JPH07106075A - Luminaire - Google Patents

Abstract

PURPOSE:To improve the noise performance, and to improve the reliability by stopping the starting pulse when non-lighting condition or non-installation condition of a lamp is detected, and furthermore, inputting the electrical signal for reset to generate the starting pulse. CONSTITUTION:A pulse stop means 1c includes a timer circuit, and the pulse stop means 1c is connected to lamp wires 4a, 4b, and when the stop means 1c detects the voltage under the non-connection condition or non-lighting condition of a lamp between the lamp wires 4a, 4b, the stop means 1c outputs the signal for stopping a high voltage pulse generating means 1b after a certain time is passed. When the electrical signal is inputted from a signal generating means 2a to a reset circuit 1d, in the case where a potential difference does not exist between pulse detecting lines 6a, 6b, the reset circuit 1d recognizes the installation of a lamp. Then, the reset circuit 1d outputs the reset signal to the pulse stop means 1c for reset, and the high voltage pulse is generated from the pulse generating device 1b to start and light the lamp 3. Since any mechanical contact is not provided, reliability is improved, and since a power source line is not led to a lamp holding part, necessity for connecting a thick wire to a lamp holder 2 is eliminated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting fixture having a lighting device for lighting a high pressure discharge lamp such as an HID lamp.

[0002]

2. Description of the Related Art A high-pressure discharge lamp lighting device is generally one in which a high-voltage pulse is continuously applied to the high-pressure discharge lamp until the high-pressure discharge lamp is lit, and the high-voltage pulse is stopped when the high-pressure discharge lamp is lit. A high-pressure discharge lamp such as this continues to be in a faulty state due to its life, or if the high-pressure discharge lamp is left with the power turned on, a high-voltage pulse is applied to the lamp socket or fixture. As it continues, problems such as insulation deterioration occur.

For this reason, conventionally, there has been provided a pulse stopping means for detecting the non-connection state or the astigmatism state of the high-pressure discharge lamp with a timer circuit and stopping the oscillation of the high-voltage pulse after a lapse of a predetermined time.
There were some that prevented insulation deterioration of lamp sockets and appliances. However, after the pulse stop function worked, even if the high-pressure discharge lamp was replaced with the power turned on, it did not light up, and it was necessary to reset the power supply once and release the pulse stop function.

Further, usually, a large number of high-pressure discharge lamp lighting devices are connected to one circuit of the power supply, and when the power supply is reset, other normal high-pressure discharge lamps are also extinguished at that moment. In other words, since the high pressure discharge lamp lighting device is connected to the high pressure discharge lamp only by two lamp lines, the information obtained from the two lines is the lamp voltage,
Only the current and the power, and the lamp voltage, the current and the power that can be detected when the high-pressure discharge lamp is in a life state imperfect state are the same as those when the high-pressure discharge lamp is removed and are indistinguishable.

On the other hand, there has heretofore been an interlock type lamp socket in which the power supply circuit is closed when the high pressure discharge lamp is mounted, and opened when the high pressure discharge lamp is removed.
The problem is solved by using this interlocking lamp socket. That is, FIG. 7 shows an example of a lighting circuit using a conventional lamp socket with an interlock function.
In the figure, 1 is a high pressure discharge lamp lighting device, 2 is a lamp socket, 3 is a high pressure discharge lamp, 4 is a lamp line, 5 is a power line, Vs is a commercial power source, SW is a power switch, and the lamp socket 2 is an interlock. Switch with function 2
a. If the high pressure discharge lamp 3 is not attached to the lamp socket 2, the switch 2a is opened, the power supply line 5 is opened, and no power is applied to the high pressure discharge lamp lighting device 1, so that the high pressure discharge lamp lighting device 1 is in a stopped state. become. On the other hand, when the high-pressure discharge lamp 3 is attached to the lamp socket 2, the switch 2a is closed and the high-pressure discharge lamp lighting device 1 receives power from the commercial power supply Vs, so that the high-pressure discharge lamp lighting device 1 operates.

