JP5506445B2 - Vehicle lighting - Google Patents

Description

  The present invention relates to a vehicular lamp in which a burner in which a light source and a lighting device for driving the light source are integrated is detachably fitted and held in a holder formed integrally with a reflector.

  Some vehicle lamps such as headlamps use a discharge lamp such as a metal halide lamp (HID lamp) that is bright and has a long life as a light source. In order to light this discharge lamp, A lighting device (voltage suppression circuit or ballast) for applying a voltage is required.

  As such a vehicular lamp, there is one in which a discharge lamp is engaged with a socket provided in a reflector or the like by a fixing means such as a spring or a bayonet, and then a lighting device having a connection terminal is attached to a cap portion of the discharge lamp. For example, it is proposed in Patent Document 1.

  However, in the vehicular lamp having the above configuration, since the weight of the discharge lamp and the lighting device is added to the socket, the discharge lamp vibrates due to impact or vibration during vehicle travel, and flickering occurs in the light distribution characteristics. There is a possibility that problems such as a deviation in the optical axis may occur.

  Therefore, in Patent Document 2, a holder (light source mounting portion) formed on the reflector is provided with a seat portion corresponding to the discharge lamp and a power engaging portion (bayonet receiving portion and bayonet spring) corresponding to the lighting device. There has been proposed a vehicular lamp that employs a configuration in which a discharge lamp mounted on a lamp is sandwiched between a reflector and a lighting device. According to such a vehicular lamp, since the lighting device is supported by the reflector without passing through the discharge lamp, it is possible to eliminate the problem that the discharge lamp resonates when the vehicle travels due to the weight of the lighting device.

JP-A-8-315624 JP 2000-156104 A

  However, in the vehicular lamp proposed in Patent Document 2, since the discharge lamp and the lighting device are configured independently of each other and both are individually attached to the holder of the reflector, the discharge lamp cannot be easily replaced. There is a problem that the replacement work requires a lot of labor and time.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a vehicular lamp capable of easily exchanging light sources with one touch.

In order to achieve the above object, a first aspect of the present invention provides a vehicle in which a burner formed by integrating a light source and a lighting device for driving the light source is detachably fitted and held in a holder formed integrally with a reflector. In the lamp,
The burner is inserted and fitted into the holder, a part of the burner is pressed against a seating surface formed on the holder, a pair of burner holders are slidably fitted to the outer surface of the holder, and the two are combined and integrated. A part of the burner is sandwiched between a burner holder and a seating surface of the holder, and the burner is fixed to the holder .
The pair of left and right burner holders are combined and integrated by engaging engagement claws and engagement holes formed at positions facing each other .

  According to a second aspect of the present invention, in the first aspect of the invention, a discharge lamp is used as the light source, and a flange formed on an outer periphery of a base of the discharge lamp is pressed against a seating surface of the holder, and the flange Is sandwiched between the burner holder and a seating surface of the holder.

According to the first aspect of the present invention, in a state where the burner is inserted and fitted into the holder and a part thereof is pressed against the seat surface formed on the holder, the pair of burner holders are fitted into the outer surface of the holder. The burner can be easily attached to the holder simply by combining and integrating. In particular, a pair of left and right burner holders can be easily coupled and integrated with one touch by engagement of engagement claws and engagement holes formed at opposite positions. Can be attached. Moreover, if the burner attached to the holder releases the engagement between the paired burner holders, the burner can be easily detached from the holder with one touch by separating them. Since the burner can be easily attached to and detached from the holder in this way, the light source can be easily replaced with a single touch.

  In addition, since the lighting device integrated with the light source is directly attached to the holder without passing through the light source, vibration of the discharge lamp due to impact or vibration during vehicle running is suppressed, flickering in the light distribution characteristics, There will be no problems such as the optical axis going out of order.

  According to the second aspect of the present invention, in a state where the flange formed on the outer periphery of the base of the discharge lamp is pressed against the seat surface of the holder, the flange is sandwiched between the burner holder and the seat surface of the holder. Can be securely attached to the holder.

It is a disassembled perspective view of the vehicle lamp principal part which concerns on this invention. (A) is a partial plane sectional view which shows the state at the time of the burner opening of the vehicle lamp which concerns on this invention, (b) is the A section enlarged detail drawing of (a). (A) is a partial plane sectional view which shows the state at the time of the burner fixation of the vehicle lamp which concerns on this invention, (b) is the B section enlarged detail drawing of (a).

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  FIG. 1 is an exploded perspective view of a main part of a vehicular lamp according to the present invention, FIG. 2 (a) is a partial plan sectional view showing a state when the burner of the vehicular lamp is opened, and FIG. 2 (b) is FIG. 3A is an enlarged detail view of a portion A, FIG. 3A is a partial plan sectional view showing a state of the vehicle lamp when the burner is fixed, and FIG. 3B is an enlarged detail view of a portion B of FIG. .

