WO2010092643A1 - ヘッドランプ光源用点灯装置 - Google Patents
ヘッドランプ光源用点灯装置 Download PDFInfo
- Publication number
- WO2010092643A1 WO2010092643A1 PCT/JP2009/005840 JP2009005840W WO2010092643A1 WO 2010092643 A1 WO2010092643 A1 WO 2010092643A1 JP 2009005840 W JP2009005840 W JP 2009005840W WO 2010092643 A1 WO2010092643 A1 WO 2010092643A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- lighting device
- light source
- headlamp
- connector
- output
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/0088—Details of electrical connections
- B60Q1/0094—Arrangement of electronic circuits separated from the light source, e.g. mounting of housings for starter circuits for discharge lamps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/17—Discharge light sources
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/19—Attachment of light sources or lamp holders
- F21S41/192—Details of lamp holders, terminals or connectors
Definitions
- the present invention relates to a lighting device for a light source that is attached to a case of an in-vehicle headlamp, and more particularly to the shape of an output connector.
- a lighting device for a light source is attached to an opening provided in a bottom portion of the headlamp case so as to constitute a part of a wall portion of the headlamp case.
- a configuration is known in which the lighting device is integrated with the headlamp to ensure the waterproofness of the headlamp.
- Patent Document 1 since the output connector is arranged at a position lower than the bottom surface inside the headlamp case, the water collected on the bottom surface inside the headlamp case flows into the output connector. There is a problem that it is easy to get wet.
- an object of the present invention is to propose a lighting device for a headlamp light source in which an output connector is difficult to get wet.
- a headlamp light source lighting device includes an output connector that is attached to an opening provided at the bottom of a headlamp case that houses a light source, and to which a cable for supplying power to the light source is connected.
- the output connector is arranged such that when the headlamp light source lighting device is attached to the headlamp case, the bottom of the connection port to which the cable of the output connector is connected is higher than the bottom surface inside the headlamp case. It is formed as follows.
- the bottom of the connection port to which the cable of the output connector is connected is lower than the bottom surface inside the headlamp case. Since the output connector is formed so as to be disposed at a high position, water does not flow because it has accumulated on the bottom surface inside the headlamp case, and the output connector can be made difficult to get wet.
- Sectional drawing which shows the male connector 15a for output in this invention The exploded perspective view which shows the male connector 15b for output in this invention Sectional drawing which shows the male connector 15b for output in this invention
- Sectional drawing which shows other embodiment of the lighting device 3 in this invention The fragmentary sectional view which shows the vehicle-mounted headlamp which concerns on other embodiment of this invention.
- FIG. 1 is a partial sectional view showing an in-vehicle headlamp according to an embodiment of the present invention.
- the in-vehicle headlamp includes a headlamp case 1, a discharge lamp 2, a lighting device 3, a reflecting mirror 4, and an output.
- the harness 5, the igniter 6, the waterproof member 7, and the power harness 10 are configured.
- the headlamp case 1 includes a discharge lamp 2, a reflecting mirror 4, an igniter 6, and an output harness 5, and a circular opening 8 for attaching the lighting device 3 is formed below the headlamp case 1. Has been.
- the lighting device 3 is attached to the opening 8 of the headlamp case 1 via the waterproof member 7, and the output male connector 15 provided on the upper portion of the lighting device 3 is connected to the headlamp case 1 from the opening 8. Projects inside.
- An output female connector 14 formed at the end of the output harness 5 on the lighting device 3 side is connected to the connector 15.
- An igniter 6 is connected to the other end of the output harness 5, whereby the lighting device 3 is electrically connected to the igniter 6.
- the cable portion 13 of the output harness 5 extends downward from the igniter 6, then curves in the direction of the connector 15 and changes its direction, and is connected to the connector 14.
- the connection point between the cable portion 13 and the connector 14 is located inside the opening 8 of the headlamp case 1.
- the igniter 6 is composed of, for example, a transformer having a large winding ratio on the primary side and the secondary side, and a high-pressure pulse of approximately 20,000 V is applied to the discharge lamp 2 based on the voltage applied from the lighting device 3. Then, discharge of the discharge lamp 2 is started.
- the discharge lamp 2 is also electrically connected to the lighting device 3 via the igniter 6, and the lighting device 3 lights the discharge lamp 2 by supplying power to the discharge lamp 2 via the output harness 5.
- Control For example, a voltage-current curve for keeping the light output of the lamp 2 constant is stored in the lighting device 3, and lighting control is performed based on the curve so that the light output of the discharge lamp 2 becomes constant.
- the reflecting mirror 4 is fixed to the headlamp case 1 by an attachment member (not shown) so as to surround the periphery of the discharge lamp 2, and the light from the discharge lamp 2 is directed forward (that is, leftward in FIG. 1). reflect.
