JPH0238846Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a lighting device control circuit that complies with the Dame Deep Regulation.

Conventional Technology Automobiles are products that are used by an unspecified number of people under various conditions, so from the perspective of ensuring safety during use, laws and regulations concerning the structure and function of the automobile itself, driving, A wide variety of laws and regulations have been enacted, including those regarding use. Furthermore, the laws and regulations regarding automobiles differ from country to country, and automobile manufacturers must produce cars with structures that comply with the laws and regulations of each country. In the current situation as described above, when producing a car for the UK that complies with British vehicle regulations, one of the regulations that must be met is the Dame Deep Regulation. This dame dip regulation applies when the engine is running and the headlights are off, and when the tail switch of the car is turned on and small lamps such as clearance lamps, tail lamps, license plate lamps, etc. are turned on. This stipulates that headlamps should be lit at 15% of their normal brightness. As a method to comply with this Dame Deep regulation,
For example, when the tail switch is turned on while the engine is running, a resistor is interposed in the circuit connecting the battery and the low beam filament of the headlamp, and the low beam filament is turned on with dimmed light, or the headlamp is turned on. In addition to the low beam and high beam filaments, there are some that have a dim dip filament built in and turn on the dim dip filament when the tail switch is turned on.

Problems to be Solved by the Invention As mentioned above, in order to comply with the dame depth regulations, if a method is adopted in which a resistor is interposed as necessary between the battery and the low beam filament, the resistor is relatively expensive and at the same time However, when electricity is applied to the resistor, the resistor itself generates heat, so safety measures must be taken to prevent this heat generation, resulting in an increase in costs. Furthermore, when a filament for the dim dip is provided separately, the structure becomes complicated, leading to an increase in costs.

Means for Solving the Problem A lighting device control circuit that complies with the Dame Deep Regulation is incorporated into a headlamp of an automobile, including a pair of low beam filaments and a pair of high beam filaments, and the pair of low beam filaments connected in parallel to a battery. a low beam day switch for lighting the above-mentioned high beam filament, a high beam day switch for lighting the pair of high beam filaments connected in parallel to the battery, a tail switch for lighting the small lamp, and the above when the engine is running. Daylight switch for low beam and high beam
When the tail switch is turned off and the tail switch is turned on, the pair of low beam filaments are connected in series to the battery and a dame-date relay is used to turn on the light.

Operation When the engine is running, the low beam and high beam daylight switches are OFF, and
When the tail switch is turned on, a pair of low beam filaments are connected in series to the battery and turned on, so that when the tail switch is turned on, the light is turned on with the low beam filament dimmed. It is.

