JPH02276412A - Power wiring in building - Google Patents

Abstract

PURPOSE:To facilitate the use of an equipment necessary for a DC power supply by providing a plug socket that can change the size of a distribution board of DC voltage to which commercial source voltage is reduced and rectified and can change the level of voltage besides a distribution board for commercial power supply. CONSTITUTION:From a switchboard 2 the current is distributed through an incoming panel 1 to normal power supplying distribution boards 3, 3... The power supply from the switchboard 2 is reduced in voltage by a transformer 4, rectified by a rectifier 5 and DC voltage e.g. 15V is generated to supply DC to a DC power supplying distribution board 3a. A DC plug socket 6 is connected to the DC power supplying distribution board 3a. A plug socket 7 used for a parallel plug, a plug socket 8 used for an attachment plug and a lug 9 are fitted to the plug socket 6 for DC, and the polarity and voltage of DC are selected and controlled. It is thereby no more necessary to use an adapter for each DC equipment, which makes the room neat. It is therefore suitable for an office building.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to power supply wiring inside a building.

(Prior Art) In conventional buildings equipped with power receiving and substations, alternating current power at commercial frequency was supplied to required locations by each distribution board through a power receiving board and a power distribution board equipped with a transformer.

In addition, for small-scale detached houses, etc., 1
A commercial power source of 00 to 200 volts was supplied by wiring to each required location using a distribution board.

(Problem to be solved by the invention) In recent years, word processors, personal computers, video cameras, cordless telephones, etc. have become widespread in homes and offices, and these are all DC power supplies with rated voltages ranging from 9 volts to 15 volts. Bolts are common.

To do this, I had to plug a special adapter into an outlet to obtain power. However, the number of electrical outlets pre-installed in buildings is limited, and the electrical outlets are not spaced appropriately in consideration of the size of the adapters, so there is a limit to the number of adapters that can be inserted. For this reason, auxiliary outlets using extension cords are often used, which, combined with the number of adapters, tends to clutter the wiring.

The present invention has been made in view of the above circumstances, and its purpose is to provide a power supply wiring that does not require the use of an adapter.

(Means for Solving the Problems) In order to achieve the above object, the power supply wiring for a building according to the present invention includes a DC power supply with variable voltage and polarity arranged inside the building in addition to an AC power supply using a commercial frequency. be.

(Function) In addition to the commercial frequency AC power supply, there is also a DC power supply with variable voltage and polarity, so there is no need to use a special adapter like in the past.

(Example) FIG. 1 shows a schematic configuration of the present invention and will be explained.

This is a relatively large building, equipped with a power receiving board 1 and a power distribution board 2, and the AC power source is obtained from the power distribution board 2 and is branched and supplied to the power distribution board 3. In addition, distribution board 3 for DC power supply
a, and the DC power distribution board 3a receives power from the power distribution board 2 through a transformer 4 and a rectifier 5 to supply DC power at an appropriate voltage, for example, about 18 volts.

Each room is provided with a DC outlet 6 that receives DC power from a DC distribution board 3a. A switching regulator is embedded in this DC outlet 6 in advance, and outlets for two parallel plugs 7 and a plug plug 8 are also arranged. Although the circuits of the switching regulators are not particularly shown, they may be of the chopper control type or of the inverter control type. In the case of the chopper control method, it is possible to slightly change the voltage by converting the pulse width of a sawtooth wave, etc., so a knob 9 is installed on the rotation axis of a variable resistor or other volume control to adjust the desired DC voltage. It is a good idea to be able to adjust it accordingly.

Also, since some DC devices have opposite polarity plugs, a variable switch for changing the polarity should be set in advance on the DC outlet 6 (not shown).
.

As the DC power source, in addition to converting a commercial power source to DC power, it is also possible to use direct current power from a fuel cell, a solar cell, etc. as it is. In this way, power can be supplied to DC equipment from a pre-installed DC outlet without using an adapter.

(Effects) As explained in detail above, according to the power supply wiring for a building according to the present invention, in addition to the AC power supply using the commercial frequency inside the building,
Since it is equipped with a DC power supply with variable voltage and polarity, there is no need to use multiple adapters depending on the rated DC power supply of the equipment being used, and there is no need to use outlets with extension cords or wiring for adapters, making it easy to use indoors. It has a refreshing effect. In addition, in apartment complexes, etc., the residences are equipped with a DC power source, which has the effect of increasing the additional IaIihji.

[Brief explanation of drawings]

FIG. 1 is a schematic system diagram showing an embodiment of the present invention. Figure 1 1...Power receiving board 2...Switching board 3...Switching board 4...Transformer 5...Rectifier 6... ...DC outlet 7...Parallel plug outlet 8.
...Outlet for plug plug 9...
knob

Claims (1)

[Claims] Power supply wiring for a building consists of a commercial frequency AC power supply and a DC power supply with variable voltage and polarity inside the building.