JP2008107258A - Head position detector and alarm illuminator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To correctly illuminate the head of a sleeper with an alarm illumination, and promote giving comfortable awakening of the sleeper, even if the sleeper moves on the bed. <P>SOLUTION: Four sheet-like piezoelectric sensors 4 are provided on the upper face of the bed 2, and each sheet of piezoelectric sensor 4 transmits a voltage signal corresponding to the weight applied, to a controller 6. A head board 3 is provided with a light-emitting panel 5 comprising a light-emitting diode which is divided into four blocks in the width direction of the bed 2. Each block in the light-emitting diode is controlled so as to gradually increase illuminance. A microprocessor 12 inside the controller 6 determines the position of the head Pa of the sleeper P, based on the magnitude of the voltage signals from the sheet piezoelectric sensors 4, and transmits the determined positional information on the head Pa to a light controller 9. The light controller 9 switches the blocks in the light-emitting diode, in response to the positional information on the head received from the controller 6, and dimming controls the light from the light-emitting diode, corresponding to a position where the head Pa is located at the wake-up time. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a head position detection device for a person sleeping on a bed, and an alarm lighting device using the same.

  2. Description of the Related Art Conventionally, there is known an alarm lighting device that irradiates a sleeper with a wake-up illumination when a desired wake-up time set in order to bring a comfortable awakening to the sleeper is approached.

For example, three types of light sources, a low illuminance light source, a medium illuminance light source, and a high illuminance light source are arranged at the bedside of the sleeping person, and when the desired wake-up time is approached, the low illuminance, medium illuminance, and high illuminance are in this order. The light source is emitted, the illuminance gradually increases from low illuminance to medium illuminance, and the illuminance increases rapidly from medium illuminance to high illuminance to reproduce the natural sunshine from before dawn to after dawn, There is known an alarm device that provides a comfortable awakening for a sleeping person (for example, see Patent Document 1).
JP 7-318670 A

  However, as described in Patent Document 1, the position of the light source is fixed as in the case of a stand-type lighting fixture even in an alarm lighting device in which the illuminance of the light source is gradually controlled to bring a sleeper comfortably. In some cases, since the sleeper moves on the bed by a sleep operation such as turning over, there is a possibility that the head of the sleeper may not be illuminated with appropriate illumination depending on the position of the sleeper.

  When the sleeper's head is not illuminated with an appropriate illuminance, even if the illuminance on the light source side is precisely controlled, the sleeper is not awakened comfortably. In addition, in some cases, another sleeper who has set a different wake-up time on the adjacent bed may be disturbed by the influence of the lighting device that is gradually controlled.

  Therefore, the present invention detects the position of the head without disturbing the sleep of the sleeper, and even if the sleeper is moving on the bed, the wake-up lighting is correctly applied at the desired wake-up time. It is an object of the present invention to provide a head position detecting device and an alarm lighting device that can irradiate a child with a comfortable awakening.

  In order to achieve the above object, the invention of claim 1 is used for an alarm lighting device that irradiates a sleeper on a bed with an alarm light, and detects the position of the head on the bed of the sleeper. A head position detecting device for detecting a physical quantity such as weight and temperature of a sleeping person's head, and a head position judging means for judging the position of the sleeping person's head based on the physical quantity detected by the sensor; , Provided.

  Invention of Claim 2 changes the irradiation direction of the illumination for alarming according to the position of the head position detection apparatus of Claim 1, and the sleeper's head detected by the said head position detection apparatus And an alarm lighting device characterized by comprising a changing means.

  A third aspect of the present invention is the alarm lighting device according to the second aspect, wherein a plurality of light sources are built in the headboard of the bed, and the illumination direction changing means switches between lighting and non-lighting of the plurality of light sources. The irradiation direction is changed by the above.

  According to the first aspect of the present invention, the position of the head on the bed of the sleeping person can be detected without disturbing the sleeping of the sleeping person.

  According to the invention of claim 2, since the irradiation direction of the alarm light is changed according to the position of the sleeping person's head, the sleeping person's head is correctly illuminated even if the sleeping person moves on the bed. Irradiates the sleeper comfortably.

  According to the invention of claim 3, in addition to the effect of claim 2, since the light source is not located in the space above the sleeper lying on the bed, it becomes difficult for the sleeper to worry about the existence of the light source and to fall asleep In other words, there is no inconvenience that a sleeper's sleep such as turning over would cause a part of the body, such as the sleeper's arm, to come into contact with the light source and prevent the sleeper from sleeping.