- the front surface of the headlamp case 1 is configured to transmit light, and the light reflected by the reflecting mirror 4 is transmitted through the front surface of the headlamp case 4 and emitted forward.
- the waterproof member 7 is a waterproof elastic member made of, for example, a rubber material, and is pressed in the vertical direction by the lower surface of the headlamp case 1 and the upper surface of the lighting device 3 so as to be in close contact with the headlamp case 1 and the lighting device 3. This prevents water from entering the headlamp case 1 from the lower surface of the headlamp case 1 or the upper surface of the lighting device 3.
- the power harness 10 is a cable for supplying power from a battery (not shown) to the lighting device 3.
- a power input male connector 56 is formed at the end of the lighting device 3, and the input male connector 56 is connected to the power input male connector 12 provided in the lighting device 3.
- the other end of the power harness 10 is connected to a battery (not shown), and the lighting device 3 is grounded via the power harness 10.
- FIG. 2 is a partial cross-sectional view showing the lighting device 3 and shows a state before the output harness 5 and the power harness 10 are connected to the lighting device 3. Only a part of the headlamp case 1 is shown.
- FIG. 3 is a perspective view showing the connector 15.
- FIG. 4 is a perspective view showing the lighting device 3. 2 to 4, the same or corresponding components as those in FIG. 1 are denoted by the same reference numerals, and description thereof is omitted.
- the case 9 is formed by aluminum die casting, and a substrate 11 on which a lighting circuit for controlling the lighting of the discharge lamp 2 is mounted is fixed inside the case 9.
- a cylindrical portion 57 having an opening 50 on the upper surface is formed on the upper portion of the case 9, and a connector 15 is attached to the upper surface of the case 9 with the protruding portion 52 inserted into the opening 50.
- a waterproof member 58 is interposed between the connector 15 and the case 9 to prevent water from entering the case 9 from the headlamp case 1 passing between the connector 15 and the case 9.
- the connector 15 has an insertion portion 18 (connection port) that opens in a direction substantially parallel to a surface on which the case 9 is fixed to the headlamp case 1. Inside the insertion portion 18, a terminal of the output line 31 is provided inside the insertion portion 18, a terminal of the output line 31 is provided. A part 19 is arranged.
- the connector fixing claw 17 formed in the connector 14 is engaged with the connector fixing hole 16 formed in the connector 15, and the connector 14 is fixed to the connector 15. The Thereby, the output line 31 and the output line (power output line) included in the output harness 5 are electrically connected, and power supply to the discharge lamp 2 and the igniter 6 becomes possible.
- the output line 31 is bent in the direction of the substrate 11 in the connector 15, passes through the opening 50, reaches the substrate 11 in the case 9 from the protruding portion 52, and is soldered to the substrate 11 at the joint portion 20 that is the reaching portion. Has been.
- a power input male connector 12 is attached to a side portion of the case 9 in a state where a part thereof is inserted into an opening 51 formed in the side portion.
- the connector 12 and the substrate 11 are connected by an input line 60, whereby electric power is supplied to the lighting circuit on the substrate 11.
- a waterproof member 59 is interposed between the connector 12 and the case 9 to prevent water from entering the case 9 passing between the connector 12 and the case 9.
- the connector 12 opens in substantially the same direction as the connector 15.
- the diameter of the cylindrical portion 57 of the case 9 is smaller than the opening 8 of the headlamp case 1, and the cylindrical portion 57 enters the inside of the opening 8 when the case 9 is attached to the headlamp case 1. Yes. Therefore, the connector 15 provided on the upper surface of the cylindrical portion 57 is disposed at a position higher than the position of the bottom surface inside the headlamp case 1. In particular, the bottom surface of the insertion portion 18 of the connector 15 is disposed at a position higher than the bottom surface inside the headlamp case 1, and even if the connector 15 gets wet, water flows down from the connector 15 into the headlamp case 1, Connection failure due to water can be reduced.
- a screw hole (not shown) formed so that the screw 25 is screwed into the case 9 is formed, and the connector 15 is fixed to the case 9 by the screw 25.
- a projecting portion 24 provided with a screw hole 26 is provided on the side surface of the lighting device 3, and the lighting device 3 is fixed to the headlamp case 1 by screws (not shown).
- the connector 15 is a three-terminal connector having a terminal portion 19 including three terminals, and each terminal of the terminal portion 19 is electrically connected to a lighting circuit on the substrate 11.
- the output harness 5 includes three output lines respectively corresponding to the three terminals of the terminal portion 19.
- each of the output lines included in the output harness 5 is provided on the substrate 11. Electric power is supplied from the lighting circuit.
- two of the output lines are supplied with AC power of AC 85 [V] and 400 [Hz] for lighting the discharge lamp, and the other one is power for generating a high voltage pulse by the igniter 6. Is supplied.
