JP2007087732A - Light source device - Google Patents

Light source device Download PDF

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Publication number
JP2007087732A
JP2007087732A JP2005274227A JP2005274227A JP2007087732A JP 2007087732 A JP2007087732 A JP 2007087732A JP 2005274227 A JP2005274227 A JP 2005274227A JP 2005274227 A JP2005274227 A JP 2005274227A JP 2007087732 A JP2007087732 A JP 2007087732A
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Japan
Prior art keywords
discharge lamp
light source
source device
electrode
temperature
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Pending
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JP2005274227A
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Japanese (ja)
Inventor
Takayuki Kagami
Kazuya Terasaki
孝幸 各務
和弥 寺崎
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Sony Corp
ソニー株式会社
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Application filed by Sony Corp, ソニー株式会社 filed Critical Sony Corp
Priority to JP2005274227A priority Critical patent/JP2007087732A/en
Publication of JP2007087732A publication Critical patent/JP2007087732A/en
Application status is Pending legal-status Critical

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Abstract

<P>PROBLEM TO BE SOLVED: To provide a light source device capable of extending a service life of a discharge lamp by reducing difference in temperature of the discharge lamp. <P>SOLUTION: This light source device provided with the discharge lamp 10 comprising electrodes 3a and 3b and a transparent cylindrical sealing body 4 (4a, 4b and 4c) covering its circumference and equipped with a rotational drive means 1 for rotating the discharge lamp 10 is composed. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a light source device using a discharge lamp, for example, a high voltage discharge lamp.

A liquid crystal projector (projection type liquid crystal display device) is known as one of large-screen display devices.
As a light source for the liquid crystal projector, since it is required to have high illuminance, a high voltage discharge lamp or the like is used.

By the way, a high pressure discharge lamp becomes quite high temperature at the time of lighting.
In particular, in the light emitting sphere, a discharge phenomenon occurs inside, so the temperature rises to near 1000 ° C. Along with this, temperature distribution (temperature unevenness) is generated inside and on the surface of the sphere.

As an example of this temperature distribution (temperature unevenness), a temperature difference occurs between the upper part and the lower part of the light emitting sphere.
For example, when the high pressure discharge lamp is disposed horizontally, the direction of gravity (vertical direction) is substantially perpendicular to the central axis of the discharge lamp. At this time, temperature unevenness occurs in the light emitting sphere, such as 900 ° C. at the lower part of the light emitting sphere and 1030 ° C. at the upper part.

  The cause of this temperature unevenness is that (A) hot air rises upward by convection, and (B) the envelope of the high-pressure discharge lamp is usually formed of quartz glass with poor thermal conductivity. There are two main points.

In general, when quartz glass is exposed to a high temperature for a long time, it gradually becomes devitrified due to impurities and other factors.
Further, when quartz glass is lit at a low temperature for a long time, blackening gradually occurs.
For this reason, when the light is lit for a long time at a high temperature or a low temperature, the translucency of the quartz glass is lost, and the illuminance of the discharge lamp decreases. This phenomenon shortens the life of the discharge lamp.
Therefore, as a product design of the high pressure discharge lamp, it is required to reduce the temperature difference between the upper and lower sides.

Conventionally, for example, a method for eliminating a temperature difference in a discharge lamp by attaching a fan to a reflecting mirror surrounding a lamp (enclosure) and performing forced air cooling has been proposed (for example, see Patent Document 1).
JP 2000-82321 A

However, in the cooling method using a fan, the air flow changes depending on the characteristic variation of the fan itself and the manufacturing variation of the blow-in duct shape.
If the flow of air changes in this way, a temperature difference also occurs.

  In order to solve the above-described problems, the present invention provides a light source device capable of reducing the temperature difference of the discharge lamp and extending the life of the discharge lamp.

  The light source device of the present invention comprises a discharge lamp having an electrode and a transparent cylindrical envelope covering the periphery of the electrode, and is provided with a rotation driving means for rotating the discharge lamp. is there.

According to the configuration of the light source device of the present invention described above, since the rotation driving means for rotating the discharge lamp is provided, the discharge lamp can be rotated by the rotation driving means to reduce the temperature difference of the discharge lamp. It becomes possible.
During lighting, the gas around the discharge lamp has a lower temperature due to the influence of buoyancy and the upper temperature becomes higher. Change with. Thus, for example, when the rotation is made half a turn, the sealed portion that has been in contact with the lower gas at a low temperature comes into contact with the gas at a high temperature. By continuing the rotation, the temperature of the envelope becomes uniform.
Thereby, the temperature difference of the discharge lamp which has arisen by the temperature distribution of gas can be reduced.