  Hereinafter, an alarm lighting device and a head position detection device according to an embodiment of the present invention will be described with reference to FIGS. 1 to 3. The alarm lighting device 1 of the present embodiment is integrally assembled with a bed 2 and a headboard 3 of the bed 2.

  Four sheet-like piezoelectric sensors 4a, 4b, 4c, and 4d as weight detection sensors for detecting the position of the head Pa on the bed 2 of the sleeping person P are provided on the upper surface of the bed 2 on the headboard 3 side. It is pasted. A light-emitting panel 5 extending substantially the same length as the width of the bed 2 is provided at a position slightly higher than the head Pa of the sleeping person P lying on the bed 2 on the headboard 3.

  The sheet-like piezoelectric sensors 4a to 4d are made of a thin and soft material so that the lying sleeper P does not feel a sense of incongruity such as unevenness or steps. For example, a thin film of aluminum nitride formed on a metal foil to form a sheet, or a specially processed polypropylene film made by EMFiT (Finland) to make it porous and apply high voltage to it Thus, a film-like piezoelectric sensor in which electrons are trapped can be used. Each of the sheet-like piezoelectric sensors 4a to 4d generates a voltage signal corresponding to the weight applied thereon, and transmits the voltage signal to the control device 6 described later.

  As shown in FIG. 2, the light-emitting panel 5 is disposed inside a horizontally long recess 7 formed in the headboard 3, and is a light-emitting diode 8 (light source) that is dimmed and controlled by a dimming control device 9 described later. Is provided. The light emitting diode 8 is divided into four blocks 8a to 8d, and dimming control is performed for each of the blocks 8a to 8d.

  The dimming control device 9 is constituted by a microprocessor 11 (irradiation direction changing means) embedded in the headboard, and the light-emitting diodes 8 a to 8 that perform dimming control based on head position information received from the control device 6. It has an irradiation direction changing function for switching the block of 8d, a dimming function for gradually increasing the illuminance of the light emitting diodes 8a to 8d based on a predetermined time schedule, and a clock function for measuring the rising time.

  The dimming function for gradually increasing the illuminance of the light emitting diodes 8a to 8d based on a predetermined time schedule, for example, emits the light emitting diodes 8a to 8d of any block at low illuminance 30 minutes before the set desired wake-up time The illuminance is gradually increased until it reaches 10 minutes before the desired wake-up time, and the illuminance is suddenly increased from 10 minutes before the desired wake-up time, with the maximum illuminance at the desired wake-up time. .

  On the side of the bed 2, a control device 6 including a microprocessor 12 (head position determining means) is disposed in a range that can be reached by a sleeping person P lying on the bed 2. The control device 6 further operates the input key group 13 such as keys and buttons operated when the sleeper P inputs a desired wake-up time, and the sleeper P operates the input key group 13 during the wake-up time setting mode. A liquid crystal panel 14 is provided for displaying the time to be input and displaying the current time when the wake-up time setting mode is canceled.

  The microprocessor 12 of the control device 6 receives the voltage signals from the four sheet-like piezoelectric sensors 4a to 4d and determines the position of the head Pa of the sleeping person P by comparing the magnitudes of the voltage signals. For example, when the voltage signal from the sheet-like piezoelectric sensor 4b is larger than the other sheet-like piezoelectric sensors 4a, 4c, and 4d, the head Pa of the sleeping person P is slightly left of the center on the bed 2 ( 1 and FIG. 3).

  The microprocessor 12 of the control device 6 is connected to the microprocessor 11 of the dimming control device 9. The microprocessor 11 of the dimming control device 9 has information on the set desired wake-up time and the head of the sleeping person. Send location information. The connection mode of the sheet-like piezoelectric sensors 4a to 4d, the light emitting diodes 8a to 8d, the dimming control device 9, and the control device 6 is shown in FIG.

  Next, the operation of the alarm lighting device 1 will be described along a process in which the sleeper P falls asleep after entering the bed 2 and is awakened by the alarm lighting device 1.