- the drain groove 21 is formed as a concave groove on the upper surface of the disk part 22 formed in a disk shape from the inside of the insertion part 18 toward the outer peripheral part, and the water in the insertion part 18 is used as a headlamp. Drain into case 1.
- water in the insertion portion 18 can be easily drained, and an abnormal situation due to a decrease in resistance between the output terminals due to water can be quickly eliminated.
- channel 21 for drainage is not restricted to a concave shape, The hollow should just be formed toward an outer peripheral part. Moreover, in order to improve drainage, you may form so that it may have a slope toward an outer peripheral part.
- the screw hole 23 is a through hole for fixing the connector 15 to the case 9.
- the in-vehicle headlamp attaches the lighting device 3 to the headlamp case 1, and becomes a part of the wall of the headlamp case 1 to secure the waterproofness of the in-vehicle headlamp together. Because of this structure, water does not enter the headlamp case 1 during normal use. However, if the waterproofness of the headlamp case 1 becomes incomplete due to the distortion of the vehicle due to an accident, or if the maintenance cover attached to the rear of the headlamp case 1 is forgotten, the inside of the headlamp case 1 The water will invade.
- the applied voltage and energization current of the discharge lamp 2 are measured, and the resistance value is measured over time (for example, 0). Sampling is performed at intervals of 1 second. If the resistance value due to each sampling varies, it is determined that the operation is not a fixed resistance but an abnormal operation (the terminal unit 19 is submerged).
- the resistance of the discharge lamp 2 increases until the state of the discharge lamp 2 is stabilized, but does not decrease.
- the resistance value repeatedly increases and decreases. Accordingly, although the resistance value fluctuates both when the discharge lamp 2 is connected and when the terminal portion 19 is submerged, it is determined that the terminal portion 19 is submerged by detecting that the resistance value has decreased. Can do.
- the lighting device 3 When the terminal unit 19 is submerged, the lighting device 3 is in a stop operation until the power of the lighting device 3 is turned on again. repeat. Further, if the connector 15 is low in water and the water is dried by electrolysis due to energization and heat generation, the lighting operation is continued.
- the bottom portion of the insertion portion 18 of the connector 15 is arranged at a position higher than the bottom portion of the headlamp case 1, so It is possible to make it difficult for water to flow down and accumulate in the insertion portion 18. In addition, there is an effect of making it difficult for water to enter the insertion portion 18.
- the terminal portion 19 of the output line 31 is arranged at a position higher than the bottom portion of the headlamp case 1, even if water enters the insertion portion 18, the terminal portion 19 can be hardly covered with water.
- the lighting operation of the lighting device 3 is stopped by the above fail-safe function, but the connector 15 is temporarily covered with water. This is an abnormal situation and the abnormal lighting operation is also a transient abnormality. Therefore, it is not important if water enters the lighting device 3 and the lighting device 3 does not break down.
- the insertion portion 18 is opened sideways, when the output harness 5 is connected to the connector 15, the interval between the output harness 5 and the reflecting mirror 4 can be widely separated, and the output harness 5 is connected to the inner wall of the headlamp case 1. Therefore, it becomes easy to secure the clearance between the reflecting mirror 4 and the output harness 5 that are at a high temperature.
- the insertion portion 18 is opened upward, it is difficult to provide the connector 15 so as to protrude into the headlamp case 1 in order to prevent interference between the output harness 5 and the reflecting mirror 4.
- the output harness 5 and the reflecting mirror 4 are less likely to interfere with each other, and the connector 15 can be disposed at a high position with respect to the bottom surface inside the headlamp case 1. It becomes easy.
- the terminal portion 19 in the insertion portion 18 even if water accumulates at the bottom of the headlamp case 1. Is less likely to get wet.
- the drainage groove 21 is provided in the connector 15, water hardly remains in the insertion portion 18 of the connector 15, and the abnormal situation can be solved in a short time.
- the connector 15 is temporarily covered with water, it is possible to make the connector inexpensive and small by making the connector 15 non-waterproof without providing a cover.
- the lighting device 3 is often attached to the approximate center of the headlamp case 1, and the power harness 10 is often routed from the vehicle body side, that is, from the rear of the headlamp toward the center of the headlamp.
- the igniter 6 for mounting the discharge lamp 2 is mounted on the vehicle body side, that is, on the rear side of the headlamp with respect to the discharge lamp 2. It is arranged from the rear of the headlamp toward the center of the headlamp. Therefore, the direction in which the connector 15 opens and the direction in which the connector 12 opens are substantially the same direction, so that the power harness 10 and the output harness 5 can be arranged with natural bending.
- the lighting device 3 needs to dissipate internal heat, but the case 9 is made of aluminum having good heat dissipation, and the connector is made of resin having good insulation and easy to form a fine shape. 15 can be used to realize the lighting device 3 that takes advantage of the advantageous characteristics of both aluminum and resin. That is, by producing the case 9 and the connector 15 as separate components, components suitable for the respective functions can be combined, and a lighting device having good characteristics can be obtained.