According to the above-described present invention, the temperature difference of the discharge lamp can be reduced, so that the temperature of the discharge lamp can be made substantially uniform.
As a result, the life of the discharge lamp can be prolonged by preventing the life of the discharge lamp from decreasing due to, for example, devitrification or blackening of the envelope made of glass.
Therefore, according to the present invention, a long-life light source device can be realized.

A schematic configuration diagram of an embodiment of a light source device of the present invention is shown in FIG.
This light source device is constituted by using a discharge lamp 10 in which a transparent envelope 4 made of a transparent material such as glass covers an electrode.
The sealing body 4 is configured such that sealing portions 4b and 4c are provided on the left and right, respectively, with respect to the central light emitting sphere portion 4a.
The electrode includes an electrode part 3a on the right side in the figure and an electrode part 3b on the left side in the figure, and an electrode part 3c for supplying a voltage from the outside is connected to the left electrode part 3b.
The electrode part 3a, the electrode part 3b, and the sealing body 4 (4a, 4b, 4c) are arrange | positioned so that each center axis may become a substantially horizontal direction.

Here, FIG. 2 shows a cross-sectional view of the discharge lamp 10 of FIG.
As shown in FIG. 2, the right electrode portion 3a extends into the light emitting sphere portion 4a through the right sealing portion 4b, and the left electrode portion 3b passes through the left sealing portion 4c. The light emitting sphere portion 4a extends to the inside of the light emitting sphere portion 4a, and the tip portions of these electrode portions 3a and 3b are arranged to face each other in the light emitting sphere portion 4a.
And the front-end | tip part of right and left electrode part 3a, 3b is formed so that the front-end | tip may become thin, and these front-end | tip parts act as an electrode, and discharge is performed.

A substance or gas that contributes to light emission, for example, mercury, is enclosed in the light emitting sphere 4a in accordance with the type of the discharge lamp 10.
Although not shown, the left and right sealing portions 4 b and 4 c are configured to seal so that a substance sealed in the light emitting sphere 4 a does not leak from the discharge lamp 10. For example, a configuration in which sealing is performed at the boundary between the light emitting sphere portion 4a and the sealing portions 4b and 4c, and a configuration in which sealing is performed in the middle of the sealing portions 4b and 4c or at the outer end are employed.

  In FIG. 2, the tip portions of the left and right electrode portions 3a and 3b are formed so as to be thin so that the discharge lamp 10 can be driven by alternating current, but the discharge lamp 10 is driven by direct current. Alternatively, the tip of the electrode part on the side receiving the discharge may be a flat surface.

In the light source device according to the present embodiment, in particular, the discharge lamp 10 can be driven to rotate about the electrode portion 3a and the electrode portion 3b.
Specifically, as shown in FIG. 1, a drive device 1 is provided on the right side, and the drive device 1 is connected to the right electrode portion 3a.
For example, a motor that generates rotational torque is used as the driving device 1.

The driving device 1 is fixed to the fixed wall 5.
A connector 6 is provided on the right side of the upper portion of the fixed wall 5, and a voltage can be supplied from the outside of the light source device through the connector 6.

  Since the right electrode part 3a is driven to rotate about the electrode part 3a itself as a center axis by the drive device 1 as indicated by an arrow, the envelope 4 (4a, 4b, 4c) is centered on the electrode part 3a in conjunction with this The shaft is rotated as indicated by an arrow, and the left electrode portion 3b is also rotated around the electrode portion 3b itself as a central axis.

The electrode part 3a, the electrode part 3b, and the sealing body 4 can each be comprised using the material conventionally used for the discharge lamp.
As the sealing body 4, for example, glass such as quartz glass can be used.
In addition, the electrode part 3a and the electrode part 3b are good also as another material suitable for the electrode for discharge only at a front-end | tip part.

In addition, the energization device 2 is attached to the left side of the fixed wall 5 so that a voltage can be continuously supplied between the electrodes 3a and 3b even when the discharge lamp 10 rotates.
The energization device 2 is configured to have a rotating portion that is connected to the driving device 1 and rotates, and a fixed portion that does not rotate. Among these, the energization device 2 is attached to the fixed wall 5 by the fixing portion. For example, a slip ring can be used as the energization device 2 having such a configuration.