  The sleeper P inputs the desired wake-up time by operating the input key group 13 of the control device 6 at bedtime. Since the time input at this time is displayed as a digital value on the liquid crystal panel 14, the sleeper P operates while watching the time display on the liquid crystal panel 14, and presses the enter button to request the desired time to wake up (for example, 7 am Set the time.

  The sleeping person P who sets the desired wake-up time then lies on the bed 2 and falls asleep, but since there is no lighting device (light source) above the sleeping person P lying on the bed 2, the sleeping person P illuminates. Problems such as difficulty in falling asleep due to the presence of appliances, or a part of the body such as the arm of sleeper P coming into contact with the lighting device due to a sleep action such as turning over, etc. Does not occur.

  The set information on the desired wake-up time is transmitted from the microprocessor 12 of the control device 6 to the microprocessor 11 of the dimming control device 9, and the microprocessor 11 receives the received information on the desired wake-up time (7:30 am). Based on the above, when the approach to the desired wake-up time is recognized by comparing with the current time by the clock function possessed by the microprocessor 11 itself, and when it is close to the desired wake-up time (for example, 7:00 am) Dimming control is performed based on the time schedule of the street.

  On the other hand, when the set desired wake-up time approaches (for example, 7:00 am), the microprocessor 12 of the control device 6 goes to bed based on the voltage signals received from the sheet-like piezoelectric sensors 4a to 4d at that time. The position of the head Pa of the person P is determined and transmitted to the microprocessor 11 of the light control device 9 as head position information. The microprocessor 11 switches the blocks of the light emitting diodes 8a to 8d to be dimmed based on the received head position information.

  For example, when head position information indicating that the head Pa of the sleeping person P is slightly left of the center on the bed 2 is transmitted to the microprocessor 11, the microprocessor 11 reads the second block from the left. The above-described dimming control is performed on the light emitting diode 8b.

  Accordingly, light of appropriate illuminance is irradiated to the head Pa of the sleeping person P moving slightly to the left from the center, and the sleeping person P is comfortably awakened by the gradually increasing light. Similarly, when the sleeping person P has moved to another position, the head Pa of the sleeping person P moving in the same manner is irradiated with light.

  Because light is emitted following the head Pa of the sleeping person P in the moved position, the sleeping person P is always awakened comfortably by appropriate light, and sets different wake-up times on adjacent beds. Even when another sleeping person is present, the other sleeping person is not disturbed by the influence of the lighting device.

  In this embodiment, the microprocessor 11 of the dimming control device 9 has only a dimming function that gradually increases the illuminance of the light emitting diodes 8a to 8d based on a predetermined time schedule, and the approach to the desired wake-up time is The configuration may be such that it is detected by a clock function of the microprocessor 12 of the control device 6.

  Further, the sheet-like piezoelectric sensor (weight detection sensor) 4 has a small area per sheet and a large number of five or more sheets in bed so that the position of the head Pa of the sleeping person P can be detected more precisely. In this case, the light-emitting diodes 8 are also divided into fine blocks according to the number of the sheet-like piezoelectric sensors 4. Instead of the light-emitting diode 8, a light source such as a fluorescent lamp, an incandescent lamp, or an organic EL may be used.

  Hereinafter, another embodiment will be described with reference to FIGS. 4 to 6. In the alarm lighting device 1 of the second embodiment shown in FIG. 4, two downlights 16 a and 16 b spaced apart in the width direction of the bed 2 are provided on the ceiling 15 instead of the light emitting panel 5 provided on the headboard 3. The light control device 9 is embedded in the wall 17. In addition, a wireless transmitter (not shown) is added to the control device 6, and a wireless receiver (not shown) is added to the dimming control device 9, and the desired wake-up time and head position between the control devices 6 and 9. The information is transmitted by the radio 18. Other configurations are the same as those of the first embodiment.

  In the case of the alarm lighting device 1 of this embodiment, when the microprocessor 12 of the control device 6 receives a large voltage signal from the sheet-like piezoelectric sensor 4a or 4b, the head Pa of the sleeper P on the bed 2 is from the center. Since it is determined that the head is moving to the left side, position information that the head is on the left side is wirelessly transmitted to the dimming control device 9, and the dimming control device 9 illuminates the left downlight 16a when the desired wake-up time approaches. Are gradually increased based on a predetermined time schedule.