According to this conventional example, since the power supply circuit is turned off when the high pressure discharge lamp 3 is removed, the power supply to the high pressure discharge lamp lighting device 1 can be stopped even when the lamp is replaced.

[0007]

However, in this conventional example, if the high-pressure discharge lamp lighting device generates high-frequency noise such as a high-frequency lighting system, the high-frequency noise of the lamp wire 4 passes through the contact of the switch 2a. There is an inconvenience that it is superimposed on the power supply line 5 and the noise performance is significantly deteriorated.

Further, when the interlock switch is used, there is a problem in reliability due to opening and closing of mechanical contacts, and a relatively large current flows through the power supply line 5, so it is necessary to use a thick wire. Furthermore, since the contact on the primary side (power supply side) and the terminal on the secondary side (lamp output side) are built in the same lamp socket, it is necessary to increase the insulation distance. There were drawbacks such as high cost and poor design.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a luminaire which can improve noise performance and reliability and can reduce the insulation distance.

[0010]

The luminaire of the present invention comprises:
A lamp socket having a signal generating means for outputting an electric signal in synchronism with the mounting of the lamp and a high-voltage pulse generating means for supplying a starting pulse to the lamp socket. It has pulse stopping means for stopping the starting pulse and further has a reset circuit for inputting the reset signal to reset the pulse stopping means to generate the starting pulse, and is connected to the lamp socket. And a lighting device.

[0011]

According to the luminaire of the present invention, when the high-voltage discharge lamp is mounted in the lamp socket and the power is turned on, the starting pulse is applied to the high-pressure discharge lamp by the high-voltage pulse generating means of the lighting device to start the lamp. If the high-pressure discharge lamp is in a faulty state due to its life, is removed from the lamp socket with the power on, or is powered on without the lamp installed, these conditions are detected by the pulse stopping means. The start pulse stops to prevent insulation deterioration. When the high-pressure discharge lamp is replaced or newly installed in this state, the electric signal is output from the signal generating means of the lamp socket and input to the reset circuit at this time, so the pulse stopping means is reset and the high-voltage pulse generating means starts the operation. A pulse is generated and the high pressure discharge lamp is lit.

In this case, since the lamp socket is provided with the signal generating means for outputting an electric signal when the high pressure discharge lamp is mounted, there is no mechanical contact by the switch, so that the reliability is improved and the power supply line is not pulled into the lamp socket. So without connecting a thick wire to the lamp socket,
It is possible to prevent noise of the high frequency lighting system from being superimposed on the power supply line, and it is not necessary to increase the insulation distance, so that the lamp socket can be downsized. Further, since the signal generating means is not supplied with electric power from the power source side of the lighting device, the configuration is relatively easy and can be shared.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to FIGS. That is, FIG. 1 is a block diagram of this luminaire, which includes a high pressure discharge lamp 3 and a lamp socket 2.
A ballast 1a, a high-voltage pulse generating means 1b, a pulse stopping means 1c, a signal generating means 2a, and a reset circuit 1d.

The high-pressure discharge lamp 3 is attached to the lamp socket 2 and is integrally formed with signal generating means 2a, which is a solar cell for outputting an electric signal to the lamp socket 2. As shown in FIG. 2, the lamp socket 2 is provided with a metal fitting 7 into which a male screw-formed base 6 of the high-pressure discharge lamp 3 is screwed, inside a cylindrical socket body 10, and a central contact piece 8 is arranged on the inner bottom portion. I have set up. Further, a hole 9 is formed inside the opening of the socket body 10, and the signal generating means 2a is embedded in the hole 9. The receiving metal 7 and the central contact piece 8 are connected to the lamp lines 4a and 4b, and the signal generating means 2a is connected.
Is connected to the lamp detection lines 6a and 6b.

Before the high-pressure discharge lamp 3 is attached to the lamp socket 2, external light enters the signal generating means 2a through the hole 9, so that the signal generating means 2a, which is a solar cell, generates an electromotive force and the lamp detection line 6a. , 6b generate a voltage. On the other hand, when the base 6 of the high-pressure discharge lamp 3 is screwed onto the base 7, the hole 9 is closed by the base 6 and external light is blocked from entering the signal generating means 2a through the hole 9. ,
The electromotive force disappears and the voltage disappears, and this electric signal is output to the reset circuit 1d.