  Then, by adopting a structure (rotating part) in which the energization device 2 connected to the electrode part 3c can also rotate, the electrode part 3c can also be rotationally driven in synchronization with the electrode part 3b.

The case where the energization device 2 is configured in this manner is shown in FIGS. 3A and 3B. FIG. 3A schematically shows a schematic configuration of the energization device 2, and FIG. 3B shows an internal cross section of the energization device 2.
As shown in FIGS. 3A and 3B, the central portion of the energizing device 2 connected to the driving device 1 is a rotating portion 2 a.
The electrode unit 3 a and the electrode unit 3 c are both connected to the rotating unit 2 a of the energization device 2. Specifically, the inside of the rotating part 2a is hollow, and the electrode part 3a and the electrode part 3c are connected to two terminals on the inner wall, respectively.
With this configuration, the rotation unit 2a of the energization device 2, the electrode unit 3a, and the electrode unit 3c are rotated together by the rotational drive of the drive device 1.
On the other hand, the fixing portion 2b outside the energization device 2 is attached to the fixing wall 5 and is electrically connected to the connector 6 by wiring.
Further, by connecting a connecting material (configured by a brush or the like) 2c provided on the fixed portion 2b to the outer wall of the rotating portion 2a, electrical connection between the rotating portion 2a and the fixed portion 2b is performed. Yes. Thereby, as shown by a broken line in FIG. 3B, a conduction path is formed between the terminal on the inner wall of the rotating portion 2a and the terminal on the outer wall of the fixed portion 2b. Thereby, a voltage can be applied between the electrode portions 3a and 3b even while the discharge lamp 10 is rotated.

Note that FIG. 3B schematically shows the electrical connection, and therefore it is not always necessary to bend the electrode material of the electrode portions 3a and 3c and connect it to the terminal of the rotating portion 2a.
Actually, although not shown, for example, the electrode portions 3a and 3c are connected to the inner wall of the rotating portion 2a on the drive device 1 side (right side), and the electrode portions 3a and 3c are connected between the electrode portions 3a and 3c and the terminals. They are connected by wiring different from 3c. Such a configuration has an advantage that the load of the discharge lamp 10 (3, 4) is not applied to the terminals.

More preferably, as shown in FIG. 4, the discharge lamp is formed by covering the right electrode portion 3 a and connecting to the sealing body 4, attaching a support 7, and connecting the support 7 to the driving device 1. The strength of 10 and the accuracy of the rotating shaft are supplemented.
The support 7 becomes a rotating shaft in conjunction with the driving device 1, and the support 7 rotates and the discharge lamp 10 rotates with the shaft rotation of the driving device 1.
By providing the support 7 in this way, the electrode part 3a connected to the driving device 1 is broken, the electrode part 3a is bent, the accuracy of the discharge lamp 10 is lowered, or the sealing body 4 and the electrode part 3a are fixed to each other. Occurrence of problems such as peeling off can be prevented.
The support 7 is made of a heat-resistant conductor that is difficult to oxidize, such as SUS, and is configured such that the electrode portion 3a and the support 7 are also electrically connected.

In the present embodiment, since the discharge lamp 10 and the drive device 1 are configured to work together, heat is transferred from the discharge lamp 10 to the drive device 1 through the electrode portion 3a, the support 7, and the like. It is desirable to use a heat-resistant motor using grease.
In particular, when a high rotational speed is required, or when it is desired to reduce the amount of heat transfer, a heat-resistant gear is used to connect the rotating portion 2a and the support 7 of the energization device to the motor shaft.
Similarly, since the current-carrying device 2 is also affected by the heat from the discharge lamp 10, it is desirable that the rotating portion (shaft portion) 2a is made of high-temperature grease and is made of heat-resistant components.

When assembling the light source device of the present embodiment, the axial accuracy of the driving device 1 is ensured so as to achieve at least one of the following conditions (1), (2), and (3). Then, the driving device 1, the discharge lamp 10, and the fixed wall 5 are positioned.
(1) Even if the discharge lamp 10 is rotationally driven, the arc center position of the discharge does not change or has little influence. (2) Even if the discharge lamp 10 is rotationally driven, the light distribution from the discharge lamp 10 does not change. (3) When a reflecting mirror or a diffusing plate is attached to the discharge lamp 10 (see FIG. 6 or the like described later), the discharge lamp 10 is rotated with the diffusing plate or the reflecting mirror attached. However, the brightness or illuminance at a certain point does not change or has little effect

The light source device of the present embodiment can be operated as follows.
When a voltage is applied between the left and right electrode portions 3a and 3b of the discharge lamp 10, an arc is formed in the light emitting sphere portion 4a of the envelope 4 and light is emitted.
At this time, when the electrode unit 3 a (or the support 7 in FIG. 4) is driven to rotate by the driving device 1, both the sealing body 4 connected to the electrode unit 3 a and the electrode unit 3 b connected to the sealing body 4 , And the discharge lamp 10 as a whole rotates.