- the lighting device 3 can be easily attached to and detached from the headlamp case 1.
- the connector fixing hole 16 is provided in the connector 15 and the connector fixing claw 17 is provided in the connector 14.
- the connector fixing hole 16 may be provided in reverse.
- the connector fixing hole 16 was provided in the upper part of the connector 15, you may provide it in a side part.
- the LED may be turned on.
- the fail-safe function is controlled so that the total current of the current flowing through the LED of the lighting device 3 and the current flowing through the resistance of the water becomes the original output current (constant current), so that the output voltage has decreased. By detecting this, it can be determined that the resistance value has dropped.
- FIG. 5 is a cross-sectional view showing the output male connector 15a according to the second embodiment.
- the connector 15a is provided with a vent hole 30, and the output line 31a is provided with a crank bending portion 53.
- the vent 30 is a through hole that leads from the insertion portion 18 to the inside of the case 9.
- One of the openings of the vent 30 is the same wall surface as the wall surface on which the terminal portion 19 inside the insertion portion 18 is provided, and is provided at a position higher than the terminal portion 19, and the other is the case 9. It is provided on the lower surface of the protrusion 52 that is inserted into the opening 50.
- a crank bending portion 53 is formed on the output line 31a. Since the output line 31a is insert-molded into the connector 15a and soldered to the substrate 11, the soldered portion (joint portion 20) of the substrate 11, the output line 31a, the connector 15, the case 9, the substrate 11, and the soldering A mechanical connection path is formed in the order of the parts. Since the amount of contraction or expansion due to temperature change differs for each member, the path from the soldering part to the connector 15 via the output line 31a and the soldering part to the connector 15 via the substrate 11 and the case 9 There is a difference in the amount of contraction or expansion in the route to reach, and stress is generated in the soldered portion. It is difficult to say that this stress is so small that there is no problem with respect to the proof stress of the soldered portion. If the stress is repeatedly applied due to repeated temperature changes, the soldered portion may crack.
- the crank bending portion 53 is formed on the output line 31a.
- the crank bending portion 53 absorbs the difference in shrinkage or expansion caused by the difference in the path by flexibly distorting, and relieves the stress generated in the soldering portion and reduces the strain amount. Can be prevented.
- the pressure change inside the device can be reduced (breathing) against the sudden temperature change occurring in the lighting device 3, and the waterproof property can be improved. Can do.
- a simple waterproof member waterproof seal
- water can be sufficiently prevented from entering, so that the water resistance of the waterproof member can be set low, and the waterproof structure of the lighting device 3 can be simplified. Therefore, the structure is simplified and the cost can be reduced.
- vent hole 30 is provided in the inner wall of the insertion portion 18 of the connector 15a, the vent hole is hidden behind the connector 14 in a state where the connector 14 is attached to the connector 15a, so that water does not easily enter from the vent hole. Become.
- the connector 15a is waterproofed by ventilating (breathing) using the gap between the cover of the output harness 5 and the output line. Can be further enhanced.
- the output line 31a is provided with a crank bending portion 53 that is bent to the crank on the way from the connector 15a to the board 11, crack generation in the soldered part (joint part 20) between the output line 31a and the board 11 is suppressed. can do.
- the opening of the vent 30 is provided on the same surface as the terminal portion 19, but may be provided on another inner wall, for example.
- the output line 31a is provided with a crank bending portion 53.
- the path line has a U-shape, an S-shape obtained by deforming the crank, or an ⁇ -shape obtained by modifying the U-shape.
- Other configurations that can absorb the amount of contraction or expansion due to the difference can also be taken.
- the connector 15a of the second embodiment has a protrusion 52 that is formed in a direction perpendicular to the mounting surface when the connector 15a is attached to the lighting device 3, and an insertion portion 18 that is formed in the horizontal direction. Therefore, there are two directions for removing the molding die. Therefore, there is a problem that the shape becomes complicated and the degree of freedom in design is hindered. Therefore, in the third embodiment, a connector having a shape that increases the degree of freedom in design is formed.
- FIG. 6 is a perspective view showing an output male connector 15b according to Embodiment 3, and FIG. 7 is a cross-sectional view thereof.
- the connector 15 b includes a cover member 27, a terminal holding member 28, an output line 31 including a terminal portion 19, and a moisture permeable filter 29, and each of these components is formed as a separate part.
- Projections 32, 33, 35, and 36 are formed on the upper surface of the disk-shaped portion 34 of the terminal holding member 28.
- the protrusion 36 is adjacent to the other protrusions 32, 33, and 35, and is surrounded by the other protrusions 32, 33, and 35 in the three directions.
- the protrusions 32, 33, and 35 are formed at substantially the same height, but the protrusion 36 is formed lower than the other protrusions.