The lighting device 1 comprises a ballast 1a, a high voltage pulse generating means 1b, a pulse stopping means 1c and a reset circuit 1d. That is, the commercial power supply Vs is connected via the power switch SW to the ballast 1a including at least the current limiting element for maintaining the lighting state of the high pressure discharge lamp 3, the output terminal thereof being connected to the high voltage pulse generating means 1b, and the lamp wire 4a. , 4b, and applies a starting pulse to the lamp socket 2 to which the high-pressure discharge lamp 3 is attached. Further, the pulse stopping means 1c
Is for detecting the non-connection state or the astigmatism state of the high-pressure discharge lamp 3 and stopping the high-voltage pulse generator 1b after a lapse of a certain time. The high-voltage pulse generator 1b has a built-in timer circuit and is connected to the lamp lines 4a, 4b. When the voltage in the non-lamp connection state or the imperfect state between the lines 4a and 4b is detected, a signal for stopping the high voltage pulse generator 1b is output to the high voltage pulse generator 1b after a certain time has elapsed in consideration of the time from start to lighting. I am going to do it.

The reset circuit 1d includes a pulse detection line 6a,
When the voltage between 6b is detected and an electric signal is input from the signal generating means 2a, that is, when there is no potential difference between the pulse detection lines 6a and 6b, the lamp mounting state is recognized and a reset signal for resetting the pulse stopping means 1b is detected. By outputting, the pulse stop means 1c is reset to stop the pulse stop signal to the high voltage pulse generator 1b, and the high voltage pulse generator 1b is output.
Generate higher voltage pulses.

According to this embodiment, when the high voltage discharge lamp 3 is mounted in the lamp socket 2 and the power is turned on, the high voltage pulse generating means 1b of the lighting device 1 applies a start pulse to the high voltage discharge lamp 3 to start the lamp. To do. When the high-pressure discharge lamp 3 is in a faulty state due to its life, is removed from the lamp socket 2 while the power source Vs is still on, or the power source Vs is turned on while the lamp is not mounted, these states are pulse stopped. The starting pulse is detected by the means 1c to stop the insulation deterioration. When the high-pressure discharge lamp 3 is replaced or newly installed in this state, an electric signal is output from the signal generating means 2a of the lamp socket 2 and input to the reset circuit 1d at this time, so that the pulse stopping means 1c is reset and the high voltage is reached. A starting pulse is generated by the pulse generating means 1b, and the high pressure discharge lamp 3 is turned on.

In this way, the mounting / non-mounting of the high-pressure discharge lamp 3 is detected, and the generation of the starting pulse is stopped when the high-pressure discharge lamp 3 is not mounted or there is a defect, and the starting pulse is quickly generated after the lamp is mounted. Then, the high pressure discharge lamp 3 can be turned on. Further, since the lamp socket 2 is provided with the signal generating means 2a for outputting an electric signal when the high-pressure discharge lamp 3 is mounted, there is no mechanical contact by a switch, so that reliability is improved and the power supply line is not drawn into the lamp holding portion. It is possible to prevent the high-frequency lighting type noise from being superimposed on the power supply line without connecting a thick wire to the lamp socket 2, and it is possible to downsize the lamp socket 2 without requiring a large insulation distance. Further, since the signal generating means 2a is not supplied with electric power from the power source Vs side of the lighting device 1, the configuration is relatively easy and can be shared.

The second embodiment of the present invention is shown in FIGS.
Shown in. That is, this luminaire is applied to a high-pressure discharge lamp 3 having a lamp pin and its lamp socket 2, a piezoelectric element is used for the signal generating means 2a, and a voltage generated by the signal generating means 2a is input to the reset circuit 1d. It is configured to perform a reset operation when it is turned on. Others are the same as those in the first embodiment.

