JP5444033B2 - 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, a pair of burner holders are pivotally attached to the holder so as to be openable and closable, the burner is fitted into the holder, a part thereof is pressed against a seating surface formed on the holder, the burner holder is closed and the Covering the holder and the lighting device of the burner fitted to the holder with the burner holder, the burner holders are combined and integrated, and the burner is pushed in by springs provided on the end faces to fix the burner to the holder. It is characterized by that.

  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 And the lighting device is sandwiched between a spring of the burner holder and a seating surface of the holder.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, both burner holders are formed by engaging engagement claws formed on one of the pair of left and right burner holders with engagement holes formed on the other. Are combined and integrated.

  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 of the burner is pressed against the seating surface formed on the holder, the pair of burner holders are closed and the two are combined. The burner can be easily attached to the holder. Also, the burner attached to the holder can be easily removed from the holder simply by opening the combined burner holder. 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 and the lighting device are connected by the spring of the burner holder and the seat surface of the holder. By sandwiching, the burner can be securely attached to the holder.

  According to the invention of claim 3, the pair of left and right burner holders can be easily combined and integrated with one touch by engagement of the engaging claw provided on one side and the engaging hole provided on the other side, This allows the burner to be easily attached to the holder. Further, if the paired burner holders are disengaged from each other, both can be easily opened and the burner can be easily detached from the holder with one touch.

It is a disassembled perspective view of the vehicle lamp principal part which concerns on this invention. These are the fragmentary plane sectional views which show the state at the time of the burner open | release of the vehicle lamp which concerns on this invention. It is a fragmentary flat sectional view which shows the state at the time of the burner fixation of the vehicle lamp which concerns on this invention. It is a partial plane sectional view of the vehicular lamp which shows another form of the present invention.

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

  1 is an exploded perspective view of a main part of a vehicular lamp according to the present invention, FIG. 2 is a partial plan view showing a state when the burner of the vehicular lamp is opened, and FIG. 3 is a state when the burner is fixed to the vehicular lamp. 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). The 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 3. 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.

  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 °).

  Circular holes 17 are respectively formed on the upper and lower surfaces of the front end opening side of the left and right burner holders 16, and these circular holes 17 are fitted to the pins 10 formed on the upper and lower surfaces of the holder 6. The burner holder 16 is pivotally attached to the holder 6 so that the pin 10 can be opened and closed. The left and right burner holders 16 are set to a size (inside dimension) that can be fitted to and cover the outer surfaces of the lighting device 4 of the holder 6 and the burner 5 attached thereto.

  Further, the engaging claws 18 and the engaging holes 19 are alternately arranged on the upper and lower surfaces of the burner holder 16 (that is, one engaging claw 18 is engaged with the other engaging hole 19). Each is formed. Specifically, an engagement hole 19 is formed on the upper surface of the left burner holder 16, an engagement claw 18 (not shown) is formed on the lower surface, an engagement claw 18 is formed on the upper surface of the right burner holder 16, and an engagement hole is formed on the lower surface. 19 are formed. A claw-like spring 20 that can be elastically deformed is integrally formed on the rear end surfaces of the left and right burner holders 16. Instead of the spring 20 formed integrally with the resin burner holder 16, a separate metal spring 20 may be used as shown in FIG.

  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 provided in the reflector 2, first, the earth plate 11 is fitted into the holder 6, and a total of four hooks formed on the left and right sides thereof are fitted. 15 is hooked on the edge of the left and right side walls of the holder 6, and the upper and lower brackets 13 are aligned with the upper and lower bosses 8 on the holder 6 side, and the screws 21 inserted into the circular holes 13 a of these brackets 13 are inserted into the bosses 8 on the holder 6 side. The ground plate 11 is attached to the holder 6 by being screwed into the screw hole 8a. 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 opened and joined 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 centered on the pins 10 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. As shown in FIG. 3, the two burner holders 16 are combined and integrated as shown in FIG. . Then, the spring 20 formed on the rear end surface of each burner holder 16 abuts on the rear end surface of the lighting device 4 and presses the entire burner 5 toward the holder 6, so that the flange 3 a formed on the base 3 </ b> B of the discharge lamp 3. Is pressed against the seating surface 6A of the holder 6, the flange 3a and the lighting device 4 are sandwiched between the spring 20 and the seating surface 6A of the holder 6, and the burner 5 is securely fixed to the holder 6.

  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 18 and the engagement holes 19 of the left and right burner holders 16 is released, and both the burner holders 16 are removed. Are rotated in directions away from each other about the pin 10 of the holder 6 (counter arrow direction in FIG. 2) to open them, the spring 20 of the burner holder 16 and the flange 3a of the base 3B formed by the seating surface 6A of the holder 6 are turned on. Since the clamping of the device 4 is released, the burner 5 can be pulled out as it is and can be 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 closing the pair of burner holders 16 and coupling them together. The burner 5 attached to the holder 6 can be easily removed from the holder 6 simply by opening and opening the combined burner holder 16. 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, one pair of left and right burner holders 16 can be easily engaged with one engagement claw 18 provided on one side and the engagement hole 19 provided on the other. If the engagement between the engagement claw 18 and the engagement hole 19 is released, the pair of burner holders 16 that are coupled to each other can be easily opened, and the burner 5 is removed from the holder 6. It can be easily removed with a single touch.

  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 hole 14 Claw 15 Hook 16 Burner holder 17 Burner holder circle 18 Burner holder engagement claw 19 Burner holder engagement hole 20 Spring 21 Screw

Claims (3)

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,
A pair of burner holders are pivotally attached to the holder so as to be openable and closable, the burner is fitted into the holder, a part thereof is pressed against a seating surface formed on the holder, the burner holder is closed, and the holder and this The lighting device of the burner fitted in is covered with the burner holder, and the burner holder is combined and integrated, and the burner is pushed in by a spring provided on these end faces to fix the burner to the holder. A vehicular lamp.   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 and the lighting device are connected to the spring of the burner holder and the seat surface of the holder. The vehicular lamp according to claim 1, wherein the vehicular lamp is sandwiched between the two. The vehicle according to claim 1 or 2, wherein both burner holders are coupled and integrated by engagement of an engaging claw formed on one of the pair of left and right burner holders and an engaging hole formed on the other. Lamps.

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