been shown, it can also be fixed with a clip or the like. Further, the partition member 40 may be made of resin and adhered to the lamp housing 22 or may be integrally formed with the lamp housing 22.

10 .... Headlamp unit 12 .... High beam lamp (light source)
14. Low beam lamp (light source)
15 .. Direction indicator lamp (light source)
17. Car width lamp (light source)
22 .... Lamp housing 24 ...... Lamp lens 24m ... Groove (projection)
28 ... Design line 30 ... Extension (design parts)
38 ... Cut 40 ... Partition member

Claims (5)

A plurality of light sources having different uses, a plate-shaped design part that covers a portion other than the light source, a front-opening type lamp housing that houses the light source and the design part, and a lamp lens that closes the opening of the lamp housing A passenger car lamp unit comprising:
A partition member that partitions the space in the lamp housing on the back side of the design component and restricts the convection range of air in the space;
The partition member is a separate component from the design component, and includes a design component side contour along the back surface of the design component, and a housing side contour along the inner wall surface of the lamp housing, and the partition member Is provided with a groove formed along the design component side contour, and a step portion that intersects the groove and extends to the housing side contour, and the partition member is attached to the inner wall surface of the lamp housing. A lamp unit for a passenger car characterized by having a configuration. A passenger car lamp unit according to claim 1,
On the surface of the lamp lens, a belt-shaped design line is provided,
The design part is provided with a cut at a position hidden in the design line,
The lamp unit for a passenger car, wherein the partition member is disposed at a cut portion of the design part. A passenger car lamp unit according to claim 1 or 2,
A lamp unit for a passenger car, wherein the partition member is made of a material different from that of the design component and the lamp housing. A passenger car lamp unit according to any one of claims 1 to 3,
A light source having a long lighting time is disposed on the lower side, a light source having a short lighting time is disposed on the upper side, and the partition member is configured to partition the space in the lamp housing vertically. Passenger car lamp unit. A passenger car lamp unit according to any one of claims 1 to 4,
The lamp lens is provided with a protrusion that protrudes inward of the lamp housing, and a space on the front side of the design part is partitioned by the protrusion to limit the convection range of air. A passenger car lamp unit.

Images