  A vehicular lamp 1 according to the present embodiment is a headlamp provided on the left and right of a front portion of a vehicle (not shown), and is defined by covering a housing (not shown) and its front opening with a lens (not shown). A lamp chamber (not shown) includes a reflector 2, a discharge tube (HID lamp) 3 as a light source, and a lighting device 4 for lighting the discharge tube. Since the basic configuration of the vehicular lamp 1 that is a headlamp is the same for the left and right, only one of the vehicular lamps 1 will be illustrated and described below.

  By the way, in the vehicular lamp 1 according to the present embodiment, the discharge lamp 3 and the rectangular block lighting device 4 for lighting the discharge lamp 3 are integrated as a burner 5. Here, as shown in FIG. 2 and FIG. 3, the discharge lamp 3 is composed of an elongated circular discharge tube 3A and a cylindrical cap 3B attached to the end thereof, and on the outer periphery of the cap 3B. Is formed with a ring-shaped flange 3a.

  The reflector 2 is a parabolic component that opens toward the front of the vehicle (to the right in FIGS. 2 and 3), and its inner surface forms a spheroid reflecting surface. A rectangular box-shaped holder 6 that opens toward the rear of the vehicle is integrally formed at the center of the back surface of the reflector 2.

  A circular hole 7 for passing the discharge lamp 3 of the burner 5 is formed in the center of the rectangular seating surface 6A of the holder 6, and bosses 8 are formed above and below the circular hole 7 of the seating surface 6A. Has been. Each boss 8 is formed with a screw hole 8a. Further, a long notch 9 is formed on the upper and lower surfaces of the holder 6 in the longitudinal direction of the vehicle, and cylindrical pins 10 are provided on the left and right sides of the notch 9 on the upper and lower surfaces (the lower pin 10 is not shown). Are projected.

  Thus, the burner 5 is fitted and fixed to the holder 6 in the manner described later, but a substantially rectangular earth plate 11 is provided between the burner 5 and the holder 6. The earth plate 11 is a part for grounding from the reflector 2 to the burner 5 and is constituted by a substantially rectangular metal plate, and a circular hole 12 through which the discharge lamp 3 of the burner 5 passes is provided at the center. Is formed. The inner diameter of the circular hole 12 formed in the earth plate 11 is set larger than the inner diameter of the circular hole 7 formed in the holder 6 and the outer diameter of the flange 3a formed in the base 3B of the discharge lamp 3. .

  In addition, brackets 13 are provided on the top and bottom of the ground plate 11 so as to match the bosses 8 provided on the top and bottom of the holder 6, and circular holes 13 a are formed in these brackets 13, respectively. Further, a claw 14 having a spring property for pressing the burner 5 fitted in the holder 6 downward with a predetermined force is formed on the upper peripheral edge of the circular hole 12 of the earth plate 11. From above and below, a hook 15 extends integrally toward the rear of the vehicle.

  By the way, a pair of left and right burner holders 16 are used to fix the burner 5 to the holder 6, and these burner holders 16 have a rectangular box divided into left and right parts, and both have the same shape. Formed and used upside down (rotated 180 °).

  A semicircular fitting hole 17 (only one is shown in FIG. 1) is formed in the end wall of each of the left and right burner holders 16, and a long hole 18 is formed on the upper and lower surfaces. ing. Further, the engaging claws 19 and the engaging holes 20 are formed alternately on the upper and lower surfaces of these burner holders 16 (that is, one engaging claw 19 engages with the other engaging hole 20). Has been. Specifically, the engagement hole 20 is formed on the upper surface of the left burner holder 16, the engagement claw 19 is formed on the lower surface, the engagement claw 19 is formed on the upper surface of the right burner holder 16, and the engagement hole 20 is formed on the lower surface. Has been. The inner diameter (the inner diameter of the envelope circle) of the fitting hole 17 formed in each burner holder 16 is set to be smaller than the outer diameter of the flange 3a formed on the base 3B of the discharge lamp 3.

  Thus, the left and right burner holders 16 are fitted on the outer surfaces of the holders 6 so as to cover the holders 6 from the left and right, and the upper and lower surfaces of the holders 6 are inserted into the long holes 18 formed on the upper and lower surfaces of each burner holder 16. The pin 10 projecting from is engaged. Accordingly, each burner holder 16 slides in the left-right direction (in the directions of arrows a and b in FIGS. 1 and 2) along the upper and lower surfaces of the holder 6 within a range in which the pin 10 can slide relative to the long hole 18. can do.

  Next, a procedure for attaching the burner 5 to the holder 6 in the vehicular lamp 1 according to the present embodiment will be described.

  In order to attach the burner 5 formed by integrating the discharge lamp 3 and the lighting device 4 to the holder 6 of the reflector 2, first, the earth plate 11 is fitted into the holder 6, and a total of four hooks 15 formed on the left and right of the earth plate 11 are attached to the holder 6 6, the upper and lower brackets 13 are aligned with the upper and lower bosses 8 on the holder side, and the screws 21 inserted through the circular holes 13 a of these brackets 13 are screw holes 8 a of the boss 8 on the holder 6 side. The ground plate 11 is attached to the holder 6 by screwing into the holder 6. At this time, the circular hole 12 of the earth plate 11 and the circular hole 7 of the holder 6 are in communication with each other with their centers aligned.