When the discharge lamp 10 emits light, heat is also generated, so that the temperature of the light emitting sphere 4a and its peripheral parts rises.
The internal pressure of the light emitting sphere part 4a during lighting reaches several tens of atmospheres to several hundreds of atmospheres, and reaches 900 ° C. or more at the surface temperature of the light emitting sphere part 4a under normal natural convection.
At this time, by rotating the discharge lamp 10 as a whole, the location of the light emitting sphere 4a that comes into contact with the upper gas having a higher temperature changes. When the rotation is half a circle, the portion of the light emitting sphere 4a that has been in contact with the lower gas having the lower temperature comes into contact with the upper gas having the higher temperature. Then, by continuing the rotation, the temperature in the light emitting sphere 4a gradually becomes uniform.
Thereby, the temperature difference of the discharge lamp 10 which has arisen by the temperature distribution of gas can be reduced.

Here, when the light source device of the present embodiment was actually manufactured and the relationship between the rotation speed and the temperature was examined, the following results were obtained.
When the discharge lamp 10 in which the light emitting sphere portion 4a was 900 ° C. to 1030 ° C. was not rotated, the light emitting sphere portion 4a was 930 ° C. to 960 ° C. when rotated at 5000 rpm. Similarly, when rotated at 10,000 rpm, the temperature was 890 ° C. to 920 ° C., and when rotated at 20000 rpm, the temperature was 870 ° C. to 900 ° C.
That is, it was found that as the rotation speed increased, the temperature difference decreased and the overall temperature decreased.

In addition, the above result is an example to the last, and the relationship between a rotation speed and temperature changes with structures (dimensions) of the light emission sphere part 4a.
When the temperature of the light emitting sphere part 4a satisfies the condition (about 800 ° C. to 1000 ° C.) simply by soaking the light emitting sphere part 4a, low speed rotation is sufficient.
On the other hand, when the luminous sphere portion 4a is at a high temperature and the above temperature condition cannot be satisfied, it is necessary to improve the heat dissipation to the outside air using high-speed rotation.

According to the configuration of the light source device of the present embodiment described above, the driving device 1 that rotates the discharge lamp 10 by rotating the electrode portion 3a with respect to the discharge lamp 10 is provided.
Thereby, the discharge lamp 10 is rotated by the driving device 1, and the temperature difference between the upper and lower sides of the discharge lamp 10 can be reduced. And the temperature difference in the inside of the light emitting sphere 4a of the envelope 4 of the discharge lamp 10 that has conventionally occurred due to the temperature distribution of the gas can be reduced.

In the light source device of the present embodiment, the temperature difference of the discharge lamp 10 can be reduced in this way, so that the temperature of the discharge lamp 10 can be made substantially uniform.
Thereby, for example, the lifetime of the discharge lamp 10 can be prevented from being shortened by devitrification or blackening of the envelope 4 made of glass, and the life of the discharge lamp 10 can be extended.
Accordingly, a long-life light source device can be realized.

  In the light source device of the present embodiment, the rotation direction of the discharge lamp 10 is not particularly limited, and may always be a constant direction (only clockwise or only counterclockwise) for a certain time in a certain direction. Once driven, it is possible to reverse the direction of rotation periodically, such as driving in the opposite direction for a certain period of time.

Further, the light source device of the present invention is not limited to the configuration of the above-described embodiment, and various configurations are possible.
Hereinafter, various forms in which the light source device shown in FIGS.

FIG. 5 shows a configuration in which a heat sink (heat radiator) is provided for the configuration shown in FIG. 4 so that heat from the envelope 4 is not easily transmitted.
As shown in FIG. 5, a heat sink (heat radiator) 21 is provided on the support 7 shown in FIG.
Thereby, the heat from the envelope 4 of the discharge lamp 10 is not easily transmitted to the energization device 2 and the driving device 1.
Even when the support 7 is not provided, the same effect can be obtained by providing a heat sink (heat radiator) in the middle of the electrode portion 3a of FIGS.