- the projecting portions 32, 33, and 35 disposed around the projecting portion 36 constitute an insertion portion 44 into which the connector 14 is inserted together with a cover member 27 described later, so that the projecting portions 32 and 33 form both wall surfaces. To do.
- the insertion portion for inserting the output line 31 is formed in the protruding portion 36, and the output line 31 is press-fitted into the insertion port.
- An end portion of the output line 31 is bent at a right angle to the press-fitting direction of the output line 31, and the end portion constitutes the terminal portion 19 when the output line 31 is press-fitted into the insertion port.
- the vent part 30a is provided in the protrusion part 35.
- FIG. One of the openings of the vent 30 a is formed on the upper surface of the protrusion 35, and the other is formed on the lower surface of the protrusion 52 inserted into the opening 90 of the case 9.
- the periphery of the opening portion of the vent hole 30a provided on the upper surface portion of the projecting portion 35 is formed lower than other locations, and this is used as an arrangement space for arranging the moisture permeable filter 29.
- the moisture permeable filter 29 has a property of allowing a gas such as water vapor to pass therethrough and not allowing liquid water to pass therethrough, and can prevent water from entering while ensuring air permeability.
- the disk-shaped portion 34 is formed with a screw hole 40 for fixing the cover member 27, the terminal holding member 28, and the case 9.
- the protrusions 32, 33, 35, and 36, the insertion port for press-fitting the output line 31, the vent 30a, and the screw hole 40 are formed in a direction perpendicular to the mounting surface of the lighting device 3, respectively.
- the direction of removing the molding die for the terminal holding member 28 is one direction.
- the cover member 27 is attached to the terminal holding member 28 so as to cover the vent hole 30a and the terminal portion 19 from above by the upper surface portion 37.
- Side portions 38 are formed on both sides of the upper surface portion 37.
- the distance between the side surface portions 38 is formed to be larger than the distance between the protruding portions 32 and 33 of the terminal holding member 28, and when the cover member 27 is attached to the terminal holding member 28, the both side surface portions 38 are protruded portions 32 and 33.
- the upper surfaces of the projecting portions 32 and 33 are covered with the upper surface portion 37 of the cover member 27. Thereby, the insertion part 44 of the connector 14 is formed as mentioned above.
- a fixing portion 39 substantially parallel to the upper surface portion 37 extends outward at the lower end of the side surface portion 38, and the fixing portion 39 has a screw hole 41 corresponding to the screw hole 40 of the terminal holding member 28. Is formed.
- the cover member 27 is fixed to the case 9 together with the terminal holding member 28 by the screw holes 41.
- a rear surface portion 42 adjacent to the upper surface portion 37 and both side surface portions 38 is formed in the rear portion of the upper surface portion 37 of the cover member 27.
- the upper surface portion 37 is located at a position separated from the back surface portion 42 by the depth width of the protruding portion 35 of the terminal holding member 28 and is substantially parallel to the back surface portion 42 and more than the distance between the protruding portions 32 and 33 of the terminal holding member 28.
- a narrow protrusion 43 is formed. The height of the protruding portion 43 is formed lower than the distance from the terminal portion 19 to the upper surface portion 37 when the cover member 27 is attached to the terminal holding member 28.
- a connector fixing hole 16 is formed in the upper surface portion 37.
- the distance between the side surface portions 38 is formed larger than the distance between the protruding portions 32 and 33 of the terminal holding member 28, and the protruding portion is spaced from the back surface portion 42 by the depth width of the protruding portion 35 of the terminal holding member 28. 43 is formed, when the cover member 27 is attached to the terminal holding member 28, the side surface portions 38 and the protruding portions 32 and 33 are engaged, and the back surface portion 42, the protruding portion 43, and the protruding portion 35 are engaged. By doing so, the cover member 27 is positioned with respect to the terminal support member 28.
- the direction in which the molding die for the cover member 27 is removed is one direction.
- the upper surface portion 37 and the protruding portions 32, 33, and 35 form the insertion portion 44 that opens in the direction in which the terminal portion 19 faces, and the connector 14 can be attached. It becomes possible. In this way, a set of parts of the connector 15b can be formed with a simple mold.
- the member constituting the connector 15b is divided into the terminal support member 28 and the cover member 27, the restriction on the design is reduced and a connector having an arbitrary shape can be formed. Moreover, since the metal mold for manufacturing the connector 15b can be simplified and the molding speed can be increased, the manufacturing cost can be reduced.
- the moisture permeable filter in the upper part of the opening on the connector 15b side of the vent 30a, it is possible to suppress the intrusion of water while ensuring the breathability.
- the moisture permeable filter 29 disposed on the upper surface portion of the protruding portion 35 is covered with the upper surface portion 37 of the cover member 27, the moisture permeable filter 29 is protected from being damaged by an accident such as a falling object hitting it. can do. Moreover, since it is not necessary to separately prepare a part for covering the permeable filter 29, the cost can be reduced.