Embodiment FIG. 1 shows a lighting device control circuit according to the present invention. In this embodiment, when a pair of low beam filaments are connected in series, half the normal voltage, that is, 6V, is applied to both, and the low beam Focusing on the fact that the amount of light from the filament is 15% of the normal amount, a pair of low beam filaments are connected in series only during dim dip. In the figure, 1 is a tail switch for lighting small lamps such as clearance lamps, tail lamps, license plate lamps, etc. One terminal 1a of this tail switch 1 is connected to the + terminal of the battery. other terminal 1
b is connected to a small lamp control circuit (not shown). 2 is a first bulb installed in a headlamp installed on the front left side of the car; 3 is a second bulb installed in a headlamp installed on the front right side of the car; 2a and 3a are the first and second bulbs 2; , 3 respectively, 2b and 3b are a pair of high beam filaments, and 4 is a high beam indicator connected to be lit in conjunction with the lighting of the high beam filament 2b.
5 is a low beam day switch for lighting the low beam filaments 2a and 3a, 6 is a high beam day switch for lighting the high beam filaments 2b and 3b, and 7 is a low beam day switch for turning on the low beam day switch 5 or the high beam day switch 6. ON in conjunction
This is a lighting switch. One terminal 5a of the low beam daylight switch 5 is connected to low beam filaments 2a, 3a and a fourth
The other terminal 5b is connected to the coil 12c of the relay 12, and the other terminal 5b is grounded. Also, one terminal 6a of the high beam daylight switch 6 is connected to the high beam filament 2b of the first bulb 2, the contact 10b of the second relay 10 (described later), and the fourth terminal (described later).
is connected to the coil 12c of the relay 12, and the other terminal 6b is grounded. Also, one terminal 7a of the lighting switch 7 is connected to the + terminal of the battery, and the other terminal 7b is connected to the first bulb 2.
It is connected to a common terminal 2c connected to a low beam filament 2a and a high beam filament 2b, and to a fixed contact 9b of a first relay 9, which will be described later. 8 is a dame date relay for connecting the low beam filaments 2a and 3a in series during dame dip, and this dame date relay 8 switches between the circuit for low beam and high beam and the circuit for dame dip. The first relay 9 has a movable contact 9a and fixed contacts 9b, 9c for the purpose of opening the high beam circuit at the time of dimming, and the movable contact 9a is normally in contact with the fixed contact 9b. A normally closed second relay 10, a normally open third relay 11 for connecting the low beam filaments 2a and 3a in series during dim dip, and the first
A normally closed fourth relay 12 for controlling the third relays 9, 10, and 11. The fixed contact 9b of the first relay 9 is connected to the terminal 7b of the lighting switch 7, the fixed contact 9c is grounded, and the movable contact 9a is connected to the low beam filament 3a of the second bulb 3 and the high beam filament 3a. It is connected to a common terminal 3c connected to the filament 3b. Contact 1 of second relay 10
0a is connected to the high beam filament 3b of the second bulb 3, and the contact 10b is connected to the terminal 6a of the high beam daylight switch 6. Third
The contact 11a of the relay 11 is connected to the + terminal of the battery, and the contact 11b is connected to the common terminal 2c of the first valve 2. Moreover, each coil 9d, 10c, 1 of the first to third relays 9, 10, 11
One end of 1c is connected to terminal 1b of tail switch 1, and the other end is connected to contact 12a of fourth relay 12. Also, the contact 12 of this fourth relay 12
b is grounded, one end of the coil 12c is connected to the terminal 1b of the tail switch 1, and the other end of the coil 12c is connected to a low beam daylight switch 5, a high beam daylight switch 6, and a diode 13 to a regulator (not shown). ,14,1
It is connected via 5. One end of the coil 12c connected to the above three locations is connected to the low beam and high beam daylight switches 5 and 6 that are turned off.
When the engine is running, it is open, and when the low beam daylight switch 5 or high beam daylight switch 6 is turned on, or when the engine is stopped, it is grounded. Further, in the figure, 16, 17, and 18 are fuses interposed in the circuit.

In the above configuration, when the tail switch 1 is turned ON while the engine is in a driving state and the daylight switches 5 and 6 for low beam and high beam are OFF, the contacts 12a and 12b of the fourth relay 12 are turned on. In order to maintain the closed state, each coil 9 of the first to third relays 9, 10, 11
d, 10c, and 11c, the movable contact 9a of the first relay 9 contacts the fixed contact 9c, and the second
The contacts 10a and 10b of the relay 10 are open, and the third
Contacts 11a and 11b of relay 11 are closed. Then, from the + terminal of the battery to the contacts 11a, 11b of the third relay 11, the common terminal 2 of the first valve 2
The current flows from the common terminal 2c to the low beam filament 2a of the first bulb 2, the second
Current flows to the low beam filament 3a of the second bulb 3, the common terminal 3c of the second bulb 3, the movable contact 9a of the first relay 9, and the fixed contact 9c.
Therefore, the low beam filaments 2a and 3a of the first and second bulbs 2 and 3 are connected in series to the + terminal of the battery to light up, and the low beam filaments 2a and 3a are connected to the normal 15
Lights up at % brightness. That is, when the engine is running and the low beam and high beam daytime switches 5 and 6 are OFF, when the tail switch 1 is turned on, the low beam filaments 2a and 3a are activated by the action of the dame date relay 8.
A dim dip circuit is constructed by connecting the two in series. In addition, when configuring the above-mentioned dim dip circuit,
By turning on the low beam daytime switch 5 or the high beam daytime switch 6, or by stopping the engine, the coil 12c of the fourth relay 12 is energized to open the contacts 12a and 12b of the fourth relay 12, or the tail By turning off the switch 1, the coils 9d, 10c, 11c of the first to third relays 9, 10, 11
When the power supply to the relays 9, 10, and 11 is stopped, the first to third relays 9, 10, and 11 return to their original states, so that the dim dip circuit is automatically canceled.