FIG. 6 shows a configuration in which a concave reflecting mirror is provided around the discharge lamp 10 and glass is attached to the front opening of the concave reflecting mirror.
As shown in FIG. 6, a concave reflecting mirror 8 is provided around the discharge lamp 10. Thereby, the emitted light of the discharge lamp 10 is reflected by the concave reflecting mirror 8, and the light can be collected in the forward direction, so that the light can be used efficiently.
A front glass 9 is attached to the front opening of the concave reflecting mirror 8. Thereby, when the envelope 4 of the discharge lamp 10 is ruptured, it is possible to prevent a shock wave or a glass piece from flying to the front.
It is also possible to adopt a configuration in which only the concave reflecting mirror 8 is provided.

FIG. 7 shows a configuration in which the concave reflecting mirror 8 is connected to the electrode portion 3a with respect to the configuration shown in FIG.
As shown in FIG. 7, a connecting portion 11 is provided in the rear opening of the concave reflecting mirror 8, and the concave reflecting mirror 8 is connected to the electrode portion 3 a and the electrode portion 3 c by the connecting portion 11.
Thereby, the concave reflecting mirror 8 and the front glass 9 are also rotationally driven by the connecting portion 11 in conjunction with the electrode portion 3a and the electrode portion 3c.

  Conventionally, a configuration has been proposed in which air is introduced into the concave reflecting mirror and the front glass by a fan to cool the discharge lamp (see Japanese Patent Application Laid-Open No. 2000-82321). When ruptured, problems such as popping sound and mercury scattering occur.

In order to solve this problem, FIG. 8 shows a configuration in which the discharge lamp 10 is enclosed and sealed with respect to the configuration shown in FIG.
As shown in FIG. 8, the fixed wall 5 is formed in a box shape having an opening on the front surface, and a front glass 9 is attached to the front opening.
Thereby, since the discharge lamp 10 and the concave reflecting mirror 8 can be enclosed and sealed by the front glass 9 and the fixed wall 5, it is possible to suppress the burst sound, the scattering of mercury, and further the scattering of broken pieces of glass. Become. In addition, noise can be reduced compared to the case where a fan is provided.

Further, as a configuration in which the fixed wall 5 has a box shape having an opening on the front surface and the front glass 9 is attached to the front surface opening of the fixed wall 5, a configuration as shown in FIG. The difference between this configuration and the configuration shown in FIG. 8 is that the front glass 9 and the concave reflecting mirror 8 are separated from each other.
Even in this configuration, the interior is hermetically sealed by the front glass 9 and the box-shaped fixed wall 5, so that it is possible to suppress burst sound, mercury scattering, and glass fragment scattering. In addition, noise can be reduced compared to the case where a fan is provided.
In this configuration, since there is a gap between the concave reflecting mirror 8 and the front glass 9, the discharge lamp is compared with the configuration shown in FIG. Heat in the vicinity of 10 is easily radiated out of the concave reflecting mirror 8 through this gap.

The structure which provided the ventilation port in the rear surface of the box-shaped fixed wall 5 is shown in FIG.10 and FIG.11, respectively.
The structure shown in FIG. 10 is provided with a ventilation hole (ventilation hole) 12 on the rear surface of the box-shaped fixed wall 5 with respect to the structure shown in FIG. Similarly, the configuration shown in FIG. 11 is provided with an air vent (ventilation hole) 12 on the rear surface of the box-shaped fixed wall 5 with respect to the configuration shown in FIG.
For example, when the sealed wall is formed by the fixed wall 5, the temperature of the concave reflecting mirror 8, the light emitting sphere 4 a, and the sealing portions 4 b and 4 c becomes high and causes a thermal problem. It is good to provide the ventilation opening 12 in the.
10 and 11, there is only one ventilation opening 12, but it is also possible to provide ventilation openings at a plurality of locations.

Next, the schematic block diagram of other embodiment of the light source device of this invention is shown in FIG.
In the present embodiment, the energization device 2 shown in FIG. 1 is not provided. Instead, the flexible wiring 13 having high flexibility is used to electrically connect the electrode portion 3a and the electrode portion 3c to the connector 6. Yes.
Even with this configuration, it is possible to supply a voltage to the discharge lamp 10 rotated by the driving device 1.
The configuration of the present embodiment is suitable for a driving method in which the rotation direction of the discharge lamp 10 is periodically reversed (clockwise and counterclockwise).