- cover member 27 is fixed to the terminal holding member 28 with screws, it can be securely attached with a simple configuration.
- the terminal holding member 28 and the cover member 27 are fixed with screws.
- the protrusions 45 are provided on the outer side surfaces of the protrusions 32a and 33a of the terminal holding member 28a.
- the terminal holding member 28a and the cover member 27a are provided so that the concave portions 46 are provided on both side surface portions 38a of the cover member 27a, and the concave portions 46 of the cover member 27a are engaged (snap fit) with the convex portions 45 of the terminal holding member 28a. Can also be fixed.
- the convex part 45 may be provided inside the both side surface part 38a of the cover member 27a, and the recessed part 46 may be provided in the protrusion parts 32a and 33a of the terminal holding member 28a.
- the output line 31 is press-fitted into the insertion hole formed in the protrusion 36.
- the output line 31 may be integrally formed as in the first and second embodiments.
- FIG. 9 is a cross-sectional view showing the output male connector 15c according to the fourth embodiment. The same or corresponding components as those in FIGS.
- the protruding portion 35 c of the terminal holding member 28 c is formed higher than the protruding portions 32 and 33. Further, a fixing claw 47 is formed in the lower part of the disk-shaped part 34 of the terminal holding member 28c, and a fixing hole for engaging with the fixing claw 47 is provided in the upper surface portion of the case 9 of the lighting device 3. Thus, the connector 15c can be fixed to the case 9.
- a vent 30c is formed inside the protrusion 35c, and an opening of the vent 30c is formed on the upper surface.
- the output line 31c has a U-shaped bent portion 54 that is bent in a U-shape.
- the upper surface portion 49 on the back surface portion 42c side of the cover member 27c is positioned higher than the upper surface portion 37c on the front surface side, and when the cover member 27c is attached to the terminal holding member 28c, the upper surface portion 49, the back surface portion 42c, the wall surface portion 48, The protrusion 35c is formed so as to engage with it.
- the protruding portion 35c is formed high, and the opening portion of the vent 30c is provided on the upper surface of the protruding portion 35c. Therefore, the headlamp case increases as the water level accumulated at the bottom of the headlamp case 1 increases. Even when water enters 1, water can hardly enter through the vent 30 c.
- the output harness 5 includes three output lines. However, when the lighting device 3 controls the lighting of the discharge lamp 2, some electromagnetic waves may be emitted from these output lines. is there. Since this electromagnetic wave can cause other vehicle-mounted devices to malfunction, in this case, a conductive shield member is provided so as to surround the three output lines.
- FIG. 10 is a cross-sectional view of the lighting device 3 provided with a ground terminal 55 which is a ground terminal of the shield member.
- the connector 15 b is attached to the case 9 of the lighting device 3 with the screw 25 together with the ground terminal 55. Since the case 9 is grounded, the ground terminal 55 electrically connected to the case 9 is also grounded. If the ground terminal 55 is fixed by using the screw 25 for fixing the connector 15 as described above, the ground terminal 55 can be easily provided and the shield member can be grounded.
- FIG. 10 the connector 15 b is attached to the case 9 with the screw 25 together with the ground terminal 55, but the configuration in which the connector 15 or 15 a is attached to the case 9 can also be applied.
- FIG. 10 the connector 15 b is attached to the case 9 with the screw 25 together with the ground terminal 55, but the configuration in which the connector 15 or 15 a is attached to the case 9 can also be applied.
- FIG. 6 the connector 15 or 15 a is attached to the case 9 can also be applied.
- the connector 15 and the case 9 are fixed by the screw 25.
- the connector 15 may be made of resin integrally with the case 9 as a part of the case 9.
- the reliability of the lighting device 3 can be improved by reducing the water intrusion route.
- the process of assembling the connector 15 to the case 9 can be eliminated, and the assembling cost can be reduced.
- the manufacturing cost of the connector 15 can be reduced.
- the connectors 15b and 15c and the case 9 of the lighting device 3 are separately configured and fixed by screws or fixing claws 47, but the terminal holding members 28 to 28c and the case 9 are integrally formed of resin. You can also.
- a screw hole for attaching the cover member 27 may be provided on the side of the terminal holding member 28 formed integrally.
- the insertion portion 18 of the connector 15 is opened in the horizontal direction with respect to the surface fixed to the case 1 of the case 9, but may be opened in the vertical direction as shown in FIG. it can.
- the connector by forming the connector so that the bottom portion of the insertion portion is higher than the bottom surface inside the headlamp case 1, it is possible to prevent water from flowing into the headlamp case 1.
- an opening hole connected to the case 1 is provided at the bottom of the insertion portion, water can be drained from the opening hole into the case 1 even if water enters the insertion portion.
