JP2585899Y2 - Filter for remote control lighting - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter for a remote control lighting apparatus which covers a receiving portion of a remote control signal of a lighting apparatus having a high frequency lighting fluorescent lamp.

[0002]

2. Description of the Related Art FIG. 6 shows the characteristics of a conventional filter for a remote control lighting device (hereinafter referred to as "conventional filter") used in a remote control signal receiving section of a lighting device having a high-frequency lighting fluorescent lamp which can be operated by remote control. . This conventional filter cuts a mercury spectrum having a wavelength of about 1013 nm emitted from a high-frequency fluorescent lamp at normal temperature (25 ° C.) and transmits a remote control signal having a wavelength of about 950 nm incident on the filter in a direction perpendicular to the filter. It is. This transmission state is shown in FIG. In FIG. 7, 2 is a conventional filter, A is a remote control signal, and B is a mercury spectrum.

[0003]

However, at the time of low temperature (5 ° C.), the above-mentioned conventional filter operates by remote control operation due to the noise of the argon spectrum around 910 nm and 960 nm emitted from the high frequency lighting fluorescent lamp immediately after lighting. Was sometimes disturbed.

[0004] An object of the present invention is to provide a filter for a remote control lighting fixture that can improve the operation of a high-frequency lighting fluorescent lamp by remote control operation even at the time of low temperature, even immediately after lighting.

[0005]

SUMMARY OF THE INVENTION A filter for a remote control lighting apparatus according to the present invention has wavelengths of about 910 nm and 960 nm.
m argon spectrum is cut, and the wavelength is about 950n
m is transmitted, and the transmittance is maximized at an incident angle of about 60 °.

[0006]

According to the structure of the present invention, at a low temperature, the wavelength emitted from the high-frequency lighting fluorescent lamp immediately after lighting is 9%.
The argon spectrum around 10 nm and 960 nm can be cut, and the operation of the high frequency lighting fluorescent lamp by the remote control operation can be improved even at a low temperature or immediately after lighting. In addition, since the transmittance of the remote control signal is maximized at an incident angle of about 60 °, a good remote control operation can be performed even when the transmitter is used in a wall-mounted state. When the transmitter is used by hand, the incident angle deviates from 60 °, but there is no practical problem since the distance from the transmitter to the remote control lighting equipment is shortened and the remote control signal is strengthened.

[0007]

An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing characteristics of a filter for a remote control lighting device (hereinafter, simply referred to as a "filter") according to an embodiment of the present invention. FIG. 1A shows the relationship between the wavelength and the transmittance at an incident angle of 60 °, and FIG. 1B shows the relationship between the incident angle and the transmittance of a 950 nm remote control signal.

[0008] As shown in FIG.
This is a band-pass filter that transmits a signal having a wavelength of about 950 nm at an incident angle of 60 °, and has a configuration with the highest transmittance at an incident angle of 60 ° as shown in FIG. FIG. 2 shows how the remote control signal enters the filter. In FIG. 2, 1 is a filter,
A is a remote control signal having a wavelength of 950 nm, and θ is an incident angle.

FIG. 3 shows a positional relationship between a transmitter for emitting a remote control signal and a remote control lighting device in a room. In FIG. 3, reference numeral 3 denotes a transmitter, 4 denotes a remote-control lighting fixture equipped with a high-frequency lighting fluorescent lamp, and has a remote-control signal receiving unit.
Is a ceiling, 6 is a wall, and 7 is a floor. The size of this room is 6 ~
8 tatami mats, the height from the floor 7 to the ceiling 5 is 2.4 m, and the state where the transmitter 3 is usually farthest from the remote control lighting fixture 4 when performing remote control operation is as shown in FIG. This is the time when the operation 3 is performed by hanging the wall 3 on the wall 6 using a wall holder or the like. In this state, the remote control signal A is incident on the remote control lighting device 4, and as shown in FIG. 2, the incident angle θ with respect to the filter 1 covering the receiving unit is about 60 °.