  Similarly, when the microprocessor 12 of the control device 6 receives a large voltage signal from the sheet-like piezoelectric sensor 4c or 4d, the microprocessor 12 determines that the head Pa of the sleeper P on the bed 2 has moved to the right from the center. Then, wirelessly transmits position information that the head is on the right side to the dimming control device 9, and the dimming control device 9 gradually controls the illuminance of the right downlight 16b based on a predetermined time schedule when the desired wake-up time approaches. To do.

  In the alarm lighting device 1 of the third embodiment shown in FIG. 5, small light emitting diodes 31 (light sources) are dispersed over almost the entire surface of the headboard 3 instead of the horizontally long light emitting panel 5 provided on the headboard 3. Are arranged. The light emitting diodes 31 are arranged in a matrix of 3 rows in the height direction of the headboard 3 and 10 rows in the width direction, and dimming control is performed by the dimming control device 9 for each of the divided blocks 31a, 31b, and 31c. . For example, the central four rows of light emitting diodes 31 and the three right and left rows of light emitting diodes 31 are each made into a block.

  Further, instead of the sheet-like piezoelectric sensor (weight detection sensor) 4, an infrared sensor (detecting the direction in which the head Pa exists by detecting the amount of heat dissipated from the head Pa of the sleeper P at the upper center of the headboard 3. A temperature detection sensor) 32 is provided.

  In the case of the alarm lighting device 1 of this embodiment, the microprocessor 12 of the control device 6 determines the position of the head Pa of the sleeping person P based on the direction detection signal received from the infrared sensor 32, and the position of the head Information is transmitted to the dimming control device 9. The microprocessor 11 of the dimming control device 9 switches and controls the blocks 31a to 31c of the light emitting diode 31 to be dimmed based on the received head position information.

  For example, when the direction detection signal from the infrared sensor 32 is a signal indicating that the head Pa of the sleeping person P exists in the direction facing the infrared sensor 32, the control device 6 controls the dimming control device 9. Position information that the head is in the center is transmitted to the light control device 9, and the light control device 9 performs light control of the light emitting diode 31 of the central block 31b.

  As the infrared sensor 32, in addition to the type that detects the direction of the heat source, a sensor that detects the distance from the sensor 32 along with the direction of the heat source can be used, and such an infrared sensor 32 is arranged in the width direction of the headboard 3. By providing a plurality along the line, the position of the head Pa of the sleeper P can be detected with high accuracy. Further, when the position of the head Pa of the sleeper P is detected with high accuracy, the block sections of the small light emitting diodes 31 provided in a large number of rows can be further divided, and the head of the sleeper P Illumination with appropriate illuminance can be more accurately applied to Pa.

  In the alarm lighting device 1 of the fourth embodiment shown in FIG. 6, two tubular lamps 42 a are provided on a stand 41 erected on the top of the headboard 3 instead of the light emitting panel 5 provided on the headboard 3. 42b is supported.

  Further, instead of the sheet-like piezoelectric sensor (weight detection sensor) 4, a breathing sound (sleeping etc.) generated from the head Pa of the sleeping person P is detected near both sides of the headboard 3, and the position where the head Pa exists is detected. Two sound sensors 43a and 43b to detect are provided.

  The sound sensors 43 a and 43 b are each connected to the microprocessor 12 of the control device 6 and transmit the detected volume signal to the microprocessor 12. The microprocessor 12 determines the position of the head Pa of the sleeping person P based on the magnitudes of the volume signals received from the two sound sensors 43a and 43b, and uses the microprocessor of the dimming control device 9 as head position information. 11 to send.

  For example, when the sleeping person P moves to a position closer to the sound sensor 43a as shown in FIG. 6, the volume signal from the left sound sensor 43a is more than the volume signal from the right sound sensor 43b. Therefore, the microprocessor 12 determines that the head Pa of the sleeping person P is slightly on the left side from the center.

  The dimming control device 9 that has received head position information that the head Pa of the sleeping person P is slightly on the left side of the center performs dimming control on the left tubular lamp 42a.

  The sound sensors 43a and 43b may be embedded in the bed 2 instead of the headboard 3, or may be embedded on both sides of a pillow (not shown).

  Further, the stand 41 on which the tubular lamps 43a and 43b are supported may be rotated by a rotation driving device (not shown) so that any one of the tubular lamps 43a and 43b can be rotated to the center on the bed 2. In this case, for example, the dimming control device 9 that has received the head position information that the head Pa of the sleeper P is in the center controls the rotary drive device so that one of the tubular lamps 43a and 43b is connected. The irradiation direction is changed by moving to the center on the bed 2.