  Next, the form which added the cooling means which cools a light source device with respect to the structure which enclosed the discharge lamp 10 grade | etc. With the fixed wall 5 and the front glass 9 shown in FIG. 8 is shown below.

In contrast to the configuration shown in FIG. 8, FIG. 13 shows a configuration in which a radiation fin is attached to the fixed wall 5 as a cooling means.
As shown in FIG. 13, the radiation fin 14 is attached to the upper right portion of the fixed wall 5 in the figure.
Thereby, heat can be released from the radiation fins 14 to promote cooling from the fixed wall 5.

Subsequently, FIG. 14 shows a configuration in which the fan 15 is further attached to the radiating fin 14 with respect to the configuration shown in FIG.
As shown in FIG. 14, fans 15 are attached to the radiation fins 14 in the configuration shown in FIG. 13. Thereby, the cooling from the fixed wall 5 can be further promoted.

FIG. 15 shows a configuration in which a heat radiating material is attached to the inside of the sealed space by the fixed wall 5 as a cooling means for the configuration shown in FIG.
As shown in FIG. 15, a heat dissipation material 16 is attached between the concave reflecting mirror 8 and the inner wall of the fixed wall 5.
A metal plate or a heat pipe can be used as the heat dissipating material 16.
By attaching the heat dissipating material 16 in this manner, cooling from the concave reflecting mirror 8 and air cooling in the fixed wall 5 can be promoted.

FIG. 16 shows a configuration in which a jacket to which a hose is connected is attached as a cooling means to the configuration shown in FIG.
As shown in FIG. 16, the liquid jacket 17 (17 </ b> A, 17 </ b> B) to which the hose is connected is attached to each of the fixed wall 5 and the concave reflecting mirror 8.
As a result, cooling liquid such as cooling water can flow through the liquid jacket 17 through the hose, and cooling of the fixed wall 5 and the concave reflecting mirror 8 can be promoted.
Note that only one of the liquid jacket 17A attached to the fixed wall 5 and 17B attached to the concave reflecting mirror 8 may be provided.

In contrast to the configuration shown in FIG. 10, FIG. 17 shows a mode in which ventilation holes and fans are provided on the fixed wall as cooling means.
As shown in FIG. 17, in contrast to the configuration in which the vent 12 is provided in the fixed wall 5 shown in FIG. 10, a vent 18 is provided in another portion of the fixed wall 5, and a fan 19 is provided in the vent 18. Is attached.
Thereby, since the intake or exhaust can be forcibly performed by the fan 19, ventilation inside the fixed wall 5 can be promoted to cool the inside.

  In addition, you may comprise a light source device combining the structure of each form mentioned above in multiple numbers.

In each of the above embodiments, the present invention is applied to a so-called double-end type discharge lamp in which a sealing body is formed by providing two sealing portions with respect to the light emitting sphere portion, and an electrode portion is disposed in each sealing portion. Although applied, the present invention can also be applied to other configurations.
For example, the present invention also relates to a so-called single-end type discharge lamp in which a sealing body is provided by providing one sealing portion with respect to the light emitting sphere, and two electrode portions are arranged in parallel on the sealing portion. Can be applied.

In the single-end type discharge lamp, two electrode portions are arranged not symmetrically on the central axis of the envelope but substantially symmetrically on the central axis of the envelope.
For this reason, the rotational drive by the drive device may be performed, for example, so that the envelope rotates with the central axis of the envelope as the rotation axis. At this time, if the electrode part is also rotationally driven in synchronization with the envelope, the two electrode parts move circularly.

Moreover, in each above-mentioned form, the discharge lamp is rotationally driven by using the central axis of the envelope as the rotation axis.
As described above, the rotational drive unit is configured to be rotationally driven with the central axis of the envelope as the rotational axis, so that the rotational drive unit can be easily configured using a motor, a slip ring or the like, and the discharge lamp is rotationally driven. There is no need for new space. Not only when the rotation axis completely coincides with the central axis of the envelope, but also when it substantially coincides with the central axis of the envelope, that is, when it is in the vicinity of the central axis of the envelope or substantially parallel to the central axis, Similar advantages are obtained.
In the present invention, the position of the rotating shaft and the direction of the rotating shaft may be other configurations. Even in such a configuration, the temperature distribution of the discharge lamp can be reduced.