[0010] Therefore, the filter 1 shown in FIG.
At low temperature (5 ° C.), the wavelength emitted from the high frequency lighting fluorescent lamp immediately after lighting is 9
The noise of the argon spectrum around 10 nm and 960 nm is cut, and the operation of the high frequency lighting fluorescent lamp by remote control operation can be improved. Further, as shown in FIG. 1 (b), a wavelength of 950 nm incident from a direction of an incident angle of 60 °.
2 can be transmitted even if the transmitter 3 is normally used far from the remote control lighting apparatus 4 on a wall, as shown in FIG. . When the transmitter 3 is used by hand, the angle of incidence deviates from 60 °, and the transmittance of the remote control signal at the filter decreases. This decrease in transmittance is shown in FIG. As shown in the figure, there is no practical problem since the signal is gently reduced and the distance from the transmitter 3 to the remote control lighting device 4 is short, so that the remote control signal is strong.

When the transmission bandwidth is wide as a filter characteristic, as shown in FIG. 4, instead of setting the highest point of the transmittance to 950 nm (characteristic), the characteristic shifted in the direction of the arrow is changed. 910n
The noise of the argon spectrum around m and 960 nm can be cut. FIG. 5 shows the relationship between the transmittance and the wavelength depending on the change in the incident angle θ when the filter is an interference film filter (a light-transmitting plate provided with a wavelength selective transmission film). FIG. 5 shows that the transmittance changes because the film thickness substantially changes when the incident angle θ changes.

[0012]

Effect of the Invention The filter for a remote control lighting device of the present invention can cut the argon spectrum around 910 nm and 960 nm emitted from the high frequency lighting fluorescent lamp immediately after lighting at low temperature, Also, the operation of the high-frequency lighting fluorescent lamp by remote control operation can be improved. In addition, since the transmittance of the remote control signal is maximized at an incident angle of about 60 °, a good remote control operation can be performed even when the transmitter is used in a wall-mounted state. When the transmitter is used by hand, the incident angle deviates from 60 °, but there is no practical problem since the distance from the transmitter to the remote control lighting equipment is shortened and the remote control signal is strengthened.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating characteristics of a filter for a remote control lighting device according to an embodiment of the present invention.

FIG. 2 is a diagram showing how a remote control signal according to the embodiment is incident on a filter.

FIG. 3 is a diagram showing a positional relationship between a transmitter and a remote control lighting device in the room in the embodiment.

FIG. 4 is a diagram for explaining characteristics of a filter in the embodiment.

FIG. 5 is a diagram illustrating a relationship between a transmittance and a wavelength according to a change in an incident angle θ when an interference film filter is used.

FIG. 6 is a diagram showing characteristics of a conventional filter for remote control lighting equipment.

FIG. 7 is a diagram showing a transmission state of a conventional filter for remote control lighting equipment.

[Explanation of symbols]

 1 Remote control lighting fixture filter A Remote control signal

Continuation of the front page (56) References JP-A-4-166127 (JP, A) JP-A-3-231475 (JP, A) Japanese Utility Model Application No. 54-129337 (JP, U) Japanese Utility Model Application No. Sho 61-154555 (JP) (U, U) JK 3-26101 (JP, U) (58) Field surveyed (Int. Cl. ⁶ , DB name) G02B 5/20 H04Q 9/00 311 H05B 37/02 H05B 41/24

Claims (1)

(57) [Scope of request for utility model registration] 1. A filter for a remote-control lighting device for covering a receiving portion of a remote-control signal for remote-controlling a high-frequency lighting fluorescent lamp, wherein an argon spectrum having wavelengths of about 910 nm and 960 nm is cut and a wavelength of about 950 nm is controlled A filter for a remote control lighting device, characterized by transmitting a signal and having a maximum transmittance at an incident angle of about 60 °.