  In still another embodiment, the sensor for detecting the position of the head Pa of the sleeper P is a camera that captures an image, and the microprocessor 12 of the control device 6 analyzes the image received from the camera and displays the image in the image. You may have the function to extract the bed part of a sleeping person and to judge the position of a head.

  Next, FIG. 7 and FIG. 8 show the results of confirming the awakening feeling of a sleeper who is awakened by the alarm lighting device 1 of the present invention and the conventional alarm lighting device and another sleeper adjacent to the sleeper by experiments. The description will be given with reference.

  In the experiment, an experimental apparatus using the alarm lighting device 1 of the present invention (see FIG. 7A) and an experimental apparatus using the fixed stand type lighting fixture L as an illumination for alarming (Comparative Example 1) (FIG. 7B). )) And an experimental apparatus (Comparative Example 2) (see FIG. 7 (c)) that uses the ceiling light S arranged on the ceiling as illumination for awakening.

  In any experimental apparatus, two beds are arranged adjacent to each other, and are located on the right side of the bedtime on the left side of the bed in FIGS. 7 (a) to 7 (c) (hereinafter referred to as bedtime PA). It is assumed that the bedtime sleeper (hereinafter referred to as a sleeper PB) wakes up at a later time Tb, and the wake-up lighting device operates according to the bedtime of the sleeper PA.

  When the experiment is performed under the above conditions, the sleeper PA's head Pa is in the center of the bed in each experimental device, and the sleeper PA's head Pa is in a position shifted from the center of the bed. For the two cases, the illuminance (measurement item 1) at the head Pa of the sleeper PA at the wake-up time Ta of the sleeper PA and the illuminance (measurement item) at the head Pb of the sleeper PB at the wake-up time Ta of the sleeper PA 2) was measured, and the awakening feeling (evaluation item 1) of the sleeping person PA at the rising time Ta and the awakening feeling (evaluation item 2) of the sleeping person PB at the rising time Tb were evaluated.

  Hereinafter, the measurement results and the evaluation results will be described with reference to FIG. The awakening feeling of the sleeping person PA and the awakening feeling of the sleeping person PB are subjective evaluations by the sleeping persons themselves.

  In the experimental apparatus (see FIG. 7A) using the alarm lighting device 1 of the present invention, when the head Pa of the sleeper PA is in the center of the bed 2, the sleeper PA at the rising time Ta of the sleeper PA The illuminance (measurement item 1) at the head is 400 lux, and the illuminance (measurement item 2) at the head of the sleeping person PB at the wake-up time Ta of the sleeping person PA is 10 lux. Was very good and the awakening of the sleeping PB was also good.

  Similarly, in the experimental apparatus (see FIG. 7A) using the alarm lighting device 1 of the present invention, when the head Pa of the sleeper PA is shifted from the center of the bed 2, the sleeper PA is woken up. The illuminance (measurement item 1) at the head of the sleeping person PA at time Ta is 300 lux, and the illuminance (measurement item 2) at the head of the sleeping person PB at the rising time Ta of the sleeping person PA is 10 lux. The awakening feeling of the sleeping person PA was very good, and the awakening feeling of the sleeping person PB was also good.

  From this result, when the alarm lighting device 1 of the present invention is used, the sleeper PA is irradiated with illumination with high illuminance (300 to 400 lux) with respect to the head Pa even if the position of the head Pa is shifted. The sleeper PB adjacent to the sleeper PB is not irradiated with illumination with high illuminance at a time earlier than the sleep time Tb of the sleeper PB itself, so that a good sleep is not disturbed. It can be seen that

  In the experiment using the experimental apparatus of Comparative Example 1 (see FIG. 7B), when the head Pa of the sleeping person PA is in the center of the bed 2, the measurement result of the measurement item 1 is 400 lux, and the measurement The measurement result of item 2 was 10 lux, the awakening feeling of the sleeping person PA was very good, and the awakening feeling of the sleeping person PB was also good.

  Similarly, in the experiment using the experimental apparatus of Comparative Example 1, when the head Pa of the sleeper PA is displaced from the center of the bed 2, the measurement result of the measurement item 1 is 70 lux, and the measurement of the measurement item 2 The result was 10 lux, the sleepiness of the sleeper PA was poor, and the sleepiness of the sleeper PB was relatively good.