In the state shown in FIG. 1, when the low beam daylight switch 5 is turned on, the lighting switch 7, which is linked to the low beam daylight switch 5, is turned on.
turns on. Also, daylight switch 5 for low beam
When turned on, the coil 12c of the fourth relay 12 is grounded, and the tail switch 1
Coils 9d, 1 of the first to third relays 9, 10, 11 depending on ON/OFF, engine drive/stop
Power supply to 0c and 11c is blocked. For this reason,
The first to third relays 9, 10, 11 maintain the state shown in FIG. Therefore, from the + terminal of the battery to the terminals 7a and 7b of the lighting station 7, the common terminal 2c of the first bulb 2, the low beam filament 2a, and the terminal 5 of the low beam daylight switch 5.
A and 5b, and at the same time the low beam filament 2a lights up, the current flows from the terminal 7b of the lighting switch 7 to the fixed contact 9b of the first relay 9, the movable contact 9a, the common terminal 3c of the second bulb 3, and the low beam. Current flows to the terminals 5a and 5b of the low beam daytime switch 5 and the low beam filament 3a, and the low beam filament 3a also lights up. In other words, turn on the low beam daylight switch 5.
Then, the low beam circuit will be configured regardless of whether tail switch 1 is ON or OFF or whether the engine is running or stopping, and the battery and low beam filament 2 will be configured.
a, 3a are connected in parallel, and the low beam filaments 2a, 3a are lit with normal brightness.

Also, in the state shown in FIG. 1, when the high beam daylight switch 6 is turned on, the lighting switch 7, which is linked to the high beam daylight switch 6, is turned on.
turns on. Also, daylight switch 6 for high beam
When turned on, the coil 12c of the fourth relay 12 is grounded, and the tail switch 1
Coils 9d, 1 of the first to third relays 9, 10, 11 depending on ON/OFF, engine drive/stop
Power supply to 0c and 11c is blocked. For this reason,
The first to third relays 9, 10, 11 maintain the state shown in FIG. Therefore, from the + terminal of the battery to the terminals 7a and 7b of the lighting switch 7, the common terminal 2c of the first bulb 2, the high beam filament 2b, and the terminal 6 of the high beam daylight switch 6.
A and 6b, current flows to turn on the high beam filament 2b, and at the same time, from the terminal 7b of the lighting switch 7 to the fixed contact 9b of the first relay 9, the movable contact 9a, the common terminal 3c of the second bulb 3, and the high beam Current flows to the filament 3b, contacts 10a and 10b of the second relay 10, and terminals 6a and 6b of the high beam daylight switch 6, and the high beam filament 3b also lights up.
That is, when the high beam daylight switch 6 is turned on, the high beam circuit is formed regardless of whether the tail switch 1 is turned on or off or whether the engine is running or stopping, and the battery, high beam filament 2b,
The high beam filaments 2b and 3b connected in parallel with 3b are lit with normal brightness.

Furthermore, when the low beam daytime switch 5 and the high beam daytime switch 6 are turned on at the same time, the above-mentioned low beam circuit and high beam circuit are formed at the same time, and the low beam filament 2a,
3a and the high beam filaments 2b and 3b are lit at the same time.

Effects of the invention As mentioned above, when the engine is running, the low beam and high beam daylight switches are activated.
When the tail switch is in the OFF state and the tail switch is turned on, by lighting a pair of low beam filaments connected in series to the battery, the low beam filaments will reduce the brightness to 15% of the normal brightness in conjunction with the tail switch's ON operation. This eliminates the need to insert a resistor in the circuit or provide a filament exclusively for dame dips in order to comply with dame dip regulations, as was the case in the past. You can measure cost reduction.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram showing the circuit configuration of a lighting device control circuit according to the present invention. 1...Tail switch, 2a, 3a...Filament for low beam, 2b, 3b...Filament for high beam, 5...Daytime switch for low beam, 6...Taima switch for high beam, 8...
…Dame Dates Prix Relay.

Claims (1)

[Scope of utility model registration request] A pair of low-beam filaments and a pair of high-beam filaments that are incorporated into an automobile headlamp, a low-beam daylight switch for lighting the pair of low-beam filaments connected in parallel to a battery, and a pair of high-beam filaments connected in parallel to a battery. A high beam daylight switch for lighting the filament, a tail switch for lighting the small lamp, and a daylight switch for low beam and high beam when the engine is running.
A lighting device control circuit comprising a dame-date relay for lighting the pair of low beam filaments connected in series to a battery when the tail switch is turned OFF and the tail switch is turned ON.