  The present invention is not limited to the above-described embodiment, and various other configurations can be taken without departing from the gist of the present invention.

It is a schematic block diagram of one Embodiment of the light source device of this invention. It is sectional drawing of the discharge lamp of FIG. A, B It is a figure which shows the structure of the electricity supply apparatus of FIG. It is a figure which shows the case where a support is attached to the electrode part of FIG. It is a figure which shows the form which provided the heat sink in the support of FIG. It is a figure which shows the form which provided the concave reflecting mirror in the discharge lamp of FIG. 1, and attached glass to the front opening of the concave reflecting mirror. It is a figure which shows the form which connected the concave reflecting mirror of FIG. 8, and the electrode part. It is a figure which shows the form which sealed the discharge lamp of FIG. 1 with the box-shaped fixed wall and the front glass. It is a figure which shows the other form which sealed the discharge lamp of FIG. 1 with the box-shaped fixed wall and the front glass. It is a figure which shows the form which provided the ventilation port in the fixed wall of the structure of FIG. It is a figure which shows the form which provided the ventilation port in the fixed wall of the structure of FIG. It is a schematic block diagram of other embodiment of the light source device of this invention. It is a figure which shows the form which attached the fin to the fixed wall of the structure of FIG. It is a figure which shows the form which attached the fan to the fin of the structure of FIG. It is a figure which shows the form which provided the heat radiating material between the fixed wall of the structure of FIG. 8, and a concave reflective mirror. It is a figure which shows the form which attached the liquid jacket to the fixed wall and concave-surface reflective mirror of the structure of FIG. It is a figure which shows the form which provided another ventilation hole in the structure of FIG. 10, and attached the fan to this ventilation hole.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Drive device, 2 Current supply device, 2a Rotating part, 2b Fixing part, 3a, 3b, 3c Electrode part, 4 Sealing body, 4a Light emitting sphere part, 4b, 4c Sealing part, 5 Fixing wall, 6 Connector, 7 Support, DESCRIPTION OF SYMBOLS 8 Concave mirror, 9 Front glass, 10 Discharge lamp, 11 Connection part, 12, 18 Ventilation hole, 13 Flexible wiring, 14 Radiation fin, 15, 19 Fan, 16 Radiation material, 17, 17A, 17B Liquid jacket, 21 Heat sink (Heatsink)

Claims (5)

  1. A discharge lamp comprising an electrode and a transparent cylindrical envelope covering the periphery of the electrode;
    A light source device characterized in that a rotation driving means for rotating the discharge lamp is provided.
  2.   The light source device according to claim 1, wherein a rotation axis around which the discharge lamp is rotated by rotation driving means substantially coincides with a central axis of the envelope.
  3.   2. The electrode and a power supply unit that supplies power to the light source device from the outside are electrically connected using a device capable of energizing the rotating body. The light source device according to 1.
  4.   The light source device according to claim 1, wherein the electrode and a power supply unit that supplies power to the light source device from the outside are electrically connected by a highly flexible wiring.
  5.   2. The light source device according to claim 1, comprising: a concave reflecting mirror that reflects light emitted from the discharge lamp; and a glass plate attached to a front opening of the concave reflecting mirror, wherein the discharge lamp rotates. .
JP2005274227A 2005-09-21 2005-09-21 Light source device Pending JP2007087732A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011527742A (en) * 2008-07-10 2011-11-04 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Remote cooling by combination of heat pipe and resonator for synthetic jet cooling
JP2013025083A (en) * 2011-07-21 2013-02-04 Hitachi Consumer Electronics Co Ltd Projector apparatus
CN103543591A (en) * 2013-10-28 2014-01-29 芜湖市安曼特微显示科技有限公司 Rotating type bulb base and projector with bulb base

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0348836A (en) * 1989-07-18 1991-03-01 Seiko Epson Corp Illuminator

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0348836A (en) * 1989-07-18 1991-03-01 Seiko Epson Corp Illuminator

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011527742A (en) * 2008-07-10 2011-11-04 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Remote cooling by combination of heat pipe and resonator for synthetic jet cooling
JP2013025083A (en) * 2011-07-21 2013-02-04 Hitachi Consumer Electronics Co Ltd Projector apparatus
CN103543591A (en) * 2013-10-28 2014-01-29 芜湖市安曼特微显示科技有限公司 Rotating type bulb base and projector with bulb base

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