  From this result, when using the fixed stand type lighting fixture L, when the head Pa of the sleeper PA is shifted, the sleeper PA is awakened well because the head Pa is irradiated with insufficient illuminance. It can be seen that the feeling cannot be obtained.

  In the experiment using the experimental apparatus of Comparative Example 2 (see FIG. 7C), when the head Pa of the sleeping person PA is in the center of the bed 2, the measurement result of the measurement item 1 is 300 lux, and the measurement The measurement result of item 2 was 300 lux, and the awakening feeling of the sleeping person PA was very good, but the awakening feeling of the sleeping person PB was bad.

  Similarly, in the experiment using the experimental apparatus of Comparative Example 2, when the head Pa of the sleeping person PA is displaced from the center of the bed 2, the measurement result of the measurement item 1 is 150 lux, and the measurement of the measurement item 2 The result was 300 lux, and the awakening feeling of the sleeping person PA was very good, but the awakening feeling of the sleeping person PB was bad.

  From this result, when the ceiling light S is used, even when the head Pa of the sleeper PA is shifted, the sleeper PA obtains a good sense of awakening because the minimum light intensity is irradiated to the head Pa. However, since the sleeper PB is irradiated with illumination with high illuminance (300 lux) at a time earlier than the sleep time Tb of the sleeper PB, the sleeper PB is disturbed from the sleep before the sleep time, and the sleep time of the sleeper PB itself It can be seen that good awakening cannot be obtained with Tb.

1 is an overall perspective view of an alarm lighting device according to a first embodiment of the present invention. The perspective view of the light emission panel attached to the head board in the alarm illuminating device. The block diagram which shows the electrical structure in the alarm illuminating device. The whole alarm illuminating device perspective view which concerns on the 2nd Embodiment. The perspective view of the principal part of the alarm lighting apparatus which concerns on the 3rd Embodiment. The perspective view of the principal part of the alarm lighting apparatus which concerns on the 4th Embodiment. (A) is explanatory drawing which shows the state which the sleeper's head in the experiment using the alarm illuminating device of this invention has in the center (upper stage), and the state shifted from the center (lower stage), (b) is fixed stand type illumination Explanatory drawing which shows the state which the sleeper's head in the experiment using an instrument is in the center (upper stage) and the state which shifted from the center (lower stage), (c) is the sleeper's head in the experiment using the ceiling light in the center Explanatory drawing which shows the state (lower stage) shifted from a certain state (upper stage) and the center. Two sleepers adjacent to each other in an experimental apparatus (Example) using the alarm lighting device of the present invention, an experimental apparatus (Comparative Example 1) using a fixed stand type lighting fixture, and an experimental apparatus (Comparative Example 2) using a ceiling light The figure which shows the result of having performed the wake-up experiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Alarm lighting apparatus 2 Bed 3 Headboard 4, 4a, 4b, 4c, 4d Sheet-like piezoelectric sensor (sensor which detects physical quantity)
8, 8a, 8b, 8c, 8d Light emitting diode (light source)
11 Microprocessor (Irradiation direction changing means)
12 Microprocessor (head position judging means)
16a, 16b Downlight (lighting for alarm)
31 Light-emitting diode (light source)
32 Infrared sensor (sensor that detects physical quantity)
42a, 42b Tubular lamp (lighting for alarm)
43a, 43b Sound sensors (sensors that detect physical quantities)
P Sleeper Pa Head

Claims (3)

A head position detection device for detecting the position of the head on a bed of a sleeping person, used for an alarm lighting apparatus for irradiating a sleeping person on the bed with an alarm lamp,
A sensor that detects physical quantities such as the weight and temperature of the sleeper's head;
A head position detecting device comprising: head position determining means for determining a position of a sleeping person's head based on a physical quantity detected by the sensor. A head position detecting device according to claim 1;
Irradiation direction changing means for changing the irradiation direction of the alarm light according to the position of the head of the sleeping person detected by the head position detection device;
An alarm lighting device comprising: A plurality of light sources are built in the bed headboard,
The wake-up illumination device according to claim 2, wherein the illumination direction changing means changes the irradiation direction by switching between lighting and non-lighting of the plurality of light sources.

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