JPH04294050A - Fluorescent lamp device and fluorescent lamp - Google Patents

Abstract

PURPOSE:To judge properly if a fluorescent lamp is to be replaced by furnishing an illuminance deterioration detection part of automatic sensing and display type consisting of a photo-electric sensor and an illuminance warning part connected with this sensor through a control part. CONSTITUTION:An illuminance deterioration detection part 1 of automatic sensing and display type is furnished, which consits of a photo-electric sensor 2 and an illuminance warning part 3 connected with this sensor 2 through a control part 4. Also an illuminance degradation sensing part 1 is furnished, which generates darkness change in the automatic sensing and display consisting of a photo-sensitive color-changing substance presenting change of color or its change in the darkness according to the received light illuminance. This enables accurate, proper, and instantaneous sensing of illuminance deterioration of fluorescent lamp without using a conventional illuminance meter, and thereby a proper judgement about replacement of fluorescent lamp can be done.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluorescent light device and a fluorescent light used for ordinary lighting.

0002

2. Description of the Related Art Fluorescent lights, which are widely used for general lighting purposes, have the property that their illuminance gradually decreases and deteriorates in proportion to the cumulative lighting time. However, the fluorescent lamp itself does not have a function to detect a decrease in illuminance, and furthermore, since an illuminance meter is generally not at hand, a decrease in illuminance is confirmed by the user's visual sensory judgment.

0003

[Problem to be Solved by the Invention] When the above-mentioned conventional fluorescent lights are used for office lighting or study lighting for students, there is a specific relationship between the fluorescent lights and the users. As a result, the user's visual sense becomes chronically adapted to the gradually decreasing illuminance of the fluorescent light, and his/her sensory judgment becomes erroneous.In many cases, the user does not notice until the illuminance has decreased by a considerable amount, causing eye fatigue and visual acuity. There is a problem that causes a decline in performance or interferes with office efficiency and study efficiency.

The present invention provides a fluorescent light device and fluorescent light that overcomes the drawbacks of the prior art.

[0005]

[Means for Solving the Problems] The present invention solves the above-mentioned technical problems by providing an illuminance deterioration detecting section for an automatic display that includes a photoelectric sensor and an illuminance warning section connected to the photoelectric sensor through a control section. A first invention of a "fluorescent light device or fluorescent light" characterized by comprising:

[0006] ``A fluorescent lamp device or a fluorescent lamp characterized by being provided with an illuminance deterioration detecting section for automatic display, which is made of a photosensitive color-changing material that causes a change in color or a change in color density depending on the received illuminance.'' This invention consists of a second invention.

[0007] The fluorescent light device in the present invention refers to the entire lighting device equipped with a tubular fluorescent light that is industrially mass-produced and traded as an independent product.

[0008]

[Operation] The fluorescent light device or fluorescent light of the present invention having the above structure has an illuminance warning section having a photoelectric sensor, or an illuminance deterioration detecting section made of a photosensitive color-changing substance that causes color and density changes depending on the received illuminance. Therefore, the illuminance deterioration of the fluorescent light is accurately and automatically displayed by the operation of the illuminance warning section of the illuminance deterioration detection section or by the change in color.

[0009]

[Example] A detailed explanation will be given below based on an example. First, referring to FIG. 1 showing a conceptual diagram of an embodiment of the first invention, an illuminance deterioration detecting section 1 of a fluorescent light device of this embodiment includes a photoelectric sensor 2 comprising a solar cell and an illuminance warning light of a warning light. Part 3
The photoelectric sensor 2 and the control unit 4 are connected by circuits 5 and 6, and the control unit 4 and the warning unit 3 are connected by circuits 5 and 6. There is.

A received light current corresponding to the intensity of light received from the fluorescent light is inputted from the photoelectric sensor 2 to the control unit 4, and the control unit 4 sets the input current to a current value or less, for example, the current value. The illuminance of the fluorescent light is 50-70
%, a warning current is passed through the circuit 6 and the lamp of the illuminance warning unit 3 is turned on.

[0011] The photoelectric sensor 2 is attached to an arbitrary position of the fluorescent light of the fluorescent light device or its attachment device at a place where it is easily exposed to the illumination of the fluorescent light, and the warning section 3 is provided to the user. It is placed in a position where it can be easily seen from the outside. In addition,
The photoelectric sensor 2 may use a known phototransistor, CDS, etc. instead of the solar cell described above.

Next, although not shown, an embodiment of the second invention will be described. In this embodiment, silver chloride, which is known as a photosensitive color-changing substance, is used, and the illuminance deterioration detecting part coated with this substance is placed at any position on the fluorescent lamp of the fluorescent lamp device or its attachment device to detect the fluorescent light. It is attached in a space that is easily illuminated by the light and is easily visible to the user.

The above-mentioned embodiment has the warning section 3 that lights up when the illuminance of the fluorescent light deteriorates, or the illuminance deterioration detecting section that changes color. Compared to adaptive visual and sensory judgments, deterioration judgments can be made instantly with much higher accuracy.

[0014]

[Effects of the Invention] As explained above, the fluorescent light device and fluorescent light of the present invention can accurately and immediately detect the illumination deterioration of the fluorescent light with high precision without using an illuminance meter. This has the effect of making accurate decisions about replacing fluorescent lights and preventing problems such as decreased visual acuity, eye fatigue, and decreased office and study efficiency due to deterioration of illuminance.

[Brief explanation of drawings]

[Fig. 1] Conceptual diagram of the illuminance deterioration detection section of the first embodiment of the invention

[Explanation of symbols]

1 Illuminance deterioration detection section 2 Photoelectric sensor 3 Illuminance warning section 4 Control section 5 Circuit 6 Circuit

Claims (3)

[Claims] 1. A fluorescent light device comprising: a photoelectric sensor; and an illuminance deterioration detection section for automatic display, which comprises an illuminance warning section connected to the photoelectric sensor through a control section. [Claim 2] Color changes depending on received light intensity, or
1. A fluorescent light device characterized by being provided with an illuminance deterioration detection section for automatic display, which is made of a photosensitive color-changing substance that causes a change in color density. 3. A fluorescent light comprising the illuminance deterioration detection section according to claim 1 or claim 2.