  Next, the burner 5 is inserted into the holder 6 with the discharge lamp 3 first. Then, the discharge lamp 3 penetrates the circular hole 12 of the earth plate 11 and the circular hole 7 of the holder 6 and is inserted into the reflector 2 as shown in FIG. 2, and is formed in the base 3B of the discharge lamp 3. The flange 3 a is pressed against the seat surface 6 A of the holder 6. At this time, the left and right burner holders 16 are not separated from each other as shown in FIG.

  As described above, the burner 5 is inserted into the holder 6, and the left and right burner holders 16 are moved along the upper and lower surfaces of the holder 6 from the state in which the flange 3 a of the base 3 B of the discharge lamp 3 is pressed against the seating surface 6 A of the holder 6. The two burner holders 16 are moved as shown in FIG. 3 by sliding them in directions close to each other (the direction of arrow a in FIGS. 1 and 2) and engaging one engaging claw 19 facing each other in the other engaging hole 20. As shown in FIG. Then, the peripheral edge of the fitting hole 17 in the end wall of the burner holder 16 engages with the groove 22 between the flange 3a formed in the base 3B of the discharge lamp 3 and the lighting device 4, and the flange 3a is seated on the holder 6. It is sandwiched between the surface 6A. That is, the burner 5 is securely fixed to the holder 6 by sandwiching the flange 3a of the base 3B between the seating surface 6A of the holder 6 and the left and right burner holders 16.

  In order to remove the burner 5 attached to the holder 6 from the holder 6 as described above, the coupling between the engagement claws 19 and the engagement holes 20 of the left and right burner holders 16 is released, and both the burner holders 16 are removed. Is slid in the direction away from each other along the upper and lower surfaces of the holder 6 (the direction of the arrow b in FIGS. 1 and 2), the clamping of the flange 3B of the base 3B by the burner holder 16 and the seating surface 6A of the holder 6 is released. Therefore, the burner holder 16 can be pulled out as it is and easily removed from the holder 6. For example, the discharge lamp 3 can be replaced with a new one.

  For example, when the replacement of the discharge lamp 3 is completed, the burner 5 can be easily attached to the holder 6 in the same manner as described above.

  As described above, according to the vehicular lamp 1 according to the present embodiment, the burner 5 is inserted and fitted into the holder 6 and the flange 3a of the base 3B is pressed against the seat surface 6A formed on the holder 6. Thus, the burner 5 can be easily attached to the holder 6 simply by combining and integrating the pair of left and right burner holders 16 slidably fitted on the outer surface of the holder 6. The burner 5 attached to the holder 6 can be easily detached from the holder 6 simply by releasing the coupling of the combined burner holder 16 and separating the two. Thus, since the burner 5 can be easily attached to and detached from the holder 6, the discharge lamp 3 can be easily replaced with one touch.

  Further, since the lighting device 4 integrated with the discharge lamp 3 is directly attached to the holder 6 without going through the discharge lamp 3, vibration of the discharge lamp 3 due to impact or vibration during traveling of the vehicle is suppressed, and light distribution characteristics. There are no problems such as flickering or distorting the optical axis.

  Furthermore, according to the vehicular lamp 1 according to the present embodiment, the pair of left and right burner holders 16 can be easily operated with one touch by engaging the engagement claws 19 and the engagement holes 20 formed at positions facing each other. The pair of burner holders 16 that are combined into a pair can be disengaged from each other and can be separated easily.

  In the above, the embodiment in which the present invention is applied to the headlamp has been described. However, the present invention is naturally applicable to any other vehicular lamp other than the headlamp.

DESCRIPTION OF SYMBOLS 1 Vehicle lamp 2 Reflector 3 Discharge lamp (light source)
3A discharge tube 3B cap 3a flange 4 lighting device 5 burner 6 holder 6A holder seat 7 holder circular hole 8 holder boss 8a boss screw hole 9 notch 10 pin 11 ground plate 12 ground plate circular hole 13 Earth plate bracket 13a Bracket circular hole 14 Claw 15 Hook 16 Burner holder 17 Burner holder fitting hole 18 Burner holder long hole 19 Burner holder engagement claw 20 Burner holder engagement hole 21 Screw 22 Groove

Claims (2)

In a vehicular lamp formed by detachably fitting and holding a burner formed by integrating a light source and a lighting device for driving the light source into a holder formed integrally with a reflector,
The burner is inserted and fitted into the holder, a part of the burner is pressed against a seating surface formed on the holder, a pair of burner holders are slidably fitted to the outer surface of the holder, and the two are combined and integrated. A part of the burner is sandwiched between a burner holder and a seating surface of the holder, and the burner is fixed to the holder .
A vehicular lamp characterized in that the pair of left and right burner holders are coupled and integrated by engagement of engagement claws and engagement holes formed at positions facing each other . A discharge lamp is used as the light source, and a flange formed on the outer periphery of the base of the discharge lamp is pressed against the seat surface of the holder, and the flange is sandwiched between the burner holder and the seat surface of the holder. The vehicular lamp according to claim 1, wherein the vehicular lamp is formed.

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