- the drainage as described above can be realized by providing a notch reaching the bottom of the insertion portion on the wall surface surrounding the insertion portion.
- the opening direction of the insertion portion is not limited to the vertical direction, and may be inclined by a predetermined angle.
- the headlamp case 1 has been described as including the igniter 6 and the output harness 5. However, a part or all of the igniter 6 and the output harness 5 are arranged outside the headlamp case 1. May be.
- the discharge lamp 2 was used as the light source for headlamps
- a halogen lamp, LED (Light Emitting Diode), or the like can be used as the light source.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
Description
図1は、本発明の一実施形態に係る車載ヘッドランプを示す部分断面図であり、図中において、車載ヘッドランプは、ヘッドランプケース1、放電灯2、点灯装置3、反射鏡4、出力ハーネス5、イグナイタ6、防水部材7、電源ハーネス10によって構成されている。
出力ハーネス5は端子部19の3端子に各々対応する3本の出力線を含んでおり、コネクタ15にコネクタ14が接続されると、出力ハーネス5に含まれる出力線のそれぞれに基板11上の点灯回路から電力が供給される。例えば、出力線のうち2本には放電灯を点灯させるためのAC85[V]、400[Hz]の交流電力が供給され、残りの1本にはイグナイタ6による高電圧パルス発生のための電力が供給される。
水が電気分解されると泡(ガス)が発生し水が押し出されると共に、発熱によって水が蒸発するため、通電電流は早々に減少する。また、当電気分解による泡が脱出しコネクタ15内に水が浸入すれば、再度抵抗値が減少する。このように、水を介在する抵抗は、通電によってふらつき、抵抗値が不安定で一定ではないため、当不安定さを検出すれば、端子部19間に水が介在していることを判別できる。
実施の形態2.
実施の形態3.
実施の形態4.
図9は、実施の形態4に係る出力用オスコネクタ15cを示す断面図である。図6及び図7と同一または対応する構成については同一符号を付し、説明を省略する。
また、端子保持部材28cの円板状部34の下部には固定爪47が形成されており、点灯装置3のケース9の上面部に当該固定爪47と係合する固定穴を設けておくことで、コネクタ15cをケース9に固定することができる。また、突出部35cの内部には通気口30cが形成されており上面部には通気口30cの開口部が形成されている。また、出力線31cはコの字状に曲げられていたコの字曲げ部54を有している。
実施の形態5.
実施の形態6.
実施の形態7.
2 放電灯
3 点灯装置
5 出力ハーネス
6 イグナイタ
7 防水部材
8 開口部
9 ケース
10 電源ハーネス
11 基板
12 電源入力用オスコネクタ
13 ケーブル部
14 出力用メスコネクタ
15 出力用オスコネクタ
21 排水用溝
27 カバー部材
28 端子保持部材
29 透湿性フィルタ
30 通気口
31 出力線
53 クランク曲げ部
54 コの字曲げ部
55 アース端子
Claims (18)
- 光源を収容するヘッドランプケースの底部に設けられた開口部に取り付けられるヘッドランプ光源用点灯装置であって、
前記光源に電力を供給するための出力ハーネスが接続される出力コネクタを備え、
前記出力コネクタは、当該ヘッドランプ光源用点灯装置を前記ヘッドランプケースに取り付けた場合に、当該出力コネクタの前記出力ハーネスが接続される接続口の底部が、前記ヘッドランプケース内部の底面よりも高い位置に配置されるように形成されることを特徴とするヘッドランプ光源用点灯装置。 - 前記接続口は、横向きに開口することを特徴とする請求項1記載のヘッドランプ光源用点灯装置。
- 前記出力コネクタは、前記接続口の内部から当該出力コネクタの外縁に向かって延びる排水溝を有することを特徴とする請求項1記載のヘッドランプ光源用点灯装置。
- 前記出力線の一端は、前記出力コネクタの接続口内に端子部として配置され、
前記端子部は、前記ヘッドランプケース内部に露出していることを特徴とする請求項1記載のヘッドランプ光源用点灯装置。 - 当該光源用点灯装置に電力を供給するための入力ハーネスが接続される入力コネクタをさらに備え、
前記入力コネクタの接続口は、上記出力コネクタの接続口の開口する方向と略同方向に開口することを特徴とする請求項2記載のヘッドランプ光源用点灯装置。 - 前記出力コネクタは当該点灯装置の内部から外部に貫通する通気口を有することを特徴とする請求項1記載のヘッドランプ光源用点灯装置。
- 前記通気口の開口部は、前記出力コネクタの接続口の内部に設けられていることを特徴とする請求項6項記載のヘッドランプ光源用点灯装置。
- 前記出力コネクタは、当該出力コネクタの接続口よりも高い位置に突出した突出部を有し、前記通気口の開口部は前記突出部の上部に設けられることを特徴とする請求項6記載のヘッドランプ光源用点灯装置。
- 前記通気口の開口部には、透湿性のフィルタが設けられていることを特徴とする請求項6記載のヘッドランプ光源用点灯装置。
- 前記出力コネクタは、前記光源へ供給するための電力を出力する基板と出力線を介して接続されており、