That is, as shown in FIG. 5, the high-pressure discharge lamp 3 has locking claws 12 on the side of the base 6 and a lamp pin 13 at the tip. As shown in FIG. 3 and FIG. 4, the lamp socket 2 has a lamp pin insertion hole 15 into which a lamp pin 13 is inserted in an inner bottom portion of a cylindrical socket body 10.
The lamp pin insertion hole 15 has a lamp pin contactor (not shown) that elastically contacts the lamp pin 13 in the direction of pushing it up. Further, groove portions 16 into which the locking claws 12 of the mouthpiece 6 are movably inserted are formed on both sides of the socket body 10, and holding springs 17 for retaining and locking the locking claws 12 are arranged in the groove portions 16. The holding spring 17 is bent in a substantially U shape and has a bent portion 21 formed at one end. The other end is attached to the locking hole 18 of the socket body 10 by the elastic action of the attachment claw 19 and the holding spring 17. The bent portion 21 is arranged so as to face the center of the socket body 10. When the high-pressure discharge lamp 3 is inserted, the locking claw 12 presses the bent portion 21 of the holding spring 17 to get over the bent portion 21 and enter the inside. At this time, the bent portion 21 once returns by elasticity and then returns.
Then, the lamp pin 13 enters the lamp pin insertion hole 15 and comes into contact with the socket contact, and is pushed by the socket contact and slightly moves in the direction in which the high pressure discharge lamp 3 comes off, but it is locked to the bent portion 21 and the mounting is completed. It becomes a state.

Next, the signal generating means 2a having a piezoelectric element as an embodiment is arranged at the return position of the bent portion 21 of the holding spring 17 and is in contact with the bent portion 21. Then, in FIG.
From (b) to (b), when the base 6 enters the lamp socket 2 and the locking claw 12 presses the bending portion 21 to try to get over it, the bending portion 21 causes the signal generating means 2 to move as shown in FIG.
When the locking claw 12 is further moved inward from the position a, the bent portion 21 returns as shown in FIG. 7C, and at this time, the signal generating means 2a is hit, so that the signal generating means 2a is pulsed by a piezoelectric effect due to the piezoelectric effect. Occurs.

In this way, when the high-voltage discharge lamp 3 is mounted, the electric signal is generated and output from the signal generating means 2a, so that the electric signal is input to the reset circuit 1d and the reset circuit 1d operates to operate the pulse stop circuit 1c. Is reset, and a starting pulse is generated by the high-voltage pulse generating means 1b. Others are the same as those in the first embodiment.

[0024]

According to the luminaire of the present invention, since the lamp socket is provided with the signal generating means for outputting an electric signal when the high pressure discharge lamp is mounted, the mechanical contact by the switch is eliminated and the reliability is improved. Since the power line is not drawn into the lamp socket, there is no need to connect a thick line to the lamp socket, it is possible to prevent noise from the high frequency lighting method from being superimposed on the power line, and there is no need to increase the insulation distance. Can be downsized. Further, since the signal generating means is not supplied with power from the power source side of the lighting device, there is an effect that the configuration is relatively easy and can be shared.

[Brief description of drawings]

FIG. 1 is a block diagram of a first embodiment of the present invention.

FIG. 2 is a block diagram including a schematic cross section of the lamp socket.

FIG. 3 is a perspective view of a lamp socket according to a second embodiment.

FIG. 4 is a partial cross-sectional view thereof.

FIG. 5 is a side view of a high pressure discharge lamp.

FIG. 6 is an explanatory diagram illustrating a mounting operation of the high pressure discharge lamp.

FIG. 7 is a block diagram of a conventional example.

[Explanation of symbols]

 1 Lighting Device 1b High Voltage Pulse Generating Means 1c Pulse Stopping Means 1d Reset Circuit 2 Lamp Socket 2a Signal Generating Means 3 High Voltage Discharge Lamp

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Nobutsu Nishihama 1048 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Works, Ltd.

Claims (1)

[Claims] 1. A lamp socket having a signal generating means for outputting an electric signal in association with the mounting of the lamp, and a high-voltage pulse generating means for supplying a starting pulse to the lamp socket. And a reset circuit for inputting the electric signal to reset the pulse stopping means to generate the starting pulse. A lighting fixture comprising: a lighting device connected to a socket.