前記出力線は、前記基板から前記出力コネクタに至るまでの途中に曲げ部を有することを特徴とする請求項1記載のヘッドランプ光源用点灯装置。 - 前記出力コネクタは、当該光源用点灯装置のケースと一体に形成されることを特徴とする請求項1記載のヘッドランプ光源用点灯装置。
- 前記出力コネクタは、当該光源用点灯装置のケースに防水部材を介して取り付けられることを特徴とする請求項1記載のヘッドランプ光源用点灯装置。
- 前記出力コネクタは、当該出力コネクタの端子を保持する端子保持部と、当該端子保持部に取り付けられるカバー部とからなることを特徴とする請求項1記載のヘッドランプ光源用点灯装置。
- 前記出力コネクタは、当該コネクタの端子を保持する端子保持部と、当該端子保持部に取り付けられるカバー部とからなり、
前記カバー部は、前記透湿性フィルタの表面を覆うように前記端子保持部に取り付けられることを特徴とする請求項9に記載のヘッドランプ光源用点灯装置。 - 前記光源に電力を供給するための出力ハーネスは、電力出力線及び当該電力出力線からの電磁放出を遮断するためのシールド部材とから構成されるものであって、
前記出力コネクタは、前記シールド部材が接続される接続端子と共に、当該光源用点灯装置の接地されたケースにネジにより取り付けられることを特徴とする請求項12記載のヘッドランプ光源用点灯装置。 - 前記出力ハーネスは、前記出力コネクタの接続口内に挿入されるコネクタを有するものであって、
当該ヘッドランプ光源用点灯装置を前記ヘッドランプケースに取り付けたときに、前記出力コネクタおよび出力ハーネスに付属するコネクタの外周部が、前記ヘッドランプケースの底部に設けられた開口部の内側に配置されるように、出力コネクタの位置を設定することを特徴とする請求項1記載のヘッドランプ光源用点灯装置。 - 光源を収容するヘッドランプケースの底部に設けられた開口部に取り付けられるヘッドランプ光源用点灯装置であって、
前記光源に供給するための電力を出力する基板と、
前記基板を収容するケースと、
前記ケースの上部に設けられ、前記基板と出力線を介して接続され、前記光源に電力を供給するための出力ハーネスが接続される出力コネクタと
を備え、
前記出力コネクタは前記ケースと一体に構成されることを特徴とする請求項1に記載のヘッドランプ光源用点灯装置。 - 前記出力コネクタと前記光源へ供給するための電力を出力する基板とを接続し、一端部が前記出力コネクタの端子部を形成する複数の出力線と、
前記端子部間の抵抗値を検出する検出手段と、
当該ヘッドランプ光源用点灯装置の動作を停止するフェールセーフ手段とを備え、
前記フェールセーフ手段は、前記端子部間の抵抗が低下した場合に、当該ヘッドランプ光源用点灯装置の動作を停止することを特徴とする請求項1から17のいずれか1項に記載のヘッドランプ光源用点灯装置。
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE112009004314T DE112009004314T5 (de) | 2009-02-16 | 2009-11-04 | Beleuchtungseinrichtung für eine Frontscheinwerferlichtquelle |
| JP2010550351A JP4727001B2 (ja) | 2009-02-16 | 2009-11-04 | ヘッドランプ光源用点灯装置 |
| CN2009801572310A CN102317679B (zh) | 2009-02-16 | 2009-11-04 | 头灯光源用照明装置 |
| US13/144,852 US8235553B2 (en) | 2009-02-16 | 2009-11-04 | Lighting device for a headlamp light source |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009032620 | 2009-02-16 | ||
| JP2009-032620 | 2009-02-16 |
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| Publication Number | Publication Date |
|---|---|
| WO2010092643A1 true WO2010092643A1 (ja) | 2010-08-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2009/005840 Ceased WO2010092643A1 (ja) | 2009-02-16 | 2009-11-04 | ヘッドランプ光源用点灯装置 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US8235553B2 (ja) |
| JP (1) | JP4727001B2 (ja) |
| CN (1) | CN102317679B (ja) |
| DE (1) | DE112009004314T5 (ja) |
| WO (1) | WO2010092643A1 (ja) |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP4727001B2 (ja) | 2011-07-20 |
| CN102317679A (zh) | 2012-01-11 |
| DE112009004314T5 (de) | 2012-04-26 |
| JPWO2010092643A1 (ja) | 2012-08-16 |
| US8235553B2 (en) | 2012-08-07 |
| CN102317679B (zh) | 2013-12-25 |
| US20110280035A1 (en) | 2011-11-17 |
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